CN105262820A - Cluster multi-computer mutual backup method based on Linux operating system - Google Patents
Cluster multi-computer mutual backup method based on Linux operating system Download PDFInfo
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- CN105262820A CN105262820A CN201510717013.5A CN201510717013A CN105262820A CN 105262820 A CN105262820 A CN 105262820A CN 201510717013 A CN201510717013 A CN 201510717013A CN 105262820 A CN105262820 A CN 105262820A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
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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
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
Abstract
The present invention discloses a cluster multi-computer mutual backup method based on a Linux operating system, belonging to a cluster mutual backup method. The cluster multi-computer mutual backup method solves the problems that how to achieve cluster high availability with the characteristics of multi-computer mutual backup and uninterrupted service, and how to apply GlusterFS (Gluster File System) and CTDB to cluster multi-computer mutual backup in a combined mode. The technical scheme is characterized in that: in the Linux operating system, a shared storage block of the GlusterFS is matched with a service monitoring switching service of the CTDB to achieve cluster multi-computer mutual backup, a floating IP, an FTP service, an NFS service, a Samba service and an application service are provided for the outside. The cluster multi-computer mutual backup method comprises the following deployment steps: (1) configuring a hosts file: writing information of all client nodes into the hosts file, and achieving password-free visit among the nodes; (2) configuring the GlusterFS: utilizing a GlusterFS cluster file system to provide a shared storage space for the all nodes, providing a lock and status shared storage space for the CTDB, creating a CTDB volume and an NAS volume; and (3) configuring the CTDB.
Description
Technical field
The present invention relates to a kind of method that cluster is standby mutually, specifically a kind of method standby mutually based on the cluster multimachine of (SuSE) Linux OS.
Background technology
Along with cloud computing, the Internet, the develop rapidly of large data, the performance requirement of people to machine is more and more higher, particularly to the concern of cluster high availability.Cluster is by a series of independently computer, is linked together by high speed interconnect networking, is externally provided the calculating unit of service by unified management.Describe a system through specialized designs in cluster high availability is usual, reduce downtime as far as possible, thus ensure the continuity of group service.
Usual cluster high availability has three kinds of working methods: master-slave mode, two-shipper duplex mode, cluster working method;
(1) master-slave mode: host work, standby host is monitored.When host fails, service is switched to standby host; After main frame recovers, service switchback is to main frame;
(2) two-shipper duplex mode: two main frames run respective services simultaneously and mutually monitor, and after ensureing an inefficacy, another can be taken over;
(3) cluster working method: cluster internal multiple host works together, the one or more service of each self-operating, after any host fails, its business can be taken over by other main frames.
(SuSE) Linux OS is the class Unix operating system of a set of free use and Free propagation, is the operating system of a multi-user based on POSIX and UNIX, multitask, support multithreading and multi-CPU.It can run main unix tool software, application program and procotol.It supports 32 and 64 hardware.Linux inherits the design philosophy that Unix take network as core, is the multiple-user network operating system of a stable performance.
GlusterFS(GlusterFileSystem) be free software, as a kind of distributed file system of increasing income, be applied in group system, there is good extensibility, PB memory capacity can be supported by expansion, flock together by the storage resources of TCP/IP or InfinibandRDMA network by physical distribution; Mainly solve cluster file system application, major function comprises: the network storage, stored in association (merging the memory space on multiple node), redundancy backup, the load balancing etc. of large files.
CTDB full name sambaCTDB, uses TDB database realizing based on samba, this database be used for depositing comprise samba or other application needed for temporary file.CTDB provides the database of a TDB type for multiple stage physical host in cluster.This database provides continuous print data message in order to ensure the business continuity of cluster for whole cluster, and this database is safeguarded automatically by CTDB.In addition, for realizing High Availabitity, CTDB provides the functions such as monitoring nodes, failover, IP adapter.It is worth mentioning that, the Manage Scripts of CTDB back-up system or application switches when High Availabitity.
Samba is the freeware realizing SMB agreement on Linux and unix system, is made up of server and client-side program.SMB(ServerMessagesBlock, information service block) be a kind of communication protocol of a kind of shared file on a local area network and printer, it is for providing the share service of the resource such as file and printer between the different computers in local area network (LAN).SMB agreement is client/server type agreement, and client computer can shared-file system, printer and other resources on access services device by this agreement.Making Samba not only can share resource with LAN main frame by arranging " NetBIOSoverTCP/IP ", resource can also be shared with global computer.
For the application demand of High-Performance Computing Cluster, large data sets group, mass memory cluster, multiple servers is under a linux operating system disposed, how can realize the multimachine unbroken cluster high availability of standby, business mutually, how by GlusterFS and CTDB connected applications in cluster multimachine is standby mutually, be problem in the urgent need to address at present.
Summary of the invention
Technical assignment of the present invention is to provide a kind of method standby mutually based on the cluster multimachine of (SuSE) Linux OS, solve and how can realize the multimachine unbroken cluster high availability of standby, business mutually, how by the problem of GlusterFS and CTDB connected applications in cluster multimachine is standby mutually.
Technical assignment of the present invention realizes in the following manner,
A kind of method standby mutually based on the cluster multimachine of (SuSE) Linux OS, in (SuSE) Linux OS, utilize the block of shared memory of GlusterFS, the service monitoring handed over service of collocation CTDB, realize cluster multimachine standby mutually, reach cluster high availability, Floating IP address, FTP service, NFS service, Samba service and application service are externally provided; Comprise following deploying step:
(1), hosts file is configured: the information of all client nodes is all written to hosts file, and ensures can mutually realize without cryptographic acess between node;
(2), configuration GlusterFS: use GlusterFS cluster file system to provide shared memory space for all nodes, and provide lock and status to share memory space for CTDB, create CTDB volume and NAS rolls up;
(3), configure CTDB, configuration step is as follows:
(a), configuration ctdb file, on client1 node, the ctdb file under amendment/mnt/gluster catalogue;
(b), configuration nodes file, on client1 node, the clustered node file (nodes) under amendment/mnt/gluster catalogue;
(c), amendment public_addresses file, definition Floating IP address, on client1 node, amendment public network ip file (public_addresses);
(d), amendment nfs file, on client1 node, the file nfs under amendment/mnt/gluster catalogue;
(e), change export file;
(f), amendment directory permission, on all client nodes, amendment/mnt/icfs directory permission;
(g), clear up original configuration, delete the original configuration file information of nfs, the ctdb on all client nodes;
(h), connect, all client nodes are flexible coupling to these file set ups, to load these configuration files during software startup;
(i), start ctdb, start ctdb process at each node of interface node cluster.
The step creating CTDB volume and NAS volume in step (2) is as follows:
(a), startup service;
(b), establishment storage pool;
(c), establishment volume, step is as follows: first, creates volume test-volume, a test-volume and is used for depositing the lock file of ctdb, the profile information of smb, nfs and ctdb; Then ,/root/gluster catalogue is automatically created at two nodes; Subsequently, replica ensures be synchronized to another node when a node writes data;
D (), carry unify storage volume, step is as follows: first, create mount directory respectively on two interface nodes; Then, carry operation (applying the IP of self) is performed at two client nodes respectively; Finally, by df order, the volume of carry the machine, checks whether carry is successful after carry;
(e), preservation configuration file: the configuration file that saving interface node cluster needs in unified storage volume, comprises lock file (lockfile), samba configuration file (smb.conf), nfs configuration file (exports), ctdb configuration file (ctdb), clustered node file (nodes), public network IP file (public_addresses).
Floating IP address: as the Operational Visit entrance of all clusters,
FTP serves: provide File Upload and Download service,
NFS serves: provide file-sharing service between (SuSE) Linux OS,
Samba serves: provide (SuSE) Linux OS to provide file-sharing service to Windows operating system,
Application service: the service needing configuration documentation is provided.
A kind of method standby mutually based on the cluster multimachine of (SuSE) Linux OS of the present invention has the following advantages:
1, disposed by multiple servers under (SuSE) Linux OS, realize that two-shipper under the (SuSE) Linux OS of current main-stream is active and standby, multimachine is active and standby and business such as not to interrupt at the function;
2, utilize the block of shared memory thought of GlusterFS, the service monitoring handed over service of collocation CTDB, realizes high availability scheme, externally provides Floating IP address, FTP service, NFS service, Samba service and application service;
3, achieve high-availability cluster by dispositions method of the present invention, the integrity service of cluster can be made can to use as far as possible, thus reduce the loss brought by computer hardware and software fallibility.If certain node failure, its redundant node is by its responsibility of time inner connecting tube in a few second.Therefore, for user, cluster is shut down never.The Main Function of high-availability cluster software is exactly the automation realizing trouble shooting and business switching.Only have the high-availability cluster of two nodes to be also called two-node cluster hot backup, namely use two-server to back up mutually.When a station server breaks down, service role can be born by another station server, thus when not needing manual intervention, automatic guarantee system can continue externally to provide service.Two-node cluster hot backup is the one of high-availability cluster, and highly available cluster system more can support plural node, provides more than two-node cluster hot backup, more senior function, more can meet the changes in demand that user constantly occurs;
4, achieve the active and standby and cluster multimachine of two-shipper by dispositions method of the present invention, achieve high-availability cluster; The present invention does not relate to Information Security, and the safety of data, by the storage support of bottom, is only to provide the continuity of service here.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Accompanying drawing 1 is the Organization Chart of a kind of GlusterFS+CTDB of the method standby mutually based on the cluster multimachine of (SuSE) Linux OS.
Embodiment
With reference to Figure of description and specific embodiment, a kind of method standby mutually based on the cluster multimachine of (SuSE) Linux OS of the present invention is described in detail below.
Embodiment:
As shown in Figure 1, in figure, InfiniBand framework is a kind of support how concurrent link " Convertion cable " technology, and in this technology, often kind of link can reach the speed of service of 2.5Gbps.This framework speed when a link is 500MB/ second, and when four links, speed is 2GB/ second, and when 12 links, speed can reach 6GB/ second.RDMA(RemoteDirectMemoryAccess) technology full name remote direct data access, produces to solve the delay of servers' data process in Internet Transmission; The advantage of RDMA is to utilize traditional network hardware with TCP/IP and Ethernet standard to set up internet, InfiniBand network and realize the network support RDMA of virtual interface framework.Privatenet is internal network.
A kind of method standby mutually based on the cluster multimachine of (SuSE) Linux OS of the present invention, in (SuSE) Linux OS, utilize the block of shared memory of GlusterFS, the service monitoring handed over service of collocation CTDB, realize cluster multimachine standby mutually, reach cluster high availability, Floating IP address, FTP service, NFS service, Samba service and application service are externally provided; Floating IP address: as the Operational Visit entrance of all clusters, FTP serves: provide File Upload and Download service, NFS serves: provide file-sharing service between (SuSE) Linux OS, Samba serves: provide (SuSE) Linux OS to provide file-sharing service to Windows operating system, application service: to provide the service needing configuration documentation; Comprise following deploying step:
(1), hosts file is configured: the information of all client nodes is all written to hosts file, and ensures can mutually realize without cryptographic acess between node;
(2), GlusterFS is configured: use GlusterFS cluster file system to provide shared memory space for all nodes, and provide lock and status to share memory space for CTDB, create CTDB volume and NAS volume, wherein, CTDB volume and NAS volume all adopt stripevolume, select distribute; The step creating CTDB volume and NAS volume is as follows:
(a), startup service; Code operation is as follows:
[rootclient1~]#serviceglusterdstart
[rootclient2~]#serviceglusterdstart
[rootclient1~]#chkconfigglusterdon；
(b), establishment storage pool; Code operation is as follows:
[rootclient1 ~] #glusterpeerprobeclient2//interpolation server is to storage pool
Probesuccessful
[rootclient1 ~] #glusterpeerstatus//checking member condition
NumberofPeers:1
Hostname:client2
Uuid:8d9c00aa-6683-4b62-83e7-a4011992add8
State:PeerinCluster(Connected)；
(c), establishment volume, step is as follows: first, creates volume test-volume, a test-volume and is used for depositing the lock file of ctdb, the profile information of smb, nfs and ctdb; Then ,/root/gluster catalogue is automatically created at two nodes; Subsequently, replica ensures be synchronized to another node when a node writes data; Code operation is as follows:
[rootclient1~]#glustervolumecreatetest-volumereplica2transport
tcpclient1:/root/glusterclient2:/root/gluster
[rootclient1~]#glustervolumestarttest-volume；
D (), carry unify storage volume, step is as follows: first, and on two interface nodes, create mount directory respectively, code operation is as follows:
[rootclient1~]#mkdir/mnt/gluster
[rootclient2~]#mkdir/mnt/gluster；
Then, carry operation (applying the IP of self) is performed at two client nodes respectively;
Finally, the volume of carry the machine (can not directly write under/root/gluster catalogue), code operation is as follows:
[rootclient1~]#mount-tglusterfs192.168.2.21:/test-volume/mnt/gluster
[rootclient2~]#mount-tglusterfs192.168.2.22:/test-volume/mnt/gluster；
Check whether carry is successful by df order after carry; (why not be added to/etc/fstab in? because a time deactivation glusterfs will be spent when startup of server to serve, be added to/etc/fstab in be can not successful carry);
(e), preservation configuration file: the configuration file that saving interface node cluster needs in unified storage volume, comprises lock file (lockfile), samba configuration file (smb.conf), nfs configuration file (exports), ctdb configuration file (ctdb), clustered node file (nodes), public network IP file (public_addresses).
(3), configure CTDB, configuration step is as follows:
(a), configuration ctdb file, on client1 node, the ctdb file under amendment/mnt/gluster catalogue, code operation is as follows:
CTDB_RECOVERY_LOCK=/mnt/gluster/lockfile
CTDB_PUBLIC_INTERFACE=eth0(correspondence connects the network interface card of customer network)
CTDB_PUBLIC_ADDRESSES=/etc/ctdb/public_addresses
CTDB_MANAGES_SAMBA=yes
CTDB_MANAGES_WINBIND=yes
CTDB_MANAGES_NFS=yes
CTDB_MANAGES_VSFTPD=yes
CTDB_NODES=/etc/ctdb/nodes
CTDB_DEBUGLEVEL=ERR；
(b), configuration nodes file, on client1 node, the clustered node file (nodes) under amendment/mnt/gluster catalogue, operates as follows:
192.168.2.101
192.168.2.102，
These two ip are the internal network ip forming interface node cluster;
(c), amendment public_addresses file, definition Floating IP address, on client1 node, amendment public network ip file (public_addresses), as follows: 192.168.100.101/24eth0;
(d), amendment nfs file, on client1 node, the file nfs under amendment/mnt/gluster catalogue, nfs file modification is as follows:
CTDB_MANAGES_NFS=yes
NFS_TICKLE_SHARED_DIRECTORY=/mnt/gluster/nfs-tickles
STATD_PORT=595
STATD_OUTGOING_PORT=596
MOUNTD_PORT=597
RQUOTAD_PORT=598
LOCKD_UDPPORT=599
LOCKD_TCPPORT=599
STATD_SHARED_DIRECTORY=/mnt/gluster/nfs-state
NFS_HOSTNAME="ctdb"
STATD_HOSTNAME="$NFS_HOSTNAME-P
"$STATD_SHARED_DIRECTORY/$PUBLIC_IP"-H/etc/ctdb/statd-callout-p97"；
(e), change export file, code operation is as follows:
/home*(rw,fsid=09b4f041-8b20-4377-9af3-2658ae2ecba2)；
(f), amendment directory permission, on all client nodes, amendment/mnt/icfs directory permission, code is as follows: [rootclient1 ~] #chmod-R777/mnt/icfs/;
(g), clear up original configuration, delete the original configuration file information of nfs, the ctdb on all client nodes, all client nodes perform following operation:
[rootclient1~]#rm-rf/etc/samba/smb.conf
[rootclient1~]#rm-rf/etc/sysconfig/ctdb
[rootclient1~]#rm-rf/etc/sysconfig/nfs
[rootclient1~]#rm-rf/etc/exports；
(h), connect, all client nodes are flexible coupling to these file set ups, to load these configuration files during software startup;
(i), start ctdb, start ctdb process at each node of interface node cluster, operation below total interface node performs:
[rootclient1~]#servicerpcbindrestart
[rootclient1~]#servicectdbstart
[rootclient2~]#servicerpcbindrestart
[rootclient2~]#servicectdbstart。
By embodiment above, described those skilled in the art can be easy to realize the present invention.But should be appreciated that the present invention is not limited to above-mentioned embodiment.On the basis of disclosed execution mode, described those skilled in the art can the different technical characteristic of combination in any, thus realizes different technical schemes.
Except the technical characteristic described in specification, be the known technology of those skilled in the art.
Claims (3)
1. one kind based on the standby mutually method of the cluster multimachine of (SuSE) Linux OS, it is characterized in that in (SuSE) Linux OS, utilize the block of shared memory of GlusterFS, the service monitoring handed over service of collocation CTDB, realize cluster multimachine standby mutually, Floating IP address, FTP service, NFS service, Samba service and application service are externally provided; Comprise following deploying step:
(1), hosts file is configured: the information of all client nodes is all written to hosts file, and ensures can mutually realize without cryptographic acess between node;
(2), configuration GlusterFS: use GlusterFS cluster file system to provide shared memory space for all nodes, and provide lock and status to share memory space for CTDB, create CTDB volume and NAS rolls up;
(3), configure CTDB, configuration step is as follows:
(a), configuration ctdb file, on client1 node, the ctdb file under amendment/mnt/gluster catalogue;
(b), configuration nodes file, on client1 node, the clustered node file under amendment/mnt/gluster catalogue;
(c), amendment public_addresses file, definition Floating IP address, on client1 node, amendment public network ip file;
(d), amendment nfs file, on client1 node, the file nfs under amendment/mnt/gluster catalogue;
(e), change export file;
(f), amendment directory permission, on all client nodes, amendment/mnt/icfs directory permission;
(g), clear up original configuration, delete the original configuration file information of nfs, the ctdb on all client nodes;
(h), connect, all client nodes are flexible coupling to these file set ups, to load these configuration files during software startup;
(i), start ctdb, start ctdb process at each node of interface node cluster.
2. a kind of method standby mutually based on the cluster multimachine of (SuSE) Linux OS according to claim 1, is characterized in that the step creating CTDB volume and NAS volume in step (2) is as follows:
(a), startup service;
(b), establishment storage pool;
(c), establishment volume, step is as follows: first, creates volume test-volume, a test-volume and is used for depositing the lock file of ctdb, the profile information of smb, nfs and ctdb; Then ,/root/gluster catalogue is automatically created at two nodes; Subsequently, replica ensures be synchronized to another node when a node writes data;
D (), carry unify storage volume, step is as follows: first, create mount directory respectively on two interface nodes; Then, perform carry operation at two client nodes respectively, wherein, apply the IP of self; Finally, by df order, the volume of carry the machine, checks whether carry is successful after carry;
E (), preservation configuration file: the configuration file that saving interface node cluster needs in unified storage volume, comprise lock file, samba configuration file, nfs configuration file, ctdb configuration file, clustered node file, public network IP file.
3. a kind of method standby mutually based on the cluster multimachine of (SuSE) Linux OS according to claim 1, is characterized in that Floating IP address: as the Operational Visit entrance of all clusters,
FTP serves: provide File Upload and Download service,
NFS serves: provide file-sharing service between (SuSE) Linux OS,
Samba serves: provide (SuSE) Linux OS to provide file-sharing service to Windows operating system,
Application service: the service needing configuration documentation is provided.
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