CN114584373A - Public network access limiting method and system for public cloud MySQL cluster - Google Patents
Public network access limiting method and system for public cloud MySQL cluster Download PDFInfo
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Abstract
The invention particularly relates to a public network access limiting method and system of a public cloud MySQL cluster. The public network access limiting method and system of the public cloud MySQL cluster are characterized in that an elastic public network IP is created on a public cloud, the elastic public network IP is bound on an elastic network card, and meanwhile, the elastic network card is bound on a Master node virtual machine of the MySQL cluster; when the MySQL cluster fails and the Master node is abnormal, triggering a MySQL cluster disaster tolerance mechanism to perform Master-slave switching, unbinding the elastic network card from the old Master node, binding the elastic network card to the new Master node after the Master-slave switching, and migrating the elastic public network IP along with the elastic network card to ensure that the public network IP can always access the Master node. According to the public network access limiting method and system of the public cloud MySQL cluster, public network access, IP and IP section access limitation of the MySQL cluster are achieved based on the public cloud, meanwhile, the public network IP and the MySQL cluster are high in availability, services can be normally provided after disaster tolerance switching occurs, and usability of RDS MySQL of a cloud database and safety of user use are enhanced.
Description
Technical Field
The invention relates to the technical field of cloud computing, in particular to a public network access limiting method and system of a public cloud MySQL cluster.
Background
The existing cloud database RDS MySQL can only be accessed by other resources in the same region and the same special network through an intranet address, and resources outside the special network cannot be accessed. If the public network IP is bound on a cloud database RDS MySQL virtual machine (Master node), the requirement that external network resources access the cloud database RDS MySQL can be met. By using the method, the external network resources can access the cloud database RDS MySQL. However, the cloud database RDS MySQL cluster has a plurality of nodes, when the cluster is abnormal and a fault is transferred, the public network IP is still bound to the original virtual machine (old master node), and the cloud database RDS MySQL cluster cannot be normally accessed.
Based on the situation, the invention provides a public network access limiting method and system of a public cloud MySQL cluster.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a simple and efficient public network access limiting method and system of a public cloud MySQL cluster.
The invention is realized by the following technical scheme:
a public network access limiting method of a public cloud MySQL cluster is characterized in that: the method comprises the following steps:
step 1: creating an elastic public network IP on a public cloud, wherein the elastic public network IP is used as an address for external access of a cloud database RDS MySQL; the elastic public network IP is bound and unbound without stopping, and is dynamically bound with a cloud server or load balancing;
step 2: creating an elastic network card supporting hot plug, and binding an elastic public network IP on the elastic network card;
and step 3: binding the elastic network card on a Master node virtual machine of the MySQL cluster;
and 4, step 4: based on the characteristic that the elastic network card supports hot plug, when the MySQL cluster fails and the Master node is abnormal, the MySQL cluster disaster tolerance mechanism is triggered to carry out Master-slave switching, the elastic network card is unbound from the old Master node, after the Master-slave switching, the elastic network card is bound to the new Master node, and the elastic public network IP migrates along with the elastic network card, so that the public network IP can always access the Master node.
The elastic network card supports binding of a plurality of intranet IPs, and each intranet IP can be bound with an independent elastic public network IP; a plurality of elastic network cards bound by the cloud host can belong to different subnets, and each subnet can independently set a route forwarding strategy, so that network isolation among the network cards is realized;
the elastic network card can be flexibly migrated between the cloud hosts in the private network and the available area, and in the migration process, the elastic network card keeps the association relation with the bound intranet IP, the elastic public network IP and the security group.
And in the step 2, a hot-plug network card configuration routing strategy script is created, and when the flexible network card is installed on a Master node to obtain a lease, a routing strategy of the flexible network card is automatically configured.
The hot-plug network card configuration routing strategy script is automatically triggered after the virtual machine is bound by the elastic network card; the method comprises the following steps that when the elastic network card is bound with a Master node or operation is restarted, a routing strategy is reconfigured, and the method specifically comprises the following steps:
step 2.1: screening out a route distributed based on an elastic network card from a route strategy ip rule, wherein the route scope is respectively host, link, global and site;
step 2.2: and moving the screened route to the route table ip route.
In the step 3, a new security group, namely an extranet security group is created, and extranet IP access is restricted; and binding the external network security group on the elastic network card to realize external network IP limitation on accessing the cloud database RDS MySQL.
The external network security group limits the public network IP by modifying the network access rule of the security group, limits part of the public network IP to access the RDS MySQL by the form of the white list, supports adding a single IP or IP segment (CIDR) white list, and can only release the port, TCP protocol and ICMP protocol accessed by the MySQL cluster, thereby reducing the risk of virtual machine intrusion.
In the step 3, a new security group, namely an intranet security group, is created, and the access to the intranet IP is limited; the intranet security group is bound on a user network card, and only a port, a TCP (transmission control protocol) protocol and an ICMP (internet control protocol) protocol accessed by the MySQL cluster are released by limiting partial intranet IP to access the RDS MySQL by modifying security group rules.
The intranet security group also provides a security group binding function, and resources under the remote security group and resources under the local security group are communicated with each other through a network under the same special network; and adding the security group of the cloud server as a remote security group of the intranet security group, wherein the cloud server can access the cloud database RDS MySQL.
The invention discloses a system of a public network access limiting method based on a public cloud MySQL cluster, which is characterized in that: the system comprises an elastic public network IP, an elastic network card, a routing strategy management module, an internal network security group and an external network security group;
the elastic public network IP is bound on an elastic network card and used as an address accessed by the cloud database RDS MySQL; the elastic public network IP is bound and unbound without stopping, and is dynamically bound with a cloud server or load balancing;
the elastic network card supports hot plug and is bound on a Master node virtual machine of the MySQL cluster; simultaneously, binding of a plurality of intranet IPs is supported, and each intranet IP can be bound with an independent elastic public network IP;
the routing strategy management module is responsible for configuring a routing strategy of the elastic network card and reconfiguring the routing strategy when the elastic network card is bound with the Master node or is restarted to realize the unbinding of the elastic network card and the old Master node and the binding of the elastic network card and the new Master node and ensure that the public network IP can always access the Master node;
the external network security group is bound on the elastic network card and is responsible for limiting the access to the external network IP, so that the external network IP limitation of accessing the cloud database RDS MySQL is realized;
the intranet security group is bound on a user network card and is responsible for limiting intranet IP access and providing a security group binding function.
The invention has the beneficial effects that: according to the public network access limiting method and system of the public cloud MySQL cluster, public network access, IP and IP section access limitation of the MySQL cluster are achieved based on the public cloud, meanwhile, the public network IP and the MySQL cluster are high in availability, services can be normally provided after disaster tolerance switching occurs, and the availability of RDS MySQL of a cloud database is enhanced;
the user can conveniently access the cloud database RDS MySQL under the public network environment, and the safety of the use of the cloud database RDS MySQL user is enhanced by modifying the IP white list to limit the IP or the IP section to access the cloud database RDS MySQL.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a public network access limiting method of the public cloud MySQL cluster.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the embodiment of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The method supports public network access to a public cloud relational database RDS MySQL product, supports the function of an external network white list, can configure an IP white list, only allows configured public network IP or IP segments to access to an RDS MySQL example, supports the functions of an internal network white list and a binding security group, and realizes the restriction of internal network IP access to the RDS MySQL example.
The public network access limiting method of the public cloud MySQL cluster comprises the following steps:
step 1: creating an elastic public network IP on a public cloud, wherein the elastic public network IP is used as an external access address of a cloud database RDS MySQL; the elastic public network IP is bound and unbound without stopping, and is dynamically bound with a cloud server or load balancing;
step 2: creating an elastic network card supporting hot plug, and binding the elastic public network IP on the elastic network card;
and step 3: binding the elastic network card on a Master node virtual machine of the MySQL cluster;
and 4, step 4: based on the characteristic that the elastic network card supports hot plug, when the MySQL cluster fails and the Master node is abnormal, the MySQL cluster disaster tolerance mechanism is triggered to carry out Master-slave switching, the elastic network card is unbound from the old Master node, after the Master-slave switching, the elastic network card is bound to the new Master node, and the elastic public network IP migrates along with the elastic network card, so that the public network IP can always access the Master node.
The elastic network card supports binding of a plurality of intranet IPs, and each intranet IP can be bound with an independent elastic public network IP; a plurality of elastic network cards bound by the cloud host can belong to different subnets, and each subnet can independently set a route forwarding strategy, so that network isolation among the network cards is realized;
the elastic network card can be flexibly migrated between the cloud hosts in the private network and the available area, and in the migration process, the elastic network card keeps the association relation with the bound intranet IP, the elastic public network IP and the security group.
And in the step 2, a hot-plug network card configuration routing strategy script is created, and when the flexible network card is installed on a Master node to obtain a lease, a routing strategy of the flexible network card is automatically configured.
The hot-plug network card configuration routing strategy script is automatically triggered after the elastic network card is bound with the virtual machine; the method comprises the following steps that when the elastic network card is bound with a Master node or operation is restarted, a routing strategy is reconfigured, and the method specifically comprises the following steps:
step 2.1: screening out a route distributed based on an elastic network card from a route strategy ip rule, wherein the route scope is respectively host, link, global and site;
step 2.2: and moving the screened route to the route table ip route.
In the step 3, a new security group, namely an extranet security group is created, and extranet IP access is restricted; and binding the external network security group on the elastic network card to realize external network IP limitation on accessing the cloud database RDS MySQL.
The security group is a virtual firewall with a state packet filtering function, is used for setting a network access control strategy among one or more cloud servers, can add cloud server instances with the same network security isolation requirements in the same region into the same security group, and performs security filtering on the access flow of the cloud servers through access rules in the group.
The external network security group limits the public network IP by modifying the access rules of the security group, limits part of the public network IP to access the cloud database RDS MySQL by the form of the white list, supports adding a single IP or IP section (CIDR) white list, and can only release the port accessed by the MySQL cluster, the TCP protocol and the ICMP protocol, thereby reducing the risk of virtual machine intrusion.
In the step 3, a new security group, namely an intranet security group, is created, and the access to the intranet IP is limited; the intranet security group is bound on a user network card, and only a port, a TCP (transmission control protocol) protocol and an ICMP (internet control protocol) protocol accessed by the MySQL cluster are released by limiting partial intranet IP to access the RDS MySQL by modifying security group rules.
The intranet security group also provides a security group binding function, and resources under the remote security group and resources under the local security group are communicated through a network under the same special network; and adding the security group of the cloud server as a remote security group of the intranet security group, wherein the cloud server can access the cloud database RDS MySQL.
The system of the public network access limiting method based on the public cloud MySQL cluster comprises an elastic public network IP, an elastic network card, a routing strategy management module, an internal network security group and an external network security group;
the elastic public network IP is bound on the elastic network card and used as an address accessed by the cloud database RDS MySQL to the outside; the elastic public network IP is bound and unbound without stopping, and is dynamically bound with a cloud server or load balancing;
the elastic network card supports hot plug and is bound on a Master node virtual machine of the MySQL cluster; simultaneously, binding of a plurality of intranet IPs is supported, and each intranet IP can be bound with an independent elastic public network IP;
the routing strategy management module is responsible for configuring a routing strategy of the elastic network card and reconfiguring the routing strategy when the elastic network card is bound with the Master node or is restarted to realize the unbinding of the elastic network card and the old Master node and the binding of the elastic network card and the new Master node and ensure that the public network IP can always access the Master node;
the external network security group is bound on the elastic network card and is responsible for limiting the access to the external network IP, so that the external network IP limitation of accessing the cloud database RDS MySQL is realized;
the intranet security group is bound on a user network card and is responsible for limiting intranet IP access and providing a security group binding function.
The above-described embodiment is only one specific embodiment of the present invention, and general changes and substitutions by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.
Claims (8)
1. A public network access limiting method of a public cloud MySQL cluster is characterized in that: the method comprises the following steps:
step 1: creating an elastic public network IP on a public cloud, wherein the elastic public network IP is used as an address for external access of a cloud database RDS MySQL; when the elastic public network IP is bound and unbound, the machine does not need to be stopped, and the elastic public network IP is dynamically bound with a cloud server or a load in a balanced manner;
step 2: creating an elastic network card supporting hot plug, and binding an elastic public network IP on the elastic network card;
and step 3: binding the elastic network card on a Master node virtual machine of the MySQL cluster;
and 4, step 4: based on the characteristic that the elastic network card supports hot plug, when the MySQL cluster fails and the Master node is abnormal, the MySQL cluster disaster tolerance mechanism is triggered to carry out Master-slave switching, the elastic network card is unbound from the old Master node, after the Master-slave switching, the elastic network card is bound to the new Master node, and the elastic public network IP migrates along with the elastic network card, so that the public network IP can always access the Master node.
2. The public network access limiting method of the public cloud MySQL cluster according to claim 1, characterized in that: the elastic network card supports binding of a plurality of intranet IPs, and each intranet IP can be bound with an independent elastic public network IP; a plurality of elastic network cards bound by the cloud host can belong to different subnets, and each subnet can independently set a route forwarding strategy, so that network isolation among the network cards is realized;
in the migration process, the elastic network card keeps the association relation with the bound intranet IP, the elastic public network IP and the security group.
3. The public network access limiting method of the public cloud MySQL cluster according to claim 2, characterized in that: in the step 2, a hot-plug network card configuration routing strategy script is created, and when the flexible network card is installed on a Master node to obtain a lease, a routing strategy of the flexible network card is automatically configured;
the hot-plug network card configuration routing strategy script is automatically triggered after the elastic network card is bound with the virtual machine; the method comprises the following steps that when the elastic network card is bound with a Master node or operation is restarted, a routing strategy is reconfigured, and the method specifically comprises the following steps:
step 2.1: screening out a route distributed based on an elastic network card from a route strategy ip rule, wherein the route scope is respectively host, link, global and site;
step 2.2: and moving the screened route to the route table ip route.
4. The public network access limiting method of the public cloud MySQL cluster according to claim 1, characterized in that: in the step 3, a new security group, namely an extranet security group is created, and extranet IP access is restricted; and binding the external network security group on the elastic network card to realize external network IP limitation on accessing the cloud database RDS MySQL.
5. The public network access limiting method of the public cloud MySQL cluster of claim 4, wherein: the external network security group limits the public network IP by modifying the network access rules of the security group, limits part of the public network IP to access the cloud database RDS MySQL in the form of a white list, supports adding a single IP or IP section CIDR white list, and can only release the port accessed by the MySQL cluster, the TCP protocol and the ICMP protocol, thereby reducing the risk of virtual machine intrusion.
6. The public network access limiting method of the public cloud MySQL cluster according to claim 1, characterized in that: in the step 3, a new security group, namely an intranet security group, is created, and the access to the intranet IP is limited; the intranet security group is bound on a user network card, and only a port, a TCP protocol and an ICMP protocol accessed by a MySQL cluster are released by limiting partial intranet IP to access the RDS MySQL by modifying security group rules.
7. The public network access limiting method of the public cloud MySQL cluster of claim 6, wherein: the intranet security group also provides a security group binding function, and resources under the remote security group and resources under the local security group are communicated with each other through a network under the same special network; and adding the security group of the cloud server as a remote security group of the intranet security group, wherein the cloud server can access the cloud database RDS MySQL.
8. The system of the public network access limiting method of the public cloud MySQL cluster according to any one of claims 1 to 7, wherein: the system comprises an elastic public network IP, an elastic network card, a routing strategy management module, an internal network security group and an external network security group;
the elastic public network IP is bound on an elastic network card and used as an address accessed by the cloud database RDS MySQL; the elastic public network IP is bound and unbound without stopping, and is dynamically bound with a cloud server or load balancing;
the elastic network card supports hot plug and is bound on a Master node virtual machine of the MySQL cluster; simultaneously, binding of a plurality of intranet IPs is supported, and each intranet IP can be bound with an independent elastic public network IP;
the routing strategy management module is responsible for configuring a routing strategy of the elastic network card and reconfiguring the routing strategy when the elastic network card is bound with the Master node or is restarted to realize the unbinding of the elastic network card and the old Master node and the binding of the elastic network card and the new Master node and ensure that the public network IP can always access the Master node;
the external network security group is bound on the elastic network card and is responsible for limiting the access to the external network IP, so that the external network IP limitation of accessing the cloud database RDS MySQL is realized;
the intranet security group is bound on a user network card and is responsible for limiting intranet IP access and providing a security group binding function.
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