[Linux-cluster] clusvcadm : Could not connect to resource group manager

[Heiko Nardmann]

It is strange that strace shows that /var/run/cluster/rgmanager.sk is 
missing.

Normally it is helpful to see the complete cluster.conf. Could you 
provide that one?

Also of interest is /var/log/cluster/rgmanager.log - do you have debug 
enabled inside cluster.conf?

Maybe it is possible to start rgmanager in the foreground (-f) with 
strace? That might also be a way to show why the rgmanager.sk is missing ...

Just some ideas ...


Kind regards,

     Heiko

Am 24.08.2012 11:04, schrieb PARAM KRISH:
> All,
>
> I am trying to setup a simple two node cluster in my laptop using two 
> RHEL VM's.
>
> Everything looks just fine to me but i am unable to enable a apache 
> service though it works beautifully when tried with "rg_test test" on 
> both the nodes.
>
> What could be the problem ? Please help. I am a novice in red hat 
> cluster but learnt a bit of it in the last few days while trying to 
> fix all the problems encountered.
>
> Here are the details.
>
> [root at server1 ~]# clustat
> Cluster Status for newCluster @ Thu Aug 23 00:29:32 2012
> Member Status: Quorate
>
>  Member Name                 ID   Status
>  ------ ----                 ---- ------
>  server1                     1 Online, Local
>  server2                     2 Online
>
> [root at server1 ~]# clustat -x
> <?xml version="1.0"?>
> <clustat version="4.1.1">
>   <cluster name="newCluster" id="43188" generation="250536"/>
>   <quorum quorate="1" groupmember="0"/>
>   <nodes>
>     <node name="server1" state="1" local="1" estranged="0" 
> rgmanager="0" rgmanager_master="0" qdisk="0" nodeid="0x00000001"/>
>     <node name="server2" state="1" local="0" estranged="0" 
> rgmanager="0" rgmanager_master="0" qdisk="0" nodeid="0x00000002"/> 
>  </nodes>
> </clustat>
>
> [root at server2 ~]# clustat
> Cluster Status for newCluster @ Thu Aug 23 03:13:34 2012
> Member Status: Quorate
>
>  Member Name                 ID   Status
>  ------ ----                 ---- ------
>  server1                     1 Online
>  server2                     2 Online, Local
>
> [root at server2 ~]# clustat -x
> <?xml version="1.0"?>
> <clustat version="4.1.1">
>   <cluster name="newCluster" id="43188" generation="250536"/>
>   <quorum quorate="1" groupmember="0"/>
>   <nodes>
>     <node name="server1" state="1" local="0" estranged="0" 
> rgmanager="0" rgmanager_master="0" qdisk="0" nodeid="0x00000001"/>
>     <node name="server2" state="1" local="1" estranged="0" 
> rgmanager="0" rgmanager_master="0" qdisk="0" nodeid="0x00000002"/>
>   </nodes>
> </clustat>
>
>
> [root at server2 ~]# clusvcadm -e Apache
> Local machine trying to enable service:Apache...Could not connect to 
> resource group manager
>
> strace cluvcsadm -e Apache
> ...
> stat64(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 4), ...}) = 0
> mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 
> 0) = 0xb7fb5000
> write(1, "Local machine trying to enable s"..., 48Local machine trying 
> to enable service:Apache...) = 48
> socket(PF_FILE, SOCK_STREAM, 0)         = 5
> connect(5, {sa_family=AF_FILE, path="/var/run/cluster/rgmanager.sk 
> <http://rgmanager.sk>"...}, 110) = -1 ENOENT (No such file or directory)
> close(5)                                = 0
> write(1, "Could not connect to resource gr"..., 44Could not connect to 
> resource group manager
> ) = 44
> exit_group(1)                           = ?
>
>
> [root at server1 ~]# hostname
> server1.localdomain
>
> [root at server1 ~]# cat /etc/hosts
> # Do not remove the following line, or various programs
> # that require network functionality will fail.
> #127.0.0.1              server1.localdomain server1 
> localhost.localdomain localhost
> 192.168.61.132 server1.localdomain server1
> 192.168.61.133 server2.localdomain server2
> ::1             localhost6.localdomain6 localhost6
>
>
> Package versions :
> luci-0.12.2-24.el5
> ricci-0.12.2-24.el5
> rgmanager-2.0.52-9.el5
> modcluster-0.12.1-2.el5
> cluster-cim-0.12.1-2.el5
> system-config-cluster-1.0.57-7
> lvm2-cluster-2.02.74-3.el5
> cluster-snmp-0.12.1-2.el5
>
> [root at server1 log]# cman_tool status
> Version: 6.2.0
> Config Version: 15
> Cluster Name: newCluster
> Cluster Id: 43188
> Cluster Member: Yes
> Cluster Generation: 250536
> Membership state: Cluster-Member
> Nodes: 2
> Expected votes: 1
> Total votes: 2
> Quorum: 1
> Active subsystems: 2
> Flags: 2node
> Ports Bound: 0
> Node name: server1
> Node ID: 1
> Multicast addresses: 239.192.168.93
> Node addresses: 192.168.61.132
>
> Redhat :Red Hat Enterprise Linux Server release 5.6 
> (Tikanga)2.6.18-238.el5xen
>
> [root at server1 log]# service rgmanager status
> clurgmgrd (pid  9775) is running...
>
> [root at server1 log]# netstat -na | grep 11111
> tcp        0      0 0.0.0.0:11111 <http://0.0.0.0:11111>         
> 0.0.0.0:*                   LISTEN
>
> Please let me know if you can help. One thing i noticed was that in 
> the "clustat" it does not show "rgmanager" against both the nodes but 
> i see the service is just running fine.
>
> *Note : No iptables, no SELinux enabled.*
> *
> *
> Hope i have given all the details required to help me quickly. Thanks.
>
> -Param
>
>