WO2020030000A1 - 容灾切换方法、相关设备及计算机存储介质 - Google Patents
容灾切换方法、相关设备及计算机存储介质 Download PDFInfo
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- WO2020030000A1 WO2020030000A1 PCT/CN2019/099599 CN2019099599W WO2020030000A1 WO 2020030000 A1 WO2020030000 A1 WO 2020030000A1 CN 2019099599 W CN2019099599 W CN 2019099599W WO 2020030000 A1 WO2020030000 A1 WO 2020030000A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1458—Management of the backup or restore process
- G06F11/1464—Management of the backup or restore process for networked environments
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0663—Performing the actions predefined by failover planning, e.g. switching to standby network elements
Definitions
- the present invention relates to the field of Internet technologies, and in particular, to a disaster tolerance switching method, related equipment, and a computer storage medium.
- the scale of data centers is getting larger and larger, and data centers with multiple sites have become the main implementation.
- the hardware facilities in the data center including server clusters, are distributed in different areas, that is, the data center can be divided into at least two sites, each site has hardware facilities deployed, and each site is distributed in the same area or different
- the data center can implement unified management or deployment of each site to provide external services.
- disaster recovery and high reliability can be deployed between multiple sites.
- data can be backed up between the two sites. When one site fails, the other site can provide corresponding business services so as not to affect tenant business.
- FIG. 1 shows a schematic diagram of site switching.
- each site is deployed with network devices such as gateways, virtual routers, virtual switches, and virtual machines.
- a global control device is deployed at the two sites, which performs unified management of the two sites in the data center.
- site 1 fails, the virtual router at site 1 switches to site 2 through a dynamic routing protocol.
- the embodiment of the invention discloses a disaster tolerance switching method, related equipment and a computer storage medium, which can solve the problems of relatively complicated dynamic routing protocol configuration and high calculation complexity in the prior art.
- an embodiment of the present invention provides a disaster tolerance switching method.
- the method includes:
- the control device acquires the status of the first gateway, and when the status of the first gateway indicates that the network of the site to which the first gateway belongs is faulty, the control device may delete Is associated with a second gateway; wherein the first gateway and the second gateway are located in different sites, respectively.
- the control device can directly determine whether the gateway of the first site to which the first gateway belongs fails according to the state of the first gateway, and switch the router association in the first site to the second site when the failure occurs. To ensure the normal communication connection and avoid interruption of tenant business. Compared with the prior art, it can solve the problems of complicated configuration and high computational complexity of the dynamic routing protocols in the prior art, thereby reducing the complexity of the disaster recovery switch and improving the convenience of the disaster recovery switch .
- obtaining the status of the first gateway by the control device specifically includes: obtaining the failure status of the first gateway by the control device, and when the status of the first gateway is the failure status , It can indicate that the network at the first site has failed.
- the control device does not receive the notification message sent by the first gateway within a preset time period, and may determine that the state of the first gateway is a fault state; and / or, when the control device receives the fault message sent by the first gateway, it may It is determined that the state of the first gateway is a fault state.
- the notification message is used to notify that the network of the first site has not failed.
- the fault message is used to notify that the network of the first site has failed.
- control device can accurately determine whether the network of the first site fails according to the state of the first gateway, which can improve the diversity and accuracy of network fault detection.
- the control device associates a router in a site to which the first gateway belongs with the second gateway, specifically
- the method includes: the control device generates a first forwarding table associated with the router and the second gateway, and sends the first forwarding table to the second gateway.
- the first forwarding table is used by the second gateway to forward the data packet in the first site to the router.
- the control device can generate a first forwarding table for the second gateway.
- the second gateway may send the data packet in the first site to the router according to the first forwarding table, so as to implement network communication with each other. The problems of tenant service interruption and impact in disaster recovery scenarios are avoided, thereby ensuring high reliability of business communications.
- the control device connects the router in the site to which the first gateway belongs with the second
- the gateway association specifically includes: the control device generates a second forwarding table associated with the router and the second gateway, and sends the second forwarding table to the router.
- the second forwarding table is used by the router to forward the data packet in the first site to the second gateway.
- control device can also generate a second forwarding table for the router.
- the router may send the data packet in the first site to the second gateway according to the second forwarding table, so as to implement network communication with each other. The problems of tenant service interruption and impact in disaster recovery scenarios are avoided, thereby ensuring high reliability of business communications.
- the first gateway may pass The detection message monitors whether the network of the site (first site) to which the first gateway belongs fails, and may further send a fault message and / or a notification message to the control device. It is convenient for the control device to determine the state of the first gateway according to the fault message and / or the notification message, and then to implement subsequent disaster recovery switching. Compared with the prior art, a dynamic routing protocol is used to switch the gateway, which improves the network fault detection. Convenience and diversity.
- an embodiment of the present invention provides a control apparatus including an acquisition module and an association module, where:
- An acquisition module configured to acquire the status of the first gateway
- An association module configured to associate a router in a site to which the first gateway belongs to a second gateway when the state of the first gateway indicates that a network of the site to which the first gateway belongs is in a different site, and the first gateway and the second gateway belong to different sites .
- the acquisition module is specifically configured to acquire a fault status of the first gateway, where the fault status is used to indicate that the control device does not receive the first status within a preset time.
- a notification message sent by a gateway the notification message is used to notify that the network of the site to which the first gateway belongs does not fail, and / or the fault status is used to indicate that the control device receives the fault message sent by the first gateway, and the fault message is used to notify The network of the site to which the first gateway belongs fails.
- the associating the router in the site to which the first gateway belongs with the second gateway includes: generating a first forwarding table associated with the router and the second gateway, where the first forwarding table is used by the second gateway to forward data packets in the site to which the first gateway belongs to the router; The first forwarding table.
- the router in the site to which the first gateway belongs and the first The two gateway associations specifically include: generating a second forwarding table associated with the router and the second gateway, where the second forwarding table is used by the router to forward data packets in a site to which the first gateway belongs to the second gateway; the association module is further configured to: The router sends the second forwarding table.
- an embodiment of the present invention provides a computing device.
- Each computing device includes: a processor, a memory, a communication interface, and a bus; the processor, the communication interface, and the memory communicate with each other through the bus; and the communication interface is used for receiving and sending.
- Data a memory for storing instructions; a processor for calling program instructions in the memory to execute the first aspect or the method described in any possible implementation manner of the first aspect.
- a computer non-transitory storage medium stores a program code for disaster recovery switching.
- the program code includes instructions for performing the first aspect described above or the method described in any possible implementation of the first aspect.
- a chip product is provided to perform the first aspect or the method in any possible implementation manner of the first aspect.
- FIG. 1 is a schematic diagram of a site switching provided in the prior art.
- FIG. 2 is a schematic diagram of a network framework of a disaster tolerance switching system according to an embodiment of the present invention.
- FIG. 3 is a schematic diagram of a disaster tolerance switchover scenario provided by an embodiment of the present invention.
- FIG. 4 is a schematic diagram of a network framework of another disaster tolerance switching system according to an embodiment of the present invention.
- FIG. 5 is a schematic flowchart of a disaster tolerance switching method according to an embodiment of the present invention.
- FIG. 6 is a schematic structural diagram of a control device according to an embodiment of the present invention.
- FIG. 7 is a schematic structural diagram of a computing device according to an embodiment of the present invention.
- FIG. 1 is a schematic diagram of a network framework of a disaster tolerance switching system according to an embodiment of the present invention.
- the disaster recovery switching system 100 includes a control device 12 and at least two sites 14 managed by the control device 12 (the illustration uses two sites, a first site and a second site as examples). among them,
- the control device 12 is deployed across sites.
- the control device 12 may be a global control device of the at least two sites, or may be a cluster composed of control components correspondingly deployed at each site.
- control components When control components are deployed at each site, one site can function normally if the other site fails. In other words, after a control component deployed at one site fails, the control component deployed at another site can operate normally without affecting the normal operation of the control device.
- the at least two sites 14 are located in the same data center, and may specifically be data centers or cloud platforms provided by the same manufacturer.
- a gateway 140, a router 142, a switch 144, and a virtual machine (VM) 146 are deployed in each site.
- one gateway 140 may be associated with one or more routers 142.
- the router 142 sends the received message to the device outside the site through the associated gateway 140, and the network 140 sends the message received from the device outside the site to the associated router 142.
- the multiple routers 142 associated under the same gateway 140 may be routers deployed in the same site or distributed routers across sites, which is not limited in this application.
- a router can communicate with one or more switches, and accordingly a switch supports communication with one or more routers.
- One switch can deploy or manage one or more virtual machines.
- the data center in this embodiment also includes at least one physical machine that is not drawn in FIG. 2. Each physical machine is connected to switches and routers in the data center, and performs external communication with devices external to the site where the physical machine is located through a gateway associated with the router.
- one or more virtual machines can be created or deployed on the same physical device (such as a physical host or server), and these virtual machines are mounted on a switch or a router, as shown in the figure.
- the router in this application may be a virtual router or a physical router, and the switch may be a virtual switch or a physical switch, which is not limited in this application.
- a Layer 2 network proxy device 148 (I2-agent), a Layer 3 network proxy device 150 (I3-agent), and a gateway proxy device 152 can also be deployed in each site.
- the layer 2 network proxy device 148 is used to manage the switch 144, for example, to communicate with the virtual interactive machine through the layer 2 network proxy device, and configure a corresponding layer 2 forwarding table for the switch.
- the layer 3 network proxy device 150 is used to manage the router 142, for example, to communicate with the router through the layer 3 network proxy device, and configure a corresponding layer 3 forwarding table for the router.
- the gateway proxy device 152 is used to manage the gateway 140. For example, the gateway proxy device 152 communicates with the gateway, configures a corresponding forwarding table for the gateway, and the like. How to configure and update various forwarding tables will be described in detail below.
- the Layer 2 network proxy device, the Layer 3 network proxy device, and the gateway proxy device may specifically be software modules or hardware units deployed on the computing nodes, which are not limited in this application.
- a computing node can be deployed with a Layer 2 network proxy device, a Layer 3 network proxy device, or a gateway proxy device, etc., which will not be detailed or limited here.
- each site includes a computing node and a gateway node.
- the computing node can communicate with the gateway node through a tunnel.
- the tunnel here refers to the tunneling technology used by a virtual network, such as a virtual extensible local area network. VXLAN) tunnels, routing routing (generic routing encapsulation, GRE) tunnels, etc.
- a virtual machine is deployed on a computing node (which may be a physical device) to run tenant services.
- the gateway node (specifically, the gateway) carries north-south traffic, that is, the traffic that the virtual machine accesses the Internet or the Internet accesses the virtual machine.
- the network where the virtual machine is located is a private network, that is, the virtual machine is connected to the internal private network, and a switch and a router are deployed on the private network.
- the router can access the external network (referred to as the external network) through the gateway.
- each router may maintain or be configured with two gateways, a first gateway and a second gateway, which may also be referred to as a primary gateway and a standby gateway.
- the gateways 140 of the two sites in the illustration may be configured as the active and standby gateways of a certain router 142.
- the router accesses the external network through the first gateway (main gateway), that is, the first gateway carries the traffic of the router.
- the second gateway standby gateway
- the router may be switched to the second gateway to implement network communication through the second gateway, so as not to affect tenant services.
- the first gateway may specifically be a gateway of a site where the router is currently located.
- the second gateway is configured by the system according to actual needs, or is customized by a user according to actual needs or personal preferences.
- the first gateway and the second gateway are located in different sites.
- the two gateways configured on the same router are different.
- the two gateways configured by different routers can be the same or different.
- the routers at the two sites are configured with different primary and secondary gateways, the two sites provide corresponding business services at the same time.
- the primary gateway configured by a router in the first site is the standby gateway configured by another router in the second site.
- the routers associated with the same gateway may be routers at the same site or distributed routers across sites, which is not limited in this application.
- the virtual machine (or tenant) in this application does not sense the existence of the gateway, that is, does not sense the existence of the active and standby gateways.
- FIG. 3 two sites are used as examples, and a scenario diagram of a disaster recovery switchover is specifically shown.
- the detection module (monitor) of the gateway 1 in the site can detect that the network exit is unreachable and a fault occurs.
- a fault message may be sent to the control device, and the fault message is used to notify the network in the first site that a fault has occurred.
- the control device may switch all or part of the routers associated with the gateway 1 to the gateway 2 in the second site, so as to facilitate subsequent service communication through the gateway 2.
- updating the forwarding table of the gateway 2 and the forwarding tables of all or part of the routers are triggered at the same time, which will be specifically described in detail below.
- the first site fails, in order to ensure that tenant services are not affected, the virtual machines, switches, routers, and other network equipment involved in the control plane at the first site must be properly operated, and then switched through the gateway, using the newly switched gateway. Business communication accordingly. For example, when the first site is powered off, the network equipment in the first site cannot operate normally. In order to ensure the normal use of the tenant business, network equipment with the same business services needs to be deployed on other physical equipment.
- the network equipment here may specifically include, but is not limited to, virtual machines, switches, and routers. Alternatively, network devices in the first site need to be recreated or restored on other physical devices.
- the network equipment created at the second site is the same as that of the original first site.
- the gateway 1 in the first site can detect the failure of the first site through the detection module, and associate all routers under the gateway 1 (Including the newly created router here) Switch to gateway 2 to perform network communication through gateway 2.
- the network devices (specifically, virtual machines, switches, and routers) involved in this application are deployed in a distributed manner.
- the illustrated part shows that the switches are deployed in a distributed manner.
- the router associated with the gateway 2 can be switched to the gateway of another site, for example, the gateway 1 of the site 1 in the figure, so that The corresponding communication connection is subsequently restored via the gateway 1.
- Another situation is that after the network device at site 2 fails, because the network devices are deployed in a distributed manner, when the network device at site 2 fails, the network device associated with gateway 2 at site 1 runs normally, which can also guarantee Business uptime. That is to ensure that the network equipment on the control plane works normally.
- the router in the site 1 associated with the gateway 2 can also be switched to the gateway of another site to achieve a corresponding communication connection.
- the network device described in the embodiment of the present invention may be a virtual network device or a physical network device, which is not limited in the embodiment of the present invention.
- FIG. 5 is a schematic flowchart of a disaster tolerance switching method according to an embodiment of the present invention.
- the method is applied to a data center including a first site, a second site, and a control device, and the first site and the second site are controlled by the control device, that is, the control device can manage the A first site and the second site.
- the data center may be the data center shown in FIG. 2, FIG. 3, or FIG. 4, and correspondingly, the control device may be the control device 12 shown in FIG. 2 or the data center shown in FIG. 3. Control device or control device in the data center shown in FIG. 4.
- a first gateway is deployed at the first site, and a second gateway is deployed at the second site.
- the method shown in FIG. 5 may include the following implementation steps:
- Step S101 The first gateway sends a first message to the control device, and the first message is used to indicate a status of the first gateway. Accordingly, the control device receives the first message to learn the status of the first gateway.
- the first gateway may detect the status of its own network exit in real time or periodically by detecting packets, that is, the status of the first gateway to determine whether the network of the first site where the first gateway is located is faulty.
- the state of the first gateway includes a fault state and a normal state, and the fault state is used to indicate that a fault occurs in a network of a first site where the first gateway is located.
- the normal state is used to indicate that the network of the first site where the first gateway is located does not fail.
- Step S102 The control device acquires a state of the first gateway.
- Step S103 When the state of the first gateway indicates that the network of the first site to which the first gateway belongs is faulty, the control device associates a router in the first site with a second gateway, and the first gateway And the second gateway belong to a different site.
- control device may switch the router in the first site to the second gateway to perform network communication through the second gateway. Preventing problems such as service interruption at the first site after the first site fails, effectively ensuring high reliability of business communications.
- the first gateway may periodically or in real time monitor the status of the first gateway (specifically, the status of the network exit) to determine whether the network of the first site where the first gateway is located is faulty.
- the first gateway sends a probe message to a preset device. If no response message is received within a period of time, the status of the first gateway can be determined to be a fault state. The fault state is used to indicate that a fault occurs in the network of the first site. Otherwise, it may be determined that the state of the first gateway is a normal state, and the normal state is used to indicate that the network of the first site is not faulty.
- the first gateway may periodically send a probe message to a preset device, and determine the state of the first gateway by detecting the number of times a response message is received, etc., which are not described and limited herein.
- the first gateway may send a first message to the control device to notify or instruct the The state of the first gateway is described.
- the first message may be sent to the control device.
- the first message here may specifically be a notification message.
- the notification message is used to notify that the network of the first site is not faulty, or that the state of the first gateway is a faulty state. Understandably, due to a failure of the network or the first gateway, the control device may not receive the notification message for a preset period of time.
- the preset duration is set by the user or the system, for example, 1 minute.
- a first message may be sent to the control device, where the first message may specifically be Failure message.
- the fault message is used to notify that the network of the first site has failed.
- the first gateway may send a first message (specifically, a notification message) to the control device.
- a notification message here is used to notify the status of the first gateway, or to notify whether the network of the first site is faulty, etc., which is not limited in this application.
- the control device can learn the status of the first gateway according to the first message, and then learn whether the network of the first site is faulty. Specifically, when the state of the first gateway is a fault state, the control device may determine that a fault occurs in the network of the first site.
- the fault status may be specifically used to indicate any one or more of the following two situations: first, the control device receives a fault message sent by the first gateway, and the fault message is used to indicate the first site Network is down. Second, the control device does not receive a notification message sent by the first gateway within a preset period of time, and the notification message is used to indicate or notify that the network of the first site has failed.
- the control device may determine that the network of the first site is not faulty, and the process may be ended at this time.
- the normal state refers to a state other than a fault state.
- the normal state may be specifically used to indicate any one or more of the following two situations: first, the control device does not receive the fault message sent by the first gateway. Second, the control device receives the notification message sent by the first gateway within a preset time period. For the fault message and the notification message, reference may be made to the foregoing embodiments, and details are not described herein again.
- step S103 the network devices (specifically, virtual machines, switches, and routers) involved in the control plane of this application are distributed. Because the virtual machines, switches, and routers in the first site are deployed in a distributed manner, when one of the same network equipment (such as a router) fails or hangs up, the other network equipment (router) can also operate normally. Affects the normal operation of the control plane. Therefore, after the network at the first site fails, the router associated with the first gateway can be switched to the second gateway to perform corresponding network communication through the second gateway.
- the number of routers associated with the first gateway may be one or more, which is not limited. In the following application, a router is taken as an example to explain related content.
- the control device after the control device switches the router associated with the first gateway to the second gateway, it can generate a corresponding first forwarding table for the second gateway.
- the control device may generate a first forwarding table associated with the router and the second gateway.
- the first forwarding table is used to establish a communication connection between the router and the second gateway.
- the second gateway may forward the data packet in the first site to the router according to the first forwarding table; or forward the data packet from the router, and so on.
- the first forwarding table is used by the second gateway to forward the data packets in the first site to the router.
- the first forwarding table here may specifically be a forwarding table of a gateway (also may be referred to as a north-south forwarding table).
- the control device after the control device generates the first forwarding table, the control device sends the first forwarding table to the second gateway, so that the second gateway updates its own forwarding table according to the first forwarding table, and subsequently establishes and routers based on the updated forwarding table. Communication connection.
- the control device after the control device switches the router associated with the first gateway to the second gateway, it can generate a corresponding second forwarding table for the router.
- the control device may generate a second forwarding table associated with the router and the second gateway.
- the second forwarding table is used to establish a communication connection between the router and the second gateway.
- the router may forward the data packet in the first site to the second gateway according to the second forwarding table; or forward the data packet from the second gateway.
- the second forwarding table is used by the router to forward the data packet in the first site to the second gateway.
- the second forwarding table herein may be a Layer 3 forwarding table of the router, such as a flow table or a routing table, which is described in detail later in this application.
- control device After the control device generates the second forwarding table, it sends the second forwarding table to the router, so that the router can update its own forwarding table according to the first forwarding table, and subsequently establish communication with the router based on the updated forwarding table. connection.
- a configuration process of a network device is also involved, and the specific implementation steps are as follows.
- the network equipment here may specifically include, but is not limited to, a switch, a router, and a virtual machine.
- Step S201 The control device creates a virtual machine and configures a corresponding switch and router for the virtual machine according to the first creation request.
- the control device may receive a first creation request input by a user, and is configured to request to create a virtual machine in the first site and configure a corresponding switch and router for the virtual machine. Accordingly, after receiving the first creation request, the control device may create a corresponding virtual machine, and specify or configure a corresponding router and virtual machine for the virtual machine to create or form a communication link.
- Step S202 The control device sends a first configuration message to the switch for configuring a Layer 2 forwarding table of the switch.
- the control device may send a first configuration message to the switch (specifically, the Layer 2 network proxy device corresponding to the switch), which is used to configure the Layer 2 forwarding table of the switch. Accordingly, after receiving the first configuration message, the layer 2 network proxy device configures the layer 2 forwarding table of the switch according to the instruction of the first configuration message.
- the switch specifically, the Layer 2 network proxy device corresponding to the switch
- the layer 2 network proxy device configures the layer 2 forwarding table of the switch according to the instruction of the first configuration message.
- a Layer 2 forwarding table based on a virtual local area network is given in Table 1 below.
- the Layer 2 forwarding table of the switch may include a destination address, a destination port, an address type, and a virtual local area network VLAN.
- the destination address refers to the destination address or destination network to which the data packet is sent.
- the destination port is the destination port to which the data packet arrives.
- the address type refers to the classification to which the destination address (IP address) belongs.
- VLAN refers to the virtual local area network where communication is located.
- the destination port refers to the destination port to which the data packet is sent, which is not described in detail or limited here.
- Step S203 The control device creates a router according to a second creation request, and configures a first gateway (master gateway) for the router.
- the control device receives a second creation request input by the user.
- the second creation request is used to request creation of a corresponding router, and designate or assign a corresponding master gateway (first gateway) to the router. Accordingly, after receiving the second creation request, the control device creates a corresponding router according to the instruction of the second creation request, and allocates a corresponding first gateway to the router.
- Step S204 The control device sends a second configuration message to the router to configure a Layer 3 forwarding table of the router.
- the control device may send a second configuration message to the router (specifically, it may be a layer 3 network proxy device corresponding to the router), which is used to configure the layer 3 forwarding table of the router.
- the layer three network proxy device may configure the layer three forwarding table of the router according to the instruction of the second configuration message.
- the three-layer forwarding table is used to establish a communication connection between the router and the first gateway. In other words, the router can forward the data packets and so on it receives according to the Layer 3 forwarding table.
- the Layer 3 forwarding table of the router may be a routing table or a flow table (such as an openflow flow table) of the router, which is not limited in this application.
- the routing table of the router includes the destination address, netmask, routing overhead, output port, and next hop IP address.
- the output port refers to the interface to which the data packet is forwarded.
- the destination address is the destination address or destination network to which the data packet is sent.
- a netmask is an address that identifies the network segment where the destination host or router is located along with the destination address. This application is not detailed and limited here.
- the openflow flow table can include header fields, counters, and actions.
- the header field is the identifier of the flow table.
- the counter is used to calculate the statistics of the flow table.
- the action indicates the operation to be performed on the data packet that matches the flow table, which is not described in detail in this application.
- Step S205 The control device sends a third configuration message to the first gateway for configuring a forwarding table of the first gateway.
- the control device may send a third configuration message to the first gateway (specifically, the gateway proxy device corresponding to the first gateway).
- the gateway proxy device receives the third configuration message and configures a corresponding forwarding table (also referred to as a north-south forwarding table) for the first gateway according to the indication of the third configuration message.
- the north-south forwarding table is used to forward data packets from the router, or to send received data packets to the router.
- a probe message may be used to switch the router in the site to another gateway to ensure normal network communication without affecting tenant services. It can solve the problems of complex configuration and high computational complexity of dynamic routing protocols in the prior art, thereby reducing the complexity of disaster tolerance switching and improving the convenience of disaster tolerance switching.
- FIG. 6 is a schematic structural diagram of a control device according to an embodiment of the present invention.
- the control device 600 shown in FIG. 6 includes an acquisition module 602 and an association module 604. among them,
- the obtaining module 602 is configured to obtain a status of a first gateway
- the association module 604 is configured to associate a router in a site to which the first gateway belongs with a second gateway when the state of the first gateway indicates that the network of the site to which the first gateway belongs is faulty.
- the first gateway and the second gateway belong to different sites.
- the obtaining module 602 is specifically configured to obtain a fault status of the first gateway, where the fault status is used to indicate that the control device does not receive the first gateway within a preset time period.
- a notification message sent by the gateway the notification message is used to notify that the network of the site to which the first gateway belongs does not fail, and / or the control device receives a failure message sent by the first gateway, the failure The message is used to notify that the network of the site to which the first gateway belongs is faulty.
- the association module 604 is specifically configured to generate a first forwarding table associated with the router and the second gateway, and the first forwarding table is used for the second gateway to associate the router with the second forwarding table.
- a data packet in a site to which the first gateway belongs is forwarded to the router; and the first forwarding table is sent to the second gateway.
- the association module 604 is specifically configured to generate a second forwarding table associated with the router and the second gateway, and the second forwarding table is used by the router to associate the first forwarding table with the first forwarding table.
- the data packet in the site to which the gateway belongs is forwarded to the second gateway shown; and the second forwarding table is sent to the router.
- the control device provided in the embodiment of the present invention may specifically be the control device in the embodiment described in FIG. 2, which may be used to execute all or part of the implementation steps in the method embodiment described in FIG. 5.
- FIG. 2 The control device provided in the embodiment described in FIG. 2, which may be used to execute all or part of the implementation steps in the method embodiment described in FIG. 5.
- FIG. 7 is a schematic diagram of a computing device according to an embodiment of the present invention.
- the computing device 1000 provided in the present application includes one or more processors 701, a communication interface 702, and a memory 703.
- the processor 701, the communication interface 702, and the memory 703 may be connected through a bus or other methods.
- the embodiment takes the connection through the bus 704 as an example. among them:
- the processor 701 may be composed of one or more general-purpose processors, such as a central processing unit (Central Processing Unit).
- the processor 701 may be configured to run a program of any one or more of the following functional modules in the relevant program code: an acquisition module, an associated module, and the like. That is, the execution of the program code by the processor 701 may implement any one or more of the function modules such as the acquisition module and the associated module.
- the obtaining module and the related module refer to related descriptions in the foregoing embodiments.
- the communication interface 702 may be a wired interface (such as an Ethernet interface) or a wireless interface (such as a cellular network interface or using a wireless local area network interface) for communicating with other modules / devices.
- the communication interface 602 in the embodiment of the present application may be specifically used to receive a fault message or a notification message sent by the first gateway.
- the memory 703 may include volatile memory (Volatile Memory), such as Random Access Memory (RAM); the memory may also include non-volatile memory (Non-Volatile Memory), such as Read-Only Memory (ROM), flash memory (Flash), hard disk (HDD), or solid-state drive (SSD); memory 703 may also include a combination of the above types of memory.
- the memory 703 may be used to store a set of program code, and the program code may be a code providing a control device as shown in FIG. 6, so that the processor 701 calls the program code stored in the memory 703 to run the control shown in FIG. 6.
- the device; the program code may be code for running the method shown in FIG. 5, so that the processor 701 calls the program code stored in the memory 703 to run the method shown in FIG. 5 above.
- FIG. 7 is only one possible implementation manner of the embodiment of the present application.
- the computing device may further include more or fewer components, which is not limited herein.
- An embodiment of the present invention also provides a computer non-transitory storage medium, and the computer non-transitory storage medium stores program code.
- the program code includes instructions for executing the method described in FIG. 5. When the program code is run on a processor, the method flow shown in FIG. 5 is implemented.
- An embodiment of the present invention further provides a computer program product.
- the computer program product runs on a processor, the method flow shown in FIG. 5 is implemented.
- the steps of the method or algorithm described in connection with the disclosure of the embodiments of the present invention may be implemented in a hardware manner, or may be implemented in a manner that a processor executes software instructions.
- Software instructions can be composed of corresponding software modules.
- Software modules can be stored in Random Access Memory (RAM), flash memory, Read Only Memory (ROM), erasable programmable read-only memory (ROM Erasable (Programmable ROM, EPROM), electrically erasable programmable read-only memory (EPROM), registers, hard disks, removable hard disks, read-only optical disks (CD-ROMs), or any other form of storage medium known in the art.
- An exemplary storage medium is coupled to the processor such that the processor can read information from, and write information to, the storage medium.
- the storage medium may also be an integral part of the processor.
- the processor and the storage medium may reside in an ASIC.
- the ASIC may reside in a computing device.
- the processor and the storage medium may also exist as discrete components in a computing device.
- the program may be stored in a computer-readable storage medium.
- the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disc.
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Abstract
本发明实施例公开了容灾切换方法,包括:控制装置获取第一网关的状态;在所述第一网关的状态指示所述第一网关所属的站点的网络发生故障时,所述控制装置将所述第一网关所属的站点中的路由器与第二网关关联,所述第一网关与所述第二网关属于不同站点。采用本发明实施例,能够解决现有技术中存在的计算复杂度较高、动态路由协议配置比较复杂等问题,从而降低了容灾切换的复杂度。
Description
本发明涉及互联网技术领域,尤其涉及容灾切换方法、相关设备及计算机存储介质。
在互联网中,随着服务器规模的不断增加,数据中心的规模越来越大,部署多站点的数据中心成为主要实施方式。数据中心中的硬件设施,包括服务器集群等,分布在不同的区域,也就是说,数据中心可以划分为至少两个站点,每个站点均部署有硬件设施,各站点分布在相同的区域或者不同的区域,数据中心对能够实现对各站点的统一管理或部署,以对外提供服务。其中,为避免某个站点出现故障导致业务中断,可在多站点之间进行容灾、高可靠处部署。具体的,以两个站点为例,可在两个站点之间相互备份数据,当一个站点出现故障时,另一个站点可以提供相应的业务服务,从而不影响租户业务。
其中,现有技术提出以下方案来实现不同站点之间的切换。具体的,如图1示出一种站点切换的示意图。如图1中,每个站点均部署有网关、虚拟路由器、虚拟交换机以及虚拟机等网络设备。两个站点部署有一个全局控制装置,该全局控制装置对数据中心的两个站点进行统一管理。当站点1发生故障时,站点1的虚拟路由器通过动态路由协议切换到站点2。
然而在实践中发现,动态路由协议的开发和配置过程比较复杂,同时还涉及较高难度的计算,计算复杂度较高。
发明内容
本发明实施例公开了容灾切换方法、相关设备及计算机存储介质,能够解决现有技术中存在的动态路由协议配置比较复杂以及计算复杂度较高等问题。
第一方面,本发明实施例公开提供了一种容灾切换方法,所述方法包括:
控制装置获取第一网关的状态,在该第一网关的状态指示第一网关所属的站点的网络发生故障时,控制装置可将所述第一网关所属的站点(具体可为第一站点)中的路由器与第二网关关联;其中,第一网关与第二网关分别位于不同的站点中。
通过实施本发明实施例,控制装置能够直接根据第一网关的状态来确定第一网关所属的第一站点的网关是否发生故障,在发生故障时将第一站点内的路由器关联切换到第二站点中的第二网关内,以保证正常的通信连接,避免租户业务中断。相比于现有技术而言,其能够解决现有技术中存在的动态路由协议配置比较复杂以及计算复杂度较高等问题,从而降低了容灾切换的复杂度,提升了容灾切换的便捷性。
结合第一方面,在第一方面的第一种可能的实施方式中,控制装置获取第一网关的状态具体包括:控制装置获取第一网关的故障状态,当第一网关的状态为故障状态时,则可指示第一站点的网络发生了故障。具体的,控制装置在预设时长内未接收到 第一网关发送的通知消息,可确定第一网关的状态为故障状态;和/或,控制装置接收到第一网关发送的故障消息时,可确定第一网关的状态为故障状态。其中,通知消息用于通知第一站点的网络未发生故障。故障消息用于通知第一站点的网络发生了故障。
通过实施上述步骤,控制装置能够依据第一网关的状态来准确确定出第一站点的网络是否发生故障,这样可提升网络故障检测的多样性和准确性。
结合第一方面以及第一方面的第一种可能的实施方式,在第一方面的第二种可能的实施方式中,控制装置将第一网关所属的站点中的路由器与第二网关关联,具体包括:控制装置生成路由器与第二网关关联的第一转发表,并向第二网关发送第一转发表。其中,第一转发表用于第二网关将第一站点中的数据包向路由器转发。
通过实施上述步骤,控制装置可为第二网关生成第一转发表。相应地第二网关可依据该第一转发表将第一站点内的数据包发送给路由器,实现相互间的网络通信。避免了灾备场景下出现租户业务中断、受影响等问题,从而保证了业务通信的高可靠性。
结合第一方面以及第一方面的第一种和第二种可能的实施方式,在第一方面的第三种可能的实施方式中,控制装置将第一网关所属的站点中的路由器与第二网关关联,具体包括:控制装置生成路由器与第二网关关联的第二转发表,并向路由器发送第二转发表。其中,第二转发表用于路由器将第一站点中的数据包向第二网关转发。
通过实施上述步骤,控制装置同样可为路由器生成第二转发表。相应地,路由器可依据该第二转发表将第一站点内的数据包发送给第二网关,以实现相互间的网络通信。避免了灾备场景下出现租户业务中断、受影响等问题,从而保证了业务通信的高可靠性。
结合第一方面以及第一方面的第一种至第三种中的任一种或多种的可能的实施方式中,在第一方面的第四种可能的实施方式中,第一网关可通过探测报文监听第一网关所属的站点(第一站点)的网络是否发生了故障,进一步地可向控制装置发送故障消息和/或通知消息。便于控制装置依据该故障消息和/或通知消息来确定第一网关的状态,进而实现后续的容灾切换,相较于现有技术中利用动态路由协议切换网关的方式,提升了网络故障检测的便捷性和多样性。
第二方面,本发明实施例提供了一种控制装置,包括获取模块以及关联模块,其中,
获取模块,用于获取第一网关的状态;
关联模块,用于在第一网关的状态指示第一网关所属的站点的网络发生故障时,将第一网关所属的站点中的路由器与第二网关关联,第一网关与第二网关属于不同站点。
结合第二方面,在第二方面的第一种可能的实施方式中,获取模块具体用于获取第一网关的故障状态,其中,故障状态用于指示控制装置在预设时长内未接收到第一网关发送的通知消息,通知消息用于通知第一网关所属的站点的网络未发生故障,和/或,故障状态用于指示控制装置接收到第一网关发送的故障消息,故障消息用于通知第一网关所属的站点的网络发生了故障。
结合第二方面以及第二方面的第一种可能的实施方式中,在第二方面的第二种可能的实施方式中,所述将第一网关所属的站点中的路由器与第二网关关联,具体包括: 生成路由器与第二网关关联的第一转发表,第一转发表用于第二网关将第一网关所属的站点中的数据包向路由器转发;关联模块还用于向第二网关发送该第一转发表。
结合第二方面以及第二方面的第一种和第二种可能的实施方式中,在第二方面的第三种可能的实施方式中,所述将第一网关所属的站点中的路由器与第二网关关联,具体包括:生成路由器与第二网关关联的第二转发表,第二转发表用于路由器将第一网关所属的站点中的数据包向第二网关转发;关联模块还用于向路由器发送该第二转发表。
关于本发明实施例未示出或未描述的内容,可参见前述第一方面或第一方面的任意可能的实施方式中所描述的方法的相关阐述,这里不再赘述。
第三方面,本发明实施例提供了一计算设备,每个计算设备包括:处理器,存储器,通信接口和总线;处理器、通信接口、存储器通过总线相互通信;通信接口,用于接收和发送数据;存储器,用于存储指令;处理器,用于调用存储器中的程序指令,执行上述第一方面或第一方面的任意可能的实施方式中所描述的方法。
第四方面,提供了一种计算机非瞬态(non-transitory)存储介质,所述计算机非瞬态存储介质存储了用于容灾切换的程序代码。所述程序代码包括用于执行上述第一方面或第一方面的任意可能的实施方式中所描述的方法的指令。
第五方面,提供了一种芯片产品,以执行上述第一方面或第一方面的任意可能的实施方式中的方法。
通过实施本发明实施例,能够解决现有技术中存在的计算复杂度较高、动态路由协议配置比较复杂等问题,从而降低了容灾切换的复杂度。
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍。
图1是现有技术中提供的一种站点切换的示意图。
图2是本发明实施例提供的一种容灾切换系统的网络框架示意图。
图3是本发明实施例提供的一种容灾切换的场景示意图。
图4是本发明实施例提供的另一种容灾切换系统的网络框架示意图。
图5是本发明实施例提供的一种容灾切换方法的流程示意图。
图6是本发明实施例提供的一种控制装置的结构示意图。
图7是本发明实施例提供的计算设备的结构示意图。
下面将结合本发明的附图,对本发明实施例中的技术方案进行详细描述。
为解决现有技术中存在的动态路由协议配置比较复杂、计算复杂度较高等问题,本申请提出一种容灾切换的方法、所述方法适用的网络框架、应用场景以及相关设备。首先,参见图1是本发明实施例提供的一种容灾切换系统的网络框架示意图。如图2所示,该容灾切换系统100包括控制装置12以及该控制装置12管理的至少两个站点 14(图示以两个站点,第一站点和第二站点为例示出)。其中,
所述控制装置12跨站点部署,控制装置12可为所述至少两个站点的全局控制装置,也可为由每个站点对应部署的控制组件组成的集群。当每个站点都部署有控制组件时,一个站点出现故障后,另一个站点能够能够正常工作。换句话说,一个站点上部署的控制组件出现故障后,另一个站点上部署的控制组件能够正常运行,不影响控制装置的正常工作。
所述至少两个站点14位于同一个数据中心,具体可为由同一厂商提供的数据中心或云平台等。每个站点中都部署有网关140、路由器142、交换机144以及虚拟机146(virtual machine,VM)。其中,一个网关140下可关联一个或多个路由器142。路由器142将接收到的报文通过关联的网关140向所在站点外的设备发送,网络140将从所在站点外设备接收的报文发送给关联的路由器142。同一网关140下关联的多个路由器142可为同一个站点内部署的路由器,也可为跨站点的分布式路由器,本申请不做限定。一个路由器可与一个或多个交换机通信,相应地一个交换机支持和一个或多个路由器通信。一个交换机下可部署或管理一个或多个虚拟机。除此之外,本实施例中的数据中心还包括未在图2中绘制出的至少一个物理机。每个物理机与数据中心的交换机、路由器相连,并通过与路由器关联的网关进行与物理机所在站点的外部的设备进行外部通信。
在实际应用中,同一物理设备(例如物理主机或服务器)上可创建或部署一个或多个虚拟机,这些虚拟机挂载到一个交换机或一个路由器上,具体如图所示。本申请中的路由器具体可为虚拟路由器或者物理路由器,交换机具体可为虚拟交换机或物理交换机,本申请并不做限定。
可选地,每个站点中还可部署有二层网络代理设备148(I2-agent)、三层网络代理设备150(I3-agent)以及网关代理设备152。其中,二层网络代理设备148用于管理交换机144,例如通过二层网络代理设备与虚拟交互机通信、为交换机配置相应的二层转发表等。三层网络代理设备150用于管理路由器142,例如通过三层网络代理设备与路由器通信、为路由器配置相应地三层转发表等。网关代理设备152用于管理网关140,例如通过网关代理设备与网关通信、为网关配置相应地转发表等,关于如何配置以及更新各种转发表具体将在下文进行详述。
在实际应用中,二层网络代理设备、三层网络代理设备以及网关代理设备具体可为部署在计算节点上的软件模块或硬件单元,本申请不做限定。通常,一个计算节点上可对应部署一个二层网络代理设备、一个三层网络代理设备或者一个网关代理设备等,这里不做详述和限定。
图2中,每个站点中包括计算节点和网关节点,计算节点可通过隧道与网关节点通信,这里的隧道是指虚拟网络采用的隧道技术,例如虚拟可拓展的局域网(virtual extensible local area network,VXLAN)隧道、路由封装(generic routing encapsulation,GRE)隧道等。计算节点(具体可为物理设备)上部署有虚拟机,运行租户业务。网关节点(具体可为网关)承载南北向流量,即虚拟机访问外网(Internet)或者外网访问虚拟机的流量。在实际通信过程中,虚拟机所在的网络为私有网络,即虚拟机接入内部的私有网络,私有网络上部署有交换机以及路由器。路由器通过网关可访问外部 网络(简称外网)。
本申请中,每个路由器可维护或配置有两个网关,第一网关和第二网关,也可称为主网关和备网关。例如图示中两个站点的网关140可被配置为某个路由器142的主备网关。通常地,路由器通过第一网关(主网关)访问外网,即第一网关承载路由器的流量。第二网关(备网关)无通信的流量。当第一网关出现故障后,可将该路由器切换到第二网关下,以通过第二网关实现网络通信,从而不影响租户业务。
可选地,所述第一网关具体可为所述路由器当前所在站点的网关。所述第二网关为系统根据实际需求配置的,或者用户根据实际需求或个人喜好自定义设置的等。所述第一网关和所述第二网关位于不同的站点内。
其中,同一路由器配置的两个网关不相同。不同路由器各自配置的两个网关可以相同,也可不相同。图示中两个站点的路由器各自配置的主网关和备网关不同时,两个站点同时提供相应地业务服务。换句话说,第一站点中某个路由器配置的主网关为第二站点中另一路由器配置的备网关。
同一网关下关联的路由器可以为同一个站点的路由器,也可为跨站点的分布式路由器,本申请不做限定。此外,本申请中虚拟机(或租户)不感知网关的存在,即不感知主备网关的存在。
其次,介绍本申请适用的应用场景。具体的,如图3以两个站点为例,具体示出一种容灾切换的场景示意图。如图3中,当第一站点出现故障(或挂断)之后,该站点内网关1的检测模块(monitor)可检测到网络出口不通,出现了故障。此时,可向控制装置发送故障消息,该故障消息用于通知所述第一站点内的网络出现了故障。相应地,控制装置可将该网关1下关联的所有或部分路由器切换到第二站点内的网关2下,便于后续通过网关2实现相应的业务通信。可选地,同时触发更新网关2的转发表以及所述所有或部分路由器各自的转发表,具体在下文进行详细阐述。
其中,所述第一站点出现故障的原因有多种,例如断电以及网关1出现问题等等,本申请不做详述和限定。当第一站点出现故障后,为保证租户业务不受影响,需保证第一站点中控制面层涉及的虚拟机、交换机以及路由器等网络设备正常运行,进而通过网关切换,利用新切换的网关实现相应地业务通信。举例来说,当第一站点断电后,第一站点内的网络设备不能正常运行。为保证租户业务的正常使用,需在其他物理设备部署有相同业务服务的网络设备,这里的网络设备具体可包括但不限于虚拟机、交换机以及路由器等。或者,需在其他物理设备上重新创建或恢复所述第一站点内的网络设备,关于如何创建这些网络设备本申请这里不做详述。在第二站点创建的网络设备均与原第一站点的网络设备相同,相应地,第一站点内的网关1通过检测模块可检测到第一站点发生了故障,将网关1下关联的所有路由器(这里包括新建的路由器)切换到网关2下,即可通过网关2进行网络通信。
因此,需要说明的是:本申请中涉及的网络设备(具体可为虚拟机、交换机以及路由器等)呈分布式部署。如图4所示,以n个站点为例,图示部分示出交换机呈分布式部署的情况。当站点2出现故障时,一种情况为站点2中的网关2出现故障,则可将网关2下关联的路由器切换到另一站点的网关中,例如图示中站点1的网关1下, 以便后续通过网关1恢复相应地通信连接。另一种情况为站点2中的网络设备出现故障后,由于网络设备呈分布式部署,当站点2中的网络设备出现故障时,站点1中与网关2关联的网络设备运行正常,同样能保障业务的正常运行。即保证控制面上的网络设备正常工作。相应地,此时同样可将网关2下关联的站点1中的路由器切换到另一站点的网关中,以实现相应地通信连接。
除此之外,本发明实施例中所述的网络设备,可以是虚拟网络设备,也可以是物理网络设备,本发明实施例对此不做限制。
接着,参见图5是本发明实施例提供的一种容灾切换方法的流程示意图。所述方法应用于包括第一站点、第二站点以及控制装置在内的数据中心,所述第一站点以及所述第二站点受控于所述控制装置,即所述控制装置可管理所述第一站点以及所述第二站点。所述数据中心可以是图2、图3或图4中所示的数据中心,对应地,所述控制装置可以是图2中所示的控制装置12、图3中所示的数据中心中的控制装置或图4中所示的数据中心中的控制装置。所述第一站点部署有第一网关,所述第二站点部署有第二网关。如图5所示的方法可包括如下实施步骤:
步骤S101、第一网关向控制装置发送第一消息,第一消息用于指示第一网关的状态。相应地,所述控制装置接收所述第一消息,以获知所述第一网关的状态。
本申请中,第一网关可通过探测报文实时或周期性地检测自身网络出口的状态,即检测第一网关的状态,以确定第一网关所在的第一站点的网络是否发生了故障。所述第一网关的状态包括故障状态和正常状态,所述故障状态用于指示所述第一网关所在的第一站点的网络发生了故障。所述正常状态用于指示所述第一网关所在的第一站点的网络没发生故障。
步骤S102、所述控制装置获取所述第一网关的状态。
步骤S103、在所述第一网关的状态指示所述第一网关所属的第一站点的网络发生故障时,所述控制装置将第一站点中的路由器与第二网关关联,所述第一网关和所述第二网关属于不同站点。
控制装置在确定到第一站点的网络发生故障的情况下,可将第一站点内的路由器切换到第二网关下,以通过所述第二网关进行网络通信。防止第一站点出现故障后,导致第一站点出现业务中断等问题,有效保证业务通信的高可靠性。
下面阐述本申请涉及的一些具体实施例和可选实施例。
步骤S101中,第一网关可周期性或实时地监听第一网关的状态(具体可为网络出口的状态),以确定所述第一网关所在的第一站点的网络是否出现故障。其中,监听网关状态的实现方式有多种,例如第一网关向预设设备发送探测报文,如果在一段时间内未接收到响应报文,则可确定所述第一网关的状态为故障状态,该故障状态用于指示所述第一站点的网络发生了故障。否则,可确定所述第一网关的状态为正常状态,该正常状态用于指示所述第一站点的网络没有发生故障。又如,第一网关可周期性地向预设设备发送探测报文,通过检测接收响应报文的次数来确定所述第一网关的状态等等,本申请这里不做详述和限定。
相应地,在第一网关监听到所述第一网关的状态(即第一网关所在的第一站点的网络是否发生了故障)后,可向控制装置发送第一消息,用以通知或指示所述第一网关的状态。
具体的,在第一网关监听到第一网关的状态为正常状态,即是第一站点的网络没发生故障时,可向控制装置发送第一消息。这里的第一消息具体可为通知消息。该通知消息用于通知第一站点的网络没发生故障,或者通知所述第一网关的状态为故障状态。可理解的,由于网络或第一网关发生故障等原因,控制装置可能在一段预设时长内并未接收到该通知消息。所述预设时长为用户或系统自定义设置的,例如1分钟等。
可选地,在第一网关监听到所述第一网关的状态为故障状态,即是第一站点的网络发生了故障后,可向控制装置发送第一消息,这里的第一消息具体可为故障消息。该故障消息用于通知第一站点的网络发生了故障。
或者,所述第一网关在监听到所述第一网关的状态后,可向控制装置发送第一消息(具体可为通知消息)。这里的通知消息用于通知第一网关的状态,或者用于通知第一站点的网络是否发生故障等,本申请不做限定。
相应地步骤S102中,控制装置在接收第一消息后,可根据第一消息获知第一网关的状态,进而获知到第一站点的网络是否发生故障。具体的,当第一网关的状态为故障状态时,控制装置可确定第一站点的网络发生了故障。其中,所述故障状态具体可用于指示以下两种情况中的任一种或多种的组合:第一种,控制装置接收到第一网关发送的故障消息,该故障消息用于指示第一站点的网络发生了故障。第二种,控制装置在预设时长内没有接收到第一网关发送的通知消息,该通知消息用于指示或通知第一站点的网络发生了故障。
相应地,当第一网关的状态为正常状态,控制装置可确定第一站点的网络没发生故障,此时可结束流程。其中,所述正常状态是指除故障状态之外的其余状态。示例性地,正常状态具体可用于指示以下两种情况中的任一种或多种的组合:第一种,控制装置没接收到第一网关发送的故障消息。第二种,控制装置在预设时长内接收到第一网关发送的通知消息。关于故障消息和通知消息可参见前述实施例所述,这里不再赘述。
步骤S103中,本申请控制面涉及的网络设备(具体可为虚拟机、交换机以及路由器)均为分布式部署。由于第一站点内的虚拟机、交换机以及路由器呈分布式部署,当同种网络设备(例如路由器)中的一个出现故障或挂掉后,另一个网络设备(路由器)也能正常运行,并不影响控制层面的正常工作。因此,在第一站点的网络出现故障后,可将第一网关下关联的路由器切换到第二网关,以通过第二网关进行相应地网络通信。这里第一网关下关联的路由器的数量可为一个或者多个,并不做限定。本申请下文以一个路由器为例,进行相关内容的阐述。
在一些实施例中,控制装置将第一网关下关联的路由器切换到第二网关后,可为第二网关生成相应地第一转发表。换句话说,控制装置可生成路由器和第二网关关联的第一转发表。其中,该第一转发表用于建立路由器与第二网关之间的通信连接。具 体的,第二网关可根据该第一转发表将第一站点内的数据包转发给该路由器;或者转发来自路由器的数据包等。换句话说,第一转发表用于第二网关将第一站点内的数据包向路由器转发。这里的第一转发表具体可为网关的转发表(也可称为南北向转发表)。
相应地,控制装置生成该第一转发表后,将第一转发表发送给第二网关,便于第二网关依据该第一转发表更新自身的转发表,后续依据更新后的转发表建立和路由器之间的通信连接。
在一些实施例中,控制装置将第一网关下关联的路由器切换到第二网关后,可为该路由器生成相应地第二转发表。换句话说,控制装置可生成路由器和第二网关关联的第二转发表。其中,该第二转发表用于建立路由器与第二网关之间的通信连接。具体的,路由器可根据该第二转发表将第一站点内的数据包转发给第二网关;或者转发来自第二网关的数据包等。换句话说,第二转发表用于路由器将第一站点内的数据包向第二网关转发。这里的第二转发表具体可为路由器的三层转发表,例如流表或路由表,具体在本申请下文进行详述。
相应地,控制装置生成该第二转发表后,将第二转发表发送给路由器,便于路由器依据该第一转发表更新自身的转发表,后续依据更新后的转发表建立和路由器之间的通信连接。
在可选实施例中,步骤S101之前还涉及有网络设备的配置流程,具体如下实施步骤。这里的网络设备具体可包括但不限于交换机、路由器以及虚拟机等。
步骤S201、控制装置根据第一创建请求,创建虚拟机以及为所述虚拟机配置对应的交换机以及路由器。
控制装置可接收用户输入的第一创建请求,用于请求创建第一站点内的虚拟机并为所述虚拟机配置相应地交换机和路由器。相应地,控制装置接收第一创建请求后,可创建相应地虚拟机,并为该虚拟机指定或配置相应地路由器以及虚拟机,以创建或形成一条通信链路。
步骤S202、所述控制装置向所述交换机发送第一配置消息,用于配置所述交换机的二层转发表。
在指定交换机后,控制装置可向交换机(具体可为交换机对应的二层网络代理设备)发送第一配置消息,用于配置所述交换机的二层转发表。相应地,二层网络代理设备接收第一配置消息后,根据第一配置消息的指示配置所述交换机的二层转发表。
示例性地,如下表1给出一种基于虚拟局域网(virtual local area network,VLAN)的二层转发表。
表1
目的地址 | 地址类型 | VLAN | 目的端口 |
如上表1可知,交换机的二层转发表中可包括目的地址、目的端口、地址类型以及虚拟局域网VLAN。其中,目的地址是指数据包发往的目的地址或目的网络。目的端口是指数据包到达的目的端口。地址类型是指目的地址(IP地址)所属的分类。VLAN是指通信所在的虚拟局域网。目的端口是指数据包发送的目的端口,本申请这里不做详述和限定。
步骤S203、所述控制装置根据第二创建请求,创建路由器,为所述路由器配置第一网关(主网关)。
控制装置接收用户输入的第二创建请求。该第二创建请求用于请求创建相应地路由器,并为该路由器指定或分配相应地主网关(第一网关)。相应地,控制装置接收该第二创建请求后,根据第二创建请求的指示创建相应地路由器,并为该路由器分配相应地第一网关。
步骤S204、所述控制装置向所述路由器发送第二配置消息,用于配置所述路由器的三层转发表。
在为路由器指定第一网关后,控制装置可向路由器(具体可为路由器对应的三层网络代理设备)发送第二配置消息,用于配置该路由器的三层转发表。相应地,三层网络代理设备接收第二配置消息后,可根据第二配置消息的指示配置该路由器的三层转发表。其中,该三层转发表用于建立路由器和第一网关之间的通信连接。换句话说,路由器可依据该三层转发表转发自身接收的数据报文等。其中,路由器的三层转发表具体可为路由器的路由表或者流表(例如openflow流表),本申请不做限定。
示例性地,如下表2示出一种路由表。
目的地址 | 网络掩码 | 路由开销 | 输出端口 | 下一跳IP地址 |
由上表2可知,路由器的路由表包括目的地址、网络掩码、路由开销、输出端口以及下一跳IP地址。其中,输出端口是指数据包往哪个接口转发。目的地址是指数据包发往的目的地址或目的网络。网络掩码是指与目的地址一起标识目的主机或路由器所在的网段的地址。这里本申请不做详述和限定。
如下表3示出一种openflow流表。
包头域 | 计数器 | 动作 |
由上表3可知,openflow流表可包括包头域、计数器以及动作。其中,包头域是流表的标识。计数器用来计算流表的统计数据。动作表明了与该流表匹配的数据包应执行的操作,本申请这里不做详述。
步骤S205、控制装置向第一网关发送第三配置消息,用于配置所述第一网关的转发表。
在为路由器指定第一网关后,控制装置可向该第一网关(具体可为第一网关对应的网关代理设备)发送第三配置消息。相应地,网关代理设备接收第三配置消息,根据第三配置消息的指示为第一网关配置相应的转发表(也可称为南北向转发表)。该南北向转发表用于转发来自路由器的数据报文,或者将接收的数据报文发送至该路由器。
通过实施本发明实施例,可采用探测报文检测到网关所在站点的网络出现故障后,将该站点内的路由器切换到其他网关上,以保证网络通信正常,不影响租户业务。能够解决现有技术中存在的动态路由协议配置比较复杂以及计算复杂度较高等问题,从而降低了容灾切换的复杂度,提升了容灾切换的便捷性。
结合上文图1至图5实施例中的相关阐述,下面介绍本申请适用的相关设备以及系统。请参见图6是本发明实施例提供的一种控制装置的结构示意图。如图6所示的 控制装置600包括获取模块602以及关联模块604。其中,
所述获取模块602,用于获取第一网关的状态;
所述关联模块604,用于在所述第一网关的状态指示所述第一网关所属的站点的网络发生故障时,将所述第一网关所属的站点中的路由器与第二网关关联,所述第一网关与所述第二网关属于不同站点。
在一种可能的实施方式中,所述获取模块602具体用于获取第一网关的故障状态,其中,所述故障状态用于指示所述控制装置在预设时长内未接收到所述第一网关发送的通知消息,所述通知消息用于通知所述第一网关所属的站点的网络未发生故障,和/或,所述控制装置接收到所述第一网关发送的故障消息,所述故障消息用于通知所述第一网关所属的站点的网络发生了故障。
在一种可能的实施方式中,所述关联模块604具体用于生成所述路由器与所述第二网关关联的第一转发表,所述第一转发表用于所述第二网关将所述第一网关所属的站点中的数据包向所述路由器转发;向所述第二网关发送所述第一转发表。
在一种可能的实施方式中,所述关联模块604具体用于生成所述路由器与所述第二网关关联的第二转发表,所述第二转发表用于所述路由器将所述第一网关所属的站点中的数据包向所示第二网关转发;向所述路由器发送所述第二转发表。
其中,本发明实施例提供的控制装置具体可为图2所述实施例中的控制装置,其可用于执行如上图5所述方法实施例中的所有或部分实施步骤。关于本发明实施例中未示出或未描述的部分可参见前述图1至图5所述实施例中的相关阐述,这里不再赘述。
请参见图7,是本发明实施例提供的一种计算设备的示意图。如图7所示,本申请提供的计算设备1000,包括一个或多个处理器701、通信接口702和存储器703,处理器701、通信接口702和存储器703可通过总线或者其它方式连接,本发明实施例以通过总线704连接为例。其中:
处理器701可以由一个或者多个通用处理器构成,例如中央处理器(Central Processing Unit,CPU)。处理器701可用于运行相关的程序代码中以下任一项或多项功能模块的程序:获取模块以及关联模块等。也就是说,处理器701执行程序代码可以实现获取模块以及关联模块等功能模块中的任一项或多项的功能。其中,关于所述获取模块以及关联模块具体可参见前述实施例中的相关阐述。
通信接口702可以为有线接口(例如以太网接口)或无线接口(例如蜂窝网络接口或使用无线局域网接口),用于与其他模块/设备进行通信。例如,本申请实施例中通信接口602具体可用于接收第一网关发送的故障消息或通知消息等。
存储器703可以包括易失性存储器(Volatile Memory),例如随机存取存储器(Random Access Memory,RAM);存储器也可以包括非易失性存储器(Non-Volatile Memory),例如只读存储器(Read-Only Memory,ROM)、快闪存储器(Flash Memory)、硬盘(Hard Disk Drive,HDD)或固态硬盘(Solid-State Drive,SSD);存储器703还可以包括上述种类的存储器的组合。存储器703可用于存储一组程序代码,程序代码可以是提供如图6中所示的控制装置的代码,以便于处理器701调用存储器703中 存储的程序代码来运行如图6中所示的控制装置;程序代码可以是用于运行如图5所示的方法的代码,以便于处理器701调用存储器703中存储的程序代码以运行如上图5中所示的方法。
需要说明的,图7仅仅是本申请实施例的一种可能的实现方式,实际应用中,计算设备还可以包括更多或更少的部件,这里不作限制。关于本申请实施例中未示出或未描述的内容,可参见前述图5所述实施例中的相关阐述,这里不再赘述。
本发明实施例还提供一种计算机非瞬态存储介质,所述计算机非瞬态存储介质中存储有程序代码。所述程序代码包括用于执行如上图5所述方法的指令,当其在处理器上运行时,图5所示的方法流程得以实现。
本发明实施例还提供一种计算机程序产品,当所述计算机程序产品在处理器上运行时,图5所示的方法流程得以实现。
结合本发明实施例公开内容所描述的方法或者算法的步骤可以硬件的方式来实现,也可以是由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成,软件模块可以被存放于随机存取存储器(Random Access Memory,RAM)、闪存、只读存储器(Read Only Memory,ROM)、可擦除可编程只读存储器(Erasable Programmable ROM,EPROM)、电可擦可编程只读存储器(Electrically EPROM,EEPROM)、寄存器、硬盘、移动硬盘、只读光盘(CD-ROM)或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器,从而使处理器能够从该存储介质读取信息,且可向该存储介质写入信息。当然,存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外,该ASIC可以位于计算设备中。当然,处理器和存储介质也可以作为分立组件存在于计算设备中。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程,是可以通过计算机程序来指令相关的硬件来完成,所述的程序可存储于计算机可读取存储介质中,该程序在执行时,可包括如上述各方法的实施例的流程。而前述的存储介质包括:ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
Claims (14)
- 一种容灾切换方法,其特征在于,所述方法包括:获取第一网关的状态;在所述第一网关的状态指示所述第一网关所属的站点的网络发生故障时,所述控制装置将所述第一网关所属的站点中的路由器与第二网关关联,所述第一网关与所述第二网关属于不同站点。
- 根据权利要求1所述的方法,其特征在于,所述获取第一网关的状态包括:获取第一网关的故障状态,其中,所述故障状态用于指示所述控制装置在预设时长内未接收到所述第一网关发送的通知消息,所述通知消息用于通知所述第一网关所属的站点的网络未发生故障,和/或,所述故障状态用于指示所述控制装置接收到所述第一网关发送的故障消息,所述故障消息用于通知所述第一网关所属的站点的网络发生了故障。
- 根据权利要求1或2所述的方法,其特征在于,所述将所述第一网关所属的站点中的路由器与第二网关关联,具体包括:生成所述路由器与所述第二网关关联的第一转发表,所述第一转发表用于所述第二网关将所述第一网关所属的站点中的数据包向所述路由器转发;向所述第二网关发送所述第一转发表。
- 根据权利要求1-3中任一项所述的方法,其特征在于,将所述第一网关所属的站点中的路由器与第二网关关联,具体包括:生成所述路由器与所述第二网关关联的第二转发表,所述第二转发表用于所述路由器将所述第一网关所属的站点中的数据包向所述第二网关转发;向所述路由器发送所述第二转发表。
- 根据权利要求2-4中任一项所述的方法,其特征在于,所述方法还包括:所述第一网关通过探测报文监听所述第一网关所属的站点的网络是否发生了故障;所述第一网关向所述控制装置发送所述故障消息和/或所述通知消息。
- 一种控制装置,其特征在于,所述控制装置包括获取模块以及关联模块,其中,所述获取模块,用于获取第一网关的状态;所述关联模块,用于在所述第一网关的状态指示所述第一网关所属的站点的网络发生故障时,将所述第一网关所属的站点中的路由器与第二网关关联,所述第一网关与所述第二网关属于不同站点。
- 根据权利要求6所述的控制装置,其特征在于,所述获取模块,具体用于获取第一网关的故障状态,其中,所述故障状态用于指示所述控制装置在预设时长内未接收到所述第一网关发送的通知消息,所述通知消息 用于通知所述第一网关所属的站点的网络未发生故障,和/或,所述故障状态用于指示所述控制装置接收到所述第一网关发送的故障消息,所述故障消息用于通知所述第一网关所属的站点的网络发生了故障。
- 根据权利要求6或7所述的控制装置,其特征在于,所述将所述第一网关所属的站点中的路由器与第二网关关联,具体包括:生成所述路由器与所述第二网关关联的第一转发表,所述第一转发表用于所述第二网关将所述第一网关所属的站点中的数据包向所述路由器转发;所述关联模块,还用于向所述第二网关发送所述第一转发表。
- 根据权利要求6-8中任一项所述的控制装置,其特征在于,所述将所述第一网关所属的站点中的路由器与第二网关关联,具体包括:生成所述路由器与所述第二网关关联的第二转发表,所述第二转发表用于所述路由器将所述第一网关所属的站点中的数据包向所述第二网关转发;所述关联模块,还用于向所述路由器发送所述第二转发表。
- 一种计算设备,其特征在于,所述计算设备包括处理器和存储器,其中,所述存储器,用于存储程序代码;所述处理器,执行所述存储器中的代码,用于:获取第一网关的状态;在所述第一网关的状态指示所述第一网关所属的站点的网络发生故障时,将所述第一网关所属的站点中的路由器与第二网关关联,所述第一网关与所述第二网关属于不同站点。
- 根据权利要求10所述的计算设备,其特征在于,所述获取第一网关的状态,具体包括:用于获取第一网关的故障状态,其中,所述故障状态用于指示所述控制装置在预设时长内未接收到所述第一网关发送的通知消息,所述通知消息用于通知所述第一网关所属的站点的网络未发生故障,和/或,所述控制装置接收到所述第一网关发送的故障消息,所述故障消息用于通知所述第一网关所属的站点的网络发生了故障。
- 根据权利要求10或11所述的计算设备,其特征在于,所述将所述第一网关所属的站点中的路由器与第二网关关联,具体包括:生成所述路由器与所述第二网关关联的第一转发表,所述第一转发表用于所述第二网关将所述第一网关所属的站点中的数据包向所述路由器转发;向所述第二网关发送所述第一转发表。
- 根据权利要求10-12所述的计算设备,其特征在于,所述将所述第一网关所属的站点中的路由器与第二网关关联,具体包括:生成所述路由器与所述第二网关关联的第二转发表,所述第二转发表用于所述路由器将所述第一网关所属的站点中的数据包向所示第二网关转发;向所述路由器发送所述第二转发表。
- 一种计算机非瞬态存储介质,所述计算机非瞬态存储介质存储有计算机程序,其特征在于,所述计算机程序被计算设备执行时实现如权利要求1至5任一项所述方法。
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