HA heartbeat + drbd 配置学习笔记

Posted 2020-08-09

heartbeat安装软件

heartbeat-3.0.4-2.el6.x86_64.rpm
heartbeat-devel-3.0.4-2.el6.x86_64.rpm
heartbeat-libs-3.0.4-2.el6.x86_64.rpm
ldirectord-3.9.5-3.1.x86_64.rpm

/usr/share/doc/
        ha.cf           Main configuration file
        haresources     Resource configuration file
        authkeys        Authentication information
cp ha.cf harsources authkeys  /etc/ha.d

配置 /etc/ha.d/ha.cf
 29 logfile /var/log/ha-log
 48 keepalive 2
 61 warntime 10
 71 initdead 60
 76 udpport 6970
 91 bcast   eth0            # Linux
 157 auto_failback on
 211 node    server26.example.com
 212 node    server27.example.com
 220 ping 172.25.28.250  
 253 respawn hacluster /usr/lib64/heartbeat/ipfail
 259 apiauth ipfail gid=haclient uid=hacluster


配置/etc/ha.d/haresources
 
server26.example.com IPaddr::172.25.28.70/24/eth0    drbddisk::test Filesystem::/dev/drbd1::/var/lib/mysql mysqld    虚拟ip#  172.25.28.70


配置 /etc/ha.d/authkeys
 23 auth 1
 24 1 crc
 
chmod 600 authkeys


/etc/init.d/heatbeat start

---------------------------------------------------------------分割线----------------------------------------------------


drbd 同步存储
安装包
yum install -y drbd-pacemaker drbd-udev

编辑 *.res
vim /etc/drbd.d/bddata.res

  1 resource test {
  2         meta-disk internal;
  3         device /dev/drbd1;
  4         syncer {
  5         verify-alg sha1;
  6         }
  7         on server26.example.com {   #主机名
  8         disk /dev/vdb;              #同步所需的主机磁盘
  9         address 172.25.28.26:7789;  #主机ip
 10         }
 11         on server27.example.com {
 12         disk /dev/vdb;
 13         address 172.25.28.27:7789;
 14         }
 15 }

两台主机  同步磁盘
drbdadm create-md test

开启服务
/etc/init.d/drbd start

设置主磁盘
drbdadm primary test --force
之后相互开始同步磁盘  
version: 8.4.3 (api:1/proto:86-101)
GIT-hash: 89a294209144b68adb3ee85a73221f964d3ee515 build by [email protected], 2016-09-21 16:46:03

 1: cs:SyncSource ro:Primary/Secondary ds:UpToDate/Inconsistent C r-----
    ns:132096 nr:0 dw:0 dr:132760 al:0 bm:8 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:4062044
    [>....................] sync‘ed:  3.3% (4062044/4194140)K
    finish: 0:01:01 speed: 66,048 (66,048) K/sec



配置 /etc/ha.d/haresources
server26.example.com IPaddr::172.25.28.70/24/eth0  drbddisk::test Filesystem::/dev/drbd1::/var/lib/mysql mysqld   调用脚本挂载/dev/drbd1 到/var/lib/mysql 启动 mysql 服务


mysql 启动时
ERROR 2002 (HY000): Can‘t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock‘ (2)
原因是，/var/lib/mysql 的访问权限问题
chown -R mysql:mysql /var/lib/mysql