RHCS套件实现高可用负载均衡集群（三）——共享存储
2024-05-11 09:55:28
注：此博文在博文“RHCS套件实现高可用负载均衡集群（二）”的基础上完成
实验开始前设置实验环境
target端配置——server3
[root@server3 ~]# yum install -y scsi-*
[root@server3 ~]# vim /etc/tgt/targets.conf 38 <target iqn.2008-09.com.example:server.target1>39 backing-store /dev/vdb40 initiator-address 172.25.54.141 initiator-address 172.25.54.242 </target>[root@server3 ~]# /etc/init.d/tgtd start
Starting SCSI target daemon: [ OK ]
[root@server3 ~]# tgt-admin -s
Target 1: iqn.2008-09.com.example:server.target1System information:Driver: iscsiState: readyI_T nexus information:LUN information:LUN: 0Type: controllerSCSI ID: IET 00010000SCSI SN: beaf10Size: 0 MB, Block size: 1Online: YesRemovable media: NoPrevent removal: NoReadonly: NoBacking store type: nullBacking store path: NoneBacking store flags: LUN: 1Type: diskSCSI ID: IET 00010001SCSI SN: beaf11Size: 21475 MB, Block size: 512Online: YesRemovable media: NoPrevent removal: NoReadonly: NoBacking store type: rdwrBacking store path: /dev/vdbBacking store flags: Account information:ACL information:172.25.54.1172.25.54.2
[root@server3 ~]# initiator端配置——server1、server2
[root@server1 ~]# yum install -y iscsi-*
[root@server2 ~]# yum install -y iscsi-*
server1
[root@server1 ~]# iscsiadm -m discovery -t st -p 172.25.54.3
##发现 iSCSI 设备
Starting iscsid: [ OK ]
172.25.54.3:3260,1 iqn.2008-09.com.example:server.target1
[root@server1 ~]# iscsiadm -m node -l
##登录并导入 iSCSI 设备
Logging in to [iface: default, target: iqn.2008-09.com.example:server.target1, portal: 172.25.54.3,3260] (multiple)
Login to [iface: default, target: iqn.2008-09.com.example:server.target1, portal: 172.25.54.3,3260] successful.
[root@server1 ~]# fdisk -l ##存在 /dev/sda
Disk /dev/sda: 21.5 GB, 21474836480 bytes
64 heads, 32 sectors/track, 20480 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
[root@server1 ~]# /etc/init.d/clvmd status
clvmd (pid 1264) is running...
Clustered Volume Groups: (none)
Active clustered Logical Volumes: (none)
[root@server1 ~]# lvsLV VG Attr LSize Pool Origin Data% Move Log Cpy%Sync Convertlv_root VolGroup -wi-ao---- 18.54g lv_swap VolGroup -wi-ao---- 992.00m
[root@server1 ~]# server2
[root@server2 ~]# iscsiadm -m discovery -t st -p 172.25.54.3
Starting iscsid: [ OK ]
172.25.54.3:3260,1 iqn.2008-09.com.example:server.target1
[root@server2 ~]# iscsiadm -m node -l
Logging in to [iface: default, target: iqn.2008-09.com.example:server.target1, portal: 172.25.54.3,3260] (multiple)
Login to [iface: default, target: iqn.2008-09.com.example:server.target1, portal: 172.25.54.3,3260] successful.
[root@server2 ~]# cat /proc/partitions
major minor #blocks name252 0 20971520 vda252 1 512000 vda1252 2 20458496 vda2253 0 19439616 dm-0253 1 1015808 dm-18 0 20971520 sda
[root@server2 ~]#LVM创建
##server1
[root@server1 ~]# pvcreate /dev/sda Physical volume "/dev/sda" successfully created
[root@server1 ~]# pvsPV VG Fmt Attr PSize PFree /dev/sda clustervg lvm2 a-- 20.00g 16.00g/dev/vda2 VolGroup lvm2 a-- 19.51g 0
[root@server1 ~]###server2
[root@server2 ~]# pvs ##还未同步PV VG Fmt Attr PSize PFree/dev/vda2 VolGroup lvm2 a-- 19.51g 0
[root@server2 ~]# pvs ##已同步PV VG Fmt Attr PSize PFree /dev/sda lvm2 a-- 20.00g 20.00g/dev/vda2 VolGroup lvm2 a-- 19.51g 0
[root@server2 ~]###server1
[root@server1 ~]# vgcreate clustervg /dev/sda Clustered volume group "clustervg" successfully created
[root@server1 ~]# vgsVG #PV #LV #SN Attr VSize VFree VolGroup 1 2 0 wz--n- 19.51g 0 clustervg 1 1 0 wz--nc 20.00g 16.00g
[root@server1 ~]###server2
[root@server2 ~]# vgsVG #PV #LV #SN Attr VSize VFree VolGroup 1 2 0 wz--n- 19.51g 0 clustervg 1 0 0 wz--nc 20.00g 20.00g
[root@server2 ~]###server1
[root@server1 ~]# lvcreate -L 4G -n demo clustervgLogical volume "demo" created
[root@server1 ~]# lvsLV VG Attr LSize Pool Origin Data% Move Log Cpy%Sync Convertlv_root VolGroup -wi-ao---- 18.54g lv_swap VolGroup -wi-ao---- 992.00m demo clustervg -wi-a----- 4.00g
[root@server1 ~]# ##server2
[root@server2 ~]# lvsLV VG Attr LSize Pool Origin Data% Move Log Cpy%Sync Convertlv_root VolGroup -wi-ao---- 18.54g lv_swap VolGroup -wi-ao---- 992.00m demo clustervg -wi-a----- 4.00g
[root@server2 ~]#[root@server1 ~]# mkfs.ext4 /dev/clustervg/demo
[root@server1 ~]# clusvcadm -d nginx
##关闭前面实验的nginx
Local machine disabling service:nginx...Success
[root@server1 ~]# 
Mysql 测试——挂载测试
[root@server1 ~]# yum install -y mysql-server
[root@server2 ~]# yum install -y mysql-server[root@server1 ~]# ll -d /var/lib/mysql/
drwxr-xr-x 2 mysql mysql 4096 Aug 9 2013 /var/lib/mysql/
[root@server1 ~]# cd /var/lib/mysql/
[root@server1 mysql]# ls
[root@server1 mysql]# ll -d .
drwxr-xr-x 2 mysql mysql 4096 Aug 9 2013 .
[root@server1 mysql]# cd
[root@server1 ~]# mount /dev/clustervg/demo /var/lib/mysql/
[root@server1 ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup-lv_root 19134332 1228212 16934140 7% /
tmpfs 510188 25656 484532 6% /dev/shm
/dev/vda1 495844 33466 436778 8% /boot
/dev/mapper/clustervg-demo 4128448 139256 3779480 4% /var/lib/mysql
[root@server1 ~]# ll -d /var/lib/mysql/
drwxr-xr-x 3 root root 4096 Aug 2 15:49 /var/lib/mysql/
[root@server1 ~]# chown mysql.mysql /var/lib/mysql/
[root@server1 ~]# ll -d /var/lib/mysql/
drwxr-xr-x 3 mysql mysql 4096 Aug 2 15:49 /var/lib/mysql/
[root@server1 ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup-lv_root 19134332 1228212 16934140 7% /
tmpfs 510188 25656 484532 6% /dev/shm
/dev/vda1 495844 33466 436778 8% /boot
/dev/mapper/clustervg-demo 4128448 139256 3779480 4% /var/lib/mysql
[root@server1 ~]# /etc/init.d/mysqld start
[root@server1 ~]# cd -
/var/lib/mysql
[root@server1 mysql]# ls
ibdata1 ib_logfile0 ib_logfile1 lost+found mysql mysql.sock test
[root@server1 mysql]# /etc/init.d/mysqld stop
Stopping mysqld: [ OK ]
[root@server1 mysql]# cd
[root@server1 ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup-lv_root 19134332 1228216 16934136 7% /
tmpfs 510188 25656 484532 6% /dev/shm
/dev/vda1 495844 33466 436778 8% /boot
/dev/mapper/clustervg-demo 4128448 160724 3758012 5% /var/lib/mysql
[root@server1 ~]# umount /var/lib/mysql/
[root@server1 ~]# [root@server2 ~]# mount /dev/clustervg/demo /var/lib/mysql/
[root@server2 ~]# ll -d /var/lib/mysql/
drwxr-xr-x 5 mysql mysql 4096 Aug 2 16:02 /var/lib/mysql/
[root@server2 ~]# cd /var/lib/mysql/
[root@server2 mysql]# ls
ibdata1 ib_logfile0 ib_logfile1 lost+found mysql test
[root@server2 mysql]# /etc/init.d/mysqld start
Starting mysqld: [ OK ]
[root@server2 mysql]# /etc/init.d/mysqld stop
Stopping mysqld: [ OK ]
[root@server2 mysql]# cd
[root@server2 ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup-lv_root 19134332 1148688 17013664 7% /
tmpfs 510188 25656 484532 6% /dev/shm
/dev/vda1 495844 33466 436778 8% /boot
/dev/mapper/clustervg-demo 4128448 160724 3758012 5% /var/lib/mysql
[root@server2 ~]# umount /var/lib/mysql/
[root@server2 ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup-lv_root 19134332 1148688 17013664 7% /
tmpfs 510188 25656 484532 6% /dev/shm
/dev/vda1 495844 33466 436778 8% /boot
[root@server2 ~]#
[root@server1 ~]# clustat
Cluster Status for tutu @ Thu Aug 2 16:13:35 2018
Member Status: QuorateMember Name ID Status------ ---- ---- ------server1 1 Online, Local, rgmanagerserver2 2 Online, rgmanagerService Name Owner (Last) State ------- ---- ----- ------ ----- service:mysql server1 started
[root@server1 ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup-lv_root 19134332 1228232 16934120 7% /
tmpfs 510188 25656 484532 6% /dev/shm
/dev/vda1 495844 33466 436778 8% /boot
/dev/mapper/clustervg-demo 4128448 160724 3758012 5% /var/lib/mysql
[root@server1 ~]# mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.1.71 Source distributionCopyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.mysql> show databases;
+---------------------+
| Database |
+---------------------+
| information_schema |
| #mysql50#lost+found |
| mysql |
| test |
+---------------------+
4 rows in set (0.00 sec)mysql> quit
Bye
[root@server1 ~]# cd /var/lib/mysql/
[root@server1 mysql]# ls
ibdata1 ib_logfile0 ib_logfile1 lost+found mysql mysql.sock test
[root@server1 mysql]# cd
[root@server1 ~]#
[root@server1 ~]# clustat
Cluster Status for tutu @ Thu Aug 2 16:30:18 2018
Member Status: QuorateMember Name ID Status------ ---- ---- ------server1 1 Online, Local, rgmanagerserver2 2 Online, rgmanagerService Name Owner (Last) State ------- ---- ----- ------ ----- service:mysql server1 stopping ##server1 正在停止
[root@server1 ~]# clustat
Cluster Status for tutu @ Thu Aug 2 16:30:32 2018
Member Status: QuorateMember Name ID Status------ ---- ---- ------server1 1 Online, Local, rgmanagerserver2 2 Online, rgmanagerService Name Owner (Last) State ------- ---- ----- ------ ----- service:mysql server2 started
##server2 开始工作
[root@server1 ~]#
集群化文件系统
本地文件系统演示
[root@server2 ~]# clustat
Cluster Status for tutu @ Thu Aug 2 17:08:17 2018
Member Status: QuorateMember Name ID Status------ ---- ---- ------server1 1 Online, rgmanagerserver2 2 Online, Local, rgmanagerService Name Owner (Last) State ------- ---- ----- ------ ----- service:mysql server2 started
[root@server2 ~]# clusvcadm -d mysql
Local machine disabling service:mysql...Success
[root@server2 ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup-lv_root 19134332 1148744 17013608 7% /
tmpfs 510188 25656 484532 6% /dev/shm
/dev/vda1 495844 33466 436778 8% /boot
[root@server2 ~]#
[root@server1 ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup-lv_root 19134332 1228292 16934060 7% /
tmpfs 510188 25656 484532 6% /dev/shm
/dev/vda1 495844 33466 436778 8% /boot
[root@server1 ~]# lvsLV VG Attr LSize Pool Origin Data% Move Log Cpy%Sync Convertlv_root VolGroup -wi-ao---- 18.54g lv_swap VolGroup -wi-ao---- 992.00m demo clustervg -wi-a----- 4.00g
[root@server1 ~]# mount /dev/clustervg/demo /var/lib/mysql/
[root@server1 ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup-lv_root 19134332 1228292 16934060 7% /
tmpfs 510188 25656 484532 6% /dev/shm
/dev/vda1 495844 33466 436778 8% /boot
/dev/mapper/clustervg-demo 4128448 160724 3758012 5% /var/lib/mysql[root@server1 ~]# vgsVG #PV #LV #SN Attr VSize VFree VolGroup 1 2 0 wz--n- 19.51g 0 clustervg 1 1 0 wz--nc 20.00g 16.00g
[root@server1 ~]# [root@server2 ~]# vgsVG #PV #LV #SN Attr VSize VFree VolGroup 1 2 0 wz--n- 19.51g 0 clustervg 1 1 0 wz--nc 20.00g 16.00g
[root@server2 ~]# [root@server1 ~]# lvextend -L +8G /dev/clustervg/demo
##逻辑卷拉伸Extending logical volume demo to 12.00 GiBLogical volume demo successfully resized
[root@server1 ~]# vgsVG #PV #LV #SN Attr VSize VFreeVolGroup 1 2 0 wz--n- 19.51g 0 clustervg 1 1 0 wz--nc 20.00g 8.00g
[root@server1 ~]#[root@server2 ~]# vgsVG #PV #LV #SN Attr VSize VFreeVolGroup 1 2 0 wz--n- 19.51g 0 clustervg 1 1 0 wz--nc 20.00g 8.00g
[root@server2 ~]#[root@server2 ~]# lvsLV VG Attr LSize Pool Origin Data% Move Log Cpy%Sync Convertlv_root VolGroup -wi-ao---- 18.54g lv_swap VolGroup -wi-ao---- 992.00m demo clustervg -wi-a----- 12.00g
[root@server2 ~]#[root@server1 ~]# lvsLV VG Attr LSize Pool Origin Data% Move Log Cpy%Sync Convertlv_root VolGroup -wi-ao---- 18.54g lv_swap VolGroup -wi-ao---- 992.00m demo clustervg -wi-ao---- 12.00g
[root@server1 ~]# [root@server1 ~]# resize2fs /dev/clustervg/demo
[root@server1 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup-lv_root 19G 1.2G 17G 7% /
tmpfs 499M 26M 474M 6% /dev/shm
/dev/vda1 485M 33M 427M 8% /boot
/dev/mapper/clustervg-demo 12G 159M 12G 2% /var/lib/mysql
[root@server1 ~]#[root@server2 ~]# mount /dev/clustervg/demo /var/lib/mysql/
[root@server2 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup-lv_root 19G 1.1G 17G 7% /
tmpfs 499M 26M 474M 6% /dev/shm
/dev/vda1 485M 33M 427M 8% /boot
/dev/mapper/clustervg-demo 12G 159M 12G 2% /var/lib/mysql
[root@server2 ~]#[root@server1 ~]# cd /var/lib/mysql/
[root@server1 mysql]# ls
ibdata1 ib_logfile0 ib_logfile1 lost+found mysql test
[root@server1 mysql]# cp /etc/passwd .
[root@server1 mysql]# ls
ibdata1 ib_logfile0 ib_logfile1 lost+found mysql passwd test
[root@server1 mysql]#[root@server2 ~]# cd /var/lib/mysql/
[root@server2 mysql]# ls
##此时会有一个错误提示
ls: cannot access passwd: Input/output error
ibdata1 ib_logfile0 ib_logfile1 lost+found mysql passwd test
[root@server2 mysql]# cd
[root@server2 ~]# umount /var/lib/mysql/
[root@server2 ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup-lv_root 19134332 1148752 17013600 7% /
tmpfs 510188 25656 484532 6% /dev/shm
/dev/vda1 495844 33466 436778 8% /boot
[root@server2 ~]#[root@server1 mysql]# cd
[root@server1 ~]# umount /var/lib/mysql/
[root@server1 ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup-lv_root 19134332 1228296 16934056 7% /
tmpfs 510188 25656 484532 6% /dev/shm
/dev/vda1 495844 33466 436778 8% /boot
[root@server1 ~]#这种方式一个文件修改后，在另一台主机上看不到更改后的内容
因为所用的文件系统是ext4，这是一种本地的文件系统，所以更改后不能同时生效
真实的生产环境中是不能用这种方式实现磁盘共享的
解决方法：使用网路文件系统gfs2
使用这种文件系统，两个initiator端要实现通信，实现通信的方法是将initiator主机加入到一个集群中
GFS2 作为 RedHat
集群文件系统采用分布式元数据和多日志方式(multiple journal),并且 RedHat 仅支持 GFS2
文件系统作为高可用性集群文件系统部署使用。因为性能问题,从 RedHat Enterprise Linux 6
开始,GFS2 不再被支持作为单节点文件系统使用。
集群化文件系统
##查看集群中的主机
[root@server1 ~]# clustat
Cluster Status for tutu @ Thu Aug 2 17:30:23 2018
Member Status: QuorateMember Name ID Status------ ---- ---- ------server1 1 Online, Local, rgmanagerserver2 2 Online, rgmanagerService Name Owner (Last) State ------- ---- ----- ------ ----- service:mysql (server2) disabled
[root@server1 ~]# mkfs.gfs2 -j 3 -p lock_dlm -t tutu:mygfs2 /dev/clustervg/demo
##格式化磁盘创建文件系统
## -j 3 通常日志的存放文件个数是节点数+1
[root@server1 ~]# mount /dev/clustervg/demo /var/lib/mysql/
[root@server1 ~]# cd /var/lib/mysql/
[root@server1 mysql]# ll
total 0
[root@server1 mysql]# ll -d
drwxr-xr-x 2 root root 3864 Aug 2 17:40 .
[root@server1 mysql]# [root@server2 ~]# mount /dev/clustervg/demo /var/lib/mysql/
[root@server2 ~]# ll -d /var/lib/mysql/
drwxr-xr-x 2 root root 3864 Aug 2 17:40 /var/lib/mysql/
[root@server2 ~]# [root@server1 mysql]# /etc/init.d/mysqld
[root@server1 mysql]# ll -d
drwxr-xr-x 4 mysql mysql 3864 Aug 2 17:44 .
[root@server1 mysql]# ls
ibdata1 ib_logfile0 ib_logfile1 mysql mysql.sock test
[root@server1 mysql]#[root@server2 ~]# ll -d /var/lib/mysql/
drwxr-xr-x 4 mysql mysql 3864 Aug 2 17:44 /var/lib/mysql/
[root@server2 ~]# ls /var/lib/mysql/
ibdata1 ib_logfile0 ib_logfile1 mysql mysql.sock test
[root@server2 ~]#
[root@server2 ~]# gfs2_tool sb /dev/clustervg/demo all
##配置、调试文件系统或收集有关文件系统的信息mh_magic = 0x01161970mh_type = 1mh_format = 100sb_fs_format = 1801sb_multihost_format = 1900sb_bsize = 4096sb_bsize_shift = 12no_formal_ino = 2no_addr = 23no_formal_ino = 1no_addr = 22sb_lockproto = lock_dlmsb_locktable = tutu:mygfs2uuid = b81d11be-6c2d-2841-1980-30410272190f
[root@server2 ~]# gfs2_tool journals /dev/clustervg/demo all
journal2 - 128MB
journal1 - 128MB
journal0 - 128MB
3 journal(s) found.
[root@server2 ~]# [root@server1 mysql]# /etc/init.d/mysqld stop
Stopping mysqld: [ OK ]
[root@server1 mysql]# cd
[root@server1 ~]###开机自动挂载测试
[root@server1 ~]# vim /etc/fstab
[root@server1 ~]# cat /etc/fstab | tail -n 1
/dev/clustervg/demo /var/lib/mysql gfs2 _netdev 0 0
[root@server1 ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup-lv_root 19134332 1228304 16934048 7% /
tmpfs 510188 31816 478372 7% /dev/shm
/dev/vda1 495844 33466 436778 8% /boot
/dev/mapper/clustervg-demo 12581504 286520 12294984 3% /var/lib/mysql
[root@server1 ~]# umount /var/lib/mysql/
[root@server1 ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup-lv_root 19134332 1228304 16934048 7% /
tmpfs 510188 25656 484532 6% /dev/shm
/dev/vda1 495844 33466 436778 8% /boot
[root@server1 ~]# mount -a
[root@server1 ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup-lv_root 19134332 1228304 16934048 7% /
tmpfs 510188 31816 478372 7% /dev/shm
/dev/vda1 495844 33466 436778 8% /boot
/dev/mapper/clustervg-demo 12581504 286520 12294984 3% /var/lib/mysql
[root@server1 ~]#[root@server2 ~]# vim /etc/fstab
[root@server2 ~]# cat /etc/fstab | tail -n 1
/dev/clustervg/demo /var/lib/mysql gfs2 _netdev 0 0
[root@server2 ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup-lv_root 19134332 1148760 17013592 7% /
tmpfs 510188 31816 478372 7% /dev/shm
/dev/vda1 495844 33466 436778 8% /boot
/dev/mapper/clustervg-demo 12581504 286520 12294984 3% /var/lib/mysql
[root@server2 ~]# mount -a
[root@server2 ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup-lv_root 19134332 1148760 17013592 7% /
tmpfs 510188 31816 478372 7% /dev/shm
/dev/vda1 495844 33466 436778 8% /boot
/dev/mapper/clustervg-demo 12581504 286520 12294984 3% /var/lib/mysql
[root@server2 ~]#[root@server1 ~]# clustat
Cluster Status for tutu @ Thu Aug 2 17:54:33 2018
Member Status: QuorateMember Name ID Status------ ---- ---- ------server1 1 Online, Local, rgmanagerserver2 2 Online, rgmanagerService Name Owner (Last) State ------- ---- ----- ------ ----- service:mysql (server2) disabled
[root@server1 ~]# clusvcadm -e mysql
##本节点，即server1 启用 mysql 服务
Local machine trying to enable service:mysql...Success
service:mysql is now running on server1
[root@server1 ~]# mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.1.71 Source distributionCopyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.mysql> quit
Bye
[root@server1 ~]# clusvcadm -r mysql -m server2
## 切换节点进行 mysql 服务
Trying to relocate service:mysql to server2...Success
service:mysql is now running on server2
[root@server1 ~]# clustat
Cluster Status for tutu @ Thu Aug 2 18:06:07 2018
Member Status: QuorateMember Name ID Status------ ---- ---- ------server1 1 Online, Local, rgmanagerserver2 2 Online, rgmanagerService Name Owner (Last) State ------- ---- ----- ------ ----- service:mysql server2 started
[root@server1 ~]#[root@server2 ~]# mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.1.71 Source distributionCopyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.mysql> quit
Bye
[root@server2 ~]#RHCS套件实现高可用负载均衡集群（三）——共享存储相关推荐
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