配置环境
Node1:192.168.1.131 CentOS7.2
Node2:192.168.1.132 CentOS7.2
配置前准备
[[email protected] ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.1.131 node1
192.168.1.132 node2
[[email protected] ~]# ssh-keygen -t rsa -P ‘‘
[[email protected] ~]# ssh-copy-id -i ~/.ssh/id_rsa.pub node1
[[email protected] ~]# ssh-copy-id -i ~/.ssh/id_rsa.pub node2
[[email protected] ~]# yum -y install ansible
[[email protected] ~]# vim /etc/ansible/hosts
[ha]
192.168.1.131
192.168.1.132
Node1和Node2
# yum -y install pcs
[[email protected] ~]# ansible ha -m service -a ‘name=pcsd state=started enabled=yes‘
[[email protected] ~]# ansible ha -m shell -a ‘echo "mageedu" | passwd --stdin hacluster‘
[[email protected] ~]# pcs cluster auth node1 node2 -u hacluster
Password:
node1: Already authorized
node2: Already authorized
[[email protected] ~]# pcs cluster auth node1 node2 -u hacluster
Password:
node1: Already authorized
node2: Already authorized
[[email protected] ~]# pcs cluster setup --name mycluster node1 node2
Shutting down pacemaker/corosync services...
Redirecting to /bin/systemctl stop pacemaker.service
Redirecting to /bin/systemctl stop corosync.service
Killing any remaining services...
Removing all cluster configuration files...
node1: Succeeded
node2: Succeeded
Synchronizing pcsd certificates on nodes node1, node2...
node1: Success
node2: Success
Restaring pcsd on the nodes in order to reload the certificates...
node1: Success
node2: Success
[[email protected] ~]# cd /etc/corosync/
[[email protected] corosync]# vim corosync.conf
修改loggin值为
logging {
to_logfile: yes
logfile: /var/log/cluster/corosync.log
}
[[email protected] corosync]# scp corosync.conf node2:/etc/corosync/
启动集群：
[[email protected] corosync]# pcs cluster start --all
node2: Starting Cluster...
node1: Starting Cluster...
检查各节点通信状态（显示为no faults即为OK）;
[[email protected] corosync]# corosync-cfgtool -s
Printing ring status.
Local node ID 1
RING ID 0
id = 192.168.1.131
status = ring 0 active with no faults
检查集群成员关系及Quorum API
[[email protected] corosync]# corosync-cmapctl | grep members
runtime.totem.pg.mrp.srp.members.1.config_version (u64) = 0
runtime.totem.pg.mrp.srp.members.1.ip (str) = r(0) ip(192.168.1.131)
runtime.totem.pg.mrp.srp.members.1.join_count (u32) = 1
runtime.totem.pg.mrp.srp.members.1.status (str) = joined
runtime.totem.pg.mrp.srp.members.2.config_version (u64) = 0
runtime.totem.pg.mrp.srp.members.2.ip (str) = r(0) ip(192.168.1.132)
runtime.totem.pg.mrp.srp.members.2.join_count (u32) = 1
runtime.totem.pg.mrp.srp.members.2.status (str) = joined
查看集群状态：
[[email protected] corosync]# pcs status
检查集群错误：
[[email protected] corosync]# crm_verify -L -V
error: unpack_resources: Resource start-up disabled since no STONITH resources have been defined
error: unpack_resources: Either configure some or disable STONITH with the stonith-enabled option
error: unpack_resources: NOTE: Clusters with shared data need STONITH to ensure data integrity
Errors found during check: config not valid
处理：
[[email protected] corosync]# pcs property set stonith-enabled=false
[[email protected] corosync]# crm_verify -L -V
[[email protected] corosync]# pcs property list
Cluster Properties:
cluster-infrastructure: corosync
cluster-name: mycluster
dc-version: 1.1.13-10.el7_2.4-44eb2dd
have-watchdog: false
stonith-enabled: false
[[email protected] ~]# ls
anaconda-ks.cfg Pictures
crmsh-2.1.4-1.1.x86_64.rpm pssh-2.3.1-4.2.x86_64.rpm
Desktop Public
Documents python-pssh-2.3.1-4.2.x86_64.rpm
Downloads Templates
Music Videos
[[email protected] ~]# yum install *rpm
[[email protected] ~]# scp *rpm node2:/root
[[email protected] ~]# yum install *rpm -y
显示集群状态：
[[email protected] ~]# crm status
Last updated: Wed Sep 21 17:31:26 2016 Last change: Wed Sep 21 17:16:32 2016 by root via cibadmin on node1
Stack: corosync
Current DC: node1 (version 1.1.13-10.el7_2.4-44eb2dd) - partition with quorum
2 nodes and 0 resources configured
Online: [ node1 node2 ]
[[email protected] ~]# yum -y install httpd
[[email protected] ~]# echo "<h1>Node1.magedu.com</h1>" > /var/www/html/index.html
[[email protected] ~]# systemctl start httpd.service
[[email protected] ~]# systemctl enable httpd.service
[[email protected] ~]# yum -y install httpd
[[email protected] ~]# echo "<h1>Node2.magedu.com</h1>" > /var/www/html/index.html
[[email protected] ~]# systemctl start httpd.service
[[email protected] ~]# systemctl enable httpd.service
[[email protected] ~]# crm ra
crm(live)ra# cd
crm(live)# configure
crm(live)configure# primitive webip ocf:heartbeat:IPaddr params ip=192.168.1.80