一、基本了解

1、Hearbeat和keepalived区别
Keepalived使用的vrrp协议方式,虚拟路由冗余协议 (Virtual Router Redundancy Protocol,简称VRRP);
Heartbeat是基于主机或网络的服务的高可用方式;
keepalived的目的是模拟路由器的双机
heartbeat的目的是用户service的双机
lvs的高可用建议用keepavlived
业务的高可用用heartbeat
heartbeat有主备模式,双主模式

2、heartbeat 主要配置文件
ha.cf           参数配置文件
authkey        认证文件
3haresource     资源配置文件,如配置ip资源及脚本程序

3、拓展:一个网卡接口配置两个ip

[root@slave ~]# cd /etc/sysconfig/network-scripts/

[root@slave network-scripts]# vim ifcfg-ens33:0 

DEVICE=ens33:0
TYPE=Ethernet
ONBOOT=yes
BOOTPROTO=static
IPADDR=192.168.40.222
NETMASK=255.255.255.0
GATEWAY=192.168.40.1

 二、源码安装

1、搭建环境

#hostnamectl set-hostname master (132) ------>      192.168.40.221 (心跳线)

#hostnamectl set-hostname slave (211)    ------->     192.168.40.220  (心跳线)

vip :192.168.40.222 (后续的操作,暂时列出来)

[root@master ~]# vim /etc/hosts

192.168.40.132 master  
192.168.40.211 slave

关闭防火墙、selinux

yum安装nginx

2、源码安装(两台机子一样)

#yum install gcc gcc-c++ autoconf automake libtool glib2-devel libxml2-devel bzip2 bzip2-devel e2fsprogs-devel libxslt-devel libtool-ltdl-devel asciidoc

rz 上传源码包

安装glue

#tar xf 0a7add1d9996.tar.bz2

#cd Reusable-Cluster-Components-glue--0a7add1d9996/

./autogen.sh

./configure --prefix=/usr/local/heartbeat --with-daemon-user=hacluster --with-daemon-group=haclient --enable-fatal-warnings=no LIBS='/lib64/libuuid.so.1'

make && make install

echo $?

安装Resource Agents

tar xf v3.9.6.tar.gz

cd resource-agents-3.9.6/

./autogen.sh

./configure --prefix=/usr/local/heartbeat --with-daemon-user=hacluster --with-daemon-group=haclient --enable-fatal-warnings=no LIBS='/lib64/libuuid.so.1'

make && make install

echo $?

cd ..

安装HeartBeat

#tar xf 958e11be8686.tar.bz2

cd Heartbeat-3-0-958e11be8686/

./bootstrap

export CFLAGS="$CFLAGS -I/usr/local/heartbeat/include -L/usr/local/heartbeat/lib"

./configure --prefix=/usr/local/heartbeat --with-daemon-user=hacluster --with-daemon-group=haclient --enable-fatal-warnings=no LIBS='/lib64/libuuid.so.1'

make && make install

echo $?

配置网卡支持插件文件

#mkdir -pv /usr/local/heartbeat/usr/lib/ocf/lib/heartbeat/

#cp /usr/lib/ocf/lib/heartbeat/ocf-* /usr/local/heartbeat/usr/lib/ocf/lib/heartbeat/

注意:一般启动时会报错因为 ping和ucast这些配置都需要插件支持 需要将lib64下面的插件软连接到lib目录 才不会抛出异常

#ln -svf /usr/local/heartbeat/lib64/heartbeat/plugins/RAExec/* /usr/local/heartbeat/lib/heartbeat/plugins/RAExec/

#ln -svf /usr/local/heartbeat/lib64/heartbeat/plugins/* /usr/local/heartbeat/lib/heartbeat/plugins/

拷贝三个模版配置文件到 /usr/local/heartbeat/etc/ha.d 目录下

#cp /root/Heartbeat-3-0-958e11be8686/doc/{ha.cf,haresources,authkeys} /usr/local/heartbeat/etc/ha.d/

三、heartbeat配置文件

#vim /usr/local/heartbeat/etc/ha.d/ha.cf

  • debugfile /var/log/ha-debug
  • logfile /var/log/ha-log
  • logfacility local0
  • keepalive 2
  • warntime 10
  • deadtime 5
  • initdead 120
  • udpport 694
  • ucast ens33 192.168.40.221 (对方的心跳线)
  • auto_failback on
  • node master
  • node slave
  • ping 192.168.0.1
  • #vim /usr/local/heartbeat/etc/ha.d/authkeys(主备一样)

    auth 3
    #1 crc
    #2 sha1 HI!
    3 md5 Hello!

    #vim /usr/local/heartbeat/etc/ha.d/haresources (主备一样)

     master IPaddr::192.168.40.222/24/ens33  (虚拟IP)

    四、测试

    1、[root@master ~]# echo  web1  >   /usr/share/nginx/html/index.html  (修改主页文件,好区分,方法多样)

    2、[root@master ~]# cat  /usr/share/nginx/html/index.html
    web2  (132机子)
    3、[root@slave ~]# cat  /usr/share/nginx/html/index.html  
    we1    (211机子)

     4、虚拟ip访问(主机正常)

    heartbeat高可用

     5、[root@master ~]# systemctl stop  heartbeat  (停掉master的heartbeat)

    6、虚拟ip转移到从机

    [root@slave ~]# ip a
      1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1
        link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
        inet 127.0.0.1/8 scope host lo
           valid_lft forever preferred_lft forever
        inet6 ::1/128 scope host
           valid_lft forever preferred_lft forever
      2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
        link/ether 00:0c:29:17:c0:db brd ff:ff:ff:ff:ff:ff
        inet 192.168.40.211/24 brd 192.168.40.255 scope global ens33
           valid_lft forever preferred_lft forever
        inet 192.168.40.222/24 brd 192.168.40.255 scope global secondary ens33:0
           valid_lft forever preferred_lft forever
        inet6 fe80::20c:29ff:fe17:c0db/64 scope link
           valid_lft forever preferred_lft forever

     

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