ansible

[root@station20 /]# export LANG=en
[root@station20 /]# tree /ansible/ # 注释：环境配置很重要
/ansible/
`-- corosync
|-- conf
| |-- authkey
| `-- corosync.conf
|-- corosync.yaml
`-- packages
|-- crmsh-1.2.6-4.el6.x86_64.rpm
`-- pssh-2.3.1-2.el6.x86_64.rpm

3 directories, 5 files

[root@station20 corosync]# pwd
/ansible/corosync
[root@station20 corosync]# ls
conf corosync.yaml packages

root@station20 corosync]# ls packages/
crmsh-1.2.6-4.el6.x86_64.rpm pssh-2.3.1-2.el6.x86_64.rpm
[root@station20 corosync]# ls conf/
authkey corosync.conf

[root@station20 corosync]# cat corosync.yaml # 查看ansible脚本文件
- hosts: all # hosts ： ansible 配置文件hosts中的配置我们这里的配置是：如下
remote_user: root
vars:
crmsh: crmsh-1.2.6-4.el6.x86_64.rpm
pssh: pssh-2.3.1-2.el6.x86_64.rpm
tasks:
- name: corosync installing
yum: name=corosync state=present
- name: pacemaker installing
yum: name=pacemaker state=present
- name: crmsh rpm packages
copy: src=/ansible/corosync/packages/{{ crmsh }} dest=/tmp/{{ crmsh }}
- name: pssh rpm packages
copy: src=/ansible/corosync/packages/{{ pssh }} dest=/tmp/{{ pssh }}
- name: crmsh installing
command: yum -y install /tmp/{{ crmsh }} /tmp/{{ pssh }}
- name: authkey configure file
copy: src=/ansible/corosync/conf/authkey dest=/etc/corosync/authkey
- name: authkey mode 400
file: path=/etc/corosync/authkey mode=400
notify:
- restart corosync
- name: corosync.conf configure file
copy: src=/ansible/corosync/conf/corosync.conf dest=/etc/corosync/corosync.conf
tags:
- conf
notify:
- restart corosync
- name: ensure the corosync service startup on boot
service: name=corosync state=started enabled=yes
handlers:
- name: restart corosync
service: name=corosync state=restarted

[root@station20 corosync]# cat /etc/ansible/hosts # ansible配置文件
# This is the default ansible 'hosts' file.
#
# It should live in /etc/ansible/hosts
#
# - Comments begin with the '#' character
# - Blank lines are ignored
# - Groups of hosts are delimited by [header] elements
# - You can enter hostnames or ip addresses
# - A hostname/ip can be a member of multiple groups

# Ex 1: Ungrouped hosts, specify before any group headers.

#green.example.com
#blue.example.com
#192.168.100.1
#192.168.100.10

# Ex 2: A collection of hosts belonging to the 'webservers' group

#[webservers]
#alpha.example.org
#beta.example.org
#192.168.1.100
#192.168.1.110

# If you have multiple hosts following a pattern you can specify
# them like this:

#www[001:006].example.com

# Ex 3: A collection of database servers in the 'dbservers' group

#[dbservers]

#db01.intranet.mydomain.net
#db02.intranet.mydomain.net
#10.25.1.56
#10.25.1.57

# Here's another example of host ranges, this time there are no
# leading 0s:

#db-[99:101]-node.example.com
[webservers]
node4.firefox.com
node5.firefox.com

执行脚本：

2014-04-20[root@station20 ~]# cd /ansible/corosync/
[root@station20 corosync]# ansible-playbook  corosync.yaml 

PLAY [all] ******************************************************************** 

GATHERING FACTS *************************************************************** 
ok: [node4.firefox.com]
ok: [node5.firefox.com]

TASK: [corosync installing] *************************************************** 
changed: [node5.firefox.com]
changed: [node4.firefox.com]

TASK: [pacemaker installing] ************************************************** 
changed: [node5.firefox.com]
changed: [node4.firefox.com]

TASK: [crmsh rpm packages] **************************************************** 
changed: [node5.firefox.com]
changed: [node4.firefox.com]

TASK: [pssh rpm packages] ***************************************************** 
changed: [node4.firefox.com]
changed: [node5.firefox.com]

TASK: [crmsh installing] ****************************************************** 
changed: [node5.firefox.com]
changed: [node4.firefox.com]

TASK: [authkey configure file] ************************************************ 
changed: [node5.firefox.com]
changed: [node4.firefox.com]

TASK: [authkey mode 400] ****************************************************** 
changed: [node4.firefox.com]
changed: [node5.firefox.com]

TASK: [corosync.conf configure file] ****************************************** 
changed: [node4.firefox.com]
changed: [node5.firefox.com]

TASK: [ensure the corosync service startup on boot] *************************** 
changed: [node5.firefox.com]
changed: [node4.firefox.com]

NOTIFIED: [restart corosync] ************************************************** 
changed: [node5.firefox.com]
changed: [node4.firefox.com]

PLAY RECAP ******************************************************************** 
node4.firefox.com          : ok=11   changed=10   unreachable=0    failed=0   
node5.firefox.com          : ok=11   changed=10   unreachable=0    failed=0

使用crm定义linux高可用集群：

crm(live)configure# property  stonith-enabled=false
crm(live)configure# verify 
crm(live)configure# commit 
crm(live)configure# property no-quorum-policy=ignore
crm(live)configure# verify 
crm(live)configure# commit 
crm(live)configure# show 
node node4.firefox.com
node node5.firefox.com
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# rsc_defaults  resource-stickiness=100
crm(live)configure# verify 
crm(live)configure# commit 
crm(live)configure# primitive webip ocf:heartbeat:IPaddr2 params  ip=172.16.149.00 op monitor  interval=5s timeout=20s no-fail=restart
crm(live)configure# verify 
crm(live)configure# primitive  webstore ocf:heartbeat:Filesystem params device="172.16.249.168:/www/htdoc" directory="/var/www/html" fstype="nfs" op monitor interval=20s timeout=60s op start timeout=60s op stop  timeout=60s  on-fail=restart
crm(live)configure# verify 
crm(live)configure# primitive  webserver lsb:httpd  op  monitor  interval=30s timeout=20s on-fail=restart
crm(live)configure# verify 
crm(live)configure# group  webservice webip webstore  webserver 
crm(live)configure# show 
node node4.firefox.com
node node5.firefox.com
primitive webip ocf:heartbeat:IPaddr2 \
    params ip="172.16.149.200" \
    op monitor interval="5s" timeout="20s" no-fail="restart"
primitive webserver lsb:httpd \
    op monitor interval="30s" timeout="20s" on-fail="restart"
primitive webstore ocf:heartbeat:Filesystem \
    params device="172.16.249.168:/www/htdoc" directory="/var/www/html" fstype="nfs" \
    op monitor interval="20s" timeout="60s" \
    op start timeout="60s" interval="0" \
    op stop timeout="60s" on-fail="restart" interval="0"
group webservice webip webstore webserver
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"
rsc_defaults $id="rsc-options" \
    resource-stickiness="100"
crm(live)configure# show xml 
<?xml version="1.0" ?>
<cib num_updates="5" dc-uuid="node5.firefox.com" update-origin="node5.firefox.com" crm_feature_set="3.0.7" validate-with="pacemaker-1.2" update-client="cibadmin" epoch="8" admin_epoch="0" cib-last-written="Sat Apr 19 19:42:12 2014" have-quorum="1">
  <configuration>
    <crm_config>
      <cluster_property_set id="cib-bootstrap-options">
        <nvpair id="cib-bootstrap-options-dc-version" name="dc-version" value="1.1.10-14.el6-368c726"/>
        <nvpair id="cib-bootstrap-options-cluster-infrastructure" name="cluster-infrastructure" value="classic openais (with plugin)"/>
        <nvpair id="cib-bootstrap-options-expected-quorum-votes" name="expected-quorum-votes" value="2"/>
        <nvpair name="stonith-enabled" value="false" id="cib-bootstrap-options-stonith-enabled"/>
        <nvpair name="no-quorum-policy" value="ignore" id="cib-bootstrap-options-no-quorum-policy"/>
      </cluster_property_set>
    </crm_config>
    <nodes>
      <node id="node4.firefox.com" uname="node4.firefox.com"/>
      <node id="node5.firefox.com" uname="node5.firefox.com"/>
    </nodes>
    <resources>
      <group id="webservice">
        <primitive id="webip" class="ocf" provider="heartbeat" type="IPaddr2">
          <instance_attributes id="webip-instance_attributes">
            <nvpair name="ip" value="172.16.149.200" id="webip-instance_attributes-ip"/>
          </instance_attributes>
          <operations>
            <op name="monitor" interval="5s" timeout="20s" id="webip-monitor-5s">
              <instance_attributes id="webip-monitor-5s-instance_attributes">
                <nvpair name="no-fail" value="restart" id="webip-monitor-5s-instance_attributes-no-fail"/>
              </instance_attributes>
            </op>
          </operations>
        </primitive>
        <primitive id="webstore" class="ocf" provider="heartbeat" type="Filesystem">
          <instance_attributes id="webstore-instance_attributes">
            <nvpair name="device" value="172.16.249.168:/www/htdoc" id="webstore-instance_attributes-device"/>
            <nvpair name="directory" value="/var/www/html" id="webstore-instance_attributes-directory"/>
            <nvpair name="fstype" value="nfs" id="webstore-instance_attributes-fstype"/>
          </instance_attributes>
          <operations>
            <op name="monitor" interval="20s" timeout="60s" id="webstore-monitor-20s"/>
            <op name="start" timeout="60s" interval="0" id="webstore-start-0"/>
            <op name="stop" timeout="60s" on-fail="restart" interval="0" id="webstore-stop-0"/>
          </operations>
        </primitive>
        <primitive id="webserver" class="lsb" type="httpd">
          <operations>
            <op name="monitor" interval="30s" timeout="20s" on-fail="restart" id="webserver-monitor-30s"/>
          </operations>
        </primitive>
      </group>
    </resources>
    <constraints/>
    <rsc_defaults>
      <meta_attributes id="rsc-options">
        <nvpair name="resource-stickiness" value="100" id="rsc-options-resource-stickiness"/>
      </meta_attributes>
    </rsc_defaults>
  </configuration>
</cib>
(END)

crm(live)configure# order webip_before_webstore_webserver mandatory: webip webstore webserver
crm(live)configure# verify
crm(live)configure# show xml

<?xml version="1.0" ?>

[root@node5 ~]# crm
crm(live)# status
Last updated: Sat Apr 19 20:57:02 2014
Last change: Sat Apr 19 20:51:14 2014 via cibadmin on node5.firefox.com
Stack: classic openais (with plugin)
Current DC: node5.firefox.com - partition with quorum
Version: 1.1.10-14.el6-368c726
2 Nodes configured, 2 expected votes
3 Resources configured

Online: [ node4.firefox.com node5.firefox.com ]

Resource Group: webservice
webip (ocf::heartbeat:IPaddr2): Started node5.firefox.com
webstore (ocf::heartbeat:Filesystem): Started node5.firefox.com

webserver (lsb:httpd): Started node5.firefox.com

[root@node5 ~]# crm node standby node5.firefox.com
[root@node5 ~]# crm status
Last updated: Sat Apr 19 21:00:45 2014
Last change: Sat Apr 19 21:00:40 2014 via crm_attribute on node5.firefox.com
Stack: classic openais (with plugin)
Current DC: node5.firefox.com - partition with quorum
Version: 1.1.10-14.el6-368c726
2 Nodes configured, 2 expected votes
3 Resources configured

Node node5.firefox.com: standby
Online: [ node4.firefox.com ]

Resource Group: webservice
webip (ocf::heartbeat:IPaddr2): Started node4.firefox.com
webstore (ocf::heartbeat:Filesystem): Started node4.firefox.com
webserver (lsb:httpd): Started node4.firefox.com