Pacemaker and Corosync to build HA

Reference article: http://www.6tech.org/2013/03/linux-firewall-cluster-with-pacemaker-and-corosync/

System centos6.4-x86_64

The premise is that each node server 1 is configured to build a third-party source, and 2 to build a rsync service.

(third-party source http://download.opensuse.org/repositories/network:/ha-clustering:/Stable/CentOS_CentOS-6/x86_64/)

Install basic software (each node server)

Yum install-y vim git make automake gcc gcc-c++ glibc gd gd-devel glib-devel glibc-headers wget curl tar nc libcurl-devel openssl-devel zlib-devel zlib patch readline readline-devel libffi-devel curl-devel zip rsync ruby rubygems ruby-devel htop mlocate python-dateutil redhat-rpm-config ntp

Modify hosts file to add virtual IP parsing

Vim / etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4::1 localhost localhost.localdomain localhost6 localhost6.localdomain610.0.0.101 vm01-centos10.0.0.102 vm02-centos10.0.0.103 vm03-centos

Install Pacemaker: (Do on all servers)

Yum install-y pacemaker cman ccs corosync pssh crmsh

Add boot boot

Chkconfig pacemaker on

Create Corosync Key: (Only do on the first server)

Corosync-keygen

Set permissions on the key: (Do first server)

Chown root:root / etc/corosync/authkeychmod 400 / etc/corosync/authkey

Copy to another node

Rsync-avh / etc/corosync/authkey root@10.0.0.101:/etc/corosync/authkeyrsync-avh / etc/corosync/authkey root@10.0.0.103:/etc/corosync/authkey

Install a base corosync config: (Do on first server)

Cp / etc/corosync/corosync.conf.example / etc/corosync/corosync.conf