RHCS(二)之quorum机制测试(阶段一、二)

四、测试

调试工具:

cman_toolclustatclusvadminit 0

测试目的:

1.实现资源转移

2.探究quorum机制和fence机制

 

测试思路:

不开启qdiskd服务,查看quorum票数,逐个节点关机/模拟宕机,看日志、看quorum

开启qdiskd服务,查看quorum票数,逐个节点关机/模拟宕机,看日志、看quorum

 

阶段一:(移除非资源节点)

所有节点处于正常状态,资源运行在web3节点,没有开启qdisk

 

[root@web1 ~]# clustat

Cluster Status for mycluster @ Mon Sep 22 21:44:07 2014

Member Status: Quorate

 

 Member Name                        ID   Status

 ------ ----                        ---- ------

 web1.rocker.com                        1 Online, Local,rgmanager

 web2.rocker.com                        2 Online, rgmanager

 web3.rocker.com                        3 Online, rgmanager

 web4.rocker.com                        4 Online, rgmanager

 

 Service Name              Owner (Last)              State        

 ------- ----              ----- ------              -----        

 service:myservice         web3.rocker.com           started

 

[root@web1 ~]# cman_tool status

……

Nodes: 4

Expected votes: 8

Total votes: 8

Node votes: 2

Quorum: 5    

#可见Quorum=(Total votes/Nodes)+1,资料说一旦小于这个值,cluster就会挂起,我们试一下是不是这样

……

 

=====Step1:对�b攀��2节点进行关机操作=====

[root@web1 ~]# ssh root@web2 'halt'

 

查看日志

[root@web1 ~]# tail /var/log/message

Sep 22 21:49:59 web1 clurgmgrd[4807]: <notice> Member 2 shuttingdown

Sep 22 21:50:17 web1 openais[4555]: [TOTEM] The token was lost in theOPERATIONAL state.

Sep 22 21:50:17 web1 openais[4555]: [TOTEM] Receive multicast socketrecv buffer size (320000 bytes).

Sep 22 21:50:17 web1 openais[4555]: [TOTEM] Transmit multicast socketsend buffer size (221184 bytes).

Sep 22 21:50:17 web1 openais[4555]: [TOTEM] entering GATHER state from2.

Sep 22 21:50:29 web1 openais[4555]: [TOTEM] entering GATHER state from0.

Sep 22 21:50:29 web1 openais[4555]: [TOTEM] Creating commit tokenbecause I am the rep.

Sep 22 21:50:29 web1 openais[4555]: [TOTEM] Storing new sequence id forring 14

Sep 22 21:50:29 web1 openais[4555]: [TOTEM] entering COMMIT state.

Sep 22 21:50:30 web1 openais[4555]: [TOTEM] entering RECOVERY state.

Sep 22 21:50:30 web1 openais[4555]: [TOTEM] position [0] member192.168.1.201:

Sep 22 21:50:30 web1 openais[4555]: [TOTEM] previous ring seq 16 rep192.168.1.201

Sep 22 21:50:30 web1 openais[4555]: [TOTEM] aru bc high delivered bcreceived flag 1

Sep 22 21:50:30 web1 openais[4555]: [TOTEM] position [1] member192.168.1.203:

Sep 22 21:50:30 web1 openais[4555]: [TOTEM] previous ring seq 16 rep192.168.1.201

Sep 22 21:50:30 web1 openais[4555]: [TOTEM] aru bc high delivered bcreceived flag 1

Sep 22 21:50:30 web1 openais[4555]: [TOTEM] position [2] member192.168.1.204:

Sep 22 21:50:30 web1 openais[4555]: [TOTEM] previous ring seq 16 rep192.168.1.201

Sep 22 21:50:31 web1 openais[4555]: [TOTEM] aru bc high delivered bcreceived flag 1

Sep 22 21:50:31 web1 openais[4555]: [TOTEM] Did not need to originateany messages in recovery.

Sep 22 21:50:31 web1 openais[4555]: [TOTEM] Sending initial ORF token

Sep 22 21:50:31 web1 last message repeated 2 times

Sep 22 21:50:32 web1 openais[4555]: [CLM  ] CLM CONFIGURATION CHANGE

Sep 22 21:50:32 web1 openais[4555]: [CLM  ] New Configuration:

Sep 22 21:50:32 web1 openais[4555]: [CLM  ]       r(0)ip(192.168.1.201) 

Sep 22 21:50:32 web1 openais[4555]: [CLM  ]       r(0)ip(192.168.1.203) 

Sep 22 21:50:32 web1 openais[4555]: [CLM  ]       r(0)ip(192.168.1.204) 

Sep 22 21:50:32 web1 openais[4555]: [CLM  ] Members Left:

Sep 22 21:50:32 web1 openais[4555]: [CLM  ]       r(0)ip(192.168.1.202) 

Sep 22 21:50:32 web1 openais[4555]: [CLM  ] Members Joined:

Sep 22 21:50:32 web1 openais[4555]: [CLM  ] CLM CONFIGURATION CHANGE

Sep 22 21:50:32 web1 openais[4555]: [CLM  ] New Configuration:

Sep 22 21:50:32 web1 openais[4555]: [CLM  ]       r(0)ip(192.168.1.201) 

Sep 22 21:50:32 web1 openais[4555]: [CLM  ]       r(0)ip(192.168.1.203) 

Sep 22 21:50:32 web1 openais[4555]: [CLM  ]       r(0)ip(192.168.1.204) 

Sep 22 21:50:32 web1 kernel: dlm: closing connection to node 2

Sep 22 21:50:32 web1 openais[4555]: [CLM  ] Members Left:

Sep 22 21:50:32 web1 openais[4555]: [CLM  ] Members Joined:

Sep 22 21:50:32 web1 openais[4555]: [SYNC ] This node is within theprimary component and will provide service.

Sep 22 21:50:32 web1 openais[4555]: [TOTEM] entering OPERATIONAL state.

Sep 22 21:50:32 web1openais[4555]: [CLM  ] got nodejoinmessage 192.168.1.201

Sep 22 21:50:32 web1openais[4555]: [CLM  ] got nodejoinmessage 192.168.1.203

Sep 22 21:50:32 web1openais[4555]: [CLM  ] got nodejoinmessage 192.168.1.204

Sep 22 21:50:32 web1openais[4555]: [CPG  ] got joinlistmessage from node 4

Sep 22 21:50:32 web1openais[4555]: [CPG  ] got joinlistmessage from node 1

Sep 22 21:50:32 web1openais[4555]: [CPG  ] got joinlistmessage from node 3

#表示重新定义成员

 

查看成员

[root@web1 ~]# clustat

Cluster Status for mycluster @ Mon Sep 22 21:50:54 2014

Member Status: Quorate #表示集群可用状态

 

 Member Name                                     ID   Status

 ------ ----                                     ----------

 web1.rocker.com                                     1 Online,Local, rgmanager

 web2.rocker.com                                     2 Offline

 web3.rocker.com                                     3 Online,rgmanager

 web4.rocker.com                                     4 Online, rgmanager

 

 Service Name                           Owner (Last)                           State        

 ------- ----                           ----- ------                           -----        

 service:myservice                      web3.rocker.com                        started      

 

查看quorum

[root@web1 ~]# cman_tool status

……

Nodes: 3

Expected votes: 8

Total votes: 6

Node votes: 2

Quorum: 4 

……

#对比关机前的quorumTotal votes=8Quorum=5;可见,现在Total vote=6,少了web22票,但是quorum是重新计算的,就是说quorum是浮动的。

 

 

=====Step2:对web4节点进行关机操作=====

[root@web1 ~]# ssh root@web4 'halt'

 

查看节点状态

[root@web1 ~]# clustat

Cluster Status for mycluster @ Mon Sep 22 21:55:26 2014

Member Status: Quorate   #表示集群可用状态

 

 Member Name                                     ID   Status

 ------ ----                                     ----------

 web1.rocker.com                                     1 Online,Local, rgmanager

 web2.rocker.com                                     2 Offline

 web3.rocker.com                                     3 Online, rgmanager

 web4.rocker.com                                     4 Offline

 

 Service Name                           Owner (Last)                           State        

 ------- ----                           ----- ------                           -----        

 service:myservice                      web3.rocker.com                        started

 

查看quorum

[root@web1 ~]# cman_tool status

……

Nodes: 2

Expected votes: 8

Total votes: 4

Node votes: 2

Quorum: 3 

……

#看,quorum在浮动,也就是说,只剩下一台也不会让整个集群挂掉。注意,前提是节点正常关机的情况下。

 

*****************************************************************

 

阶段二:这次要关机占用资源的节点

 

先恢复web2web4,开机然后开启服务即可

 

日志:

Sep 22 22:03:17 web1 kernel: dlm: got connection from 2

Sep 22 22:03:20 web1 kernel: dlm: got connection from 4

 

[root@web1 ~]# clustat

Cluster Status for mycluster @ Mon Sep 22 22:03:50 2014

Member Status: Quorate

 

 Member Name                                     ID   Status

 ------ ----                                     ----------

 web1.rocker.com                                     1 Online, Local, rgmanager

 web2.rocker.com                                     2 Online,rgmanager

 web3.rocker.com                                     3 Online,rgmanager

 web4.rocker.com                                     4 Online,rgmanager

 

 Service Name                           Owner (Last)                           State        

 ------- ----                           ----- ------                           -----        

 service:myservice                      web3.rocker.com                        started 

 

 [root@web1 ~]# cman_tool status

……

Nodes: 4

Expected votes: 8

Total votes: 8

Node votes: 2

Quorum: 5 

……

 

===Step1:现在把占用资源的web3关机,看看集群是怎么样运作的===

[root@web1 ~]# ssh root@web3 'halt'

[root@web1 ~]# tail /var/log/message

Sep 22 22:05:31 web1 clurgmgrd[4807]: <notice> Member 3 shuttingdown

Sep 22 22:06:04 web1 openais[4555]: [TOTEM] The token was lost in theOPERATIONAL state.

Sep 22 22:06:04 web1 openais[4555]: [TOTEM] Receive multicast socketrecv buffer size (320000 bytes).

Sep 22 22:06:04 web1 openais[4555]: [TOTEM] Transmit multicast socketsend buffer size (221184 bytes).

Sep 22 22:06:04 web1 openais[4555]: [TOTEM] entering GATHER state from2.

Sep 22 22:06:16 web1 openais[4555]: [TOTEM] entering GATHER state from11.

Sep 22 22:06:16 web1 openais[4555]: [TOTEM] Creating commit tokenbecause I am the rep.

Sep 22 22:06:16 web1 openais[4555]: [TOTEM] Storing new sequence id forring 24

Sep 22 22:06:16 web1 openais[4555]: [TOTEM] entering COMMIT state.

Sep 22 22:06:16 web1 openais[4555]: [TOTEM] entering RECOVERY state.

Sep 22 22:06:16 web1 openais[4555]: [TOTEM] position [0] member192.168.1.201:

Sep 22 22:06:16 web1 openais[4555]: [TOTEM] previous ring seq 32 rep192.168.1.201

Sep 22 22:06:16 web1 openais[4555]: [TOTEM] aru 8d high delivered 8dreceived flag 1

Sep 22 22:06:16 web1 openais[4555]: [TOTEM] position [1] member192.168.1.202:

Sep 22 22:06:16 web1 openais[4555]: [TOTEM] previous ring seq 32 rep192.168.1.201

Sep 22 22:06:16 web1 openais[4555]: [TOTEM] aru 8d high delivered 8dreceived flag 1

Sep 22 22:06:16 web1 openais[4555]: [TOTEM] position [2] member192.168.1.204:

Sep 22 22:06:16 web1 openais[4555]: [TOTEM] previous ring seq 32 rep192.168.1.201

Sep 22 22:06:16 web1 openais[4555]: [TOTEM] aru 8d high delivered 8dreceived flag 1

Sep 22 22:06:16 web1 kernel: dlm: closing connection to node 3

Sep 22 22:06:16 web1 openais[4555]: [TOTEM] Did not need to originateany messages in recovery.

Sep 22 22:06:16 web1 openais[4555]: [TOTEM] Sending initial ORF token

Sep 22 22:06:17 web1 openais[4555]: [CLM  ] CLM CONFIGURATION CHANGE

Sep 22 22:06:17 web1 openais[4555]: [CLM  ] New Configuration:

Sep 22 22:06:17 web1 openais[4555]: [CLM  ]       r(0)ip(192.168.1.201) 

Sep 22 22:06:17 web1 openais[4555]: [CLM  ]       r(0)ip(192.168.1.202) 

Sep 22 22:06:17 web1 openais[4555]: [CLM  ]       r(0)ip(192.168.1.204) 

Sep 22 22:06:17 web1 openais[4555]: [CLM  ] Members Left:

Sep 22 22:06:17 web1 openais[4555]: [CLM  ]       r(0)ip(192.168.1.203) 

Sep 22 22:06:17 web1 openais[4555]: [CLM  ] Members Joined:

Sep 22 22:06:17 web1 openais[4555]: [CLM  ] CLM CONFIGURATION CHANGE

Sep 22 22:06:17 web1 openais[4555]: [CLM  ] New Configuration:

Sep 22 22:06:17 web1 openais[4555]: [CLM  ]       r(0)ip(192.168.1.201) 

Sep 22 22:06:17 web1 openais[4555]: [CLM  ]       r(0)ip(192.168.1.202) 

Sep 22 22:06:17 web1 openais[4555]: [CLM  ]       r(0)ip(192.168.1.204) 

Sep 22 22:06:17 web1 openais[4555]: [CLM  ] Members Left:

Sep 22 22:06:17 web1 openais[4555]: [CLM  ] Members Joined:

Sep 22 22:06:17 web1 openais[4555]: [SYNC ] This node is within theprimary component and will provide service.

Sep 22 22:06:17 web1 openais[4555]: [TOTEM] entering OPERATIONAL state.

Sep 22 22:06:17 web1 openais[4555]: [CLM  ] got nodejoin message 192.168.1.201

Sep 22 22:06:17 web1 openais[4555]: [CLM  ] got nodejoin message 192.168.1.202

Sep 22 22:06:17 web1 openais[4555]: [CLM  ] got nodejoin message 192.168.1.204

Sep 22 22:06:17 web1 openais[4555]: [CPG  ] got joinlist message from node 4

Sep 22 22:06:18 web1 openais[4555]: [CPG  ] got joinlist message from node 1

Sep 22 22:06:18 web1 openais[4555]: [CPG  ] got joinlist message from node 2

 

[root@web1 ~]# clustat

Cluster Status for mycluster @ Mon Sep 22 22:06:37 2014

Member Status: Quorate #集群可用

 

 Member Name                                     ID   Status

 ------ ----                                     ----------

 web1.rocker.com                                     1 Online,Local, rgmanager

 web2.rocker.com                                     2 Online, rgmanager

 web3.rocker.com                                     3 Offline

 web4.rocker.com                                     4 Online,rgmanager

 

 Service Name                           Owner (Last)                           State         

 ------- ----                           ----- ------                           -----        

 service:myservice                      web2.rocker.com                        started 

 

#集群资源转移到了web2节点上了,测试一下。

wKioL1QjxfDirjVlAABKP7ZBFd0417.jpg

 

查看quorum

[root@web1 ~]# cman_tool status

……

Nodes: 3

Expected votes: 8

Total votes: 6

Node votes: 2

Quorum: 4 

……

#对比之前的quorum,这里的quorum也发生了浮动。

 

=====step2:把web2关机======

[root@web1 ~]# ssh root@web2 'halt'

[root@web1 ~]# tail /var/log/message

 

Sep 22 22:09:30 web1 clurgmgrd[4807]: <notice> Member 2 shutting down

Sep 22 22:09:30 web1 clurgmgrd[4807]: <notice> Starting stopped service service:myservice

Sep 22 22:09:33 web1 avahi-daemon[3919]: Registering new address record for 192.168.1.200 on eth0.    #资源转到web1节点了

Sep 22 22:09:34 web1clurgmgrd[4807]: <notice> Service service:myservice started

……

Sep 22 22:10:15 web1 openais[4555]: [CLM  ] got nodejoin message 192.168.1.201

Sep 22 22:10:15 web1 openais[4555]: [CLM  ] got nodejoin message 192.168.1.204

Sep 22 22:10:15 web1 openais[4555]: [CPG  ] got joinlist message from node 4

Sep 22 22:10:15 web1 openais[4555]: [CPG  ] got joinlist message from node 1

 

查看节点状态

[root@web1 ~]# clustat

Cluster Status for mycluster @ Mon Sep 22 22:11:25 2014

Member Status: Quorate

 

 Member Name                                     ID   Status

 ------ ----                                     ----------

 web1.rocker.com                                     1 Online,Local, rgmanager

 web2.rocker.com                                     2 Offline

 web3.rocker.com                                     3 Offline

 web4.rocker.com                                     4 Online,rgmanager

 

 Service Name                           Owner (Last)                           State        

 ------- ----                           ----- ------                           -----        

 service:myservice                      web1.rocker.com                        started    

测试

wKiom1Qjxczic8hdAABHne8t8Wk594.jpg

=====step3:把web1节点关机=====

[root@web4 ~]# ssh root@web1 'halt'

 

 

[root@web4 ~]# clustat

Cluster Status for mycluster @ Mon Sep 22 22:31:02 2014

Member Status: Quorate #集群依然可用

 

 Member Name                                     ID   Status

 ------ ----                                     ----------

 web1.rocker.com                                     1 Offline

 web2.rocker.com                                     2 Offline

 web3.rocker.com                                     3 Offline

 web4.rocker.com                                     4 Online,Local, rgmanager

 

 Service Name                           Owner (Last)                           State        

 ------- ----                           ----- ------                           -----        

 service:myservice                      web4.rocker.com                        started  

 

测试

wKioL1QjxfGDFTMMAABNVtIxG9o785.jpg

 

 ###字数限制####

###更多见下文###

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