Heartbeat高可用http
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实验图
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heartbeat高可用http
一、实验图：
二、heartbeat高可用http(Heartbeat V1 haresource)
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heartbeat节点ssh互信
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heartbeat节点名称相互解析,uname -n
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heartbeat节点时间一致性
安装前准备：
ssh多节点互信
[root@node4 ~]# ssh-keygen -t rsa [root@node4 ~]# ssh-copy-id -i /root/.ssh/id_rsa.pub root@node3 root@node3's password: Now try logging into the machine, with "ssh 'root@node3'", and check in: .ssh/authorized_keys to make sure we haven't added extra keys that you weren't expecting. [root@node4 ~]#
节点时间一致检查
[root@node4 ~]# ntpdate 192.168.3.10 [root@node4 ~]# ssh node3 'date';date Mon Jul 4 20:30:39 CST 2016 Mon Jul 4 20:30:39 CST 2016 [root@node4 ~]#
多节点名称解析
[root@node4 ~]# ssh node3 'uname -n';uname -n node3 node4 [root@node4 ~]#
安装heartbeat:
[root@node4 ~]# yum install perl-TimeDate PyXML libnet net-snmp-libs libtool-ltdl -y [root@node4 ~]# 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 [root@node3 ~]# yum install perl-TimeDate PyXML libnet net-snmp-libs libtool-ltdl -y [root@node3 ~]# 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
准备heartbeat配置文件：
[root@node4 ~]# cd /usr/share/doc/heartbeat-2.1.4/ [root@node4 heartbeat-2.1.4]# cp authkeys ha.cf haresources /etc/ha.d/ [root@node4 heartbeat-2.1.4]# cd /etc/ha.d/ [root@node4 ha.d]# [root@node4 ha.d]# vi authkeys #配置双节点心跳信息通信密码 auth 3 3 md5 Hello!manager1 [root@node4 ha.d]# vi ha.cf logfile /var/log/ha-log #定义日志格式 keepalive 2 deadtime 30 warntime 10 udpport 694 #监听694端口 mcast eth0 225.0.3.1 694 1 0 #节点多播方式转发心跳信息 auto_failback on node node3 #heartbeat集群存在节点数 node node4 ping 192.168.3.1 #ping节点仲裁 compression bz2 compression_threshold 2 [root@node4 ha.d]# chmod 600 authkeys #修改认证密码文件的权限 [root@node4 ha.d]# vi haresources node4 192.168.3.50/24/eth0 httpd #以node4节点为dc，并且定义集群VIP与资源http服务 [root@node4 ha.d]# scp ha.cf haresources authkeys node3:/etc/ha.d/ #node3节点也需要此配置 ha.cf 100% 10KB 10.3KB/s 00:00 haresources 100% 5939 5.8KB/s 00:00 authkeys 100% 651 0.6KB/s 00:00 [root@node4 ha.d]#
安装httpd服务：
[root@node4 ha.d]# yum install httpd -y [root@node4 ha.d]# echo "<h1>nnode4 web server</h1>" > /var/www/html/index.html [root@node4 ha.d]# chkconfig httpd off #关闭http服务开机自启动 [root@node4 ha.d]# service httpd stop #关闭http服务，因为资源服务的启动都是有heartbeat来完成 Stopping httpd: [ OK ] [root@node4 ha.d]# [root@node3 ha.d]# yum install httpd -y [root@node3 ha.d]# echo "<h1>nnode3 web server</h1>" > /var/www/html/index.html [root@node3 ~]# chkconfig httpd off [root@node3 ~]# service httpd stop Stopping httpd: [ OK ] [root@node3 ~]#
启动heartbeat服务，并测试：
[root@node4 ha.d]# service heartbeat restart Stopping High-Availability services: Done. Waiting to allow resource takeover to complete: Done. Starting High-Availability services: 2016/07/04_20:59:23 INFO: Resource is stopped Done. [root@node4 ha.d]# [root@node3 ~]# service heartbeat restart #我在node3启动heartbeat时，报错，检查报错是认证文件的权限不对，修改修改权限为600就可以了 Stopping High-Availability services: Done. Waiting to allow resource takeover to complete: Done. Starting High-Availability services: 2016/07/04_21:00:13 INFO: Resource is stopped Heartbeat failure [rc=6]. Failed. heartbeat: udpport setting must precede media statementsheartbeat[2154]: 2016/07/04_21:00:13 ERROR: Ba d permissions on keyfile [/etc/ha.d/authkeys], 600 recommended.heartbeat[2154]: 2016/07/04_21:00:13 ERROR: Authentication configuration error. heartbeat[2154]: 2016/07/04_21:00:13 ERROR: Configuration error, heartbeat not started. [root@node3 ha.d]# chmod 600 authkeys [root@node3 ha.d]# service heartbeat restart Stopping High-Availability services: Done. Waiting to allow resource takeover to complete: Done. Starting High-Availability services: 2016/07/04_21:01:51 INFO: Resource is stopped Done. [root@node3 ha.d]#
ns1测试：
[root@ns1 ~]# curl 192.168.3.50 <h1>nnode4 web server</h1> [root@ns1 ~]#
这一部分到此OK，接着做.
二、heartbeat高可用http(Heartbeat V2 crm heartbeat gui工具)
修改配置：
[root@node4 ha.d]# service heartbeat stop [root@node3 ha.d]# service heartbeat stop [root@node4 ha.d]# vi ha.cf crm on [root@node3 ha.d]# vi ha.cf crm on
安装heartbeat-gui工具:
[root@node4 ~]# yum install pygtk2-libglade [root@node4 ~]# rpm -ivh heartbeat-gui-2.1.4-12.el6.x86_64.rpm [root@node3 ~]# yum install pygtk2-libglade [root@node4 ~]# rpm -ivh heartbeat-gui-2.1.4-12.el6.x86_64.rpm
启动heartbeat服务：
[root@node4 ~]# service heartbeat start [root@node3 ~]# service heartbeat start [root@node4 ~]# passwd hacluster #此用户使我们在安装heartbeat-gui时创建，我们登录gui时需要此用户和密码，默认没有密码，需要我们设置，才能准确登录gui [root@node3 ~]# passwd hacluster [root@node4 ~]# hb_gui & #打开gui工具报错,gui工具是监听在5560端口，如果打不开，可以检查此端口是否监听 [1] 2810 [root@node4 ~]# Traceback (most recent call last): File "/usr/bin/hb_gui", line 41, in <module> import gtk, gtk.glade, gobject File "/usr/lib64/python2.6/site-packages/gtk-2.0/gtk/__init__.py", line 64, in <module> _init() File "/usr/lib64/python2.6/site-packages/gtk-2.0/gtk/__init__.py", line 52, in _init _gtk.init_check()RuntimeError: could not open display X11-forward报错 需要安装如下包，安装完成之后重新登录shell即可 [root@node4 ~]# yum install -y xorg-x11-xauth [root@node4 ~]# hb_gui & node3不知道为什么报错了，直接killall heartbeat 系统重启，之后就可以了。
设置http服务：
接着添加web_vip,有顺序，先启动的资源，先添加，后启动的资源后添加，那我们应该先启动IP，接着再去启动http服务
测试web服务:
[root@ns1 ~]# curl 192.168.3.50 <h1>nnode4 web server</h1>
修改node4为standby:
服务已经发生切换：
[root@ns1 ~]# curl 192.168.3.50 <h1>nnode3 web server</h1>
设置共享存储：
[root@ns1 ~]# exportfs -arv exporting 192.168.3.0/24:/www/htdocs [root@ns1 ~]# echo "<h1>nfs web server</h1>" > /www/htdocs/index.html
客户端安装nfs-utils,并且测试挂载:
[root@node4 ~]# yum install nfs-utils -y [root@node4 ~]# cat /var/www/html/index.html <h1>nfs web server</h1> [root@node4 ~]#
停止资源，重新配置资源组：
测试网页：
[root@ns1 ~]# curl 192.168.3.50 <h1>nfs web server</h1> [root@ns1 ~]#
设置node3为standby,检查服务转移到node4:
Heartbeat高可用mysql在此环境上接着做。
原创文章，作者：nice_neo_linux，如若转载，请注明出处：http://www.178linux.com/22001
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厉害啊！！