1. 环境介绍
我这里弄了2个虚拟机，信息如下：
node1:192.168.168.201
node2:192.168.168.202
2.配置主机名
[root@node1 ~]# vim /etc/sysconfig/network #编辑节点1主机名配置文件 #编辑 HOSTNAME=node1.linuxpanda.com [root@node1 ~]# hostname node1.linuxpanda.com #主机名立即生效 [root@node2 ~]# vim /etc/sysconfig/network #编辑节点2主机名配置文件 #编辑 HOSTNAME=node2.linuxpanda.com [root@node2 ~]# hostname node2.linuxpanda.com #主机名立即生效
2.主机互信
具体可以参见我的上一篇博客：http://www.cnblogs.com/zhaojiedi1992/p/zhaojiedi_linux_023_sshgenkey.html
[root@node1 ~]# ssh-keygen -t rsa -P '' -f ~/.ssh/id_rsa #生成rsa [root@node1 ~]# ssh-copy-id -i ~/.ssh/id_rsa.pub root@192.168.168.202 #复制公钥 [root@node2 ~]# ssh-keygen -t rsa -P '' -f ~/.ssh/id_rsa #生成rsa [root@node2 ~]# ssh-copy-id -i ~/.ssh/id_rsa.pub root@192.168.168.201 #复制公钥
[root@node1 ~]# ssh 192.168.168.202 'ip addr show dev eth0 ' #测试node1 ssh node2
[root@node2 ~]# ssh 192.168.168.201 'ip addr show dev eth0 ' #测试node2 ssh node1
3.host文件配置
host配置文件配置主要用于名称解析， 我们不建议使用dns解析，否则dns无法解析就会导致集群服务的崩溃。
[root@node1 ~]# vim /etc/hosts #添加如下2行 192.168.168.201 node1.linuxpanda.com node1 192.168.168.202 node2.linuxpanda.com node2
[root@node1 ~]# scp /etc/hosts root@node2:/etc/hosts #host文件复制一份到node2中去
[root@node1 ~]# ping node2 -c 1 #node1 ping node2
[root@node2 ~]# ping node1 -c 1 #node2 ping node1
4.防火墙和selinux设置
[root@node1 ~]# service iptables stop #关闭node防火墙 iptables: Flushing firewall rules: [ OK ] iptables: Setting chains to policy ACCEPT: filter [ OK ] iptables: Unloading modules: [ OK ] [root@node1 ~]# ssh node2 'service iptables stop' #关闭node2防火墙 iptables: Flushing firewall rules: [ OK ] iptables: Setting chains to policy ACCEPT: filter [ OK ] iptables: Unloading modules: [ OK ]
[root@node1 ~]# sed -i '/SELINUX/s/enforcing/disabled/' /etc/selinux/config #修改node1selinux设置 [root@node1 ~]# setenforce 0 #立马生效 [root@node1 ~]# ssh node2 "sed -i '/SELINUX/s/enforcing/disabled/' #修改node1selinux设置 [root@node1 ~]# ssh node2 " setenforce 0' #立马生效
5.时间同步
具体参见我的另一篇博客：http://www.cnblogs.com/zhaojiedi1992/p/zhaojiedi_linux_022_ntp.html
6.安装heartbeat
[root@node1 ~]# yum install heartbeat heartbeat-devel heartbeat-lib
[root@node2 ~]# ssh node2 'yum install heartbeat heartbeat-devel heartbeat-lib'
7.编辑配置文件
[root@node1 ha.d]# cd /etc/ha.d/ [root@node1 ha.d]# cp /usr/share/doc/heartbeat-3.0.4/{authkeys,ha.cf,haresources} -p . [root@node1 ha.d]# vim authkeys #添加以下两行 auth 1 1 md5 oracle
[root@node1 ha.d]# mv ha.cf ha.cf.bak [root@node1 ha.d]# vim ha.cf #添加如下行 logfile /var/log/ha-log
keepalive 2
deadtime 30
warntime 10
initdead 120
bcast eth0 # Linux
auto_failback on
node node1.linuxpanda.com
node node2.linuxpanda.com
ping 192.168.168.1
[root@node1 ha.d]# vim haresources #添加如下行 node1.linuxpanda.com IPaddr::192.168.168.200/24/eth0 httpd
[root@node1 ha.d]# scp -p authkeys haresources ha.cf node2:/etc/ha.d/
8.安装httpd服务
[root@node1 ha.d]# yum install httpd [root@node1 ha.d]# service httpd start Starting httpd: [ OK ] [root@node1 ha.d]# echo "node1" > /var/www/html/index.html [root@node1 ha.d]# elinks node1 -source [root@node2 ha.d]# yum install httpd [root@node2 ha.d]# service httpd start Starting httpd: [ OK ] [root@node2 ha.d]# echo "node2" > /var/www/html/index.html [root@node2 ha.d]# elinks node2 -source
[root@node1 ha.d]# for i in {1..2};do ssh node$i 'service httpd stop';ssh node$i 'chkconfig httpd off' ; done;
9.启动heartbeat
[root@node1 ha.d]# for i in {1..2} ; do ssh node$i 'service heartbeat start' ; done;
10.测试
我们使用宿主机测试下：
[root@node1 ha.d]# ip addr show dev eth0 #确认node1的ip信息，发现200ip资源在node1上分配的。 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 00:0c:29:c9:20:88 brd ff:ff:ff:ff:ff:ff inet 192.168.168.201/24 brd 192.168.168.255 scope global eth0 inet 192.168.168.200/24 brd 192.168.168.255 scope global secondary eth0 inet6 fe80::20c:29ff:fec9:2088/64 scope link valid_lft forever preferred_lft forever
[root@node2 ha.d]# ip addr show dev eth0 #查看node2的ip信息
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:50:56:3f:42:13 brd ff:ff:ff:ff:ff:ff
inet 192.168.168.202/24 brd 192.168.168.255 scope global eth0
inet6 fe80::250:56ff:fe3f:4213/64 scope link
valid_lft forever preferred_lft forever
我们使用hb_standby脚本将node1转为standby，当然也是可以断点处理。
[root@node1 heartbeat]# /usr/share/heartbeat/hb_standby
Going standby [all].
查看日志信息：
[root@node1 heartbeat]# tail -20 /var/log/ha-log May 11 12:39:45 node1.linuxpanda.com heartbeat: [8508]: info: node1.linuxpanda.com wants to go standby [all] May 11 12:39:46 node1.linuxpanda.com heartbeat: [8508]: info: standby: node2.linuxpanda.com can take our all resources May 11 12:39:46 node1.linuxpanda.com heartbeat: [9129]: info: give up all HA resources (standby). ResourceManager(default)[9142]: 2017/05/11_12:39:46 info: Releasing resource group: node1.linuxpanda.com IPaddr::192.168.168.200/24/eth0 httpd ResourceManager(default)[9142]: 2017/05/11_12:39:46 info: Running /etc/init.d/httpd stop ResourceManager(default)[9142]: 2017/05/11_12:39:46 info: Running /etc/ha.d/resource.d/IPaddr 192.168.168.200/24/eth0 stop IPaddr(IPaddr_192.168.168.200)[9222]: 2017/05/11_12:39:46 INFO: IP status = ok, IP_CIP= /usr/lib/ocf/resource.d//heartbeat/IPaddr(IPaddr_192.168.168.200)[9196]: 2017/05/11_12:39:46 INFO: Success May 11 12:39:46 node1.linuxpanda.com heartbeat: [9129]: info: all HA resource release completed (standby). May 11 12:39:46 node1.linuxpanda.com heartbeat: [8508]: info: Local standby process completed [all]. May 11 12:39:47 node1.linuxpanda.com heartbeat: [8508]: WARN: 1 lost packet(s) for [node2.linuxpanda.com] [2213:2215] May 11 12:39:47 node1.linuxpanda.com heartbeat: [8508]: info: remote resource transition completed. May 11 12:39:47 node1.linuxpanda.com heartbeat: [8508]: info: No pkts missing from node2.linuxpanda.com! May 11 12:39:47 node1.linuxpanda.com heartbeat: [8508]: info: Other node completed standby takeover of all resources.
测试成功。