Методические материалы Лохтурова Вячеслава

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====== Пакет Pacemaker ======

  * [[https://habrahabr.ru/post/107837/|Linux HA на основе Pacemaker]]
  * [[http://wiki.525.su/doku.php?id=pacemaker_theory|Pacemaker, теория]]
  * [[https://wiki.clusterlabs.org/wiki/Example_configurations|Example configurations]]
===== Установка ПО для связи узлов кластера =====

  * [[Пакет Corosync]]


===== Установка менеджера ресурсов кластера =====
<code>
nodeN# apt install pacemaker

nodeN# crm_mon -1
</code>

===== Управление конфигурацией =====
<code>
node1# apt install crmsh

node1# crm status

node1# crm configure show

node1# crm configure
</code><code>
property no-quorum-policy=ignore

# pacemaker 2.X, need stonith
# попробовать:
# primitive st-null stonith:null params hostlist="node1 node2"
# clone fencing st-null

primitive st-ssh stonith:external/ssh params hostlist="node1.corpX.un node2.corpX.un"
clone fencing st-ssh

show
commit
exit
</code><code>
nodeN# find /var/lib/pacemaker/cib/
</code>

===== Управление ресурсами=====

**Resource Agents** 

  * [[https://linux.die.net/man/8/crm_resource|crm_resource(8) - Linux man page]]


==== Создание ресурсов ====
<code>
node1# crm ra classes

node1# crm ra list lsb

node1# crm ra list systemd

node1# crm ra list ocf heartbeat

node1# less /usr/lib/ocf/resource.d/heartbeat/IPaddr2

node1# crm configure 
crm(live)configure# primitive pr_ftp lsb:proftpd
crm(live)configure# primitive pr_ip ocf:heartbeat:IPaddr2 params ip=192.168.X.10 cidr_netmask=32 nic=eth0
crm(live)configure# group gr_ftp_ip pr_ftp pr_ip

crm(live)configure# edit gr_ftp_ip

crm(live)configure# show

crm(live)configure# commit
crm(live)configure# exit

node1# crm status
</code>

==== Перемещение ресурсов  ====

<code>
node1# crm resource
crm(live)resource# locate gr_ftp_ip
crm(live)resource# exit
или
node1# crm resource locate gr_ftp_ip

node1# crm configure show


node1# crm resource move gr_ftp_ip node2.corpX.un
или
node1# crm resource move pr_ftp node2.corpX.un


node1# crm configure show


node1# crm configure delete cli-prefer-gr_ftp_ip
или
node1# crm configure delete cli-prefer-pr_ftp
или
node1# crm resource unmigrate gr_ftp_ip
или
node1# crm resource unmigrate pr_ftp
</code>

==== Удаление ресурсов  ====

<code>
node1# crm configure show

node1# crm resource stop gr_ftp_ip

node1# crm configure delete gr_ftp_ip pr_ftp pr_ip

node1# crm resource stop st-ssh

node1# crm configure delete st-ssh
</code>

===== Отладка =====
<code>
# crm resource cleanup pr_fs_r0

# stonith_admin -c -H node2.corpX.un

pacemaker# crm_resource -C

# tail -f /var/log/pacemaker/pacemaker.log
</code>

===== Очистка конфигурации =====
<code>
node1:~# cibadmin -E --force

nodeN:~# init 6
</code>
====== Дополнительные материалы ======

==== Debian 9 ====
<code>
# pacemaker 1.X ()
property stonith-enabled=false
property default-resource-stickiness=100
</code>
Методические материалы Лохтурова Вячеслава

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