db2 high availability

Experiment Description:This experiment is based on Heartbeat CRM, which realizes high availability to MySQL service, and does not have high available MySQL data.Unfinished: The Specify mount option fails when using Hb_gui to configure Mount NFS.MySQL data and configuration files placed on NFS shared storageThe mysql configuration file is specified using--default-

Label:For space reasons, AlwaysOn availability groups are split into two parts: theoretical and actual. The actual combat component was then disassembled for preparation and the AlwaysOn availability Group was built. Three articles of the respective links: SQL Server->> high Availability and disaster recovery (HADR) te

seconds ######################################################################### Rediscli= "/usr/local/redis/bin/redis-cli" Logfile= "/var/log/keepalived-redis-state.log" Echo-e "[backup]\t$ (Date ' +%f%T ') \nbeing slave ..." >> $LOGFILE 2>1 Sleep #延迟15秒待数据被对方同步完成之后再切换主从角色 echo "Run slaveof cmd ..." >> $LOGFILE $REDISCLI slaveof 172.16.6.100 6379 >> $LOGFILE 2>1 ④, execute permissions for all scripts [root@legion102/etc/keepalived]# chmod +x/etc/keepaliv

Reaffirm again Although I have never found a shortage of issues related to high availability or disaster recovery, the previous issue of WebSphere reverse investors (dealing with WebSphere application Server management High Availability option) suggests that the number of these issues appears to have increased recentl

/wKioL1X24xGAf6CzAAHCazDqLU4392.jpg "title=" 11.png "alt=" Wkiol1x24xgaf6czaahcazdqlu4392.jpg "/>8.12 Click "Close" after successful completion650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/73/2C/wKiom1X24OqyBAoOAAJTxCXDsJ0188.jpg "title=" 12.png "alt=" Wkiom1x24oqybaooaajtxcxdsj0188.jpg "/>8.13 Now you can see that the availability group has been created.650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/73/29/wKioL1X24y2C1_laAAJ9

Without the idea of design, you cannot become an architect. The architect is a good piece of code, drawing a beautiful uml/prototype, wrote a technical document, more to solve the project key technology of the comprehensive talent. Architect = Front-end engineer + back-end Programmer + System Analyst + Key Technology Solutions + various technology collocation + design mode + deployment tuning + other, visible architects are generalists, and play a key role in connection management and project me

, but also want to maximize the business availability of the scene. For businesses that have a high level of conformance to data, it is highly recommended that you use MMM as a highly available architecture.MMM project from Google:http://code.google.com/p/mysql-master-masterThe official website is: http://mysql-mmm.orgBelow we have a practical case to fully understand the internal structure of MMM, as shown

I. Concept INTRODUCTIONHA (High availability) refers to improving system and application availability by minimizing downtime due to routine maintenance operations (planning) and sudden system crashes (unplanned). It differs from the fault-tolerant technology that is considered to be uninterrupted operation. Ha system is the most effective method to prevent the fa

Basic configuration and tuning policies for high-availability and high-performance computer systemsQingdao railway station Computing Center Yu Dong Liu Mei Computer users need such a computing environment: ReliabilityThe performance must be sufficient to handle various loads in complex environments. Users place various applications in computer systems, and the ap

Keepalived, Lvs,tomcat high availability, high concurrency, high-performance application architecture Keepalived, LVS built on the same server, two Tomcat on a tomcat Four server versions: CentOS 6.5 Yum Install Ipvsadm-y Keepalived:etc/keepalived/keepalived.conf ! Configuration File for KeepalivedGlobal_defs {Notifi