[TD-LINUX] Cent / Redhat 7OS(LINUX) PCS CLUSTER LINUX

Cent / Redhat 7OS(LINUX) PCS CLUSTER LINUX 

Enviroments

1. OS:

   Version : Cent OS 7.3

        # Private (heartbeat)

           Svr1 : 192.168.56.120 (node1)

           Svr2 : 192.168.56.121 (node2)

           Disk :  Shared storage  : /dev/sdb1

           Vip : 192.168.56.200

2. LOG  location

         /var/log/cluster/corosync.log

         /var/log/pcsd/pcsd.log

        /var/log/pacemaker.log

Step #1 : install High Availability Cluster on both node (package)

[root@maria yum.repos.d]# yum install -y pacemaker pcs fence-agents-all

Step# 2 : Firewall service stop and disable (node1, node2)

[root@svr1 ~]# service firewall stop

Redirecting to /bin/systemctl stop firewall.service

[root@svr1 ~]# chkconfig firewalld off

Step# 3 : Configure High Availability Cluster (node1, node 2)

[root@svr2 ~]# echo "redhat" | passwd --stdin hacluster

Changing password for user hacluster.

passwd: all authentication tokens updated successfully.

[root@svr2 ~]# systemctl start pcsd

[root@svr2 ~]# systemctl enable pcsd

Created symlink from /etc/systemd/system/multi-user.target.wants/pcsd.service to /usr/lib/systemd/system/pcsd.service.

[root@svr2 ~]# oot@svr2 ~]# systemctl start pcsd

[root@svr2 ~]# systemctl enable pcsd

[root@svr1 ~]# pcs cluster auth svr1 svr2 -u hacluster

Password:

svr1: Authorized

svr2: Authorized

[root@svr1 ~]#

[root@svr1 ~]# pcs cluster setup --name mycluster svr1 svr2

Destroying cluster on nodes: svr1, svr2...

svr2: Stopping Cluster (pacemaker)...

svr1: Stopping Cluster (pacemaker)...

svr1: Successfully destroyed cluster

svr2: Successfully destroyed cluster

Sending 'pacemaker_remote authkey' to 'svr1', 'svr2'

svr2: successful distribution of the file 'pacemaker_remote authkey'

svr1: successful distribution of the file 'pacemaker_remote authkey'

Sending cluster config files to the nodes...

svr1: Succeeded

svr2: Succeeded

Synchronizing pcsd certificates on nodes svr1, svr2...

svr1: Success

svr2: Success

Restarting pcsd on the nodes in order to reload the certificates...

svr1: Success

svr2: Success

[root@svr1 ~]# pcs status

Cluster name: mycluster

WARNING: no stonith devices and stonith-enabled is not false

Stack: corosync

Current DC: svr1 (version 1.1.16-12.el7_4.2-94ff4df) - partition WITHOUT quorum

Last updated: Sun Oct 22 12:03:00 2017

Last change: Sun Oct 22 12:02:23 2017 by hacluster via crmd on svr1

2 nodes configured

0 resources configured

Online: [ svr1, svr2 ]

No resources

Daemon Status:

  corosync: active/enabled

  pacemaker: active/enabled

  pcsd: active/enabled

[root@svr1 ~]#

Step #4 : Create resource for the service High Availability

1. Virtual IP resource

[root@svr1 ~]# pcs resource create VirtIP IPAddr ip=192.168.56.200 cidr_netmask=24 op monitor interval=30s

[root@svr1 ~]# pcs property set stonith-enabled=false

[root@svr1 ~]# pcs property set no-quorum-policy=ignore

[root@svr1 ~]# pcs property set default-resource-stickiness="INFINITY"

 

2. Share Disk resource

[root@svr1 ~]# pcs resource create fs_dmz_kobis Filesystem device="/dev/sdb1" directory="/var/www/html" fstype="xfs" --group sharedDisk_group

Step #5 : WEB Login ( https://IP:2224)

ID: hacluster

Passwd : redhat

Commad :

1. Contifure remove :

           root # pcs cluster stop –all 

           root # pcs cluster destroy --all