[Linux-cluster] clusvcadm : Could not connect to resource group manager
PARAM KRISH
mkparam at gmail.com
Sat Aug 25 04:14:25 UTC 2012
Digimer,
I just want to confirm if i am missing any rpm's in my setup.
I referred this site
http://www.centos.org/docs/4/html/rh-cs-en-4/ap-rhcs-sw-inst-cust.html to
install the rpm's in red hat 5.6 but these packages *magma**, *dlm** are
missing in the CD, does it mean these are really important ? I installed
using 'yum group install' for "Cluster" and "ClusterStorage"
This is what the yum.log says from server1. Please confirm if there is
something missing.
-Param
On Fri, Aug 24, 2012 at 9:06 PM, PARAM KRISH <mkparam at gmail.com> wrote:
> Please find below the details.
>
> 1. cluster.conf : Please find attached herewith.
>
> 2. Is fencing in any form mandatory for a setup as simple as this ? I am
> just using two redhat5 VM's within VMware fusion in my Mac. What kind of
> fencing is applicable to this kind of setup, that can also benefit me ? All
> that i want to see from this PoC is to add some services like Apache, MySQL
> to see how quick and reliable the cluster to pick the service failures
> etc.,
>
> 3. Please find attached the messages from server1 and server2 when i did
> "service cman stop and start" on both nodes one after the other. In server1
> both stop and start went fine but clustat showed "Could not connect to
> CMAN: connection refused". If i do "cman_tool join" on both nodes one after
> the other, things look green
>
> Also, Am i missing any rpm's that are most important ? I used yum group
> install "Clustering" and "ClusterStorage" to install all the packages.
>
> -Param
>
> On Fri, Aug 24, 2012 at 7:28 PM, Digimer <lists at alteeve.ca> wrote:
>
>> A few things;
>>
>> 1. Please repost your cluster.conf file with line wraps in plain text.
>>
>> 2. Manual fencing is not supported in any way, please use real fencing,
>> like IPMI, iLO, etc.
>>
>> 3. Please stop the cluster entirely, start 'tail -f -n 0
>> /var/log/messages' on both nodes, then start cman, then start rgmanager.
>> Please share the output from the logs.
>>
>> Digimer
>>
>> On 08/24/2012 06:43 AM, PARAM KRISH wrote:
>> > Hi, Thanks for the help. I hope we are nearing to the problem.
>> >
>> > I enabled logging , this is how my cluster.conf looks like
>> >
>> > <?xml version="1.0"?>
>> > <cluster alias="newCluster" config_version="16" name="newCluster">
>> > <logging debug="on"/>
>> > <cman expected_votes="1" two_node="1"/>
>> > <clusternodes>
>> > <clusternode name="server1" nodeid="1" votes="1">
>> > <fence><method name="single"><device
>> > name="human"/></method></fence></clusternode><clusternode name="server2"
>> > nodeid="2" votes="1"><fence><method name="single"><device
>> >
>> name="human"/></method></fence></clusternode></clusternodes><fencedevices>
>> >
>> > </fencedevices><rm><failoverdomains><failoverdomain
>> > name="failOver" nofailback="0" ordered="1"
>> > restricted="0"><failoverdomainnode name="server1"
>> > priority="1"/><failoverdomainnode name="server2"
>> > priority="2"/></failoverdomain></failoverdomains><resources><ip
>> > address="192.168.61.130" monitor_link="1"/><apache
>> > config_file="conf/httpd.conf" name="httpd" server_root="/etc/httpd"
>> > shutdown_wait="0"/></resources><service autostart="1" domain="failOver"
>> > exclusive="1" name="Apache" recovery="relocate"><ip
>> > address="192.168.61.130" monitor_link="1"><apache
>> > config_file="conf/httpd.conf" name="Apache" server_root="/etc/httpd"
>> > shutdown_wait="0"/></ip></service><service autostart="1"
>> > domain="failOver" exclusive="1" name="website" recovery="relocate"><ip
>> > ref="192.168.61.130"><apache
>> > ref="httpd"/></ip></service></rm><fence_daemon clean_start="1"
>> > post_fail_delay="0" post_join_delay="3"/><logging debug="on"/></cluster>
>> >
>> > There is no logging happening in /var/run/cluster/
>> >
>> > [root at server1 ~]# ls /var/run/cluster/
>> > apache ccsd.pid ccsd.sock rgmanager.sk <http://rgmanager.sk>
>> >
>> > I started resource manager in foreground and it says like ..
>> >
>> > failed acquiring lockspace: No such device
>> > Locks not working!
>> >
>> > What next i could do ?
>> >
>> > -Param
>> >
>> > On Fri, Aug 24, 2012 at 3:18 PM, emmanuel segura <emi2fast at gmail.com
>> > <mailto:emi2fast at gmail.com>> wrote:
>> >
>> > /etc/init.d/rgmanager start or service rgmanager start
>> >
>> >
>> > 2012/8/24 Heiko Nardmann <heiko.nardmann at itechnical.de
>> > <mailto:heiko.nardmann at itechnical.de>>
>> >
>> > It is strange that strace shows that
>> > /var/run/cluster/rgmanager.sk <http://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 <http://rgmanager.sk> is missing ...
>> >
>> > Just some ideas ...
>> >
>> >
>> > Kind regards,
>> >
>> > Heiko
>> >
>> > Am 24.08.2012 11 <tel:24.08.2012%2011>: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/rgmanag__er.sk <http://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>
>> > <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
>> >
>> >
>> >
>> > --
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>> > https://www.redhat.com/__mailman/listinfo/linux-cluster
>> > <https://www.redhat.com/mailman/listinfo/linux-cluster>
>> >
>> >
>> >
>> >
>> > --
>> > esta es mi vida e me la vivo hasta que dios quiera
>> >
>> > --
>> > Linux-cluster mailing list
>> > Linux-cluster at redhat.com <mailto:Linux-cluster at redhat.com>
>> > https://www.redhat.com/mailman/listinfo/linux-cluster
>> >
>> >
>> >
>> >
>> > --
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>> >
>>
>>
>> --
>> Digimer
>> Papers and Projects: https://alteeve.ca
>>
>
>
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