一、環境介紹：

三臺均為雙網卡：

openstack-control.example.com openstack-control

?? eth0:172.16.171.100

?? eth1:10.1.1.100

openstack-nova.example.com openstack-nova

?? eth0:172.16.171.110

?? eth1:10.1.1.110

openstack-neutron.example.com openstack-neutron

?? eth0:172.16.171.120

?? eth1:10.1.1.120

二、corosync和pacemaker配置步驟如下：

1、? 配置時區及同步時間

2、配置集群節點間通過主機名互相通信

3、配置集群主機能使root用戶基于無密碼ssh秘鑰方式進行通信

4、 關閉selinux和iptables

5、安裝corosync和pacemaker包

6、? 修改corosync.conf配置文件

---

compatibility: whitetank

totem {
??????? version: 2
??????? secauth: on
??????? threads: 2
??????? rrp_mode: passive
??????? interface {
??????????????? ringnumber: 0
??????????????? bindnetaddr: 10.1.1.0
??????????????? mcastaddr: 239.255.1.1
??????????????? mcastport: 5405
??????????????? ttl: 1
??????? }
??????? interface {
??????????????? ringnumber: 1
??????????????? bindnetaddr: 172.16.171.0
??????????????? mcastaddr: 238.255.1.1
??????????????? mcastport: 5406
??????????????? ttl: 1
??????? }
}

logging {
??????? fileline: off
??????? to_stderr: no
??????? to_logfile: yes
??????? logfile: /var/log/cluster/corosync.log
??????? to_syslog: no
??????? debug: off
??????? timestamp: on
??????? logger_subsys {
??????????????? subsys: AMF
??????????????? debug: off
??????? }
}
service {
??????? ver: 0
??????? name: pacemaker
}

---

7、生成認證文件：authkey 并傳給其他集群服務器

8、啟動corosync服務，并查看日志

9、安裝crmsh

---

http://download.opensuse.org/repositories/network:/ha-clustering:/Stable/CentOS_CentOS-6/
[network_ha-clustering_Stable]
name=Stable High Availability/Clustering packages (CentOS_CentOS-6) type=rpm-md
baseurl=http://download.opensuse.org/repositories/network:/ha-clustering:/Stable/CentOS_CentOS-6/
gpgcheck=1
gpgkey=http://download.opensuse.org/repositories/network:/ha-clustering:/Stable/CentOS_CentOS-6/repodata/repomd.xml.key
enabled=1

---

10、使用crmsh工具配置全局屬性

---

crm(live)#configure
crm(live)configure#property stonith-enabled=false
crm(live)configure#property no-quorum-policy=ignore
crm(live)configure#property default-resource-stickiness=100

11、使用crmsh工具配置ip資源、nfs資源和mysql資源和配置這兩個資源的協同約束（排列約束）、順序約束

mysql:

---

crm(live)configure#primitive mysqlvip ocf:heartbeat:IPaddr? params? ip='10.1.1.200' nic='eth1' cidr_netmask='24' broadcast='10.1.1.0' op monitor interval=30s(啟動延遲時間) timeout=20s（監控超時時間）

crm(live)configure#primitive mysqlnfs ocf:heartbeat:Filesystem params device='10.1.1.100:/mysqldata' directory='/mydata' fstype='nfs' op monitor interval=20s timeout=40s

crm(live)configure#verify

crm(live)configure#primitive mysqlserver lsb:mysqld op monitor interval=30s timeout=15s

crm(live)configure#colocation? myserver inf: mysqlvip mysqlnfs mysqlserver

crm(live)configure#order mysqlnfs_before_mysqlserver mandatory: mysqlnfs mysqlserver

---

httpd:

---

crm(live)configure#primitive httpdvip ocf:heartbeat:IPaddr? params? ip='172.16.171.200' nic='eth0' cidr_netmask='24' broadcast='172.16.171.0' op monitor interval=30s(啟動延遲時間) timeout=20s（監控超時時間）

crm(live)configure#primitive httpdnfs ocf:heartbeat:Filesystem params device='172.16.171.100:/myhttpd' directory='/var/www/html' fstype='nfs' op monitor interval=20s timeout=40s

crm(live)configure#verify

crm(live)configure#primitive httpdserver lsb:httpd op monitor interval=30s timeout=15s

crm(live)configure#colocation? myapacheserver inf: httpdvip httpdnfs httpdserver

crm(live)configure#order httpdnfs_before_httpdserver mandatory: httpdnfs httpdserver

具體查看如下圖：

12、查看節點情況

---

crm(live)# status
Last updated: Wed Sep 23 00:08:39 2015
Last change: Wed Sep 23 00:08:33 2015
Stack: classic openais (with plugin)
Current DC: openstack-control.example.com - partition with quorum
Version: 1.1.11-97629de
3 Nodes configured, 3 expected votes
6 Resources configured


Online: [ openstack-control.example.com openstack-neutron.example.com openstack-nova.example.com ]

?mysqlnfs?????? (ocf::heartbeat:Filesystem):??? Started openstack-control.example.com
?mysqlvip?????? (ocf::heartbeat:IPaddr):??????? Started openstack-control.example.com
?mysqlserver??? (lsb:mysqld):?? Started openstack-control.example.com
?httpdvip?????? (ocf::heartbeat:IPaddr):??????? Started openstack-control.example.com
?httpdnfs?????? (ocf::heartbeat:Filesystem):??? Started openstack-control.example.com
?httpdserver??? (lsb:httpd):??? Started openstack-control.example.com

---

通過如下進行主備切換：

??? node online openstack-neutron.example.com

??? node standby openstack-neutron.example.com

轉載于:https://blog.51cto.com/wushank/1697290

總結

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