环境 ：两台服务器版本：centos7（64）
IP分配：192.168.1.204（主 web1） 192.168.1.205（备份 web2） 192.168.1.206（VIP）
需要的rpm包安装：http://download.opensuse.org/repositories/network:/ha-clustering:/Stable/CentOS_CentOS-7/x86_64/
关闭防火墙：
vi /etc/selinux/config
SELINUX=disable
关闭selinux：
systemctl stop firewalld
systemctl disable firewalld
web1服务器环境配置：
yum install "python*" corosync* pacemaker* rsync -y
rpm -ivh crmsh-2.1.4-1.1.x86_64.rpm
配置时间同步：
yum install ntpdate ntp -y
rm -fr /etc/localtime
ln -s /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
vi /etc/ntp.conf （server cn.pool.ntp.org）添加中国时间
# Please consider joining the pool (http://www.pool.ntp.org/join.html).
server cn.pool.ntp.org
ntpdate -d cn.pool.ntp.org 检查差异时间
ntpdate cn.pool.ntp.org 同步时间
vi /etc/sysconfig/ntpd：SYNC_HWCLOCK=yes 添加硬件时钟
chkconfig --levels 235 ntpd on
systemctl restart ntpd
设置本地解析：
192.168.1.204 web1
192.168.1.205 web2
ssh设置互信：
ssh-keygen -t rsa
将生成id_rsa.pub互传对方/root/.ssh/更名为：authorized_keys
修改corosync.conf：
[root@web1 tools]# cat /etc/corosync/corosync.conf
compatibility: whitetank
totem {
version: 2
token: 3000
token_retransmits_before_loss_const: 10
join: 60
consensus: 3600
vsftype: none
max_messages: 20
clear_node_high_bit: yes
rrp_mode: none
secauth: on
threads: 2
interface {
ringnumber: 0
bindnetaddr: 192.168.1.0
mcastaddr: 239.32.12.5
mcastport: 5405
}
}
logging {
fileline: off
to_stderr: yes
to_logfile: yes
to_syslog: no
logfile: /var/log/cluster/corosync.log
syslog_facility: daemon
debug: off
timestamp: on
logger_subsys {
subsys: AMF
debug: off
tags: enter|leave|trace1|trace2|trace3|trace4|trace6
}
}
amf {
mode: disabled
}
aisexec {
user: root
group: root
}
quorum {
provider: corosync_votequorum
expected_votes: 2
two_node: 1
}
mv /dev/{random,random.bak}
ln -s /dev/urandom /dev/random
corosync-keygen
scp -p authkey corosync.conf [email protected]:/etc/corosync 将web1文件传送至web2
启动corosync：
ssh web2 "systemctl start corosync "
systemctl start corosync
启动pacemaker
systemctl start pacemaker
出现 错误：
Last updated: Mon May 4 14:43:13 2015
Last change: Mon May 4 14:26:45 2015
Current DC: NONE
0 Nodes configured
0 Resources configured 增加在corosync文件底部即可：
quorum {
provider: corosync_votequorum
expected_votes: 2
two_node: 1
}
crm操作：
crm(live)configure# property stonith-enabled=false
crm(live)configure# property no-quorum-policy=ignore
crm(live)configure# primitive vip ocf:heartbeat:IPaddr params ip=192.168.1.206
crm(live)configure# commit
2: eth0:
link/ether 00:0c:29:69:ab:ad brd ff:ff:ff:ff:ff:ff
inet 192.168.1.204/24 brd 192.168.1.255 scope global eth0
valid_lft forever preferred_lft forever
inet 192.168.1.206/24 brd 192.168.1.255 scope global secondary eth0
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fe69:abad/64 scope link
如果出现脑裂，vip无法跳转，重启双机corosync/pacemaker服务
关于pacemaker服务资源调度：
强行停止服务kill掉服务，不会自动重启;因为，节点没有故障，所有资源不会转移，默认情况下，pacemaker不会对任何资源进行监控,所以，即便是资源关掉了，只要节点没有故障，资源依然不会转移;要想达到资源转移的目的，得定义监控(monitoer);http://www.it165.net/admin/html/201405/3066.html