RHCS+nginx实现高可用负载均衡及fence机制的添加

其他 2019-04-08 13:40:53 阅读次数: 0

1.高可用性：应用/服务故障切换－通过创建n个节点的服务器集群来实现关键应用和服务的故障切换
2.负载均衡：IP 负载均衡－对一群服务器上收到的 IP 网络请求进行负载均衡
这里写图片描述

实验环境

iptables和selinux关闭
fence：物理机 172.25.69.250
主节点：server1 172.25.69.1
副节点：server2 172.25.69.2

rhcs基本环境搭建

server1：
[root@server1 ~]# vim /etc/hosts
[root@server1 ~]# scp -r /usr/local/nginx/ server2:/usr/local/
[root@server1 ~]# scp /etc/yum.repos.d/rhel-source.repo server2:/etc/yum.repos.d/   //配置yum源
[root@server1 ~]# cat /etc/yum.repos.d/rhel-source.repo 
[rhel-source]
name=Red Hat Enterprise Linux $releasever - $basearch - Source
baseurl=http://172.25.69.250/rhel6.5
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
[HighAvailability]
name=HighAvailability
baseurl=http://172.25.69.250/rhel6.5/HighAvailability
gpgcheck=0
[LoadBalancer]
name=LoadBalancer
baseurl=http://172.25.69.250/rhel6.5/LoadBalancer
gpgcheck=0
[ResilientStorage]
name=ResilientStorage
baseurl=http://172.25.69.250/rhel6.5/ResilientStorage
gpgcheck=0
[ScalableFileSystem]
name=ScalableFileSystem
baseurl=http://172.25.69.250/rhel6.5/ScalableFileSystem
gpgcheck=0
[root@server1 ~]# yum install -y luci ricci
[root@server1 ~]# chkconfig luci on
[root@server1 ~]# chkconfig ricci on
[root@server1 ~]# passwd ricci
[root@server1 ~]# /etc/init.d/ricci start
[root@server1 ~]# /etc/init.d/luci start
[root@server1 ~]# netstat -antlp | grep ricci
tcp        0      0 :::11111                    :::*                        LISTEN      1322/ricci          
[root@server1 ~]# nginx
[root@server1 ~]# netstat -antlp | grep nginx
tcp        0      0 0.0.0.0:80                  0.0.0.0:*                   LISTEN      1328/nginx    

server2：
[root@server2 ~]# ln -s /usr/local/nginx/sbin/nginx /usr/local/sbin/
[root@server2 ~]# useradd -u 500 nginx
[root@server2 ~]# nginx
[root@server2 ~]# netstat -antlp | grep nginx
tcp        0      0 0.0.0.0:80                  0.0.0.0:*                   LISTEN      1091/nginx          
[root@server2 ~]# yum install -y ricci
[root@server2 ~]# /etc/init.d/ricci start
[root@server2 ~]# netstat -antlp | grep ricci
tcp        0      0 :::11111                    :::*                        LISTEN      1291/ricci          
[root@server2 ~]# nginx
[root@server2 ~]# chkconfig ricci on
[root@server2 ~]# passwd ricci

物理机：
[root@foundation54 ~]# vim /etc/hosts //添加本地解析
172.25.69.1 server1
172.25.69.2 server2
浏览器：

浏览器访问:https://server1:8084,luci自动开启8084端口接受集群节点的11111端口的数据包
点击Advanced进入
这里写图片描述
点击Confirm…
这里写图片描述
使用server1的root密码登陆
这里写图片描述
点击Create创建集群，Add添加已经创建好的集群，集群名称不要用数字，不超过15个字符，其中的密码是ricci用户的密码
这里写图片描述
这里写图片描述
注意：
1)Use the Same Password for All Nodes的前面如果有对号,则表示集群节点的密码相同,集群节点的密码为刚才为 ricci 的设定的密码
2) Download Packages:表示自动下载需要的安装包
3)Use Locally Installed Packages:表示根据本地已下载的安装包来下载
4)Reboot Nodes Before Joining Cluster:创建集群后会重启动集群节点,所以之前要将集群管理工具(luci和ricci设置为开机自启动)
5)Enable Shared Storage Support:开启集群共享存储功能
这里写图片描述
这里写图片描述
rgmanager资源代理，启动虚拟ip，启动脚本
Modclusterd状态监控
clvmd存储,集群逻辑化卷
ccs
fence处理网络和节点问题，存储的安全性，保证存储不出现“脑裂”的情况
注意：过程中不可打开NetworkManager
当节点不能正常加载的时候开启cman、rgmanager、ricci、modclusterd、clvmd服务

物理机
[root@foundation69 ~]# yum install fence-virtd-multicast fence-virtd fence-virtd-libvirt -y
[root@foundation69 ~]# fence_virtd -c  //编写新的fence 信息
Module search path [/usr/lib64/fence-virt]: /usr/lib64/fence-virt //模块默认位置
Listener module [multicast]: multicast
Multicast IP Address [225.0.0.12]: 225.0.0.12
Using ipv4 as family.   //默认的
Multicast IP Port [1229]: 1229
Interface [virbr0]: br0
//这里br0是因为虚拟服务器受主机控制的网卡是br0
Key File [/etc/cluster/fence_xvm.key]: /etc/cluster/fence_xvm.key
Backend module [libvirt]: libvirt
[root@foundation69 ~]# cat /etc/fence_virt.conf  //此时查看配置文件
backends {
    libvirt {
        uri = "qemu:///system";
    }

}

listeners {
    multicast {
        port = "1229";
        family = "ipv4";
        interface = "br0";
        address = "225.0.0.12";
        key_file = "/etc/cluster/fence_xvm.key";
    }

}

fence_virtd {
    module_path = "/usr/lib64/fence-virt";
    backend = "libvirt";
    listener = "multicast";
}

[root@foundation69 ~]# mkdir /etc/cluster
[root@foundation69 ~]# dd if=/dev/urandom of=/etc/cluster/fence_xvm.key bs=128 count=1
[root@foundation69 ~]# file /etc/cluster/fence_xvm.key //查看文件类型
/etc/cluster/fence_xvm.key: data
[root@foundation69 ~]# systemctl restart fence_virtd
[root@foundation69 ~]# systemctl enable fence_virtd
[root@foundation69 ~]# netstat -anulp | grep fence_virtd
udp        0      0 0.0.0.0:1229            0.0.0.0:*                           8657/fence_virtd    
[root@foundation69 Desktop]# scp /etc/cluster/fence_xvm.key server1:/etc/cluster/
[root@foundation69 Desktop]# scp /etc/cluster/fence_xvm.key server1:/etc/cluster/

这里写图片描述
创建成功后：
这里写图片描述

[root@server1 ~]# cat /etc/cluster/cluster.conf //查看配置信息
<?xml version="1.0"?>
<cluster config_version="2" name="ying">
    <clusternodes>
        <clusternode name="server1" nodeid="1"/>
        <clusternode name="server2" nodeid="2"/>
    </clusternodes>
    <cman expected_votes="1" two_node="1"/>
    <fencedevices>
        <fencedevice agent="fence_xvm" name="vmfence"/>
    </fencedevices>
</cluster>

点击server1，指定主fence
这里写图片描述这里写图片描述
这里写图片描述
这里写图片描述
查看UUID：
这里写图片描述
这里写图片描述
配置完如下图：
这里写图片描述
server2配置同server1

[root@server1 ~]# cat /etc/cluster/cluster.conf //查看配置信息
<?xml version="1.0"?>
<cluster config_version="6" name="ying">
    <clusternodes>
        <clusternode name="server1" nodeid="1">
            <fence>
                <method name="fence1">
                    <device domain="1db9e489-f33a-425e-949e-a5d53b7bd0b5" name="vmfence"/>
                </method>
            </fence>
        </clusternode>
        <clusternode name="server2" nodeid="2">
            <fence>
                <method name="fence2">
                    <device domain="1db9e489-f33a-425e-949e-a5d53b7bd0b5" name="vmfence"/>
                </method>
            </fence>
        </clusternode>
    </clusternodes>
    <cman expected_votes="1" two_node="1"/>
    <fencedevices>
        <fencedevice agent="fence_xvm" name="vmfence"/>
    </fencedevices>
</cluster>

这里写图片描述
这里写图片描述
数字1，2：表示优先级，数字越小优先级越高
No Failback：表示失败的，回来时不会切换
添加共享服务:
VIP:ip保证和其他不重复，默认10秒钟检测ip是否坏的
Montor Link 监控链接
这里写图片描述
Nginx：
这里写图片描述
server1、server2均制作脚本 /etc/init.d/nginx：

[root@server1 ~]# vim /etc/init.d/nginx
#!/bin/bash
# nginx Startup script for the Nginx HTTP Server
# it is v.0.0.2 version.
# chkconfig: - 85 15
# description: Nginx is a high-performance web and proxy server.
#              It has a lot of features, but it's not for everyone.
# processname: nginx
# pidfile: /var/run/nginx.pid
# config: /usr/local/nginx/conf/nginx.conf
nginxd=/usr/local/nginx/sbin/nginx
nginx_config=/usr/local/nginx/conf/nginx.conf
nginx_pid=/var/run/nginx.pid
RETVAL=0
prog="nginx"
# Source function library.
. /etc/rc.d/init.d/functions
# Source networking configuration.
. /etc/sysconfig/network
# Check that networking is up.
[ ${NETWORKING} = "no" ] && exit 0
[ -x $nginxd ] || exit 0
# Start nginx daemons functions.
start() {
if [ -e $nginx_pid ];then
   echo "nginx already running...."
   exit 1
fi
   echo -n $"Starting $prog: "
   daemon $nginxd -c ${nginx_config}
   RETVAL=$?
   echo
   [ $RETVAL = 0 ] && touch /var/lock/subsys/nginx
   return $RETVAL
}
# Stop nginx daemons functions.
stop() {
        echo -n $"Stopping $prog: "
        killproc $nginxd
        RETVAL=$?
        echo
        [ $RETVAL = 0 ] && rm -f /var/lock/subsys/nginx /var/run/nginx.pid
}
# reload nginx service functions.
reload() {
    echo -n $"Reloading $prog: "
    #kill -HUP `cat ${nginx_pid}`
    killproc $nginxd -HUP
    RETVAL=$?
    echo
}
# See how we were called.
case "$1" in
start)
        start
        ;;
stop)
        stop
        ;;
reload)
        reload
        ;;
restart)
        stop
        start
        ;;
status)
        status $prog
        RETVAL=$?
        ;;

*)
        echo $"Usage: $prog {start|stop|restart|reload|status|help}"
        exit 1
esac
exit $RETVAL
[root@server1 ~]# chmod a+x /etc/init.d/nginx
[root@server1 ~]# /etc/init.d/nginx status
nginx is stopped
[root@server1 ~]# /etc/init.d/nginx start
Starting nginx:                                            [  OK  ]
[root@server1 ~]# /etc/init.d/nginx reload
Reloading nginx:                                           [  OK  ]
[root@server1 ~]# /etc/init.d/nginx stop

server2同server1
[root@server2 ~]# /etc/init.d/nginx status
nginx is stopped

添加资源
这里写图片描述
这里写图片描述
这里写图片描述
这里写图片描述
Run Exclusive：运行独占，只能在server1和server2上运行
注意下面添加的资源顺序就是集群启动后服务启动的顺序,所以要先添加vip,再添加nginx，添加时选择Add Resource
这里写图片描述
这里写图片描述
添加完之后就会显示服务运行中……
这里写图片描述

高可用

server1：
[root@server1 ~]# cat /usr/local/nginx/html/ying.html  //添加nginx发布页面内容
<h1>www.ying.org-server1<h1>

server2：
[root@server2 ~]# cat /usr/local/nginx/html/ying.html
<h1>www.ying.org-server2<h1>

这里写图片描述

[root@server1 ~]# clustat
Cluster Status for ying @ Wed Aug  1 22:23:00 2018
Member Status: Quorate

 Member Name                            ID   Status
 ------ ----                            ---- ------
 server1                                    1 Online, Local, rgmanager
 server2                                    2 Online, rgmanager

 Service Name                  Owner (Last)                  State         
 ------- ----                  ----- ------                  -----         
 service:nginx                 server1                       started    
如果关闭server1的服务浏览器就会看到server2的发布内容
[root@server1 ~]# /etc/init.d/nginx stop

这里写图片描述
这里写图片描述

server1：
[root@server1 ~]# clustat
Cluster Status for ying @ Wed Aug  1 23:26:44 2018
Member Status: Quorate

 Member Name                            ID   Status
 ------ ----                            ---- ------
 server1                                    1 Online, Local, rgmanager
 server2                                    2 Online, rgmanager

 Service Name                  Owner (Last)                  State         
 ------- ----                  ----- ------                  -----         
 service:nginx                 server2                       started 

server2：
[root@server2 ~]# clustat
Cluster Status for ying @ Thu Aug  2 04:16:35 2018
Member Status: Quorate

 Member Name                             ID   Status
 ------ ----                             ---- ------
 server1                                     1 Online, rgmanager
 server2                                     2 Online, Local, rgmanager

 Service Name                   Owner (Last)                   State         
 ------- ----                   ----- ------                   -----         
 service:nginx                  server1                        started       
[root@server2 ~]# clusvcadm -d nginx
Local machine disabling service:nginx...Success
[root@server2 ~]# clusvcadm -e nginx
Local machine trying to enable service:nginx...Success
service:nginx is now running on server1
[root@server2 ~]# clusvcadm -r nginx -m server2
Trying to relocate service:nginx to server4...Success
service:nginx is now running on server2
[root@server2 ~]# clustat
Cluster Status for ying @ Thu Aug  2 04:19:39 2018
Member Status: Quorate

 Member Name                             ID   Status
 ------ ----                             ---- ------
 server1                                     1 Online, rgmanager
 server2                                     2 Online, Local, rgmanager

 Service Name                   Owner (Last)                   State         
 ------- ----                   ----- ------                   -----         
 service:nginx                  server2                        started

负载均衡

server3:
[root@server3 ~]# /etc/init.d/httpd start
[root@server3 ~]# cat /var/www/html/index
www.westos.org-server3

server4：
[root@server4 ~]# /etc/init.d/httpd start
[root@server4 ~]# cat /var/www/html/index
www.westos.org

浏览器测试：
这里写图片描述这里写图片描述

fence测试:
[root@server1 ~]# clustat
Cluster Status for ying @ Thu Aug  2 06:16:00 2018
Member Status: Quorate

 Member Name                           ID   Status
 ------ ----                           ---- ------
 Server1                                  2 Online, Local, rgmanager
 Server2                                  1 Online, rgmanager


 Service Name                 Owner (Last)                 State         
 ------- ----                 ----- ------                 -----         
 service:nginx                server2                      started       
[root@server1 ~]# fence_node server2  //server2会自动重启，服务会变成server1
fence server2 success
[root@server1 ~]# clustat
Cluster Status for ying @ Thu Aug  2 06:46:53 2018
Member Status: Quorate

 Member Name                           ID   Status
 ------ ----                           ---- ------
 Server1                                  2 Online, Local, rgmanager
 Server2                                  1 Online, rgmanager


 Service Name                 Owner (Last)                 State         
 ------- ----                 ----- ------                 -----         
 service:nginx                server1                     started

这里写图片描述

扫描二维码关注公众号，回复： 5809571 查看本文章 
[root@server2~]# clustat
Cluster Status for ying @ Thu Aug  2 06:34:09 2018
Member Status: Quorate

 Member Name                           ID   Status
 ------ ----                           ---- ------
 server1                                   1 Online, rgmanager
 Server2                                   2 Online, Local, rgmanager

 Service Name                 Owner (Last)                 State         
 ------- ----                 ----- ------                 -----         
 service:nginx                server2                      started  
[root@server2~]# echo c > /proc/sysrq-trigger //破坏内核；服务切换到server1

rhcs实现VIP+存储

server3:
[root@server3 ~]# yum install -y scsi-*
[root@server3 ~]# vim /etc/tgt/targets.conf
 38 <target iqn.2018-08.com.example:server.target1>
 39     backing-store /dev/vdb
 40     initiator-address 172.25.69.1
 41     initiator-address 172.25.69.2
 42 </target>
[root@server3 ~]# /etc/init.d/tgtd start
[root@server3 ~]# chkconfig tgtd on  //一定要设置开机自启，物理机的fence服务也要设置开机自启

server1:
[root@server1 ~]# yum install iscsi-*
[root@server1 ~]# iscsiadm -m discovery -t st -p 172.25.69.3
[root@server1 ~]# iscsiadm -m node -l
[root@server1 ~]# fdisk -l
Disk /dev/sda: 21.5 GB, 21474836480 bytes
[root@server1 ~]# /etc/init.d/clvmd status
[root@server1 ~]# lvs
  LV      VG       Attr       LSize   Pool Origin Data%  Move Log Cpy%Sync Convert
  lv_root VolGroup -wi-ao----  18.54g                                             
  lv_swap VolGroup -wi-ao---- 992.00m                                             
[root@server1 ~]# pvcreate /dev/sda
[root@server1 ~]# vgcreate clustervg /dev/sda
[root@server1 ~]# lvcreate -L 4G -n demo clustervg
[root@server1 ~]# mkfs.ext4 /dev/clustervg/demo

server2:
[root@server2 ~]# yum install iscsi-* -y
[root@server2 ~]# iscsiadm -m discovery -t st -p 172.25.69.3
[root@server2 ~]# iscsiadm -m node -l
[root@server2 ~]# fdisk -l
Disk /dev/sda: 21.5 GB, 21474836480 bytes
[root@server2 ~]# pvs
  PV         VG        Fmt  Attr PSize  PFree 
  /dev/sda   clustervg lvm2 a--  20.00g 20.00g
  /dev/vda2  VolGroup  lvm2 a--  19.51g     0 
[root@server2 ~]# vgs
  VG        #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 ~]# lvs
  LV      VG        Attr       LSize   Pool Origin Data%  Move Log Cpy%Sync Convert
  lv_root VolGroup  -wi-ao----  18.54g                                             
  lv_swap VolGroup  -wi-ao---- 992.00m                                             
  demo    clustervg -wi-a-----   4.00g                                             

server1:
[root@server1 ~]# clusvcadm -d nginx

进入浏览器删掉:
这里写图片描述

server1：
[root@server1 ~]# yum install mysql mysql-server-y
[root@server1 ~]# cd /var/lib/mysql
[root@server1 mysql]# ls
[root@server1 mysql]# mount /dev/clustervg/demo /var/lib/mysql/
[root@server1 mysql]# df
/dev/mapper/clustervg-demo     4128448  139256   3779480   4% /var/lib/mysql
[root@server1 mysql]# ll -d /var/lib/mysql/
drwxr-xr-x 3 root root 4096 Aug  2 07:41 /var/lib/mysql/
[root@server1 mysql]# chown mysql.mysql /var/lib/mysql/
[root@server1 mysql]# cd
[root@server1 ~]# /etc/init.d/mysqld start
[root@server1 ~]# cd -
[root@server1 mysql]# ls
ibdata1  ib_logfile0  ib_logfile1  lost+found  mysql  mysql.sock  test
[root@server1 mysql]# /etc/init.d/mysqld stop
[root@server1 mysql]# cd
[root@server1 ~]# umount /var/lib/mysql

server2：
[root@server2 ~]# yum install mysql-server -y
[root@server2 ~]# mount /dev/clustervg/demo /var/lib/mysql/
[root@server2 ~]# df
/dev/mapper/clustervg-demo     4128448  160724   3758012   5% /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
[root@server2 mysql]# ls
ibdata1  ib_logfile0  ib_logfile1  lost+found  mysql  mysql.sock  test
[root@server2 mysql]# cd
[root@server2 ~]# /etc/init.d/mysqld stop

这里写图片描述
这里写图片描述
这里写图片描述
这里写图片描述
这里写图片描述
这里写图片描述
这里写图片描述

[root@server1 ~]# df
/dev/mapper/clustervg-demo     4128448  160724   3758012   5% /var/lib/mysql
[root@server1 ~]# clustat  //查看在使用server1
Cluster Status for ying @ Thu Aug  2 09:03:20 2018
Member Status: Quorate

 Member Name                            ID   Status
 ------ ----                            ---- ------
 server1                                    1 Online, Local, rgmanager
 server2                                    2 Online, rgmanager

 Service Name                  Owner (Last)                  State         
 ------- ----                  ----- ------                  -----         
 service:mysql                 server1                       started     
[root@server1 ~]# mysql  //server1可以打开数据库
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.1.71 Source distribution

Copyright (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> exit
Bye

rhcs实现同步

server1：
[root@server1 ~]# clusvcadm -d mysql  //禁用

在浏览器：
//移除Service Groups里面的Filesystem
//删掉Resources里面的Filesystem
//用命令方式添加gfs2文件系统

server1：
[root@server1 ~]# mount /dev/clustervg/demo /var/lib/mysql/
[root@server1 ~]# df
/dev/mapper/clustervg-demo     4128448  160724   3758012   5% /var/lib/mysql
[root@server1 ~]# vgs
  VG        #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 ~]# lvextend -L +4G /dev/clustervg/demo  //扩展
[root@server1 ~]# resize2fs /dev/clustervg/demo
[root@server1 ~]# df
/dev/mapper/clustervg-demo     8256952  161744   7675832   3% /var/lib/mysql
[root@server1 ~]# df -h
/dev/mapper/clustervg-demo    7.9G  158M  7.4G   3% /var/lib/mysql
[root@server1 ~]# cd /var/lib/mysql
[root@server1 mysql]# ls
ibdata1  ib_logfile0  ib_logfile1  lost+found  mysql  test

##测试数据是否同步
[root@server2 ~]# mount /dev/clustervg/demo /var/lib/mysql  //先挂载在server2上
[root@server2 ~]# cd /var/lib/mysql


[root@server1 mysql]# cp /etc/passwd .  //在server1上面复制一份新的文件
[root@server1 mysql]# ls
ibdata1  ib_logfile0  ib_logfile1  lost+found  mysql  passwd  test


[root@server2 mysql]# ls  //server2上面没有
ibdata1  ib_logfile0  ib_logfile1  lost+found  mysql  test
[root@server2 ~]# umount /var/lib/mysql  //解挂之后重新挂载
[root@server2 ~]# mount /dev/clustervg/demo /var/lib/mysql
[root@server2 ~]# cd /var/lib/mysql
[root@server2 mysql]# ls  //可以查看到新复制的文件，表明数据不能同步
ibdata1  ib_logfile0  ib_logfile1  lost+found  mysql  passwd  test
[root@server2 mysql]# cd
[root@server2 ~]# umount /var/lib/mysql

##解决数据同步
server1：
[root@server1 ~]# umount /var/lib/mysql
[root@server1 ~]# lvremove /dev/clustervg/demo
[root@server1 ~]# lvcreate -L 4G -n demo clustervg
[root@server1 ~]# mkfs.gfs2 -h //查看规则
[root@server1 ~]# mkfs.gfs2 -j 3 -p lock_dlm -t ying:mygfs2 /dev/clustervg/demo    //-t 名称:标签；格式化
[root@server1 ~]# mount /dev/clustervg/demo /var/lib/mysql
[root@server1 ~]# cd /var/lib/mysql
[root@server1 mysql]# ls
[root@server1 mysql]# chown mysql.mysql .
[root@server1 mysql]# ll
total 0
[root@server1 mysql]# ll -d .
drwxr-xr-x 2 mysql mysql 3864 Aug  2 09:21 .
[root@server1 mysql]# /etc/init.d/mysqld start
[root@server1 mysql]# ls
ibdata1  ib_logfile0  ib_logfile1  mysql  mysql.sock  test
[root@server1 mysql]# /etc/init.d/mysqld stop
[root@server1 mysql]# cd
[root@server1 ~]# umount /var/lib/mysql
[root@server1 mysql]# vim /etc/fstab
/dev/clustervg/demo     /var/lib/mysql          gfs2    _netdev         0 0
[root@server1 ~]# mount -a
[root@server1 ~]# df
/dev/mapper/clustervg-demo     4193856  418884   3774972  10% /var/lib/mysql


server2：
[root@server2 mysql]# vim /etc/fstab
/dev/clustervg/demo     /var/lib/mysql          gfs2    _netdev         0 0
[root@server2 ~]# mount -a


server1：
[root@server1 ~]# clusvcadm -e mysql  //激活
[root@server1 ~]# clustat
Cluster Status for ying @ Thu Aug  2 09:29:28 2018
Member Status: Quorate

 Member Name                            ID   Status
 ------ ----                            ---- ------
 server1                                    1 Online, Local, rgmanager
 Server2                                    2 Online, rgmanager

 Service Name                  Owner (Last)                  State         
 ------- ----                  ----- ------                  -----         
 service:mysql                 server1                       started       
[root@server1 ~]# clusvcadm -r mysql -m server2  //切换到server2
[root@server1 ~]# clustat
Cluster Status for ying @ Thu Aug  2 09:51:47 2018
Member Status: Quorate

 Member Name                           ID   Status
 ------ ----                           ---- ------
 server1                                   1 Online, Local, rgmanager
 Server2                                   2 Online, rgmanager

 Service Name                 Owner (Last)                 State         
 ------- ----                 ----- ------                 -----         
 service:mysql                server2                      started   
[root@server1 mysql]# touch haha  //建立一个新的文件haha测试数据是否同步
[root@server1 mysql]# ls
haha  ibdata1  ib_logfile0  ib_logfile1  mysql  mysql.sock  test



[root@server2 ~]# cd /var/lib/mysql
[root@server2 mysql]# ls  //查看到有文件haha,表示可以数据同步
haha  ibdata1  ib_logfile0  ib_logfile1  mysql  mysql.sock  test

猜你喜欢

转载自blog.csdn.net/Ying_smile/article/details/81974114
今日推荐
基于大语言模型的开源知识库问答系统 MaxKB GitHub Star 数量突破 5,000 个！
美国拟限制 AI 大模型出口中国和俄罗斯
苹果将与 OpenAI 达成协议，将 ChatGPT 应用于 iPhone
openKylin 社区生态委员会第六次会议圆满召开
阿里云正式发布通义千问 2.5
Python 3.13 发布首个 Beta：实验性自由线程模式和 JIT、改进交互式解释器
Stack Overflow 拿我的代码去训练 AI 大模型，还封了我的账号
Pop!_OS 的 COSMIC 桌面完成 App Store 上架工作
报告：Django 仍然是 74% 开发者的首选
《2024 年一季度互联网投融资运行情况》研究报告
15 年前上了“FFmpeg 耻辱柱”，今天他还得谢谢咱——腾讯QQPlayer一雪前耻？
TIOBE 5 月榜单：Fortran “复活”进入 Top 10
周排行
BPM为企业带来的实际利益
好程序员web前端分享css常用属性缩写
Java文件下载（excel）
css样式的动态添加及显示和隐藏等零碎用法
axios全局配置以及拦截器
使用Logstash来实时同步MySQL和log日志数据到ES
C++获取当前时间（年月日、时分秒、毫秒）
Odoo产品分析 (四) -- 工具板块(11) -- 网站即时聊天(1)
Java环境配置正确，但是java、javac、java -version均返回“不是内部或外部命令，也不是可运行的程序或批处理文件”？
01 官网下载各种CentOS教程（超详细版）
每日归档
更多
2024-05-14(0)
2024-05-13(18)
2024-05-12(0)
2024-05-11(38)
2024-05-10(38)
2024-05-09(35)
2024-05-08(42)
2024-05-07(14)
2024-05-06(40)
2024-05-05(0)

代码天地 © 2018 codetd.com

境外服务器   最新电视剧2022