rocket failover

Label: SQL Server AlwaysOn technology relies on the Windows WSFC feature, the Failover Clustering feature. Both Liunx corosync+pacemaker and Oracle Grid Infrastructure need to complete the control of cluster resources and resource isolation. WSFC transfers and isolates the resources associated with SQL Server, such as nodes, IP, disk resources, and so on. This article describes the installation of Windows WSFC and prepares you for an AlwaysOn

Copy codeThe Code is as follows:# Coding: UTF-8Import socketImport selectImport timeImport OSImport threading Def ser ():S = socket. socket (socket. AF_INET, socket. SOCK_DGRAM)S. bind ("", 43244 ))While 1:Infds, outfds, errfds = select. select ([s], [], [], 5)If infds:Sms = s. recv (1024)If sms = "alived ":Print "peer is alived"Else:Print "Can't hear peer! "OS. system ("./failover. sh ") Def clt ():While 1:Sock = socket. socket (socket. AF_INET, sock

Oracle Data Guard (iv) Failover 1. check for missing logs in the Standby database. Run the following command to check for missing logs: SQL> select thread #, log_sequence #, high_sequence # from v $ archive_gap; copy the missing log file from the primary database to the log directory specified by the standby database, and run the following command to register it in the standby database: SQL> alter database register physical logfile 'filespec1'; 2. sto

: Filesystem params device = "/dev/drbd0" directory = "/www" fstype = "ext3" Crm (live) configure # colocation WebFS_on_MS_webdrbd inf: WebFS MS_Webdrbd: Master Crm (live) configure # order WebFS_after_MS_Webdrbd inf: MS_Webdrbd: promote WebFS: start Crm (live) configure # verify Crm (live) configure # commit View the running status of resources in the Cluster: Crm status ================ Last updated: Fri Jun 17 06:26:03 2011 Stack: openais Current DC: node-partition with quorum Version: 1.0.11

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Xen-server for single-point failover High Availability (HA)Create a new resource pool (the pool in this place is the server Xen-server pool)650) this.width=650; "height=" src= "http://a3.qpic.cn/psb?/594581eb-e62e-4426-a878-953c87dd5729/* shhfudflmmuj6cyulqkfinqlzgvpdx5erq0qjlcrke!/b/dgybaaaaaaaaek=1kp=1pt=0bo=igfjaaaaaaadae8! su=0202829665tm=1481868000sce=0-12-12rf=2-9 "width=" 289 "style=" margin:0px;padding:0px; border-width:0px;border-style:none;v

MySQL online MM architecture manual failover process bitsCN.com MySQL online MM architecture manual failover process [] Switching from 11 to 10 Online 10 and 11 Management Cat/proc/drbd The normal status is: [Root @ odb-m10 ~] # Cat/proc/drbd Version: 8.3.2 (api: 88/proto: 86-90) GIT-hash: dd7985327f146f33b86d4bff5ca8c94234ce840e build by root@odb-m10.bg.com, 02:05:57 0: cs: Connected ro: Secondary/Primar

If yii fails to connect to memcache under the default configuration, an error is reported. To implement failover, You need to modify the configuration and code. 1. First, modify yii's caching/cmemcache. php. My version is 1.1.7. Find $ Cache-> addserver ($ server-> host, $ server-> port, $ server-> persistent, $ server-> weight, $ server-> timeout, $ server-> status ); Change $ Cache-> addserver ($ Server-> host,$ Server-> port,$ Server-> persistent,$

least 3 node server (English is not good, we can see it)Related documents: http://docs.couchbase.com/admin/admin/Tasks/tasks-nodeFailover.html3, the effect of testing, heheFinally said two, the elder brother spends nearly 3 days to ponder Couchbase's cluster and the failover plan, the middle difficulty, but fortunately did not give up, finally solves the problem.Then the problem came, brother busy to Busy, you reckoned write useful words, give a prai

The Microsoft failover cluster is an effective guarantee for the cost-effective Windows platform. As the number of nodes in the cluster increases and the number of enterprise applications deployed increases, the configuration of cluster applications will take up a lot of maintenance work. Why cannot I configure cluster nodes automatically? Because you didn't think of it! Most of the time I can't do it. I just can't think of it ~! The Microsoft SDK pr

Premise: Load balancing, that is, when the project is accessed, the request is distributed to different servers through the proxy server.WebLogic Failover ConfigurationCreate Weblogic.xml in the project's Web-inf directoryDOCTYPE Weblogic-web-app Public "-//bea Systems, INC.//DTD Web Application 8.1//en" "http://www.bea.com/servers/ Wls810/dtd/weblogic810-web-jar.dtd ">Weblogic-web-app> Session-descriptor> Persistent-store-type>ReplicatedPer

because the NLB service on the ISA1 does not fail, and also assign the customer to it. However, because the external link is disconnected, the customer that the ISA1 serves is no longer connected to the Internet. This, of course, can not effectively realize the fault-tolerant performance in Network Load Balancing. So, what happens when this happens? The answer is simple, when this happens, stop the NLB service on the ISA1 so that NLB considers the NLB service on the ISA1 to be defunct, will c

1 The environment is as follows: 2 Consumption process Refer to Defaultmqpushconsumer consumption process 3 failover performance: 3.1 Message Pull Exception: 2015-08-12 11:47:13,215 [Pullmessageservice] ERROR Rocketmqclient-pullkernelimpl exceptionCom.alibaba.rocketmq.remoting.exception.RemotingConnectException:connect to At Com.alibaba.rocketmq.remoting.netty.NettyRemotingClient.invokeAsync (nettyremotingclient.java:666) ~[classes/: NaAt Com.alibaba

Label:1, the main library is not consistent from the library archive record, as follows:After failover, the bad Old Main library becomes new from the library, but the new archive log records from the library are inconsistent, that is, the archive log list, out of and v$archived_log out of the number, as follows:1.1 Main Library:log list; log mode Archive Mode Automatic archival Enabled Archive destination USE_DB_RECOVERY_FILE_D

source and sink to the Channela1.sources.r1.channels=C1a1.sinks.k1.channel= C1The remaining agents are identical except for the host IP address and other configurations　　agent2-agentn Start commandWhen it comes to flume multi-level start-up, it is recommended to start from data sourceBin/flume-ng agent-c conf-f conf/avro-logger.conf-n a1-dflume.root.logger=info,console　　Agent1 Start commandBin/flume-ng agent-c conf-f conf/exec-avro.conf-n agent1-dflume.root.logger=info,console　　Writing scripts

NFS storage for ESX typically configures backup links. Automatically switch to the backup link when the primary link fails, which is called failover. Q: When will the failover be launched? A: When a storage link fails to be found. Q: How can I tell if a storage link is interrupted? A: I can't find my heartbeat. Q: What happened to the heartbeat? How can I find a heartbeat? A: Normally the ESX host initi

Background: Corporate DHCP server for security, generally at least 2 DHCP server, 1 fault another can work properly. However, 2 DHCP server How to assign the address is a problem, under normal circumstances, DHCP server receives a DHCP request, will send an offer message. Client accepts the first offer message, which may result in an intranet IP address conflict, etc.Workaround:DHCP failover RFC2131 Standard (finally RFC ~......~)Main principle:1, Mas

the LIUJB-NODE002 node. The Hyper-V cluster is configured successfully.If the virtual machines created from Hyper-V are not cluster-aware, we need to add the virtual machines created in Hyper-V to the cluster through Cluster Administrator, such as:650) this.width=650; "height=" 311 "title=" image "style=" Border:0px;padding-top:0px;padding-right:0px;padding-left : 0px;background-image:none; "alt=" image "src=" http://s3.51cto.com/wyfs02/M02/83/2A/ Wkiol1dsfvxapt5uaaex4rdhc7g144.png "border=" 0

Failed to write file data on cluster disk 0 partition 1, failure reason:the disk structure is corrupted and unreadable.The reason for the failure is that the disk structure is damaged and unreadable.The shared disk of this link is to continue to use the disk that was previously configured, it seems that the disk is out of the question, when the mount is prompted I want to fix it. InList potential Cluster disks where to find disk 0 the corresponding drive ID is b1992ec5then find the corresponding

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