heartbeat双主高可用
一、基础配置
1、hostnamectl set-hostname node1 (node2)
2、[root@node1 ~]# cat /etc/hosts
192.168.40.128 node1
192.168.40.129 node2
3、添加路由
node1# vim /etc/rc.local
/sbin/route add -host 192.168.40.132 dev ens33 (对方)
防火墙和selinux关闭,互相ping通
4、创建用户和组
groupadd haclient
useradd -g haclient hacluster
5、源码安装过程如上一篇主从
6、配置网卡支持插件文件
#mkdir -pv /usr/local/heartbeat/usr/lib/ocf/lib/heartbeat/
#cp /usr/lib/ocf/lib/heartbeat/ocf-* /usr/local/heartbeat/usr/lib/ocf/lib/heartbeat/
#注意:一般启动时会报错因为 ping和ucast这些配置都需要插件支持 需要将lib64下面的插件软连接到lib目录 才不会抛出异常
#ln -svf /usr/local/heartbeat/lib64/heartbeat/plugins/RAExec/* /usr/local/heartbeat/lib/heartbeat/plugins/RAExec/
#ln -svf /usr/local/heartbeat/lib64/heartbeat/plugins/* /usr/local/heartbeat/lib/heartbeat/plugins/
#拷贝三个模版配置文件到 /usr/local/heartbeat/etc/ha.d 目录下
cp /root/Heartbeat-3-0-958e11be8686/doc/{ha.cf,haresources,authkeys} /usr/local/heartbeat/etc/ha.d/
7、#更改权限为600(两个机子都做)
chmod 600 /usr/local/heartbeat/etc/ha.d/authkeys
二、node1机子(具体参数解释自行百度)
[root@node1 ~]# cd /usr/local/heartbeat/etc/ha.d/
[root@node1 ha.d]# cat ha.cf |egrep -v "^#|^$" (-v取反)
debugfile /var/log/ha-debug
logfile /var/log/ha-log
logfacility local1
keepalive 2
deadtime 15
warntime 10
initdead 60
udpport 694
ucast ens33 192.168.40.211 (与node2唯一不同的点)
auto_failback on
node node1
node node2
[root@node1 ha.d]# cat haresources |egrep -v "^#|^$"
node1 IPaddr::192.168.40.222/24/ens33
node2 IPaddr::192.168.40.223/24/ens33
[root@node1 ha.d]# cat authkeys |egrep -v "^#|^$"
auth 1
1 crc
三、node2机子
[root@node2 ~]# cd /usr/local/heartbeat/etc/ha.d/
[root@node2 ha.d]# cat ha.cf |egrep -v "^#|^$"
debugfile /var/log/ha-debug
logfile /var/log/ha-log
logfacility local1
keepalive 2
deadtime 15
warntime 10
initdead 60
udpport 694
ucast ens33 192.168.40.132 (对方心跳线)
auto_failback on
node node1
node node2
[root@node2 ha.d]# cat haresources |egrep -v "^#|^$"
node1 IPaddr::192.168.40.222/24/ens33
node2 IPaddr::192.168.40.223/24/ens33
[root@node2 ha.d]# cat authkeys |egrep -v "^#|^$"
auth 1
1 crc
四、测试结果
[root@node1 ~]# curl http://192.168.40.222
node1
[root@node1 ~]# curl http://192.168.40.223
node2
[root@node1 ~]# /usr/local/heartbeat/share/heartbeat/hb_standby (模拟node1坏掉)
Going standby [all].
[root@node1 ~]# curl http://192.168.40.223
node2
[root@node1 ~]# curl http://192.168.40.222(虚拟ip222转移到node2)
node2
[root@node1 ~]# /usr/local/heartbeat/share/heartbeat/hb_takeover local (虚拟ip回到node1)
[root@node1 ~]# curl http://192.168.40.222
node1
[root@node1 ~]# curl http://192.168.40.223
node2
五、小结
1、之前用一个虚拟ip,haresources配置文件里就一个 node1 IPaddr::192.168.40.222 apache::/etc/httpd/conf/httpd.conf
就一直报错 apache(apache_//usr/sbin/httpd)[1845]: 2019/10/06_23:38:35 INFO: waiting for apache //usr/sbi
apache(apache_//usr/sbin/httpd)[1845]: 2019/10/06_23:38:36 INFO: apache not running 解决办法:如上面的配置
2、另外感觉配置都没错,试试重启虚拟机
3、http起不来
[root@node1 ~]# ss -anpt |grep 80
LISTEN 0 128 :::80 :::* users:(("httpd39,fd=8),("httpd",pid=1538,fd=8),("httpd",pid=1537,fd=8),("httpd",pid=1536,fd=8),("httpd",pid=8))
[root@node1 ~]# kill 1534
[root@node1 ~]# kill 1538
[root@node1 ~]# kill 1536
[root@node1 ~]# ss -anpt |grep 80
[root@node1 ~]# systemctl start httpd