db2 high availability

Tags: mysql keepalived high availability mmm mysql-mmmFirst, the structure diagram650) this.width=650; "src=" Http://s5.51cto.com/wyfs02/M01/88/94/wKioL1f8hR7TQBtMAAJkY1jLHuc617.jpg "title=" Mmm.jpg "alt=" Wkiol1f8hr7tqbtmaajky1jlhuc617.jpg "/>Second, the configuration stepsRequired Software Mysql-5.6.20 mysql-mmm-agent-2.2.1 mysql-mmm-2.2.1 mysql-mmm-monitor-2.2.1 keepalived-1.2.13

/local/mha/mha.conf View MHA[Email protected] ~]# Masterha_check_status--conf=/usr/local/mha/mha.confMHA (pid:2686) is running (0:PING_OK), master:192.168.1.2650) this.width=650; "title=" qq20150108183928.jpg "alt=" wkiol1suehgwwik5aapp_yskcte055.jpg "src="/HTTP/ S3.51cto.com/wyfs02/m01/58/52/wkiol1suehgwwik5aapp_yskcte055.jpg "/>Stop MHA[Email protected] ~]# masterha_stop--conf=/usr/local/mha/mha.confVerify MHA:[Email protected] ~]# IP a #现在有VIP[[Email protected] ~]# service mysqld stop #mysql停

http://freeloda.blog.51cto.com/2033581/1280962 Original works, allow reprint, reprint, please be sure to hyperlink form to indicate the original source of the article, author information and this statement. Otherwise, legal liability will be held. http://freeloda.blog.51cto.com/2033581/1280962 Outline First, the preface Second, keepalived detailed Iii. Environmental Preparedness Four, lvs+keepalived realize the high

>> High-availability clustering solutions Ha (high availability) refers to increasing the availability of systems and applications by minimizing downtime due to routine maintenance operations (planning) and sudden system crashes (unplanned). The

1.1 NetScalerHigh Availability Overviewwe know that in high availability environments, it is common to need 2 devices of the same model to complete the construction of a high-availability environment. The construction of a high

regions and availability zones Capacity design planning, equipment procurement, etc. face challenges Elasticity: No need for detailed planning 2.2 What can cause a system outage?Including:-Artificial (more than 60% reasons)-Crash stop-Equipment failure-Natural disasters-Safety incidents- ...Typical man-made accidents: (although there is a A-b backup mechanism) someone with root permission to delete the file permissions

Mysql-mmm-monitorDB Node InstallationYum-y Install Mysql-mmm-agentDB node authorizes monitor accessGRANT replicationclient on * * to ' mmm_monitor ' @ ' 192.168.1.% ' identified by ' 123456 '; GRANT super,replication CLIENT, PROCESS on *. * to ' mmm_agent ' @ ' 192.168.1.% ' identified by ' 123456 ';mmm_common.conf file (same as five)Active_master_role writerDB End Mmm_agent.confInclude Mmm_common.confthis db1 #分别修改为本机的主机名, i.e. DB1, DB2, DB3

192.168.1.181, 192.168.1.182, 192.168.1.183, 192.168.1.184, 192.168.1.185, 192.168.1.86, 192.168.1.87, 192.168.1.88, 192.168.1.89 #Description: Default mode of Monitor.Mode active Auto_set_online 10 Monitor_user Mmm_monitorMonitor_password 9*[email protected] Debug 0 Vim/etc/mysql-mmm/mmm_common.conf Content Active_master_role writerCluster_interface eno16777984 Pid_path/var/run/mmm_agentd.pidbin_path/usr/lib/mysql-mmm/ Replication_user replicationReplication_password 9*[email protected] Agent_

OutlineDefinition of a highly available clusterIi. metrics for high-availability clustersIII. hierarchical structure of highly available clustersIv. classification of high-availability clustersFive, high-availability cluster commo

High-availability network system design for data centers The data center has many fault types, but the results are similar. That is, the device, link, or server in the data center fails and cannot provide normal services externally. The simplest way to mitigate these problems is Redundancy Design. By providing backups to devices, links, and servers, you can minimize the impact of faults on your business. H

What is high availability? Many companies provide 24 hours * 365 days of uninterrupted services. For example, CallCenter. This requires high availability. For example, a shopping website can be traded at any time. When the shopping network server fails, it cannot have any impact on the business. This is

server to the server farm, all of which are done automatically, without the need for manual intervention, and the only thing that needs to be done manually is to repair the failed Web server.Similar HA tools are heatbeat, DRBD, etc., Heatbeat, DRBD configuration are more complex.Keepalived Theory Working principleKeepalived can provide VRRP and Health-check functions, can only use it to provide dual-machine floating VIP (VRRP virtual routing function), which can easily realize a dual-machine ho

Tags: get mysq character 51cto iad ext permission program logIntroducedMMM (Master-master Replication Manager for MySQL) is a set of scripting programs that support dual-master failover and dual-master daily management. MMM is developed using the Perl language and is primarily used to monitor and manage MySQL Master-master (dual master) replication, which can be said to be the Master Master Replication Manager for MySQL. Although it is called double-master replication, but only one master is all

Every time we talk about the high availability of SQL Server, many DBAs, especially SQL Server DBAs, feel a pain: Because we all think that SQL Server cannot or is difficult to implement SQL Server. There are also a lot of DBA friends with a head shot, giving the answer "isn't high availability the technology of Micros

The database high-availability architecture is a strange field for those of us who develop applications. It is an environment built on a specific database product, you need to have enough knowledge of database products like DBA to get involved. Although you cannot go deep into it, you can learn the ideas through some classic high-

Every time you talk about the high availability of SQL Server, a lot of DBAs, especially SQL Server DBA, have a pain in their head: Because everyone thinks that SQL Server cannot or will be difficult to implement SQL Server. There are also a lot of DBA friends head a beat, give the answer "high availability is not Micr