pacemaker documentation

Lab Environment: Two hosts: centos6.5+httpd2.4+php5.5 the basic environment that makes up the web, and the Web page is accessed properly, and ensures that the HTTPD24 service does not boot up. Node1.mylinux.com 10.204.80.79 Node2.mylinux.com 10.204.80.80 I am here to enable ansible to facilitate the management of two nodes, enable a host as a management node, ip:10.204.80.71, in the hosts of the three hosts to add the corresponding name resolution, management node to node1,node2 two nodes enable

Corosync detailedOpenais OverviewOpenais is an application interface specification for the SA Forum-based cluster framework. Openais provides a cluster mode, which includes cluster framework, cluster member management, communication mode, cluster monitoring and so on, can provide cluster interface for cluster Software or tool to meet AIS standard, but it does not have cluster resource management function and cannot form a cluster independently. Openais components, including Amf,clm,ckpt,evt,lck,

Corosync + Pacemaker build highly available Clusters I. Overview:1.1 Introduction to AIS and OpenAISAIS application interface specification is a set of open specifications used to define application interface (API). These applications provide an open and highly portable application interface for application services as middleware. It is urgently needed to implement high-availability applications. The Service Availability Forum (SA Forum) is an open Fo

specific service.Messing layer and CRM combination methods:Heartbeat v1 (Haresource): Self is independent and complete;Heartbeat v2 (CRM): Self is independent and complete;Corosync + pacemaker (manual combination): where Corosync has 2 versions;Corosync v1 + pacemaker (plugin): no independent voting system, pacemaker run as a plug-in;Corosync V2 +

First, the concept of pacemaker(1) Pacemaker (pacemaker), is a highly available cluster resource manager. It achieves maximum availability of resource management for node and resource level fault detection and recovery by using the message and member capabilities provided by the preferred cluster infrastructure (Corosync or heartbeat). It monitors and recovers no

[Root@host1 mysql]# MySQL9. Uninstall DRBD file System at node Node1[Root@node1 ~]# UMOUNT/VAR/LIB/MYSQL_DRBD[Root@node1 ~]# Drbdadm Secondary DbclusterMount the DRBD File system node Node2[Root@node2 ~]# Drbdadm Primary Dbcluster[Root@node2 ~]# mount/dev/drbd0/mysql/Configure MySQL on node Node2 and test[Root@node1 ~]# SCP node2:/etc/my.cnf/etc/my.cnf[Root@node2 ~]# chown mysql/etc/my.cnf[Root@node2 ~]# chmod 644/etc/my.cnfMySQL login test on Node2[Root@node2 ~]# MySQL11. Uninstall the DRBD fil

Linux Corosync + Pacemaker Complete HA structure: Install and configure a high-availability cluster:1. node name: the names of each node in the cluster must be resolved to each other./Etc/hostsIn hosts, the forward and reverse resolution results of the host name must be consistent with those of "uname-n;2. Time must be synchronizedUse Network Time Server synchronization time3. Not required: each node can communicate with each other through ssh key au

The version of the Pacemaker cluster configuration. About the version of the Pacemaker cluster configuration, CIB in Pacemaker has a version composed of admin_epoch, epoch, and num_updates. when a node is added to the cluster, the version number is used, obtain the version of the Pacemaker cluster. In

one of the platforms:1. Set into primary:DRBDADM----Overwrite-data-of-peer primary drbdweb2. Format and MountMkfs.ext4/dev/drbd0Mkdir/drbdMount/dev/drbd0/drbd3. Create a file, uninstall it, and set it to secondaryTouch/drbd/somethingUmount/drbdDrbdadm Secondary DrbdwebUpgrade to primary on another platform to mount and see if there are any files that you just created:DRBDADM Primary DrbdwebDrbd-overviewMkdir/drbdMount/dev/drbd0/drbdLs/drbdAt this point, the DRBD experiment has been completed.He

) = joinedRuntime.totem.pg.mrp.srp.members.167772173.config_version (U64) = 0Runtime.totem.pg.mrp.srp.members.167772173.ip (str) = R (0) IP (10.0.0.13)Runtime.totem.pg.mrp.srp.members.167772173.join_count (U32) = 2Runtime.totem.pg.mrp.srp.members.167772173.status (str) = joined167772172 is the member ID, its IP is 10.0.0.12, the state is joined;167772173 is the member ID, its IP is 10.0.0.13, the state is joined;Corosync Service status is correct.Start the P