lte failover

Protocols and ports used by Windows Server Failover ClusterThe Windows server Cluster service, the Cluster service, is used to control server cluster operations and to manage the internal flat file database of the cluster. A cluster is a collection of standalone servers that are combined and serve as a separate entity for external service. The cluster that the user sees is a separate system. If a node fails, the other nodes assume the service and data

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After configuring multiple dataservers, you need to consider the single point of failure problem of nameserver. This article will introduce how to implement ha for the nameserver of TFS. It is officially recommended to use heartbeat, but the implementation configuration of heartbeat is much more complicated than keepalive, therefore, keepalive is used to implement ha and Failover of namserver. Environment Introduction: NS Server 1 --> 192.168.1.225 N

Tokyo CabinetIt is a dBm database developed by the Japanese pinglin yixiong. It reads and writes 1 million data records in hash mode in 0.643 seconds and reads 1 million data records in 0.773 seconds, it is several times that of DBM such as Berkeley dB. 　　 Tokyo tyrantIs the network interface of the Tokyo cabinet database developed by the same author. It is compatible with memcached and can exchange data over HTTP. Tokyo tyrant and Tokyo cabinet constitute a distributed persistent storage syste

The role switching between Data guard master and subordinate libraries is divided into the following two kinds: 1) Switchover Swithchover are usually artificial and planned for role swaps, such as upgrades. It is usually lossless, that is, there will be no loss of data. Its implementation is mainly divided into two stages: Primary to standby. Standby (one) to primary 2) Failover Failover means that be

Tags: client technology help root write Ann not http altWhat is a replication set? A replica set (replica sets) is an additional copy of the data that is the process of synchronizing data across multiple servers, which provides redundancy and increases data availability, and enables recovery of hardware failures and outage services through replication sets. Benefits of replication Sets Make your data more secure. High data availability. Disaster recovery. Maint

Oracle DataGuard Study--dataguard failover caseOracle DG (Dataguard) is now a common database ha configuration policy. By implementing physical Standby and logical Standby, the data redundancy tolerance mechanism can be realized. There is no fast backup support environment when there is a major failure in the main library and no support for the service. in Dg switchover and failover dg The core of implem

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