corosync+pacemaker+crm简单配置

心已赠人 2021-09-19 06:20 301阅读 0赞

\# 系统 centos7.2      安装版本都是Yum源

node1: 192.168.8.111

node2:192.168.8.112

vip     :192.168.8.200

nfs     :192.168.8.113

\# 互信

~\] ssh-keygen

~\]\# cat ~/.ssh/id\_rsa.pub >> ~/.ssh/authorized\_keys

~\]\# chmod go= .ssh/authorized\_keys

~\]\# scp -p .ssh/id\_rsa .ssh/authorized\_keys node1:/root/.ssh/

\# 安装pcs

~\]\# ansible ha -m service -a "name=pcs state=installd"

\# 同步时间

~\]\# ntpdate 192.168.9.19;ssh node2 ntpdate 192.168.9.19

\# 启动服务

~\]\# ansible ha -m service -a "name=pcsd state=started enabled=yes"

\# 设置hacluster密码

~\]\# ansible ha -m shell -a 'echo "xiong" | passwd --stdin hacluster'

\# 认证集群服务

~\]\# pcs cluster auth node1 node2

Username: hacluster

Password:

node1: Authorized

node2: Authorized

\# 将两个节点加入集群服务内 --name集群名称 节点 广播地址

~\]\# pcs cluster setup --name myha node1 node2

Shutting down pacemaker/corosync services...

Redirecting to /bin/systemctl stop  pacemaker.service

Redirecting to /bin/systemctl stop  corosync.service

Killing any remaining services...

Removing all cluster configuration files...

node1: Succeeded

node2: Succeeded

Synchronizing pcsd certificates on nodes node1, node2...

node1: Success

node2: Success

Restaring pcsd on the nodes in order to reload the certificates...

node1: Success

node2: Success

\# 加入集群之后会产生corosync配置文件

~\]\# ls /etc/corosync/

corosync.conf  corosync.conf.example  corosync.conf.example.udpu  corosync.xml.example  uidgid.d

\# 启动pcs服务

~\]\# pcs cluster start --all

node2: Starting Cluster...

node1: Starting Cluster...

\# 跟踪查看日志

tail -f  /var/log/cluster/corosync.log

\# 查看通信是否正常

~\]\# corosync-cfgtool -s

Printing ring status.

Local node ID 1

RING ID 0

id= 127.0.0.1 \# 当为127.0.0.1时说明集群是失败的 更改/etc/hosts将127.0.0.1 主机名删除 只留默认项

status= ring 0 active with no faults

Current DC： 指定的协调员

\# crmsh yum源

\[network\_ha-clustering\_Stable\]

name=Stable High Availability/Clustering packages (CentOS\_CentOS-7)

type=rpm-md

baseurl=http://download.opensuse.org/repositories/network:/ha-clustering:/Stable/CentOS\_CentOS-7/

gpgcheck=1

gpgkey=http://download.opensuse.org/repositories/network:/ha-clustering:/Stable/CentOS\_CentOS-7//repodata/repomd.xml.key

enabled=1

\# 安装crmsh pssh  在哪台机器上操作就安哪一台就成

~\]\# yum -y install crmsh pssh

\# nfs配置

~\]\# ansible ha -m yum -a "name=nfs-utils state=installed"

~\]\# vim /etc/exports

/opt/pages      192.168.8.0/24(rw)

\# 安装nginx并测试nfs挂载是否生效

~\]\# ansible ha -m yum -a "name=nginx state=installed"

~\]\# ansible ha -m shell -a "mount -t nfs 192.168.8.113:/opt/pages /usr/share/nginx/html/"

~\]\# ansible ha -m shell -a  "systemctl start nginx"

~\]\# ansible ha -m shell -a  "umount /usr/share/nginx/html"

~\]\# ansible ha -m shell -a  "df -Th"

\# 每次操作需要先 verify 最后完成之后再执行 commit

\# 定义虚拟IP地址

crm(live)configure\# primitive vip ocf:heartbeat:IPaddr2 params ip="192.168.8.200"

\# 定义nginx服务

crm(live)configure\# primitive vipservice systemd:nginx op monitor interval=30s timeout=20s

\# 定义NFS服务

crm(live)configure\# primitive vipnfs ocf:heartbeat:Filesystem params device="192.168.8.113:/opt/pages" directory="/usr/share/nginx/html/" fstype="nfs" op start timeout=60s op stop timeout=60s op  monitor timeout=40 interval=20

\# 定义排列约束，   解析： A ( B C )   AB AC   vipservice即要跟vip也得跟vipnfs在一起

crm(live)configure\# colocation vipservice\_with\_vip\_and\_vipnfs inf: vipservice ( vip vipnfs )

\# 定义顺序约束 启动顺序    强制先启动 vip再启动 vipnfs

crm(live)configure\# order vipnfs\_after\_vip  Mandatory: vip vipnfs

\# 强制先启动 vipnfs 再启动 vipservice

crm(live)configure\# order vipservice\_after\_vipnfs Mandatory: vipnfs vipservice

\# 检查服务是否正常

crm(live)\# status

Last updated: Thu May 18 16:00:41 2017Last change: Thu May 18 16:00:36 2017 by root via cibadmin on node1

Stack: corosync

Current DC: node2 (version 1.1.13-10.el7-44eb2dd) - partition with quorum

2 nodes and 3 resources configured

Online: \[ node1 node2 \]

Full list of resources:

vip(ocf::heartbeat:IPaddr2):Started node1

vipservice(systemd:nginx):Started node1

vipnfs(ocf::heartbeat:Filesystem):Started node1

\# 退出crmsh

\# 分别执行ss -tnl | grep 80      df -Th    ip addr show  最后执行完成有  将node1强制成为standby检查node2节点

\# 设置vip资源黏性为100 倾向于node1

crm(live)configure\# location node1\_vip vip 100: node1

\# 常见错误

\# Node node1: UNCLEAN (offline)   检查 corosync-cfgtools -s 查看IP地址是不是127.0.0.1如果是删除127.1配置的主机名称

\[root@node2 ~\]\# pcs status

Cluster name: myha

WARNING: no stonith devices and stonith-enabled is not false

Last updated: Wed May 17 15:34:53 2017Last change: Wed May 17 15:31:50 2017 by hacluster via crmd on node2

Stack: corosync

Current DC: node2 (version 1.1.13-10.el7-44eb2dd) - partition WITHOUT quorum

2 nodes and 0 resources configured

Node node1: UNCLEAN (offline)

Online: \[ node2 \]

\# WARNING: no stonith devices and stonith-enabled is not false

解决：  pcs property set stonith-enabled=false

本文转自812374156 51CTO博客，原文链接：http://blog.51cto.com/xiong51/1927204，如需转载请自行联系原作者

corosync+pacemaker+crm简单配置

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