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=Installation=
 
=Installation=
−
==[ALL] installation pacemaker==
+
==[ALL] Initial setup==
−
  sudo apt-get install pacemaker
+
Install required packages:
−
  edit /etc/default/corosync and enable corosync (START=yes)
+
  sudo apt-get install pacemaker cman resource-agents fence-agents gfs2-utils gfs2-cluster ocfs2-tools-cman openais drbd8-utils
−
==[ONE] generate corosync authkey==
+
   
−
sudo corosync-keygen
+
Make sure each host can resolve all other hosts. Best way to achive this is by adding their IPs and hostnames to /etc/hosts on all nodes. In this example, that would be:
−
(this can take a while if there's no enough entropy; download ubuntu iso image on the same machine while generating to speed it up or use keyboard to generate entropy)
 
−
copy /etc/corosync/authkey to all servers that will form this cluster (make sure it is owned by root:root and has 400 permissions).
 
−
==[ALL] configure corosync==
 
−
In /etc/corosync/corosync.conf, replace bindnetaddr (by default it is 127.0.0.1), with the network address
 
−
of your server,  replacing the last number by 0 to get the network address. For example, if your IP is
 
−
192.168.1.101, then you would put 192.168.1.0.
 
−
==ALL hab ich gefunden? kein plan ob da das vermisste paket dabei is===
 
−
apt-get install drbd8-utils iscsitarget ocfs2-tools pacemaker corosync libdlm3 openais \
 
−
ocfs2-tools-pacemaker iscsitarget-dkms lm-sensors ocfs2-tools-cman resource-agents fence-agents
 
  
−
  for X in {drbd,o2cb,ocfs2}; do update-rc.d -f ${X} disable; done
+
  eth0
−
  ---------
+
192.168.244.161 fix
−
  die beiden fehlen - libdlm3-pacemaker dlm-pcmk
+
192.168.244.162 foxy
 +
  eth1
 +
  10.168.244.161  fix-ha
 +
  10.168.244.162  foxy-ha
  
−
==[ALL] start corosync==
+
Disable o2cb from starting:
−
sudo /etc/init.d/corosync start
+
 
−
==[ALL] Install DRBD and other needed tools==
+
update-rc.d -f o2cb remove
−
  sudo apt-get install linux-headers-server psmisc drbd8-utils
+
 
−
==[ALL] Pacemaker soll drbd managen==
+
==[ALL] Create /etc/cluster/cluster.conf==
−
  sudo update-rc.d -f drbd remove
+
Paste this into '''/etc/cluster/cluster.conf'''  :
−
=CRM=
+
−
==crm==
+
<?xml version="1.0"?>
−
==crm_mon==
+
<cluster config_version="1" name="pacemaker">
−
==cibadmin==
+
<cman two_node="1" expected_votes="1"> </cman>
−
===Kompelette CIB löschen===
+
    <fence_daemon clean_start="0" post_fail_delay="0" post_join_delay="3"/>
−
  cibadmin --force -E
+
    <clusternodes>
 +
            <clusternode name="fix" nodeid="1" votes="1">
 +
                <fence>
 +
                        <method name="pcmk-redirect">
 +
                                <device name="pcmk" port="fix"/>
 +
                        </method>
 +
                </fence>
 +
            </clusternode>
 +
            <clusternode name="foxy" nodeid="2" votes="1">
 +
                <fence>
 +
                        <method name="pcmk-redirect">
 +
                                <device name="pcmk" port="foxy"/>
 +
                        </method>
 +
                </fence>
 +
            </clusternode>
 +
    </clusternodes>
 +
  <fencedevices>
 +
    <fencedevice name="pcmk" agent="fence_pcmk"/>
 +
  </fencedevices>
 +
</cluster>
 +
 
 +
Validate the config
 +
# ccs_config_validate
 +
Configuration validates
 +
 
 +
==[ALL] Edit /etc/corosync/corosync.conf==
 +
 
 +
Find pacemaker service in /etc/corosync/corosync.conf and bump version to 1:
 +
 
 +
service {
 +
        # Load the Pacemaker Cluster Resource Manager
 +
        ver:      1
 +
        name:      pacemaker
 +
}
 +
 
 +
Replace bindnetaddr with the IP of your network. For example:
 +
 
 +
                bindnetaddr: 10.168.244.0
 +
 
 +
'0' is not a typo.
 +
 
 +
==[ALL] Enable pacemaker init scripts==
 +
 
 +
update-rc.d -f pacemaker remove
 +
update-rc.d pacemaker start 50 1 2 3 4 5 . stop 01 0 6 .
 +
==[ALL] Start cman service and then pacemaker service==
 +
deactivat quorum
 +
# echo CMAN_QUORUM_TIMEOUT=0 >> /etc/default/cman
 +
start cman
 +
# service cman start
 +
Starting cluster:
 +
    Checking if cluster has been disabled at boot... [  OK  ]
 +
    Checking Network Manager... [  OK  ]
 +
    Global setup... [  OK  ]
 +
    Loading kernel modules... [  OK  ]
 +
    Mounting configfs... [  OK  ]
 +
    Starting cman... [  OK  ]
 +
    Waiting for quorum... [  OK  ]
 +
    Starting fenced... [  OK  ]
 +
    Starting dlm_controld... [  OK  ]
 +
    Unfencing self... [  OK  ]
 +
    Joining fence domain... [  OK  ]
 +
 
 +
 
 +
# cman_tool nodes
 +
  Node  Sts  Inc  Joined              Name
 +
    1  M      4  2012-09-11 19:14:58  fix
 +
    2  M      8  2012-09-11 19:18:35  foxy
 +
 
 +
 
 +
==[ALL] Enable pacemaker init scripts==
 +
 
 +
  update-rc.d -f pacemaker remove
 +
update-rc.d pacemaker start 50 1 2 3 4 5 . stop 01 0 6 .
 +
 
 +
 
 +
service pacemaker start
 +
Starting Pacemaker Cluster Manager: [  OK  ]
 +
 
 +
==[ONE] Setup resources==
 +
Wait for a minute until pacemaker declares all nodes online:
 +
# crm status
 +
============
 +
Last updated: Fri Sep  7 21:18:12 2012
 +
Last change: Fri Sep  7 21:17:17 2012 via crmd on fix
 +
Stack: cman
 +
Current DC: fix - partition with quorum
 +
Version: 1.1.6-9971ebba4494012a93c03b40a2c58ec0eb60f50c
 +
2 Nodes configured, unknown expected votes
 +
0 Resources configured.
 +
============
 +
 +
Online: [ fix foxy ]
 +
 
 +
==[[OCSF2 WAY]]==
 +
==[[GFS2 WAY]]==
 +
==[[CRM/CIB]]==
 +
 
 +
==[ALL] install services that will fail over between servers==
 +
In this example, I'm installing apache2
 +
sudo apt-get install apache2
 +
Disable their init scripts:
 +
update-rc.d -f apache2 remove
 +
In this example, I'll create failover for the apache2. I'll also add one additional and tie apache2.
 +
sudo crm configure edit
 +
primitive resAPACHE ocf:heartbeat:apache \
 +
        params configfile="/etc/apache2/apache2.conf" httpd="/usr/sbin/apache2" \
 +
        op monitor interval="5s"
 +
primitive resIP-APACHE ocf:heartbeat:IPaddr2 \
 +
        params ip="192.168.244.171" cidr_netmask="21" nic="eth0
 +
group groupAPACHE resIP-APACHE resAPACHE
 +
  order apache_after_ip inf: resIP-APACHE:start resAPACHE:start
 +
 
 +
=Links=
 +
*http://www.linux-magazin.de/Online-Artikel/GFS2-und-OCFS2-zwei-Cluster-Dateisysteme-im-Linux-Kernel
 +
*https://wiki.ubuntu.com/ClusterStack/Precise
 +
*https://wiki.ubuntu.com/ClusterStack/LucidTesting
 +
*http://www.clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Clusters_from_Scratch
 +
*http://www.drbd.org/users-guide/
 +
*http://wiki.techstories.de/display/IT/Pacemaker+HA-Cluster+Schulung+GFU+Koeln
 +
*http://theclusterguy.clusterlabs.org/post/907043024/introducing-the-pacemaker-master-control-process-for
 +
*http://www.hastexo.com/resources/hints-and-kinks/fencing-libvirtkvm-virtualized-cluster-nodes
 +
*http://linux.die.net/man/5/cluster.conf
 +
*http://burning-midnight.blogspot.de/2012/05/cluster-building-ubuntu-1204.html
 +
*http://burning-midnight.blogspot.de/2012/07/cluster-building-ubuntu-1204-revised.html
 +
*http://www.hastexo.com/resources/hints-and-kinks/ocfs2-pacemaker-debianubuntu
 +
*http://www.gossamer-threads.com/lists/drbd/users/23267
 +
*http://blog.simon-meggle.de/tutorials/score-berechnung-im-pacemaker-cluster-teil-1/
 +
*http://www.clusterlabs.org/doc/en-US/Pacemaker/1.0/html/Pacemaker_Explained/s-cluster-options.html
 +
*http://www.clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Pacemaker_Explained/s-ocf-return-codes.html
 +
*https://aseith.com/plugins/viewsource/viewpagesrc.action?p
 +
*http://publications.jbfavre.org/virtualisation/cluster-xen-corosync-pacemaker-drbd-ocfs2.enageId=9601113
 +
*http://www.youtube.com/watch?v=3GoT36cK6os&feature=youtu.be
 +
*http://www.debian-administration.org/articles/578
 +
*http://blog.datentraeger.li/?cat=31
 +
*http://publications.jbfavre.org/virtualisation/cluster-xen-corosync-pacemaker-drbd-ocfs2.en

Aktuelle Version vom 29. Januar 2013, 11:21 Uhr

Installation

[ALL] Initial setup

Install required packages: 

sudo apt-get install pacemaker cman resource-agents fence-agents gfs2-utils gfs2-cluster ocfs2-tools-cman openais drbd8-utils

Make sure each host can resolve all other hosts. Best way to achive this is by adding their IPs and hostnames to /etc/hosts on all nodes. In this example, that would be: 

eth0
192.168.244.161 fix
192.168.244.162 foxy
eth1
10.168.244.161   fix-ha
10.168.244.162   foxy-ha

Disable o2cb from starting: 

update-rc.d -f o2cb remove

[ALL] Create /etc/cluster/cluster.conf

Paste this into /etc/cluster/cluster.conf : 

<?xml version="1.0"?>
<cluster config_version="1" name="pacemaker">
<cman two_node="1" expected_votes="1"> </cman>
   <fence_daemon clean_start="0" post_fail_delay="0" post_join_delay="3"/>
   <clusternodes>
           <clusternode name="fix" nodeid="1" votes="1">
               <fence>
                       <method name="pcmk-redirect">
                               <device name="pcmk" port="fix"/>
                       </method>
               </fence>
           </clusternode>
           <clusternode name="foxy" nodeid="2" votes="1">
               <fence>
                       <method name="pcmk-redirect">
                               <device name="pcmk" port="foxy"/>
                       </method>
               </fence>
           </clusternode>
   </clusternodes>
 <fencedevices>
   <fencedevice name="pcmk" agent="fence_pcmk"/>
 </fencedevices>
</cluster>

Validate the config 

# ccs_config_validate 
Configuration validates

[ALL] Edit /etc/corosync/corosync.conf

Find pacemaker service in /etc/corosync/corosync.conf and bump version to 1: 

service {
        # Load the Pacemaker Cluster Resource Manager
        ver:       1
        name:      pacemaker
}

Replace bindnetaddr with the IP of your network. For example: 

                bindnetaddr: 10.168.244.0

'0' is not a typo.

[ALL] Enable pacemaker init scripts

update-rc.d -f pacemaker remove
update-rc.d pacemaker start 50 1 2 3 4 5 . stop 01 0 6 .

[ALL] Start cman service and then pacemaker service

deactivat quorum 

# echo CMAN_QUORUM_TIMEOUT=0 >> /etc/default/cman

start cman 

# service cman start
Starting cluster: 
   Checking if cluster has been disabled at boot... [  OK  ]
   Checking Network Manager... [  OK  ]
   Global setup... [  OK  ]
   Loading kernel modules... [  OK  ]
   Mounting configfs... [  OK  ]
   Starting cman... [  OK  ]
   Waiting for quorum... [  OK  ]
   Starting fenced... [  OK  ]
   Starting dlm_controld... [  OK  ]
   Unfencing self... [  OK  ]
   Joining fence domain... [  OK  ]



# cman_tool nodes
Node  Sts   Inc   Joined               Name
   1   M      4   2012-09-11 19:14:58  fix
   2   M      8   2012-09-11 19:18:35  foxy


[ALL] Enable pacemaker init scripts

update-rc.d -f pacemaker remove
update-rc.d pacemaker start 50 1 2 3 4 5 . stop 01 0 6 .



service pacemaker start
Starting Pacemaker Cluster Manager: [  OK  ]

[ONE] Setup resources

Wait for a minute until pacemaker declares all nodes online:
# crm status
============
Last updated: Fri Sep  7 21:18:12 2012
Last change: Fri Sep  7 21:17:17 2012 via crmd on fix
Stack: cman
Current DC: fix - partition with quorum
Version: 1.1.6-9971ebba4494012a93c03b40a2c58ec0eb60f50c
2 Nodes configured, unknown expected votes
0 Resources configured.
============ 

Online: [ fix foxy ]

OCSF2 WAY

GFS2 WAY

CRM/CIB

[ALL] install services that will fail over between servers

In this example, I'm installing apache2 

sudo apt-get install apache2

Disable their init scripts: 

update-rc.d -f apache2 remove

In this example, I'll create failover for the apache2. I'll also add one additional and tie apache2. 

sudo crm configure edit
primitive resAPACHE ocf:heartbeat:apache \
       params configfile="/etc/apache2/apache2.conf" httpd="/usr/sbin/apache2" \
       op monitor interval="5s"
primitive resIP-APACHE ocf:heartbeat:IPaddr2 \
       params ip="192.168.244.171" cidr_netmask="21" nic="eth0
group groupAPACHE resIP-APACHE resAPACHE
order apache_after_ip inf: resIP-APACHE:start resAPACHE:start

Links

Abgerufen von „http://wiki.ixheim.de/index.php?title=PACEMAKER&oldid=3202“