heartbeat 编译安装配置
一、heartbeat介绍heartbeat是HA高可用集群的一个重要组件,heartbeat实现了资源转移和心跳信息传递。它的常用组合方式为heartbeat v1,heartbeat v2+crm,heartbeat v3 + pacemaker,目前版本为v3版本。
二、编译前准备
heartbeat官方站点http://hg.linux-ha.org/
Cluster Glue官方站点https://github.com/ClusterLabs/cluster-glue
Resource Agents官方站点 https://github.com/ClusterLabs/resource-agents
node1:192.168.0.15
node2:192.168.0.16
配置集群前提:
(1)各节点时间一致,便于心跳信息传递,使用ntp实现
(2)节点间需要通过主机名互相通信,必须解析主机至IP地址
(a)建议名称解析功能使用hosts文件来实现
(b)通信中使用的名字与节点名字必须保持一致 “uname -n” 或hostname展示出的名字保持一致
(3)考虑仲裁设备是否会用到
(4)建立各节点之间的root用户能够给予密钥认证
(5)定义为集群中的资源,不能开机启动
#使用ntpdate命令同步时间,并建立周期性任务
#可使用任意节点服务器作为ntp时间服务器,如各节点可上公网,可直接指定公网ntp服务器
1、安装ntp
# yum install -y ntp
# vim /etc/ntp.conf #修改配置文件允许本网段客户端获取地址
将下面的语句
restrict default kod nomodify notrap nopeer noquery
修改为
restrict default nomodify
restrict 192.168.0.0 mask 255.255.255.0 nomodify
# service ntpd start
Starting ntpd:
查看同步过程
# ntpq -p
remote refid st t when poll reach delay offsetjitter
==============================================================================
*202.118.1.81 202.118.1.47 2 u 30 64 1 92.249 8.602 0.714
202.112.31.197.INIT. 16 u - 64 0 0.000 0.000 0.000
2、客户端创建周期任务,每3秒同步时间
# crontab -e
*/3 * * * * /usr/sbin/ntpdate 192.168.0.16 &> /dev/null
# service crond start
#手动同步成功,因ntp一般为自动,手动前kill掉所有ntp进程即可
# ntpdate 192.168.0.16
14 Nov 20:26:09 ntpdate: adjust time server 192.168.0.16 offset -0.004440 sec
3、时间同步
# date; ssh 192.168.0.15 'date'
Mon Nov 14 20:36:17 CST 2016
root@192.168.0.15's password:
Mon Nov 14 20:36:20 CST 2016
# vim /etc/hosts
192.168.0.15 node1
192.168.0.16 node2
1、生成密钥对
# 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:
a8:ad:2c:23:83:60:ff:36:73:9d:09:24:37:ae:da:c9 root@centfils
The key's randomart image is:
+--[ RSA 2048]----+
| |
| |
| |
| . = |
| * S |
|.. o o |
|+ . . o o o |
|+ ooo*.. + |
| o +*E+ |
+-----------------+
2、把公钥传输至远程服务器对应用户的家目录
# ssh-copy-id -i .ssh/id_rsa.pub root@192.168.0.16
The authenticity of host '192.168.0.16 (192.168.0.16)' can't be established.
RSA key fingerprint is e5:84:6c:f7:c0:60:3d:0b:39:b6:1e:12:0d:48:8b:07.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.0.16' (RSA) to the list of known hosts.
root@192.168.0.16's password:
Now try logging into the machine, with "ssh 'root@192.168.0.16'", and check in:
.ssh/authorized_keys
to make sure we haven't added extra keys that you weren't expecting.
3、测试
# date; ssh root@192.168.0.15 'date'
Mon Nov 14 21:02:30 CST 2016
Mon Nov 14 21:02:30 CST 2016
三、编译安装
1、安装依赖包(node1和node2同步安装)
# yum -y install autoconf automake gcc-c++ asciidoc libxslt-devel libtool libtool-ltdl-devel libxml2 libxml2-devel bzip2-devel glib2-devel mercurial *openssl* net-snmp OpenIPMI flex bison e2fsprogs-devel 2、源码编译安装
下载地址http://linux-ha.org/wiki/Download
#下载heartbeat
# wget http://hg.linux-ha.org/heartbeat-STABLE_3_0/archive/958e11be8686.tar.bz2
#下载cluster glue
# wget http://hg.linux-ha.org/glue/archive/0a7add1d9996.tar.bz2
#下载cluster resource agents 注意:需要***
# wget https://github.com/ClusterLabs/resource-agents/archive/v3.9.6.tar.gz 3、创建用户与组
# groupadd haclient
# useradd -g haclient hacluster -M -s /sbin/nologin 4、编译
cluster glue
# tar xf 0a7add1d9996.tar.bz2
# cd Reusable-Cluster-Components-glue--0a7add1d9996/
# ./autogen.sh
]# ./configure --prefix=/usr/local/heartbeat --sysconfdir=/etc/heartbeat libdir=/usr/local/heartbeat/lib64 LIBS='/lib64/libuuid.so.1' --with-daemon-user=hacluster --with-daemon-group=haclient
#LIBS如果是32位系统自行更改
]# make && make install
resource agents
# tar xf resource-agents-3.9.6.tar.gz
# cd resource-agents-3.9.6
# ./autogen.sh
# ./configure --prefix=/usr/local/heartbeat --sysconfdir=/etc/heartbeat libdir=/usr/local/heartbeat/lib64 CFLAGS=-I/usr/local/heartbeat/include LDFLAGS=-L/usr/local/heartbeat/lib64 LIBS='/lib64/libuuid.so.1' --with-daemon-user=hacluster --with-daemon-group=haclient
# make && make install
heartbeat
# tar xf 958e11be8686.tar.bz2
# cd Heartbeat-3-0-958e11be8686/
# ./bootstrap
]# ./configure --prefix=/usr/local/heartbeat --sysconfdir=/etc/heartbeat CFLAGS=-I/usr/local/heartbeat/include LDFLAGS=-L/usr/local/heartbeat/lib64 LIBS='/lib64/libuuid.so.1' --with-daemon-user=hacluster --with-daemon-group=haclient
#编译报错,路径重复,google后得出删除 glue_config.h 中配置文件路径即可
# make && make install
../include/config.h:390:1: error: this is the location of the previous definition
gmake: *** Error 1
gmake: Leaving directory `/root/Heartbeat-3-0-958e11be8686/replace'
make: *** Error 1
# vim /usr/local/heartbeat/include/heartbeat/glue_config.h
define HA_HBCONF_DIR "/usr/local/heartbeat/etc/ha.d/"
#删除最后一行即上行内容 5、复制配置文件至/etc//heartbeat/ha.d中
# cp doc/ha.cf /etc/heartbeat/ha.d/
# cp doc/haresources /etc/heartbeat/ha.d/
# cp doc/authkeys /etc/heartbeat/ha.d/ 6、将heartbeat加入系统服务,并开机启动
# chkconfig --add heartbeat
#之后可以用service来进行start|stop操作了
# chkconfig heartbeat on 7、修改认证文件权限为600,不然heartbeat无法工作
# chmod 600/etc/heartbeat/ha.d/authkeys 8、为resource-agents建立脚本软连接
# ln -s /usr/local/heartbeat/usr/lib/ocf /usr/lib/ocf
四、配置文件
1、配置authkeys文件,指明启用何种算法,使用何种密钥,本文件须更改权限为400
auth 2
#1 crc
2 sha1 2SIEok+gXAvB6G4seA8mhw
#3 md5 Hello!
生成随机字符串作为密钥
# openssl rand -base64 16
2SIEok+gXAvB6G4seA8mhw==
2、配置ha.cf文件,定义高可用集群的基本工作方式
定义日志文件位置(二选一) logfacility为将日志交由syslog管理
logfile /var/log/ha-log
#logfacility local0
多长时间发送一次心跳信息,默认为2秒
#keepalive 2
多长时间宣布某节点死亡,默认30秒
#deadtime 30
多长时间警告对方心跳信息延迟了,默认10秒
#warntime 10
第一次死去时间,避免因网络问题导致宣布死亡
#initdead 120
使用udp694端口传递心跳,并选择哪种方式传递心跳
#udpport 694
串行线缆传递心跳
#serial /dev/ttyS0 # Linux
#serial /dev/cuaa0 # FreeBSD
#serial /dev/cuad0 # FreeBSD 6.x
#serial /dev/cua/a # Solaris
串行线缆的工作频率
#baud 19200
广播传递心跳
#bcasteth0 # Linux
#bcasteth1 eth2 # Linux
#bcastle0 # Solaris
#bcastle1 le2 # Solaris
多播传递心跳,网卡必须支持多播,ifconfig | grep MULTICAST
mcast eth0 225.0.0.1 694 1 0 #端口694,TTL为1,不允许回传为0
#启用网卡支持多播
# ip link set eth0 multicast on
单薄传递心跳
#ucast eth0 192.168.1.2
自动故障转回
auto_failback on
指明节点
#node ken3
#node kathy
node node1
node node2
指明网关为ping node设备(仲裁设备)
#ping 10.10.10.254
ping 192.168.0.1
指明一个组为ping node设备(仲裁设备)
#ping_group group1 10.10.10.254 10.10.10.253
指明节点间传送的压缩算法
compression bz2
指明节点间传送数据压缩的最小数据为2KB
compression_threshold 2
3、配置haresources文件,定义集群资源
直接加入资源
node1 192.168.0.17/24/eth0/192.168.0.255 httpd
4、将httpd设置为开机不启动
# chkconfig httpd off
5、启动服务
# service heartbeat start
以上所有配置均所有节点一致
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