corosync（pacemaker）+drbd+mysql

实验环境：
    vm1-ning:172.16.3.1/16
    vm2-hong:172.16.3.2/16

drbd操作步骤：
    1、创建mysql的drbd资源磁盘(两节点都需要创建)
        [[email protected] ~]# fdisk /dev/sda
        n
        p
        +5G
        w
        [[email protected] ~]# kpartx -af /dev/sda
        [[email protected] ~]# partx -a /dev/sda

2、drbd设置（全局配置文件这里和web高可用中的一样没有改变，不再次说明。）
        [[email protected] ~]# cd /etc/drbd.d
        [[email protected] drbd.d]# ls
        global_common.conf  global_common.conf.bak  global_common.conf.rpmsave  web.res
        [[email protected] drbd.d]# cp web.res mydata.res
        [[email protected] drbd.d]# vim mydata.res                        定义资源名称
        [[email protected] drbd.d]# cat mydata.res
        resource mydata {                                  定义资源名称也是唯一的，不能相同
          on ning {             
          device   /dev/drbd1;                            指定drdb设备名称为drbd1
          disk       /dev/sda4;                           定义的分区磁盘
          address 172.16.3.1:7790;                        两个资源之间不能使用相同的端口号
          meta-disk internal;
            }
          on hong {                
          device   /dev/drbd1;
          disk       /dev/sda4;
          address 172.16.3.2:7790;  
          meta-disk internal;
            }
        }
        [[email protected] drbd.d]# scp mydata.res 172.16.3.1:/etc/drbd.d/     双方节点上都需要配置这样复制过去即可
        [email protected]‘s password:
        mydata.res

100%  278     0.3KB/s   00:00
    3、初始化drbd在两节点上都需要初始化，并启动drbd
        [[email protected] drbd.d]# drbdadm create-md mydata
        Writing meta data...
        initializing activity log
        NOT initializing bitmap
        New drbd meta data block successfully created.
        [[email protected] ~]#  drbdadm create-md mydata
        Writing meta data...
        initializing activity log
        NOT initializing bitmap
        New drbd meta data block successfully created.
        [[email protected] drbd.d]# service drbd start
        [[email protected] ~]# service drbd start

4、提升一个节点为主节点进行分区数据同步和格式化分区

[[email protected] drbd.d]# drbd-overview （查看当前状态）
      0:web/0     Connected Secondary/Secondary UpToDate/UpToDate         C r-----
      1:mydata/0  Connected Secondary/Secondary Inconsistent/Inconsistent C r----- （分区还没有进行同步，数据不一致状态）
    [[email protected] drbd.d]# drbdadm primary --force mydata   （提升hong节点为主节点，进行数据同步，并进行格式化）
    [[email protected] drbd.d]# drbd-overview
      0:web/0     Connected  Secondary/Secondary UpToDate/UpToDate     C r-----
      1:mydata/0  SyncSource Primary/Secondary   UpToDate/Inconsistent C r---n-
        [>....................] sync‘ed:  4.3% (4912/5128)M   （正在同步块按照位在对齐）
    [[email protected] drbd.d]# drbd-overview
      0:web/0     Connected Secondary/Secondary UpToDate/UpToDate C r-----
      1:mydata/0  Connected Primary/Secondary   UpToDate/UpToDate C r----- （分区同步完成）
    [[email protected] ~]# mke2fs -t ext4 /dev/drbd1    （对分区进行格式化）
        mke2fs 1.41.12 (17-May-2010)
        Filesystem label=
        OS type: Linux
        Block size=4096 (log=2)
        Fragment size=4096 (log=2)
        Stride=0 blocks, Stripe blocks
        328656 inodes, 1313263 blocks
        65663 blocks (5.00%) reserved for the super user
        First data block=0
        Maximum filesystem blocks=1346371584
        41 block groups
        32768 blocks per group, 32768 fragments per group
        8016 inodes per group
        Superblock backups stored on blocks:
            32768, 98304, 163840, 229376, 294912, 819200, 884736

Writing inode tables: done                           
        Creating journal (32768 blocks): done
        Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 39 mounts or
        180 days, whichever comes first.  Use tune2fs -c or -i to override.
mysql配置：
    1、创建mysql用户（注意两节点的mysql的ID号要一致）
     hong节点：
        [[email protected] drbd.d]# groupadd -r -g 306 mysql
        [[email protected] drbd.d]# useradd -r -g 306 -u 306  mysql
        [[email protected] drbd.d]# id mysql
        uid=306(mysql) gid=306(mysql) groups=306(mysql)
        [[email protected] ~]# mkdir /mydata     创建数据的存储目录

ning节点：
        [[email protected] ~]# groupadd -r -g 306 mysql
        [[email protected] ~]# useradd -r -g 306 -u 306 mysql
        [[email protected] ~]# id mysql
        uid=306(mysql) gid=306(mysql) groups=306(mysql)
        [[email protected] ~]# mkdir /mydata     创建数据的存储目录（磁盘的挂载点）

2、安装mysql

（1）在主节点hong上挂载/dev/drbd1到数据的存储目录/mydata
            [[email protected] ~]# mount /dev/drbd1 /mydata/
        （2）在挂载目录/mydata下创建数据存储目录为data，并设置属主组
            [[email protected] ~]# cd /mydata/
            [[email protected] mydata]# mkdir data
            [[email protected] mydata]# chown -R mysql.mysql data
            [[email protected] mydata]# ll
            total 20
            drwxr-xr-x 2 mysql mysql  4096 Aug 16 17:21 data
            drwx------ 2 root  root  16384 Aug 16 17:16 lost+found
            验证下是否两节点都是有data目录的
                [[email protected] ~]# umount /mydata
                [[email protected] ~]# drbdadm secondary mydata         在hong上降级drbd为从节点
                [[email protected] ~]# drbd-overview
                  0:web/0     Connected Secondary/Secondary UpToDate/UpToDate C r-----
                  1:mydata/0  Connected Secondary/Secondary UpToDate/UpToDate C r-----
                [[email protected] ~]# drbdadm primary mydata      在ning节点上提升为主节点
                [[email protected] ~]# drbd-overview
                  0:web/0     Connected Secondary/Secondary UpToDate/UpToDate C r-----
                  1:mydata/0  Connected Primary/Secondary   UpToDate/UpToDate C r-----
                [[email protected] ~]# mount /dev/drbd1 /mydata/
                [[email protected] ~]# cd /mydata/
                [[email protected] mydata]# ll
                total 20
                drwxr-xr-x 2 mysql mysql  4096 Aug 16 17:21 data     （查看是否data目录为mysql属主组）
                drwx------ 2 root  root  16384 Aug 16 17:16 lost+found
        （3）安装mysql软件
                包： mariadb-5.5.36-linux-x86_64.tar.gz
            ning节点上：
                [[email protected] ~]# tar xf mariadb-5.5.36-linux-x86_64.tar.gz -C /usr/local
                [[email protected] ~]# cd /usr/local
                [[email protected] local]# ln -sv mariadb-5.5.36-linux-x86_64/ mysql
                `mysql‘ -> `mariadb-5.5.36-linux-x86_64/‘
                [[email protected] local]# chown -R root.mysql mysql/*
                [[email protected] local]# cd mysql
                [[email protected] mysql]# scripts/mysql_install_db --datadir=/mydata/data/ --user=mysql

[[email protected] mysql]# mkdir /etc/mysql
                [[email protected] mysql]# cp  support-files/my-large.cnf /etc/mysql/my.cnf
                [[email protected] mysql]# vim /etc/mysql/my.cnf
                [mysqld]
                datadir = /mydata/data
                [[email protected] mysql]# cp  support-files/my-large.cnf /etc/mysql/my.cnf
                [[email protected] mysql]# vim /etc/mysql/my.cnf
                [[email protected] mysql]# vim /etc/mysql/my.cnf
                [[email protected] mysql]# cp support-files/mysql.server /etc/rc.d/init.d/mysqld
                [[email protected] mysql]# chmod +x /etc/rc.d/init.d/mysqld
                [[email protected] mysql]# chkconfig --add mysqld
                [[email protected] mysql]# chkconfig mysqld off
                [[email protected] mysql]# service mysqld start
                Starting MySQL....                                         [  OK  ]
                [[email protected] mysql]# ls /mydata/data
                aria_log.00000001  ibdata1      ib_logfile1  mysql-bin.000001  ning.pid            test
                aria_log_control   ib_logfile0  mysql        mysql-bin.index   performance_schema
                [[email protected] mysql]# /usr/local/mysql/bin/mysql
                Welcome to the MariaDB monitor.  Commands end with ; or \g.
                Your MariaDB connection id is 2
                Server version: 5.5.36-MariaDB-log MariaDB Server

Copyright (c) 2000, 2014, Oracle, Monty Program Ab and others.

Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement.

MariaDB [(none)]> create database mysdb;
                Query OK, 1 row affected (0.00 sec)

MariaDB [(none)]> \q
                Bye
                到这里mariadb数据库已经安装完成
                [[email protected] mysql]# service mysqld stop
                Shutting down MySQL.                                       [  OK  ]
                [[email protected] mysql]# cd
                [[email protected] ~]# umount /dev/drbd1                                       卸载挂载点
                [[email protected] ~]# drbdadm secondary mydata                                降级为从节点
                [[email protected]ng ~]# drbd-overview
                  0:web/0     Connected Secondary/Secondary UpToDate/UpToDate C r-----
                  1:mydata/0  Connected Secondary/Secondary UpToDate/UpToDate C r-----
                [[email protected] ~]# scp mariadb-5.5.36-linux-x86_64.tar.gz 172.16.3.2:/root   复制包到ning节点，进行安装
                [email protected]‘s password:
                mariadb-5.5.36-linux-x86_64.tar.gz                                              100%  212MB  26.5MB/s   00:08  
        hong节点：
                [[email protected] ~]# drbdadm primary mydata        提升hong节点为主节点
                [[email protected] ~]# mount /dev/drbd1 /mydata      挂载分区
                [[email protected] ~]# scp -r 172.16.3.1:/etc/mysql /etc/              并复制ning节点上的mysqld配置文件，（因为配置文件是一样的）
                [email protected]‘s password:
                my.cnf                                                                          100% 4924     4.8KB/s   00:00
                [[email protected] ~]# tar xf mariadb-5.5.36-linux-x86_64.tar.gz -C /usr/local
                [[email protected] ~]# cd /usr/local
                [[email protected] local]# ln -sv mariadb-5.5.36-linux-x86_64/ mysql
                `mysql‘ -> `mariadb-5.5.36-linux-x86_64/‘
                [[email protected] local]# cd mysql
                [[email protected] mysql]# chown -R root.mysql ./*
                这里说明下，不需要对mariadb做初始化了，因为数据已经有了，在ning节点上做的。在这里只需要提供服务启动脚本即可
                [[email protected] mysql]# cp support-files/mysql.server /etc/rc.d/init.d/mysqld
                [[email protected] mysql]# chmod +x /etc/rc.d/init.d/mysqld
                [[email protected] mysql]# chkconfig --add mysqld
                [[email protected] mysql]# service mysqld start
                Starting MySQL....                                         [  OK  ]
                [[email protected] mysql]# /usr/local/mysql/bin/mysql
                Welcome to the MariaDB monitor.  Commands end with ; or \g.
                Your MariaDB connection id is 2
                Server version: 5.5.36-MariaDB-log MariaDB Server

Copyright (c) 2000, 2014, Oracle, Monty Program Ab and others.

Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement.

MariaDB [(none)]> show databases;        查看在ning节点上创建的数据库是存在的
                +--------------------+
                | Database           |
                +--------------------+
                | information_schema |
                | mysdb              |     看这里呵呵
                | mysql              |
                | performance_schema |
                | test               |
                +--------------------+
                5 rows in set (0.05 sec)
                MariaDB [(none)]> grant all on *.* to [email protected]‘172.16.%.%‘ identified by ‘ning‘;    授权远程连接用户
                Query OK, 0 rows affected (0.03 sec)

MariaDB [(none)]> flush privileges;
                Query OK, 0 rows affected (0.00 sec)
        测试下是否能够连接上数据库：（随便找个节点上测试的（这节点上需要有mysql客户端））
            [[email protected] ~]# mysql -uroot -h 172.16.3.2 -p
            Enter password:
            Welcome to the MySQL monitor.  Commands end with ; or \g.
            Your MySQL connection id is 4
            Server version: 5.5.36-MariaDB-log MariaDB Server

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 |
            | mysdb              |
            | mysql              |    这里可以看到创建的数据库
            | performance_schema |
            | test               |
            +--------------------+
            5 rows in set (0.00 sec)

mysql> \q
            Bye
        （4）测试完成后，在两节点上关闭mysqld和drbd开始配置corosync
                [[email protected] mysql]# service mysqld stop
                Shutting down MySQL.                                       [  OK  ]
                [[email protected] mysql]# umount /mydata
                [[email protected] mysql]# drbdadm secondary mydata
                [[email protected] mysql]# service drbd stop
                Stopping all DRBD resources: .
                [[email protected] ~]# service drbd stop
                Stopping all DRBD resources: .
配置corosync集群设置
        1、定义drbd
            [[email protected] ~]# crm
            crm(live)# configure
            定义drbd资源
            crm(live)configure# primitive mydrbd ocf:linbit:drbd params drbd_resource=mydata op monitor role=Master interval=10s timeout=20s op monitor role=Slave interval=20s timeout=30s op start timeout=240s op stop timeout=100s
                注意下定义时间间隔的时候主从不能一样。
            crm(live)configure# verify
            定义drbd克隆资源
            crm(live)configure# master ms_mydrbd mydrbd meta master-max=1 master-node-max=1 clone-max=2 clone-node-max=1 notify=True
            crm(live)configure# verify
            定义挂载磁盘资源
            crm(live)configure# primitive myfs ocf:heartbeat:Filesystem params device=/dev/drbd1 directory=/mydata fstype=ext4 op monitor interval=20s timeout=60s op start timeout=60s op stop timeout=60s
            crm(live)configure# verify
            定义mysqlIP资源
            crm(live)configure# primitive myip ocf:heartbeat:IPaddr params ip=172.16.3.101 op monitor interval=30s timeout=20s
            crm(live)configure# verify
            定义mysql服务启动资源
            crm(live)configure# primitive myserver lsb:mysqld op monitor interval=30s timeout=20s
            crm(live)configure# verify
            定义规则
            crm(live)configure# group myservice myip myfs myserver    定义组名称为myservice资源名称为myip\myfs\myserver
            crm(live)configure# colocation myfs_with_ms_mydrbd_master inf: myfs ms_mydrbd:Master   定义myfs挂载磁盘资源一定和ms_mydrbd克隆资源在一起
            crm(live)configure# verify
            crm(live)configure# order myfs_after_ms_mydrbd_master mandatory: ms_mydrbd:promote myfs:start    定义启动顺序挂载磁盘my_fs一定在克隆资源（成为主节点）ms_mydrbd之后启动
            crm(live)configure# colocation myserver_with_myfs inf: myserver myfs        定义mysql服务器启动一定要和挂载磁盘my_fs在一起
            crm(live)configure# verify
            crm(live)configure# commit
            crm(live)# status     (查看状态信息)                                  
            Last updated: Fri Sep 19 13:16:37 2014
            Last change: Fri Sep 19 12:26:20 2014 via cibadmin on hong
            Stack: classic openais (with plugin)
            Current DC: ning - partition with quorum
            Version: 1.1.10-14.el6-368c726
            2 Nodes configured, 2 expected votes
            5 Resources configured

Online: [ hong ning ]        （两个节点都在线）

Master/Slave Set: ms_mydrbd [mydrbd]
                 Masters: [ ning ]
                 Slaves: [ hong ]
             Resource Group: myservice
                 myip    (ocf::heartbeat:IPaddr):    Started ning
                 myfs    (ocf::heartbeat:Filesystem):    Started ning
                 myserver    (lsb:mysqld):    Started ning
测试corosync+mariadb+drbd
    1、测试是否ning节点下线，资源将被切换到hong节点上去
        [[email protected] ~]# crm node standby     让ning节点下线
        [[email protected] ~]# crm status
        Last updated: Fri Sep 19 13:24:33 2014
        Last change: Fri Sep 19 13:24:25 2014 via crm_attribute on ning
        Stack: classic openais (with plugin)
        Current DC: ning - partition with quorum
        Version: 1.1.10-14.el6-368c726
        2 Nodes configured, 2 expected votes
        5 Resources configured

Node ning: standby
        Online: [ hong ]

Master/Slave Set: ms_mydrbd [mydrbd]
             Masters: [ hong ]          drbd将自动切换到hong节点上
             Stopped: [ ning ]
         Resource Group: myservice
             myip    (ocf::heartbeat:IPaddr):    Started hong
             myfs    (ocf::heartbeat:Filesystem):    Started hong
             myserver    (lsb:mysqld):    Started hong   
    在hong 节点查看下mysqlIP；
        [[email protected] ~]# ip addr show
        1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
            link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
            inet 127.0.0.1/8 scope host lo
            inet6 ::1/128 scope host
               valid_lft forever preferred_lft forever
        2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
            link/ether 00:0c:29:d7:f7:9c brd ff:ff:ff:ff:ff:ff
            inet 172.16.3.2/16 brd 172.16.255.255 scope global eth0
            inet 172.16.3.101/16 brd 172.16.255.255 scope global secondary eth0     这里是有mysqlIP
            inet6 fe80::20c:29ff:fed7:f79c/64 scope link
               valid_lft forever preferred_lft forever
    在liang节点上尝试连接下mariadb
        [[email protected] ~]# mysql -uroot -h 172.16.3.101 -p   这里连接的mysqlIP的地址
        Enter password:
        Welcome to the MySQL monitor.  Commands end with ; or \g.
        Your MySQL connection id is 4
        Server version: 5.5.36-MariaDB-log MariaDB Server

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 |
        | mysdb              |这里有我们在上面测试用到的mysdb
        | mysql              |  
        | performance_schema |
        | test               |
        +--------------------+
        5 rows in set (0.10 sec)
    2、测试mysqld手动当掉，是否会自动启动？
        # service mysqld stop
        # ss -tnl 观察3306端口将会看到30s后会自动上线

时间： 2024-10-24 20:17:53

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