Linux HA Cluster的实例演示（2）

一、实验环境

node1:192.168.194.131

node2:192.168.194.132

NFS服务器与仲裁设备：192.168.194.129

VIP:192.168.194.140

二、相关准备工作

1、配置host文件使节点间可通过主机名通信

node1节点配置

[root@node1 ~]# cat /etc/hosts

127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4

::1 localhost localhost.localdomain localhost6 localhost6.localdomain6

192.168.194.131 node1.cwc.com node1

192.168.194.132 node2.cwc.com node2

[root@node1 ~]# ping node2

PING node2.cwc.com (192.168.194.132) 56(84) bytes of data.

64 bytes from node2.cwc.com (192.168.194.132): icmp_seq=1 ttl=64 time=3.10 ms

64 bytes from node2.cwc.com (192.168.194.132): icmp_seq=2 ttl=64 time=0.645 ms

64 bytes from node2.cwc.com (192.168.194.132): icmp_seq=3 ttl=64 time=0.460 ms

node2节点配置

[root@node2 ~]# cat /etc/hosts

127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4

::1 localhost localhost.localdomain localhost6 localhost6.localdomain6

192.168.194.132 node2.cwc.com node2

192.168.194.131 node1.cwc.com node1

[root@node2 ~]# ping node1

PING node1.cwc.com (192.168.194.131) 56(84) bytes of data.

64 bytes from node1.cwc.com (192.168.194.131): icmp_seq=1 ttl=64 time=0.451 ms

64 bytes from node1.cwc.com (192.168.194.131): icmp_seq=2 ttl=64 time=0.495 ms

64 bytes from node1.cwc.com (192.168.194.131): icmp_seq=3 ttl=64 time=0.494 msms

2、ssh到相关节点通过root账号基于秘钥认证；

node1节点配置

[root@node1 ~]# ssh-keygen -t rsa

Generating public/private rsa key pair.

Enter file in which to save the key (/root/.ssh/id_rsa):

Enter passphrase (empty for no passphrase):

Enter same passphrase again:

Your identification has been saved in /root/.ssh/id_rsa.

Your public key has been saved in /root/.ssh/id_rsa.pub.

The key fingerprint is:

23:3a:bf:f6:1f:6d:42:ae:2a:4b:92:eb:14:1e:2d:af root@node1.cwc.com

The key's randomart image is:

+--[ RSA 2048]----+

| |

| . |

| + . . S . |

| . * . . + . |

| = = + o |

| . =.o. . + |

| .E .+++o.. |

+-----------------+

[root@node1 ~]# ssh-copy-id -i /root/.ssh/id_rsa.pub root@node2

The authenticity of host 'node2 (192.168.194.132)' can't be established.

RSA key fingerprint is dd:4a:08:9a:15:cc:16:57:2a:4a:8f:73:8e:57:9b:cc.

Are you sure you want to continue connecting (yes/no)? yes

Warning: Permanently added 'node2,192.168.194.132' (RSA) to the list of known hosts.

root@node2's password:

Now try logging into the machine, with "ssh 'root@node2'", and check in:

.ssh/authorized_keys

to make sure we haven't added extra keys that you weren't expecting.

[root@node1 ~]# ssh node2

Last login: Tue Oct 27 19:50:41 2015 from node1.cwc.com

[root@node2 ~]# exit

node2节点配置

[root@node2 ~]# ssh node1

Last login: Tue Oct 27 19:58:45 2015 from node2.cwc.com

[root@node1 ~]# exit

3、配置节点间时间同步

node1节点配置

[root@node1 ~]# rpm -qa | grep ntp

ntpdate-4.2.6p5-1.el6.centos.x86_64

fontpackages-filesystem-1.41-1.1.el6.noarch

ntp-4.2.6p5-1.el6.centos.x86_64

[root@node1 ~]# ntpdate cn.pool.ntp.org #更新ntp服务器时间

27 Oct 20:08:19 ntpdate[3048]: step time server 202.112.29.82 offset -12.788115 sec

[root@node1 ~]# crontab -e #创建同步ntp服务器的任务计划

*/2 * * * * /usr/sbin/ntpdate cn.pool.ntp.org &> /dev/null

node2节点配置

[root@node2 ~]# rpm -qa | grep ntp

fontpackages-filesystem-1.41-1.1.el6.noarch

ntp-4.2.4p8-3.el6.centos.x86_64

ntpdate-4.2.4p8-3.el6.centos.x86_64

[root@node2 ~]# ntpdate cn.pool.ntp.org

27 Oct 20:12:09 ntpdate[3147]: step time server 202.112.29.82 offset -13.179396 sec

[root@node2 ~]# date; ssh node1 date

Tue Oct 27 20:12:45 CST 2015

[root@node2 ~]# crontab -e

*/2 * * * *　/usr/sbin/ntpdate cn.pool.ntp.org &> /dev/null

4、考虑是否用到仲裁设备

[root@node1 ~]# ping 192.168.194.129

PING 192.168.194.129 (192.168.194.129) 56(84) bytes of data.

64 bytes from 192.168.194.129: icmp_seq=1 ttl=64 time=2.57 ms

64 bytes from 192.168.194.129: icmp_seq=2 ttl=64 time=0.586 ms

[root@node2 ~]# ping 192.168.194.129

PING 192.168.194.129 (192.168.194.129) 56(84) bytes of data.

64 bytes from 192.168.194.129: icmp_seq=1 ttl=64 time=1.46 ms

64 bytes from 192.168.194.129: icmp_seq=2 ttl=64 time=0.812 ms

64 bytes from 192.168.194.129: icmp_seq=3 ttl=64 time=0.646 ms

三、配置演示测试环境1---->hrartbeat v1+haresources

1、测试每个节点httpd能否正常运行并关闭开机启动

[root@node1 ~]# curl http://node1.cwc.com; ssh node2 curl http://node2.cwc.com

<h1>node1.cwc.com</h1>

% Total % Received % Xferd Average Speed Time Time Time Current

Dload Upload Total Spent Left Speed

0 23 0 23 0 0 5419 0 --:--:-- --:--:-- --:--:-- 0

<h1>node2.cwc.com</h1>

[root@node1 ~]# service httpd stop ; ssh node2 service httpd stop

Stopping httpd: [ OK ]

[root@node1 ~]# chkconfig httpd off; ssh node2 chkconfig httpd off #关闭开机启动

2、安装HA heartbeat 高可用软件并配置

（1）安装相关软件包及依赖包

[root@node1 ~]# yum install net-snmp-libs libnet PyXML #提醒libnet是在epel源中才有

[root@node1 heartbeat2]

# rpm -ivh heartbeat-2.1.4-12.el6.x86_64.rpm heartbeat-pils-2.1.4-12.el6.x86_64.rpm heartbeat-stonith-2.1.4-12.el6.x86_64.rpm

Preparing... ########################################### [100%]

1:heartbeat-pils ########################################### [ 33%]

2:heartbeat-stonith ########################################### [ 67%]

3:heartbeat ########################################### [100%]

# node2节点做同样配置

（2）配置heartbeat+haresourxes

说明：Heartbeat主要3个配置文件：ha.cf,authkeys,haresources,需要放置在/etc/ha.d 目录下，但默认这三个文件是在/usr/share/doc/heartbeat-2.1.4/下面

ha.cf: 主配置文件，定义各节点上的heartbeat HA集群的基本属性；
authkeys：集群内节点间彼此传递消息时使用加密算法及密钥；
haresources: 为heartbeat v1提供资源管理器配置接口；v1版本专用的配置接口

authkeys文件配置

[root@node1 ha.d]# openssl rand -base64 8 #生成随机数

r5K5w1/SZFY=

[root@node1 ha.d]# vim authkeys

auth 2 # 选中秘钥认证方式

#1 crc

#2 sha1 HI!

#3 md5 Hello!

2 sha1 r5K5w1/SZFY=

[root@node1 ha.d]# chmod 600 authkeys

[root@node1 ha.d]# ls -l

total 48

-rw------- 1 root root 664 Oct 28 11:26 authkeys

ha.cf文件配置

[root@node1 ha.d]# egrep -v "(#|^$)" ha.cf

logfile /var/log/ha-log

#heartbeat的ha-log存放位置，默认开启的是logfacility发送给syslog，

#可通过vim /etc/rsyslog.conf 添加 local.* /var/log/heartbeat.log

keepalive 2 # 配置默认2秒发送一次心跳信息

deadtime 30 # 配置节点挂掉的时间,默认是30秒

warntime 10 # 警告时间，2秒探测一次，如果10秒后还收不到心跳信息，日志开始报警

udpport 694 # heartbeat默认使用UDP端口，端口号694

mcast eth0 225.0.0.1 694 1 0 # 心跳信息使用UPD多播传递，TTL=1 loop=0（不允许出路由器），

auto_failback on # 设置定义主节点是否在故障恢复后，将资源从备份节点收回重新接管

node node1.cwc.com # 节点名称，必须与uname -r 一致

node node2.cwc.com

ping 192.168.194.130 #选中ping 作为仲裁

说明：1、ha.cf中compression bz2表示对传输数据进行压缩，compression_threshold 2表示小于2k不压缩

2、通过使用 ip link set eth0 multicast on|off 命令设置是否开启网卡组播功能

haresources文件配置

1 2	`[root@node1 ha.d]# vim haresources` `node1.cwc.com 192.168.194.140/24/eth0` `httpd`

说明： 1、VIP 为192.168.194.140，优先访问集群节点node1.cwc.com

2、如果节点node1掉线，资源会自动根据ha.cf的定义转移至node2，而当node1恢复正常后，会重新将集群资源接管，

将上面三个配置文件复制到node2节点

[root@node1 ha.d]# scp -p ha.cf haresources authkeys node2:/etc/ha.d

ha.cf 100% 10KB 10.3KB/s 00:00

haresources 100% 5950 5.8KB/s 00:00

authkeys 100% 664 0.7KB/s 00:00

3、启动heartbeat服务，测试相关功能

（1）测试通过vip地址能否访问node1的web界面

[root@node1 ha.d]# service heartbeat start ; ssh node2 service heartbeat start

Starting High-Availability services:

2015/10/28_12:55:57 INFO: Resource is stopped

Done.

Starting High-Availability services:

2015/10/28_12:55:56 INFO: Resource is stopped

Done.

[root@node1 ha.d]# ss -unlp

UNCONN 0 0 225.0.0.1:694 *:* users:(("heartbeat",36824,8),("heartbeat",36825,8))

UNCONN 0 0 *:33760 *:* users:(("heartbeat",36824,7),("heartbeat",36825,7))

[root@node1 ha.d]# ifconfig

eth0 Link encap:Ethernet HWaddr 00:0C:29:8E:50:22

inet addr:192.168.194.131 Bcast:192.168.194.255 Mask:255.255.255.0

inet6 addr: fe80::20c:29ff:fe8e:5022/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:99535 errors:0 dropped:0 overruns:0 frame:0

TX packets:68648 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:82927987 (79.0 MiB) TX bytes:6644571 (6.3 MiB)

eth0:0 Link encap:Ethernet HWaddr 00:0C:29:8E:50:22

inet addr:192.168.194.140 Bcast:192.168.194.255 Mask:255.255.255.0

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

（2）切换节点node1为备用节点，看资源是否转移都node2

[root@node1 ha.d]# /usr/lib64/heartbeat/hb_standby

2015/10/28_13:09:27 Going standby [all].

[root@node2 heartbeat2]# ifconfig # VIP已经转移到node2

eth0 Link encap:Ethernet HWaddr 00:0C:29:03:08:5B

inet addr:192.168.194.132 Bcast:192.168.194.255 Mask:255.255.255.0

inet6 addr: fe80::20c:29ff:fe03:85b/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:95527 errors:0 dropped:0 overruns:0 frame:0

TX packets:59057 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:87538256 (83.4 MiB) TX bytes:5573367 (5.3 MiB)

eth0:0 Link encap:Ethernet HWaddr 00:0C:29:03:08:5B

inet addr:192.168.194.140 Bcast:192.168.194.255 Mask:255.255.255.0

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

刷新页面后

此次heartbeat+haresources演示完成

四、配置演示测试环境1---->hrartbeat v2+CRM（lamp+wordpress）

目的：通过LAMP组合，基于heartbeat v2 crm实现HA；要求，部署wordpress，用于编辑的文章中的任何数据在节点切换后都能正常访问

说明：集群node相关信息引用上面资源

1、配置NFS服务器

（1）新建nfs文件夹及用户

[root@lamp ~]# mkdir /data/{webdoc,mydata} -pv

mkdir: created directory `/data/webdoc'

mkdir: created directory `/data/mydata'

[root@lamp ~]# groupadd -g 27 mysql

[root@lamp ~]# useradd -u 27 -g mysql -s /sbin/nologin mysql

[root@lamp ~]# id mysql

uid=27(mysql) gid=27(mysql) groups=27(mysql)

[root@lamp ~]# id apache

uid=48(apache) gid=48(apache) groups=48(apache)

# 要求NFS服务器上的mysql用户与node1，node2的mysql用户gid，uid必须保持一致

[root@node1 ha.d]# id mysql

uid=27(mysql) gid=27(mysql) groups=27(mysql)

[root@node1 ha.d]# id apache

uid=48(apache) gid=48(apache) groups=48(apache)

[root@node2 heartbeat2]# id mysql

uid=27(mysql) gid=27(mysql) groups=27(mysql)

[root@node2 heartbeat2]# id apache

uid=48(apache) gid=48(apache) groups=48(apache)

（2）配置nfs共享目录及用户权限

# 修改目录文件夹权限

[root@lamp data]# chown -R mysql.mysql mydata/

[root@lamp data]# chown -R apache.apache webdoc/

[root@lamp data]# ls -l

total 8

drwxr-xr-x 2 mysql mysql 4096 Oct 28 14:37 mydata

drwxr-xr-x 2 apache apache 4096 Oct 28 14:37 webdoc

# 设置NFS目录访问权限

[root@lamp data]# vim /etc/exports # 注意配置权限时IP属性与权限属性之间没有空格

/data/mydata 192.168.194.0/24(rw,sync,no_root_squash)

/data/webdoc 192.168.194.0/24(rw,sync,no_root_squash)

[root@lamp data]# service nfs restart

Shutting down NFS daemon: [ OK ]

Shutting down NFS mountd: [ OK ]

Shutting down NFS services: [ OK ]

Shutting down RPC idmapd: [ OK ]

Starting NFS services: [ OK ]

Starting NFS mountd: [ OK ]

Starting NFS daemon: [ OK ]

Starting RPC idmapd: [ OK ]

[root@lamp data]# exportfs -avr

exporting 192.168.194.0/24:/data/webdoc

exporting 192.168.194.0/24:/data/mydata

[root@lamp data]# rpcinfo -p localhost # 查看NFS 监听端口是否开启

program vers proto port service

100024 1 udp 30004 status

100024 1 tcp 30004 status

100005 1 udp 30003 mountd

100005 1 tcp 30003 mountd

100005 2 udp 30003 mountd

100005 2 tcp 30003 mountd

100005 3 udp 30003 mountd

100005 3 tcp 30003 mountd

100003 2 tcp 2049 nfs

100003 3 tcp 2049 nfs

100003 4 tcp 2049 nfs

100227 2 tcp 2049 nfs_acl

100227 3 tcp 2049 nfs_acl

100003 2 udp 2049 nfs

100003 3 udp 2049 nfs

100003 4 udp 2049 nfs

100227 2 udp 2049 nfs_acl

100227 3 udp 2049 nfs_acl

（3）下载wordpress 软件包解压到/data/webdoc

[root@lamp ~]# tar -zxvf wordpress-4.3.1-zh_CN.tar.gz -C /data/webdoc/

[root@lamp ~]# ls -l /data/webdoc/

total 4

drwxr-xr-x 5 nobody nfsnobody 4096 Sep 16 22:38 wordpress

[root@lamp webdoc]# chown apache.apache wordpress/

[root@lamp webdoc]# ls -l

total 4

drwxr-xr-x 5 apache apache 4096 Sep 16 22:38 wordpress

2、配置节点node1与node2挂载nfs目录，然后安装mysql

（1）测试各节点能否正常挂载

# 编辑mysql配置文件

[root@node1 ~]# vim /etc/my.cnf

[mysqld]

#datadir=/var/lib/mysql/

datadir=/data/mydata

socket=/var/lib/mysql/mysql.sock

user=mysql

# 测试node1能否挂载

[root@node1 ~]# service httpd status

httpd is stopped

[root@node1 data]# mount -t nfs -o vers=3 192.168.194.129:/data/mydata /data/mydata/

# 此时说明挂载时 使用nfs-ver3的版本，因为本机测试默认是挂载的ver4的版本，挂载后权限有问题

[root@node1 data]# mount -a

[root@node1 data]# mount

/dev/sda2 on / type ext4 (rw)

proc on /proc type proc (rw)

sysfs on /sys type sysfs (rw)

devpts on /dev/pts type devpts (rw,gid=5,mode=620)

tmpfs on /dev/shm type tmpfs (rw)

/dev/sda1 on /boot type ext4 (rw)

none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)

sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)

gvfs-fuse-daemon on /root/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev)

/dev/sr0 on /media/CentOS_6.4_Final type iso9660 (ro,nosuid,nodev,uhelper=udisks,uid=0,gid=0,iocharset=utf8,mode=0400,dmode=0500)

192.168.194.129:/data/mydata on /data/mydata type nfs (rw,vers=3,addr=192.168.194.129)

# 测试node2能否挂载

[root@node2 ~]# mount -t nfs -o vers=3 192.168.194.129:/data/mydata /data/mydata/

[root@node2 ~]# mount -t nfs -o vers=3 192.168.194.129:/data/webdoc /var/www/html/

[root@node2 ~]# mount -a

[root@node2 ~]# mount

/dev/sda2 on / type ext4 (rw)

proc on /proc type proc (rw)

sysfs on /sys type sysfs (rw)

devpts on /dev/pts type devpts (rw,gid=5,mode=620)

tmpfs on /dev/shm type tmpfs (rw)

/dev/sda1 on /boot type ext4 (rw)

none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)

sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)

gvfs-fuse-daemon on /root/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev)

/dev/sr0 on /media/CentOS_6.4_Final type iso9660 (ro,nosuid,nodev,uhelper=udisks,uid=0,gid=0,iocharset=utf8,mode=0400,dmode=0500)

192.168.194.129:/data/mydata on /data/mydata type nfs (rw,vers=3,addr=192.168.194.129)

192.168.194.129:/data/webdoc on /var/www/html type nfs (rw,vers=3,addr=192.168.194.129)

[root@node2 ~]# umount /data/mydata/

[root@node2 ~]# umount /var/www/html/

（2）在node1安装mysql，然后测试node2能否启动并连接及创建数据库

[root@node1 ~]# /usr/bin/mysql_install_db --user=mysql --datadir=/data/mydata/

Installing MySQL system tables...

OK

Filling help tables...

OK

To start mysqld at boot time you have to copy

support-files/mysql.server to the right place for your system

PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER !

To do so, start the server, then issue the following commands:

/usr/bin/mysqladmin -u root password 'new-password'

/usr/bin/mysqladmin -u root -h node1.cwc.com password 'new-password'

Alternatively you can run:

/usr/bin/mysql_secure_installation

which will also give you the option of removing the test

databases and anonymous user created by default. This is

strongly recommended for production servers.

See the manual for more instructions.

You can start the MySQL daemon with:

cd /usr ; /usr/bin/mysqld_safe &

You can test the MySQL daemon with mysql-test-run.pl

cd /usr/mysql-test ; perl mysql-test-run.pl

Please report any problems with the /usr/bin/mysqlbug script!

[root@node2 ~]# service mysqld start

Starting mysqld: [ OK ]

[root@node2 ~]# mysql

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 2

Server version: 5.1.73 Source distribution

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 |

| mysql |

| test |

+--------------------+

3 rows in set (0.09 sec)

mysql> create database cwcdb;

Query OK, 1 row affected (0.02 sec)

mysql> quit;

Bye

3、安装heartbeat-gui组件并进行图形化配置

（1）在node1与node2上分别安装heartbeat-gui的rpm包

[root@node1 heartbeat2]# ls -l

total 5708

-rw-r--r-- 1 root root 1420924 Oct 28 10:58 heartbeat-2.1.4-12.el6.x86_64.rpm

-rw-r--r-- 1 root root 3589552 Oct 28 10:58 heartbeat-debuginfo-2.1.4-12.el6.x86_64.rpm

-rw-r--r-- 1 root root 282836 Oct 28 10:58 heartbeat-devel-2.1.4-12.el6.x86_64.rpm

-rw-r--r-- 1 root root 168052 Oct 28 10:58 heartbeat-gui-2.1.4-12.el6.x86_64.rpm

-rw-r--r-- 1 root root 108932 Oct 28 10:58 heartbeat-ldirectord-2.1.4-12.el6.x86_64.rpm

-rw-r--r-- 1 root root 92388 Oct 28 10:58 heartbeat-pils-2.1.4-12.el6.x86_64.rpm

-rw-r--r-- 1 root root 166580 Oct 28 10:58 heartbeat-stonith-2.1.4-12.el6.x86_64.rp

[root@node1 heartbeat2]# rpm -ivh heartbeat-gui-2.1.4-12.el6.x86_64.rpm

[root@node2 ~]# rpm -ivh heartbeat-gui-2.1.4-12.el6.x86_64.rpm

（2）在node1上配置ha.cf文件并复制一份给node2

[root@node1 ~]# vim /etc/ha.d/ha.cf

crm on #加入到配置文件中

[root@node1 ~]# scp /etc/ha.d/ha.cf node2:/etc/ha.d/

ha.cf                                                         100%   10KB  10.3KB

/s

（3）启动heartbeat服务并进行图形化配置

# 检查节点node1，node2的服务有没有开机启动

[root@node1 ~]# chkconfig --list | egrep "(mysqld|httpd)"

httpd 0:off 1:off 2:off 3:off 4:off 5:off 6:off

mysqld 0:off 1:off 2:off 3:off 4:off 5:off 6:off

[root@node2 ~]# chkconfig --list | egrep "(mysqld|httpd)"

httpd 0:off 1:off 2:off 3:off 4:off 5:off 6:off

mysqld 0:off 1:off 2:off 3:off 4:off 5:off 6:off

[root@node1 heartbeat2]# service heartbeat start ; ssh node2 service heartbeat start

Starting High-Availability services:

Done.

Starting High-Availability services:

Done.

[root@node1 heartbeat2]# crm_mon # 查看各节点状态，15秒刷新一次

============

Last updated: Wed Oct 28 22:02:28 2015

Current DC: node2.cwc.com (fade8587-972e-4e7d-a831-c96968033547)

2 Nodes configured.

0 Resources configured.

============

Node: node2.cwc.com (fade8587-972e-4e7d-a831-c96968033547): online

Node: node1.cwc.com (bd636e6d-1d11-4dbb-b835-eb328ac8a84f): online

# 打开图形界面

[root@node1 heartbeat2]# tail /etc/passwd

ntp:x:38:38::/etc/ntp:/sbin/nologin

saslauth:x:498:76:"Saslauthd user":/var/empty/saslauth:/sbin/nologin

postfix:x:89:89::/var/spool/postfix:/sbin/nologin

pulse:x:497:496:PulseAudio System Daemon:/var/run/pulse:/sbin/nologin

sshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin

tcpdump:x:72:72::/:/sbin/nologin

yguser:x:500:500:yguser:/home/yguser:/bin/bash

apache:x:48:48:Apache:/var/www:/sbin/nologin

mysql:x:27:27:MySQL Server:/var/lib/mysql:/bin/bash

hacluster:x:496:493:heartbeat user:/var/lib/heartbeat/cores/hacluster:/sbin/nologin

# 必须先给hacluster用户设置密码

[root@node1 heartbeat2]# passwd hacluster

Changing password for user hacluster.

New password:

BAD PASSWORD: it is too simplistic/systematic

Retype new password:

passwd: all authentication tokens updated successfully.

[root@node1 ~]# /usr/bin/hb_gui & #启动gui图形窗口

4、图形界面通过CRM配置管理资源

（1）登入界面如下：

（2）通过CRM配置高可用资源

说明：此次演示高可用资源主要包括VIP，httpd，mysql，共享存储（通过nfs实现，包含web页面文件与mysql数据库文件）

配置：由于考虑资源粘性和资源约束，此次可使用资源组group来管理，此次组名设置为ID=wordpress

资源：VIP 资源名为webip

web页面文件资源名为nfs-wordpress

httpd 资源名为webserver

mysqld资源名为mysql

数据存储资源名为nfs-mysql

（a）新增资源组（wordpress）

（b）添加具体资源VIP，设置VIP地址为：192.168.194.140/24，ID=webip

通过上图的Add Parameter 按钮添加vip的其他参数

设置vip在哪个网口别名上

测试能否此webip资源能否正常启动
wepip已经在node2上正常运行

（c）按照以下顺序配置剩下资源：nfs-mysql,mysql,nfs-wordpress,httpd

最后添加完所有资源，然后开始运行，如下图：

5、测试wordpress能否正常登入并切换node1后能否正常打开node2创建的文章

（1）完成wordpress的数据库及网页配置

（2）测试能否创建文章并打开网页

（3）将后台资源切换到node1，看文章能否依然存在

此次LAMP+heartbeatV2+CRM演示完成

转载至http://blog.51cto.com/c616531043/1706888

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