Corosync+Pacemaker+NFS+Httpd高可用web集群部署

我就是我 2022-05-17 11:56 295阅读 0赞

**Corosync+Pacemaker+NFS+Httpd****高可用web集群（使用资源管理工具****pcs****配置****）**

**框架：pcs(Corosync+pacemaker)+nfs+httpd**

集群节点1:192.168.88.132  cen7.field.com

集群节点2:192.168.88.133  node2.field.com

集群节点3:192.168.88.134  node1.field.com

vip: 192.168.88.188   资源代理：ocf:heartbeat:IPaddr

nfs服务器：node1.field.com  资源代理：ocf:heartbeat:Filesystem

web服务器：cen7.field.com  node2.field.com  node1.field.com  资源代理：systemd:httpd

**配置集群的前提**

**（1****）、时间同步；**

**（2****）、.****基于当前正在使用的主机名互相访问；**

**（3****）、是否会用到仲裁设备；**

**配置集群的前提：参考[《使用资源管理工具pcs配置Corosync+pacemaker》][pcs_Corosync_pacemaker]**

**配置nfs服务器：参考[《Corosync+pacemaker+nfs+httpd高可用web集群》][Corosync_pacemaker_nfs_httpd_web]（使用资源管理工具****crmsh****配置****）**

**各节点安装配置httpd：参考[《Corosync+pacemaker+nfs+httpd高可用web集群》][Corosync_pacemaker_nfs_httpd_web]（使用资源管理工具****crmsh****配置****）**

此处不做赘述

**一、启动****corosync****和****pacemaker**

**1****、使用****crm****交互模式：删除此前定义的资源**

\[root@cen7 corosync\]\# crm configure

crm(live)configure\# edit

ERROR: Cannot delete running resources: webip, webserver, webstore

Edit or discard changes (yes to edit, no to discard) (y/n)? n

该报错显示：不能删除正在运行的资源，删除资源之前需要先停止资源

\# resource资源管理子命令：所有的资源都在这个子命令后定义

crm(live)configure\# cd

crm(live)\# cd resource

crm(live)resource\# help

**\#****命令用法可以使用“help \[command\]****”查看**

crm(live)resource\# help stop

Usage:

stop <rsc> \[<rsc> ...\]

\#关闭此前定义的资源：webip、webserver、webstore

crm(live)resource\# stop webip webserver webstore

\#删除此前定义的资源：delete <rsc> \[<rsc> ...\]

crm(live)resource\# cd ../configure

crm(live)configure\# delete webip webserver webstore

INFO: hanging order:webserver\_after\_webstore deleted

INFO: constraint colocation:webserver\_with\_webstore\_and\_webip updated

INFO: hanging order:webstore\_after\_webip deleted

INFO: hanging colocation:webserver\_with\_webstore\_and\_webip deleted

INFO: hanging location:webservice\_prefer\_cen7 deleted

crm(live)configure\# verify

ERROR: Warnings found during check: config may not be valid

注意：如果有无意义的配置会报如上error，使用show查看配置，直接使用edit编辑删除无效配置:wq保存退出即可。

crm(live)configure\# show

node 1: cen7.field.com \\

attributes standby=off

node 2: node2.field.com

node 3: node1.field.com

property cib-bootstrap-options: \\

have-watchdog=false \\

dc-version=1.1.18-11.el7\_5.3-2b07d5c5a9 \\

cluster-infrastructure=corosync \\

stonith-enabled=false \\

default-resource-stickiness=50

crm(live)configure\# commit

**2****、确认****pcs****状态信息**

\[root@cen7 corosync\]\# pcs status

Cluster name:

WARNING: corosync and pacemaker node names do not match (IPs used in setup?)

Stack: corosync

Current DC: node1.field.com (version 1.1.18-11.el7\_5.3-2b07d5c5a9) - partition with quorum

Last updated: Thu Aug  2 10:46:11 2018

Last change: Thu Aug  2 10:45:10 2018 by root via cibadmin on cen7.field.com

3 nodes configured

0 resources configured

Online: \[ cen7.field.com node1.field.com node2.field.com \]

No resources

Daemon Status:

corosync: active/disabled

pacemaker: active/enabled

pcsd: inactive/disabled

**3****、查看配置文件：备份使用****crmsh****管理时的****corosync.conf****文件**

\[root@cen7 corosync\]\# ls

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

\[root@cen7 corosync\]\# cp corosync.conf corosync.conf.bak080215

停止pacemaker和corosync服务

\[root@cen7 corosync\]\# ansible hacluster -m service -a 'name=pacemaker state=stopped'

\[root@cen7 corosync\]\# ansible hacluster -m service -a 'name=corosync state=stopped'

**二、安装****pcs****配置集群管理工具**

**1****、安装****pcs**

\[root@cen7 corosync\]\# ansible hacluster -m yum -a 'name=pcs state=latest'

**2****、配置****pcs**

**1****）、修改pcs****安装时默认用户hacluster****密码，两个节点密码设置一致。**

\[root@cen7 corosync\]\# ansible hacluster -m shell -a 'echo hacluster |passwd --stdin hacluster'

192.168.88.133 | SUCCESS | rc=0 >>

更改用户 hacluster 的密码 。

passwd：所有的身份验证令牌已经成功更新。

192.168.88.134 | SUCCESS | rc=0 >>

更改用户 hacluster 的密码 。

passwd：所有的身份验证令牌已经成功更新。

192.168.88.132 | SUCCESS | rc=0 >>

更改用户 hacluster 的密码 。

passwd：所有的身份验证令牌已经成功更新。

**2****）、集群节点间认证**

注意：认证时用户必须是pcs安装时的默认用户hacluster，否则无法认证通过

\[root@cen7 corosync\]\# pcs cluster auth cen7.field.com node1.field.com node2.field.com -u hacluster

Password:

Error: Unable to communicate with node1.field.com

Error: Unable to communicate with cen7.field.com

Error: Unable to communicate with node2.field.com

此处认证不通过，逐一排查原因，可能是：iptables、setLinux、Firewall，centos7默认开启Firewall

此处全部认证不通过，原因是未启动pcsd服务

\[root@cen7 corosync\]\# firewall-cmd  --state

not running

\[root@cen7 corosync\]\# ansible hacluster -m service -a 'name=pcsd state=started enabled=yes'

\[root@cen7 corosync\]\# pcs cluster auth cen7.field.com node1.field.com node2.field.com -u hacluster

Password:

node1.field.com: Authorized

cen7.field.com: Authorized

node2.field.com: Authorized

**3****）、创建并启动集群**

\[root@cen7 corosync\]\# pcs cluster setup --name=mycluster cen7.field.com node1.field.com node2.field.com

Error: cen7.field.com: node is already in a cluster \-->提示此前节点已经定义过集群，使用\--force强制创建为新集群

Error: node1.field.com: node is already in a cluster

Error: node2.field.com: node is already in a cluster

Error: nodes availability check failed, use --force to override. WARNING: This will destroy existing cluster on the nodes.

\[root@cen7 corosync\]\# pcs cluster setup --name=mycluster cen7.field.com node1.field.com node2.field.com --force

Destroying cluster on nodes: cen7.field.com, node1.field.com, node2.field.com...

node1.field.com: Stopping Cluster (pacemaker)...

node2.field.com: Stopping Cluster (pacemaker)...

cen7.field.com: Stopping Cluster (pacemaker)...

node2.field.com: Successfully destroyed cluster

node1.field.com: Successfully destroyed cluster

cen7.field.com: Successfully destroyed cluster

Sending 'pacemaker\_remote authkey' to 'cen7.field.com', 'node1.field.com', 'node2.field.com'

node1.field.com: successful distribution of the file 'pacemaker\_remote authkey'

node2.field.com: successful distribution of the file 'pacemaker\_remote authkey'

cen7.field.com: successful distribution of the file 'pacemaker\_remote authkey'

Sending cluster config files to the nodes...

cen7.field.com: Succeeded

node1.field.com: Succeeded

node2.field.com: Succeeded

Synchronizing pcsd certificates on nodes cen7.field.com, node1.field.com, node2.field.com...

node1.field.com: Success

cen7.field.com: Success

node2.field.com: Success

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

node1.field.com: Success

cen7.field.com: Success

node2.field.com: Success

\#由以上信息，可以看到已经配置成功

**4****）、查看pcs****状态：显示当前节点无运行集群**

\[root@cen7 corosync\]\# pcs status

Error: cluster is not currently running on this node

**三、配置****Corosync**

**1****、编辑****Corosync****配置文件并启动启动集群**

\[root@cen7 corosync\]\# ls

corosync.conf  corosync.conf.bak080215  corosync.conf.example  corosync.conf.example.udpu  corosync.xml.example  uidgid.d

\[root@cen7 corosync\]\# vim corosync.conf

\[root@cen7 corosync\]\# grep -v '^\[\[:space:\]\]\*\#' corosync.conf

totem \{

version: 2

cluster\_name: mycluster

secauth: off

transport: udpu

nodelist \{

node \{

ring0\_addr: cen7.field.com

nodeid: 1

node \{

ring0\_addr: node1.field.com

nodeid: 2

node \{

ring0\_addr: node2.field.com

nodeid: 3

quorum \{

provider: corosync\_votequorum

logging \{

to\_logfile: yes

logfile: /var/log/cluster/corosync.log

to\_syslog: yes

**配置各节点**

各节点Corosync配置文件和认证密钥文件相同：只需将corosync.conf和authkey复制至node2、node1节点即可完成配置

\[root@cen7 corosync\]\# scp -p authkey corosync.conf node2:/etc/corosync/

\#scp -p 保留原有权限

authkey                                                        100%  128    75.3KB/s   00:00

corosync.conf                                                  100% 3031     1.7MB/s   00:00

\[root@cen7 corosync\]\# scp -p  authkey corosync.conf node1:/etc/corosync/

authkey                                                        100%  128    49.4KB/s   00:00

corosync.conf                                                  100% 3131     1.1MB/s   00:00

**2****、启动所有集群节点并确认状态**

\[root@cen7 corosync\]\# pcs cluster start --all

cen7.field.com: Starting Cluster...

node1.field.com: Starting Cluster...

node2.field.com: Starting Cluster...

**1****）、使用“corosync-cfgtool -s****”查看集群节点信息**

可以看到：节点192.168.88.133/132/134均已启动成功， 状态为：ring 0 active with no faults

\[root@cen7 corosync\]\# ansible hacluster -m shell -a 'corosync-cfgtool -s'

192.168.88.133 | SUCCESS | rc=0 >>

Printing ring status.

Local node ID 3

RING ID 0

id      = 192.168.88.133

status       = ring 0 active with no faults

192.168.88.134 | SUCCESS | rc=0 >>

Printing ring status.

Local node ID 2

RING ID 0

id      = 192.168.88.134

status       = ring 0 active with no faults

192.168.88.132 | SUCCESS | rc=0 >>

Printing ring status.

Local node ID 1

RING ID 0

id      = 192.168.88.132

status       = ring 0 active with no faults

**2****）、使用“   corosync-cmapctl****”命令查看集群成员信息**

\[root@cen7 corosync\]\# corosync-cmapctl |grep members

runtime.totem.pg.mrp.srp.members.1.config\_version (u64) = 0

runtime.totem.pg.mrp.srp.members.1.ip (str) = r(0) ip(192.168.88.132)

runtime.totem.pg.mrp.srp.members.1.join\_count (u32) = 1

runtime.totem.pg.mrp.srp.members.1.status (str) = joined

runtime.totem.pg.mrp.srp.members.2.config\_version (u64) = 0

runtime.totem.pg.mrp.srp.members.2.ip (str) = r(0) ip(192.168.88.134)

runtime.totem.pg.mrp.srp.members.2.join\_count (u32) = 1

runtime.totem.pg.mrp.srp.members.2.status (str) = joined

runtime.totem.pg.mrp.srp.members.3.config\_version (u64) = 0

runtime.totem.pg.mrp.srp.members.3.ip (str) = r(0) ip(192.168.88.133)

runtime.totem.pg.mrp.srp.members.3.join\_count (u32) = 1

runtime.totem.pg.mrp.srp.members.3.status (str) = joined

**3****）、查看集群节点状态**

\[root@cen7 corosync\]\# pcs status

Cluster name: mycluster

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

Stack: corosync

Current DC: node1.field.com (version 1.1.18-11.el7\_5.3-2b07d5c5a9) - partition with quorum

Last updated: Thu Aug  2 11:04:41 2018

Last change: Thu Aug  2 11:03:03 2018 by hacluster via crmd on node1.field.com

3 nodes configured

0 resources configured

Online: \[ cen7.field.com node1.field.com node2.field.com \]

No resources

Daemon Status:

corosync: active/disabled

pacemaker: active/disabled

pcsd: active/enabled

**4****）、“crm\_verify -L -V****”命令查看配置正确与否**

\[root@cen7 corosync\]\# crm\_verify -L -V

error: unpack\_resources: Resource start-up disabled since no STONITH resources have been defined

error: unpack\_resources: Either configure some or disable STONITH with the stonith-enabled option

error: unpack\_resources: NOTE: Clusters with shared data need STONITH to ensure data integrity

Errors found during check: config not valid

以上错误是因为默认开启stonish,配置集群的工作属性，使用以下命令禁用stonith，可消除该错误。

\[root@cen7 corosync\]\# pcs property set stonith-enabled=false

\[root@cen7 corosync\]\# crm\_verify -L -V

**四、使用****pcs****配置****Corosync+pacemaker+nfs+httpd****高可用集群**

**1****、定义集群资源和约束**

**1****）、定义VIP****资源：**

**Pcs****常见资源命名说明：**

**pcs resource create <rsname>****：创建资源命令**

**pcs resource delete <rsname>****：创删除资源命令 **

**op****：指定参数**

**monitor** **定义资源监控选项：interval****（检测间隔时间）timeout****（监控超时时间）**

以下命令表示配置虚拟IP地址“192.168.88.188”，检测间隔时间为20s，超时时长为,10s

\[root@cen7 corosync\]\# pcs resource create webip ocf:heartbeat:IPaddr ip="192.168.88.188" op monitor interval=20s timeout=10s

\[root@cen7 corosync\]\# pcs status

Cluster name: mycluster

Stack: corosync

Current DC: node1.field.com (version 1.1.18-11.el7\_5.3-2b07d5c5a9) - partition with quorum

Last updated: Thu Aug  2 11:15:43 2018

Last change: Thu Aug  2 11:15:38 2018 by root via cibadmin on cen7.field.com

3 nodes configured

1 resource configured

Online: \[ cen7.field.com node1.field.com node2.field.com \]

Full list of resources:

webip     (ocf::heartbeat:IPaddr):  Starting cen7.field.com

\#可以看到：webip资源已经定义成功并且启动在cen7节点上

Daemon Status:

corosync: active/disabled

pacemaker: active/disabled

pcsd: active/enabled

\[root@cen7 corosync\]\# pcs resource delete webip

\[root@cen7 corosync\]\# pcs resource create webip ocf:heartbeat:IPaddr  ip="192.168.88.188" op monitor interval=20s timeout=10s

**2****）、定义nfs****文件系统资源：文件系统资源属于ocf****资源代理**

文件系统资源中，必须指明的参数有device（设备）、directory（挂载目录）、fstype（文件系统类型）

**文件系统资源常见参数说明：**

**start****启动资源选项：interval****（间隔时间）、timeout****（超时时间）**

**stop****停止资源选项：interval****（间隔时间）、timeout****（超时时间）**

**monitor****资源监控选项：interval****（间隔时间）timeout****（监控超时时间）**

以下命令表示创建nfs文件系统资源：

将"192.168.88.134:/www/hadocs"nfs共享目录挂载到/var/www/html/目录下，启动超时时间60s，关闭超时时间60s，监控检测间隔时间为20s，超时时长为40s

\[root@cen7 corosync\]\# pcs resource create webstore ocf:heartbeat:Filesystem device="192.168.88.134:/www/hadocs" directory="/var/www/html/"

fstype="nfs" op start timeout=60s op stop timeout=60s op monitor interval=20s timeout=40s

\[root@cen7 corosync\]\# pcs status

Cluster name: mycluster

Stack: corosync

Current DC: node1.field.com (version 1.1.18-11.el7\_5.3-2b07d5c5a9) - partition with quorum

Last updated: Thu Aug  2 11:20:37 2018

Last change: Thu Aug  2 11:20:35 2018 by root via cibadmin on cen7.field.com

3 nodes configured

2 resources configured

Online: \[ cen7.field.com node1.field.com node2.field.com \]

Full list of resources:

webip     (ocf::heartbeat:IPaddr):  Started cen7.field.com

webstore        (ocf::heartbeat:Filesystem):   Started node1.field.com

\#可以看到：webstore资源已经定义成功并且启动在node1节点上

Daemon Status:

corosync: active/disabled

pacemaker: active/disabled

pcsd: active/enabled

**3****）、定义httpd****资源**

以下命令表示定义httpd资源，监控检测间隔时间为30s，超时时长为20s

\[root@cen7 corosync\]\# pcs resource create webserver systemd:httpd op monitor interval=30s timeout=20s

\[root@cen7 corosync\]\# pcs status

Cluster name: mycluster

Stack: corosync

Current DC: node1.field.com (version 1.1.18-11.el7\_5.3-2b07d5c5a9) - partition with quorum

Last updated: Thu Aug  2 11:22:43 2018

Last change: Thu Aug  2 11:22:42 2018 by root via cibadmin on cen7.field.com

3 nodes configured

3 resources configured

Online: \[ cen7.field.com node1.field.com node2.field.com \]

Full list of resources:

webip     (ocf::heartbeat:IPaddr):  Started cen7.field.com

webstore        (ocf::heartbeat:Filesystem):   Started node1.field.com

webserver      (systemd:httpd):      Starting node2.field.com

\#可以看到：webserver资源已经定义成功并且启动在node2节点上

Daemon Status:

corosync: active/disabled

pacemaker: active/disabled

pcsd: active/enabled

**4****）、定义组资源：组中资源会在同一节点运行**

以下命令表示创建webservice组，包含webip、webstore、webserver资源

\[root@cen7 corosync\]\# pcs resource group add webservice webip webstore webserver

**2****、确认高可用集群配置成功与否及其高可用性**

**1****）、查看集群状态：**

\[root@cen7 corosync\]\# pcs status

Cluster name: mycluster

Stack: corosync

Current DC: node1.field.com (version 1.1.18-11.el7\_5.3-2b07d5c5a9) - partition with quorum

Last updated: Thu Aug  2 11:24:01 2018

Last change: Thu Aug  2 11:23:51 2018 by root via cibadmin on cen7.field.com

3 nodes configured

3 resources configured

Online: \[ cen7.field.com node1.field.com node2.field.com \]

Full list of resources:

Resource Group: webservice

webip     (ocf::heartbeat:IPaddr):  Started cen7.field.com

webstore        (ocf::heartbeat:Filesystem):   Started cen7.field.com

webserver      (systemd:httpd):      Started cen7.field.com

\#定义组资源后，所有资源都启动在cen7节点上

Daemon Status:

corosync: active/disabled

pacemaker: active/disabled

pcsd: active/enabled

**2****）、手动使当前节点转为备用状态，验证资源流转**

**命令说明：**

**pcs cluster standby <node>****：可以将当前节点转为备用状态**

**pcs cluster unstandby <node>****：可以将当前节点恢复为在线状态**

\[root@cen7 corosync\]\# pcs cluster standby cen7.field.com

\[root@cen7 corosync\]\# pcs status

Cluster name: mycluster

Stack: corosync

Current DC: node1.field.com (version 1.1.18-11.el7\_5.3-2b07d5c5a9) - partition with quorum

Last updated: Thu Aug  2 11:25:13 2018

Last change: Thu Aug  2 11:25:06 2018 by root via cibadmin on cen7.field.com

3 nodes configured

3 resources configured

Node cen7.field.com: standby

Online: \[ node1.field.com node2.field.com \]

Full list of resources:

Resource Group: webservice

webip     (ocf::heartbeat:IPaddr):  Started node1.field.com

webstore        (ocf::heartbeat:Filesystem):   Started node1.field.com

webserver      (systemd:httpd):      Starting node1.field.com

\#可以看到：资源成功流转到了node1节点

Daemon Status:

corosync: active/disabled

pacemaker: active/disabled

pcsd: active/enabled

**3****）、确认VIP****是否流转成功：node1****上已经启动vip****：192.168.88.188   **

\[root@cen7 corosync\]\# ansible 192.168.88.134 -m shell -a 'ip addr list |grep ens'

192.168.88.134 | SUCCESS | rc=0 >>

2: ens34: <BROADCAST,MULTICAST,UP,LOWER\_UP> mtu 1500 qdisc pfifo\_fast state UP group default qlen 1000

inet 192.168.88.134/24 brd 192.168.88.255 scope global noprefixroute ens34

inet 192.168.88.188/24 brd 192.168.88.255 scope global secondary ens34

**4****）、确认网站页面访问是否能正常：各节点均能成功访问**

\[root@cen7 corosync\]\# ansible hacluster -m shell -a 'curl 192.168.88.188 warn=False'

192.168.88.133 | SUCCESS | rc=0 >>

<h1>hacluster page on NFS Service</h1>  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current

Dload  Upload   Total   Spent    Left  Speed

100    39  100    39    0     0  19345      0 --:--:-- --:--:-- --:--:-- 39000

192.168.88.134 | SUCCESS | rc=0 >>

<h1>hacluster page on NFS Service</h1>  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current

Dload  Upload   Total   Spent    Left  Speed

100    39  100    39    0     0  35583      0 --:--:-- --:--:-- --:--:-- 39000

192.168.88.132 | SUCCESS | rc=0 >>

<h1>hacluster page on NFS Service</h1>  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current

Dload  Upload   Total   Spent    Left  Speed

100    39  100    39    0     0  24405      0 --:--:-- --:--:-- --:--:-- 39000

**5****）、将node1****节点转为备用状态，验证资源流转 **

\[root@cen7 corosync\]\# pcs cluster standby node1.field.com

\[root@cen7 corosync\]\# pcs status

Cluster name: mycluster

Stack: corosync

Current DC: node1.field.com (version 1.1.18-11.el7\_5.3-2b07d5c5a9) - partition with quorum

Last updated: Thu Aug  2 11:40:14 2018

Last change: Thu Aug  2 11:40:02 2018 by root via cibadmin on cen7.field.com

3 nodes configured

3 resources configured

Node cen7.field.com: standby

Node node1.field.com: standby

Online: \[ node2.field.com \]

Full list of resources:

Resource Group: webservice

webip     (ocf::heartbeat:IPaddr):  Started node2.field.com

webstore        (ocf::heartbeat:Filesystem):   Started node2.field.com

webserver      (systemd:httpd):      Starting node2.field.com

\#成功流转到了node2节点上

Daemon Status:

corosync: active/disabled

pacemaker: active/disabled

pcsd: active/enabled

**6****）、恢复节点为在线状态**

\[root@cen7 corosync\]\# pcs cluster unstandby node1.field.com

\[root@cen7 corosync\]\# pcs cluster unstandby cen7.field.com

\[root@cen7 corosync\]\# pcs status

Cluster name: mycluster

Stack: corosync

Current DC: node1.field.com (version 1.1.18-11.el7\_5.3-2b07d5c5a9) - partition with quorum

Last updated: Thu Aug  2 11:40:39 2018

Last change: Thu Aug  2 11:40:36 2018 by root via cibadmin on cen7.field.com

3 nodes configured

3 resources configured

Online: \[ cen7.field.com node1.field.com node2.field.com \]

Full list of resources:

Resource Group: webservice

webip     (ocf::heartbeat:IPaddr):  Started node2.field.com

webstore        (ocf::heartbeat:Filesystem):   Started node2.field.com

webserver      (systemd:httpd):      Started node2.field.com

Daemon Status:

corosync: active/disabled

pacemaker: active/disabled

pcsd: active/enabled

**3****、定义资源约束**** **

**资源约束常见命令说明：**

**pcs constraint****：定义/****查看资源约束pcs constraint --full**

**pcs constraint colocation****：配置资源捆绑关系：指定哪些资源捆绑一起，在同一节点上运行**

**pcs constraint order** **：配置资源启动顺序：指定排列约束中的资源启动顺序**

**pcs constraint location****：配置资源位置约束：指定资源首选在哪些节点上运行，由节点黏性值绝对优先级**

**1****）、指定资源首选在哪些节点上运行：定义单个节点对资源黏性值**

以下命令表示webservice对节点cen7的黏性值为100

\[root@cen7 corosync\]\# pcs constraint location add webservice\_prefer\_cen7 webservice cen7.field.com 100

**查看集群状态：**

\[root@cen7 corosync\]\# pcs status

Cluster name: mycluster

Stack: corosync

Current DC: node1.field.com (version 1.1.18-11.el7\_5.3-2b07d5c5a9) - partition with quorum

Last updated: Thu Aug  2 11:42:57 2018

Last change: Thu Aug  2 11:42:45 2018 by root via cibadmin on cen7.field.com

3 nodes configured

3 resources configured

Online: \[ cen7.field.com node1.field.com node2.field.com \]

Full list of resources:

Resource Group: webservice

webip     (ocf::heartbeat:IPaddr):  Started cen7.field.com

webstore        (ocf::heartbeat:Filesystem):   Started cen7.field.com

webserver      (systemd:httpd):      Starting cen7.field.com

\#定义了资源倾向性后所有资源都启动在了cen7节点上

Daemon Status:

corosync: active/disabled

pacemaker: active/disabled

pcsd: active/enabled

**2****）、定义集群节点默认黏性值 **

**pcs property list****：查看集群属性 **

\[root@cen7 corosync\]\# pcs property list --all | grep default

default-action-timeout: (null)

default-resource-stickiness: (null)

is-managed-default: (null)

placement-strategy: default

以下命令定义各节点黏性值为0

\[root@cen7 corosync\]\# pcs property set default-resource-stickiness=0

\[root@cen7 corosync\]\# pcs property list --all | grep default-resource-stickiness

default-resource-stickiness: 0

\[root@cen7 corosync\]\# ip addr list| grep ens

2: ens32: <BROADCAST,MULTICAST,UP,LOWER\_UP> mtu 1500 qdisc pfifo\_fast state UP group default qlen 1000

inet 192.168.88.132/24 brd 192.168.88.255 scope global noprefixroute ens32

inet 192.168.88.188/24 brd 192.168.88.255 scope global secondary ens32

\[root@cen7 corosync\]\# curl 192.168.88.188

<h1>hacluster page on NFS Service</h1>

[pcs_Corosync_pacemaker]: https://blog.csdn.net/Field_Yang/article/details/81434710
[Corosync_pacemaker_nfs_httpd_web]: https://blog.csdn.net/Field_Yang/article/details/81571404

Corosync+Pacemaker+NFS+Httpd高可用web集群部署

发表评论取消回复

还没有评论，来说两句吧...

相关阅读

相关 Redis集群高可用

相关 Rabbitmq集群高可用

相关 Corosync+Pacemaker+NFS+Httpd高可用web集群部署

相关 Corosync+Pacemaker+NFS+Httpd高可用web集群部署

相关学习笔记：docker部署高可用MySQL集群

相关多节点高可用Eureka集群配置与部署

相关使用kubespray部署高可用kubernetes集群

相关 Keepalived+Nginx+Tomcat 实现高可用Web集群

相关高可用 kubernetes 集群部署实践

相关 keepalived+Haproxy搭建高可用Web群集