corosync + pacemaker + crmsh 高可用集群

corosync提供集群的信息层（messaging layer）的功能，传递心跳信息和集群事务信息,多台机器之间通过组播的方式监测心跳
pacemaker工作在资源分配层，提供资源管理器的功能，并以crmsh这个资源配置的命令接口来配置资源
一个用于心跳检测，一个用于资源转移。两个结合起来使用，可以实现对高可用架构的自动管理。
心跳检测是用来检测服务器是否还在提供服务，只要出现异常不能提供服务了，就认为它挂掉了。
当检测出服务器挂掉之后，就要对服务资源进行转移。
CoroSync是运行于心跳层的开源软件。
PaceMaker是运行于资源转移层的开源软件。

HAProxy + apache 负载均衡,动静分离,读写分离

Haproxy 提供高可用负载均衡以及基于 TCP 和 HTTP 应用的代理
是轻量级的擅长处理并发
但与nginx不同的是 Haproxy 并不是 Http服务器。很多带反向代理均衡负载的产品，如nginx,apacheproxy,都清一色是 WEB 服务器。简单说，就是他们能自个儿提供静态(html,jpg,gif..)或动态(PHP,cgi..)文件的传输以及处理。而Haproxy仅仅，而且专门是一款的用于均衡负载的应用代理。其自身并不能提供http服务
它自带健康检测,1.3版本后还自带一些简单的规则匹配

实验环境： server1：172.25.26.2

server2：172.25.26.3

server3：172.25.26.4

server4：172.25.26.5

一、由于此实验前面做过“RHCS套件+Nginx实现高可用负载均衡“实验所以在实验前要保持一个纯净的实验环境因此作如下操作：

Server1

[root@server1 ~]#chkconfig cman off

[root@server1 ~]#chkconfig rgmanager off

[root@server1 ~]# chkconfig modclusterd off

[root@server1 ~]#chkconfig iscsi off

[root@server1 ~]#chkconfig --list clvmd

[root@server1 ~]#chkconfig clvmd off

[root@server1 ~]#chkconfig ricci off

[root@server1 ~]#chkconfig luci off

[root@server1 ~]#/etc/init.d/ricci stop

[root@server1 ~]#/etc/init.d/luci stop

[root@server1 ~]#ps -ax

Server2:

[root@server2 ~]# chkconfig cman off

[root@server2 ~]# chkconfig rgmanager off

[root@server2 ~]# chkconfig modclusterd off

[root@server2 ~]# chkconfig iscsi off

[root@server2 ~]# chkconfig --list clvmd

[root@server2 ~]# chkconfig clvmd off

[root@server2 ~]# chkconfig ricci off

[root@server2 ~]# chkconfig luci off

[root@server2 ~]# /etc/init.d/ricci stop

[root@server2 ~]# /etc/init.d/luci stop

[root@server2 ~]# ps -ax

二、实验过程：

（1）Haproxy的配置：

Server1:

[root@server1 ~]# lshaproxy-1.6.11.tar.gz  [root@server1 ~]#  yum install -y rpm-build[root@server1 ~] #rpmbuild   -tb  haproxy-1.6.11.tar.gz [root@server1 RPMS] # cd /root/rpmbuild/RPMS[root@server1 RPMS] #ls[root@server1 x86_64] #cd x86_64/[root@server1 x86_64] #ls[root@server1 x86_64] #rpm -qpl haproxy-1.6.11-1.x86_64.rpm [root@server1 x86_64] #ls[root@server1x86_64 ] #rpm -ivh  haproxy-1.6.11-1.x86_64.rpm [root@server1x86_64 ] #cd[root@server1 ~] #ls[root@server1 ~] #tar  zxf haproxy-1.6.11.tar.gz [root@server1 ~] #ls[root@server1 haproxy-1.6.11] #cd haproxy-1.6.11[root@server1 haproxy-1.6.11] #ls[root@server1 haproxy-1.6.11] #find  -name  *.spec[root@server1 examples] #cd examples/[root@server1 examples] #ls[root@server1 examples ] #cp content-sw-sample.cfg   /etc/haproxy/haproxy.cfg[root@server1 examples] #cd /etc/haproxy/[root@server1 haproxy]#ls[root@server1 haproxy ]#vim haproxy.cfg [root@server1 haproxy] #vim /etc/init.d/haproxy

Server1:

[root@server1 ~] #  cd /etc/haproxy/[root@server1 haproxy] #vim    haproxy.cfg [root@server1 haproxy] #grep 200  /etc/passwd[root@server1 haproxy #groupadd  -g   200   haproxy[root@server1 haproxy] #useradd   -u  200 -g  200 -M  haproxy[root@server1 haproxy ] # ip addr[root@server1 haproxy] #id   haproxy[root@server1 haproxy] #vim /etc/security/limits.conf

[root@server1 ~] #vim haproxy.cfg globalmaxconn         10000stats socket    /var/run/haproxy.stat mode 600 level adminlog             127.0.0.1 local0uid             200gid             200chroot          /var/emptydaemondefaultsmode            httplog             globaloption          httplogoption          dontlognullmonitor-uri     /monitorurimaxconn         8000timeout client  30sstats uri       /admin/statsoption prefer-last-serverretries         2option redispatchtimeout connect 5stimeout server  5s# The public 'www' address in the DMZfrontend publicbind            *:80 name clear#bind            192.168.1.10:443 ssl crt /etc/haproxy/haproxy.pem#use_backend     static if { hdr_beg(host) -i img }#use_backend     static if { path_beg /img /css   }default_backend  static# The static backend backend for 'Host: img', /img and /css.backend staticbalance         roundrobinserver          statsrv1 172.25.26.3:80 check inter 1000server          statsrv2 172.25.26.4:80 check inter 1000

[root@server1 ~] #/etc/init.d/haproxy  startServer2:/etc/init.d/httpd  startServer3:/etc/init.d/httpd  start

Server1:[root@server1 ~] #cd /var/log[root@server1 ~] #ls[root@server1 ~] #cat messages[root@server1 ~] #cd /etc/haproxy/[root@server1 ~] #vim /etc/rsyslog.conf #Provides UDP syslog reception13 $ModLoad imudp14 $UDPServerRun 51441 # Don't log private authentication messages!42 *.info;mail.none;authpriv.none;cron.none;local0.none           /var/log/mess    ages60 # Save boot messages also to boot.log61 local7.*                                                /var/log/boot.log62 local0.*                                                /var/log/haproxy.log[root@server1 ~] #/etc/init.d/rsyslog    restart[root@server1 ~] #pwd[root@server1 ~] #cd /var/log[root@server1 ~] #ls[root@server1 ~] #cat haproxy.log

Server1:

[root@server1 ~] #cd /etc/haproxy/[root@server1 ~] #ls[root@server1 ~] #vim haproxy.cfg 35 frontend public36         bind            *:80 name clear37         #bind            192.168.1.10:443 ssl crt /etc/haproxy/haproxy.pem38         #use_backend     static if { hdr_beg(host) -i img }39         use_backend     static2 if { path_end -i .php   }40         default_backend  static141 42 # The static backend backend for 'Host: img', /img and /css.43 backend static144         balance         roundrobin45         server          statsrv1 172.25.26.3:80 check inter 100046 backend static247         balance         roundrobin48         server          statsrv2 172.25.26.4:80 check inter 100049 50 51 354  /etc/init.d/haproxy  reload

Server 3:

108  yum install -y php104  cd /var/www/html105  ls106  vim index.php<?phpphpinfo()?>109  /etc/init.d/httpd   restart

Server1:

[root@server1 haproxy]# vim haproxy.cfg #use_backend     static if { path_beg /img  /css }acl  blacklist   src   172.25.26.250http-request   deny   if  blacklistuse_backend     static2 if { path_end -i .php   }default_backend  static1[root@server1 haproxy]# /etc/init.d/haproxy  reload

Server1:

[root@server1 haproxy]# vim haproxy.cfg acl  blacklist   src   172.25.26.250http-request   deny   if  blacklisterrorloc     403     http://172.25.26.2:8080[root@server1 haproxy]# /etc/init.d/haproxy  reload

[root@server1 haproxy]#  vim haproxy.cfg acl  blacklist   src   172.25.26.250http-request   deny   if  blacklisterrorloc     403     http://172.25.26.2:8080use_backend     static2 if { path_end -i .php [root@server1 haproxy]# /etc/init.d/haproxy  reload[root@server1 haproxy]#yum install httpd[root@server1 haproxy]# vim /etc/httpd/conf/httpd.conf [root@server1 haproxy]# /etc/init.d/httpd  reload[root@server1 haproxy]#/etc/init.d/httpd  restart[root@server1 haproxy]# cd /var/www/html[root@server1 haproxy]# ls[root@server1 haproxy]# vim index.html[root@server1 haproxy]# /etc/init.d/haproxy  reload

Server1:

[root@server1 haproxy]# vim haproxy.cfg acl  blacklist   src   172.25.26.250#http-request   deny   if  blacklist#errorloc     403     http://172.25.26.2:8080redirect  location  http://172.25.26.2:8080use_backend     static2 if { path_end -i .php   }

[root@server1 haproxy]# /etc/init.d/haproxy  reload

Server1:

[root@server1 haproxy]# vim haproxy.cfg#http-request   deny   if  blacklist#errorloc     403     http://172.25.26.2:8080redirect  location  http://172.25.26.4use_backend     static2 if { path_end -i .php   }default_backend  static1[root@server1 haproxy]# /etc/init.d/haproxy  reload

Server1:

[root@server1 haproxy]# vim haproxy.cfg acl  blacklist   src   172.25.26.250#http-request   deny   if  blacklist#errorloc     403     http://172.25.26.2:8080redirect  location  http://www.baidu.com

[root@server1 haproxy]# /etc/init.d/haproxy  reload

Server1:

[root@server1 haproxy]# vim haproxy.cfg #use_backend     static if { path_beg /img  /css }acl  blacklist   src   172.25.26.250acl   write  method   POSTacl   write  method   PUT#http-request   deny   if  blacklist#errorloc     403     http://172.25.26.2:8080#redirect  location  http://www.baidu.comuse_backend     static2 if { path_end -i .php   }use_backend     static2 if writedefault_backend  static1[root@server1 haproxy]# /etc/init.d/haproxy  reload

server2:

[root@server2 ~]# cd /var/www/html[root@server2 html]# lsindex.html[root@server2 html]# mkdir  images[root@server2 html]# cd images/[root@server2 images]# pwd/var/www/html/images[root@server2 images]# lsredhat.jpg

Server1:

[root@server1 haproxy]# vim haproxy.cfg acl  blacklist   src   172.25.26.250acl   write  method   POSTacl   write  method   PUT#http-request   deny   if  blacklist#errorloc     403     http://172.25.26.2:8080#redirect  location  http://www.baidu.comuse_backend     static2 if { path_end -i .php   }use_backend     static2 if writedefault_backend  static1

[root@server1 haproxy]# /etc/init.d/haproxy  reload

Server3:

[root@server3 html]# lsindex.html  index.php  upload[root@server3 html]# cd upload/[root@server3 upload]# lsindex.php  upload_file.php[root@server3 upload]# mv * ..mv: overwrite `../index.php'? y[root@server3 upload]# ls[root@server3 upload]# cd ..[root@server3 html]# lsindex.html  index.php  upload  upload_file.php[root@server3 html]# chmod  777 upload[root@server3 html]# vim upload_file.php

Server2:

[root@server2 images]# cd /var/www/html[root@server2 html]# lsimages  index.html  upload[root@server2 html]# cd upload/[root@server2 upload]# lsindex.php  upload_file.php[root@server2 upload]# mv * ..[root@server2 upload]# ls[root@server2 upload]# cd ..[root@server2 html]# lsimages  index.html  index.php  upload  upload_file.php[root@server2 html]# chmod  777 upload[root@server2 html]# vim upload_file.php

[root@server2 html]# yum install -y php[root@server2 html]# /etc/init.d/httpd   restart

Server2:

[root@server2 html]# cd upload[root@server2 upload]# ls

Server3:

[root@server3 html]# cd upload[root@server3 upload]# lsredhat.jpg

（2） Pacemaker的配置（server1和server4）

Server1:

[root@server1 haproxy]# yum install -y pacemaker   corosync

Server4:

[root@server4 yum.repos.d]# yum install -y pacemaker  corosync[root@server4 yum.repos.d]# cd /etc/corosync/[root@server4 corosync]# lscorosync.conf.example  corosync.conf.example.udpu  service.d  uidgid.d[root@server4 corosync]# cp  corosync.conf.example   corosync.conf[root@server4 corosync]# vim corosync.conf

[root@server4 corosync]# scp corosync.conf   server1:/etc/corosync/[root@server4 ~]# /etc/init.d/corosync  startStarting Corosync Cluster Engine (corosync):               [  OK  ]

Server1:

[root@server1 haproxy]# /etc/init.d/corosync  startStarting Corosync Cluster Engine (corosync):               [  OK  ][root@server1 haproxy]# [root@server1 haproxy]# cd /root[root@server1 ~]# lscrmsh-1.2.6-0.rc2.2.1.x86_64.rpm  haproxy-1.6.11.tar.gz      rpmbuildhaproxy-1.6.11                    pssh-2.3.1-2.1.x86_64.rpm[root@server1 ~]# yum install crmsh-1.2.6-0.rc2.2.1.x86_64.rpm pssh-2.3.1-2.1.x86_64.rpm

Server4:

[root@server4 ~]# crm-bash: crm: command not found[root@server4 ~]# lsanaconda-ks.cfg                   install.log         pssh-2.3.1-2.1.x86_64.rpmcrmsh-1.2.6-0.rc2.2.1.x86_64.rpm  install.log.syslog[root@server4 ~]# rm -fr anaconda-ks.cfg   install.log install.log.syslog [root@server4 ~]# lscrmsh-1.2.6-0.rc2.2.1.x86_64.rpm  pssh-2.3.1-2.1.x86_64.rpm[root@server4 ~]# yum install crmsh-1.2.6-0.rc2.2.1.x86_64.rpm  pssh-2.3.1-2.1.x86_64.rpm[root@server4 ~]# scp * server1:root@server1's password: crmsh-1.2.6-0.rc2.2.1.x86_64.rpm                              100%  483KB 483.4KB/s   00:00    pssh-2.3.1-2.1.x86_64.rpm                                     100%   49KB  49.1KB/s   00:00

Server1:

[root@server1 ~]# crm_monConnection to the CIB terminated

Server4:

[root@server4 ~]# crmcrm(live)# configurecrm(live)configure# shownode server1node server4property $id="cib-bootstrap-options" \dc-version="1.1.10-14.el6-368c726" \cluster-infrastructure="classic openais (with plugin)" \expected-quorum-votes="2"crm(live)configure# byebye[root@server4 ~]# crmcrm(live)# configurecrm(live)configure# shownode server1node server4property $id="cib-bootstrap-options" \dc-version="1.1.10-14.el6-368c726" \cluster-infrastructure="classic openais (with plugin)" \expected-quorum-votes="2"crm(live)configure# property  stonith-enabled=falsecrm(live)configure# commit

Server1:

econnecting...[root@server1 ~]# crm_verify   -VL

Server4:

crm(live)configure# shownode server1node server4property $id="cib-bootstrap-options" \dc-version="1.1.10-14.el6-368c726" \cluster-infrastructure="classic openais (with plugin)" \expected-quorum-votes="2" \stonith-enabled="false"

添加vip172.25.26.100

crm(live)configure# primitive vip ocf:heartbeat:IPaddr2 params ip=172.25.26.100 cidr_netmask=24 op monitor interval=1min

crm(live)configure# commit

Server1:

[root@server1 ~]# crm_monConnection to the CIB terminated[root@server1 ~]# /etc/init.d/corosync  stopSignaling Corosync Cluster Engine (corosync) to terminate: [  OK  ]Waiting for corosync services to unload:..                 [  OK  ][root@server1 ~]# /etc/init.d/corosync  startStarting Corosync Cluster Engine (corosync):               [  OK  ]

Server4:

[root@server4 ~]# crm_monConnection to the CIB terminated

Server1:

[root@server1 ~]# crmcrm(live)# configure crm(live)configure# shownode server1node server4primitive vip ocf:heartbeat:IPaddr2 \params ip="172.25.26.100" cidr_netmask="24" \op monitor interval="1min"property $id="cib-bootstrap-options" \dc-version="1.1.10-14.el6-368c726" \cluster-infrastructure="classic openais (with plugin)" \expected-quorum-votes="2" \stonith-enabled="false"crm(live)configure# property   no-quorum-policy=ignorecrm(live)configure# commit

Server4:

[root@server4 ~]# crm_monConnection to the CIB terminated

Server1:

root@server1 ~]# /etc/init.d/corosync  stopSignaling Corosync Cluster Engine (corosync) to terminate: [  OK  ]Waiting for corosync services to unload:.                  [  OK  ][root@server1 ~]# /etc/init.d/corosync  startStarting Corosync Cluster Engine (corosync):               [  OK  ][root@server1 haproxy]# cd /root[root@server1 ~]# lscrmsh-1.2.6-0.rc2.2.1.x86_64.rpm  haproxy-1.6.11.tar.gz      rpmbuildhaproxy-1.6.11                    pssh-2.3.1-2.1.x86_64.rpm[root@server1 ~]# cd rpmbuild/[root@server1 rpmbuild]# lsBUILD  BUILDROOT  RPMS  SOURCES  SPECS  SRPMS[root@server1 rpmbuild]# cd RPMS/[root@server1 RPMS]# lsx86_64[root@server1 RPMS]# cd x86_64/[root@server1 x86_64]# lshaproxy-1.6.11-1.x86_64.rpm[root@server1 x86_64]# scp haproxy-1.6.11-1.x86_64.rpm  server4:

Server4:

Reconnecting...[root@server4 ~]# cd /root[root@server4 ~]# lscrmsh-1.2.6-0.rc2.2.1.x86_64.rpm  haproxy-1.6.11-1.x86_64.rpm  pssh-2.3.1-2.1.x86_64.rpm[root@server4 ~]# rpm -inh haproxy-1.6.11-1.x86_64.rpm -inh: unknown option[root@server4 ~]# rpm -ivh haproxy-1.6.11-1.x86_64.rpm Preparing...                ########################################### [100%]1:haproxy                ########################################### [100%][root@server4 ~]# /etc/init.d/haproxy    startStarting haproxy:                                          [  OK  ]

Server1:

root@server1 haproxy]# crmcrm(live)# configurecrm(live)configure# shownode server1node server4primitive vip ocf:heartbeat:IPaddr2 \params ip="172.25.26.100" cidr_netmask="24" \op monitor interval="1min"property $id="cib-bootstrap-options" \dc-version="1.1.10-14.el6-368c726" \cluster-infrastructure="classic openais (with plugin)" \expected-quorum-votes="2" \stonith-enabled="false" \no-quorum-policy="ignore"crm(live)configure# primitive  haproxy   lsb:haproxy  op  monitor  interval=1mincrm(live)configure# commit

Server4:

[root@server4 ~]# crm_monConnection to the CIB terminated

Server1:

root@server1 haproxy]# crmcrm(live)# configurecrm(live)configure# shownode server1node server4primitive vip ocf:heartbeat:IPaddr2 \params ip="172.25.26.100" cidr_netmask="24" \op monitor interval="1min"property $id="cib-bootstrap-options" \dc-version="1.1.10-14.el6-368c726" \cluster-infrastructure="classic openais (with plugin)" \expected-quorum-votes="2" \stonith-enabled="false" \no-quorum-policy="ignore"crm(live)configure# group hagroup  vip haproxy crm(live)configure# commit

Server4:

[root@server4 ~]# crm_monConnection to the CIB terminatedReconnecting...[root@server4 ~]# crm node standby[root@server4 ~]# crmcrm(live)# bye

Server1:

[root@server1 haproxy]# crm_monConnection to the CIB terminated

Server4:

Connection to the CIB terminated[root@server4 ~]# crm node online

Server1:

[root@server1 ~]# crm_mon

Server1:

[root@server1 haproxy]# stonith_admin -Ifence_xvmfence_wtifence_vmware_soapfence_vmware_helperfence_vmwarefence_virtfence_virshfence_toolfence_scsifence_sanbox2fence_rsbfence_rsa[root@server1 haproxy]# cd /etc/cluster/[root@server1 cluster]# lscluster.conf  cman-notify.d  fency_xvm.key[root@server1 cluster]# crm_monConnection to the CIB terminated

Server4:

 stonith_admin  -Ifence_pcmkfence_legacy2 devices found[root@server4 ~]# mkdir  /etc/cluster

物理机：

[root@foundation26 Desktop]# scp /etc/cluster/fency_xvm.key  root@172.25.26.5:/etc/cluster/[root@foundation26 Desktop]# systemctl status fence_virtd.service_virtdUnit fence_virtd.service_virtd.service could not be found.[root@foundation26 Desktop]# systemctl status fence_virtd● fence_virtd.service - Fence-Virt system host daemonLoaded: loaded (/usr/lib/systemd/system/fence_virtd.service; enabled; vendor preset: disabled)Active: active (running) since Sat 2018-08-04 00:37:05 CST; 7h ago

Server4：

[root@server4 ~]# cd /etc/cluster/[root@server4 cluster]# lsfency_xvm.key[root@server4 cluster]# yum  provides */fence_xvm[root@server4 cluster]# yum install fence-virt-0.2.3-15.el6.x86_64[root@server4 cluster]# stonith_admin  -Ifence_xvmfence_virtfence_pcmkfence_legacy4 devices found[root@server4 cluster]# crmcrm(live)# configure crm(live)configure# primitive  vmfence  stonith:fence_xvm params pcmk_host_map="server1:test1;server4:test4" op monitor  interval=1mincrm(live)configure# commitcrm(live)configure# shownode server1node server4 \attributes standby="off"primitive haproxy lsb:haproxy \op monitor interval="1min"primitive vip ocf:heartbeat:IPaddr2 \params ip="172.25.26.100" cidr_netmask="24" \op monitor interval="1min"primitive vmfence stonith:fence_xvm \params pcmk_host_map="server1:test1;server4:test4" \op monitor interval="1min"group hagroup vip haproxyproperty $id="cib-bootstrap-options" \dc-version="1.1.10-14.el6-368c726" \cluster-infrastructure="classic openais (with plugin)" \expected-quorum-votes="2" \stonith-enabled="false" \no-quorum-policy="ignore"crm(live)configure# property  stonith-enabled=truecrm(live)configure# commitcrm(live)configure# crm(live)configure# byebye[root@server4 cluster]# echo c > /proc/sysrq-trigger  Write failed: Broken pipe

Server1：

[root@server1 cluster]# crm_monConnection to the CIB terminated

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基于linux下的 Pacemaker+Haproxy高可用负载均衡架构

corosync + pacemaker + crmsh 高可用集群

HAProxy + apache 负载均衡,动静分离,读写分离

一、由于此实验前面做过“RHCS套件+Nginx实现高可用负载均衡“实验所以在实验前要保持一个纯净的实验环境因此作如下操作：

Server1

Server2:

二、实验过程：

Server1:

Server1:

Server1:

Server 3:

Server1:

Server1:

Server1:

Server1:

Server1:

Server1:

server2:

Server1:

Server3:

Server2:

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（2） Pacemaker的配置（server1和server4）

Server1:

Server4:

Server1:

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Server1:

Server4:

Server1:

Server4:

添加vip172.25.26.100

Server1:

Server4:

Server1:

Server4:

Server1:

Server4:

Server1:

Server4:

Server1:

Server4:

Server1:

Server4:

Server1:

Server1:

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物理机：

Server4：

Server1：

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