[Pacemaker] ERROR: Unable to find nic or netmask.

Tue Sep 16 09:10:39 UTC 2014

On 16.09.2014 10:31, Sihan Goi wrote:
> Figured out the problem - the firewall rules are somehow not persistent.
> After running the following commands:
>
> iptables -I INPUT -m state --state NEW -p udp -m multiport --dports
> 5404,5405 -j ACCEPT
> iptables -I INPUT -p tcp -m state --state NEW -m tcp --dport 2224 -j ACCEPT
> iptables -I INPUT -p igmp -j ACCEPT
> iptables -I INPUT -m addrtype --dst-type MULTICAST -j ACCEPT
> service iptables save
>
> Both nodes are able to communicate with each other.
>
> Seems like several things aren't persistent upon reboots, and need to be
> restarted/reconfigured. Is this the intended behavior?

What do you mean with "several things" ? Firewall/iptables on CentOS 7? Or Pacemaker/Corosync/pcs ?

Nikita
>
> On Tue, Sep 2, 2014 at 2:05 PM, Nikita Michalko <michalko.system at a-i-p.com>
> wrote:
>
>>   Hi,
>>
>> maybe is following helpfull:
>> https://www.google.at/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0CDEQFjAB&url=http%3A%2F%2Fhttpd.apache.org%2Fdocs%2Ftrunk%2Fbind.html&ei=QV0FVK2YBYHO0QXPxYHQDw&usg=AFQjCNGCErofEEVtclS_x6ZXA3bXvJiaww&sig2=hR8kUWRcpmN4PE1V42t9kg&bvm=bv.74115972,d.bGE
>> https://www.google.at/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CC0QrAIwAA&url=http%3A%2F%2Fubuntuforums.org%2Fshowthread.php%3Ft%3D1636667&ei=QV0FVK2YBYHO0QXPxYHQDw&usg=AFQjCNHcs7alJ_RwBc4tWq2X7ew4ynEmzg&sig2=ra1qjZ8nly8opwawrACidw&bvm=bv.74115972,d.bGE
>>
>>
>> HTH
>>
>> Nikita
>>
>>
>>
>> On 02.09.2014 07:47, Sihan Goi wrote:
>>
>> Hi,
>>
>> After some investigation, it seems that my Apache is having trouble
>> starting in both nodes. I get the following error message when I try to
>> restart the service:
>>
>> Job for httpd.service failed. See 'systemctl status httpd.service' and
>> 'journalctl -xn' for details.
>>
>> "systemctl status httpd.service" shows the following output:
>>
>> httpd.service - The Apache HTTP Server
>>     Loaded: loaded (/usr/lib/systemd/system/httpd.service; enabled)
>>     Active: failed (Result: exit-code) since Tue 2014-09-02 13:45:52 SGT; 8s
>> ago
>>    Process: 26095 ExecStop=/bin/kill -WINCH ${MAINPID} (code=exited,
>> status=0/SUCCESS)
>>    Process: 26093 ExecStart=/usr/sbin/httpd $OPTIONS -DFOREGROUND
>> (code=exited, status=1/FAILURE)
>>   Main PID: 26093 (code=exited, status=1/FAILURE)
>>
>> Sep 02 13:45:52 node02 httpd[26093]: AH00558: httpd: Could not reliably
>> det...ge
>> Sep 02 13:45:52 node02 httpd[26093]: (98)Address already in use: AH00072:
>> m...80
>> Sep 02 13:45:52 node02 httpd[26093]: no listening sockets available,
>> shutti...wn
>> Sep 02 13:45:52 node02 httpd[26093]: AH00015: Unable to open logs
>> Sep 02 13:45:52 node02 systemd[1]: httpd.service: main process exited,
>> code...RE
>> Sep 02 13:45:52 node02 systemd[1]: Failed to start The Apache HTTP Server.
>> Sep 02 13:45:52 node02 systemd[1]: Unit httpd.service entered failed state.
>> Hint: Some lines were ellipsized, use -l to show in full.
>>
>> /var/log/messages also shows similar messages
>>
>> Sep  2 13:41:12 node02 systemd: Starting The Apache HTTP Server...
>> Sep  2 13:41:12 node02 httpd: AH00558: httpd: Could not reliably determine
>> the server's fully qualified domain name, using 192.168.0.112. Set the
>> 'ServerName' directive globally to suppress this message
>> Sep  2 13:41:12 node02 httpd: (98)Address already in use: AH00072:
>> make_sock: could not bind to address 127.0.0.1:80
>> Sep  2 13:41:12 node02 httpd: no listening sockets available, shutting down
>> Sep  2 13:41:12 node02 httpd: AH00015: Unable to open logs
>> Sep  2 13:41:12 node02 systemd: httpd.service: main process exited,
>> code=exited, status=1/FAILURE
>> Sep  2 13:41:12 node02 systemd: Failed to start The Apache HTTP Server.
>> Sep  2 13:41:12 node02 systemd: Unit httpd.service entered failed state.
>>
>> Is this related to the problem?
>>
>>
>>
>> On Tue, Sep 2, 2014 at 12:42 PM, Teerapatr Kittiratanachai <maillist.tk at gmail.com> wrote:
>>
>>
>>   Try to set cidr_netmask=32 for resource only, and let the physical
>> interface's netmask be 24.
>>
>> On Tue, Sep 2, 2014 at 11:27 AM, Sihan Goi <goister at gmail.com> <goister at gmail.com> wrote:
>>
>>   Got it. Changed the netmask for both PCs to 255.255.255.0 and changed
>> cidr_netmask to 24 and it works...sort of.
>>
>> It was working for a while, and then I rebooted both PCs, and now each
>> thinks its online and the other is offline.
>>
>> "pcs status" on my node01 gives the following output:
>> Cluster name: cluster_web
>> Last updated: Tue Sep  2 12:21:25 2014
>> Last change: Tue Sep  2 12:13:27 2014 via cibadmin on node02
>> Stack: corosync
>> Current DC: node01 (1) - partition WITHOUT quorum
>> Version: 1.1.10-32.el7_0-368c726
>> 2 Nodes configured
>> 2 Resources configured
>>
>>
>> Online: [ node01 ]
>> OFFLINE: [ node02 ]
>>
>> Full list of resources:
>>
>>   virtual_ip    (ocf::heartbeat:IPaddr2):    Started node01
>>   webserver    (ocf::heartbeat:apache):    Started node01
>>
>> PCSD Status:
>>    node01: Offline
>>    node02: Online
>>
>> Daemon Status:
>>    corosync: active/disabled
>>    pacemaker: active/disabled
>>    pcsd: active/disabled
>>
>> However, "pcs status" on node02 shows the following output:
>> Cluster name: cluster_web
>> Last updated: Tue Sep  2 12:20:41 2014
>> Last change: Tue Sep  2 11:59:03 2014 via cibadmin on node02
>> Stack: corosync
>> Current DC: node02 (2) - partition WITHOUT quorum
>> Version: 1.1.10-32.el7_0-368c726
>> 2 Nodes configured
>> 2 Resources configured
>>
>>
>> Online: [ node02 ]
>> OFFLINE: [ node01 ]
>>
>> Full list of resources:
>>
>>   virtual_ip    (ocf::heartbeat:IPaddr2):    Started node02
>>   webserver    (ocf::heartbeat:apache):    Started node02
>>
>> PCSD Status:
>>    node01: Offline
>>    node02: Online
>>
>> Daemon Status:
>>    corosync: active/disabled
>>    pacemaker: active/disabled
>>    pcsd: active/disabled
>>
>> Seems like each node thinks it's online and the other is not. I'm
>>
>>   running HA
>>
>>   on apache webserver, and if I access the webpage on node01, I get
>>
>>   node01's
>>
>>   index.html. If I access it on node02, I get node02's index.html. If I
>>
>>   access
>>
>>   it via another PC connected to the same AP, the webpage is unavailable.
>>
>> What could be wrong?
>>
>>
>> On Mon, Sep 1, 2014 at 9:09 PM, John Lauro <john.lauro at covenanteyes.com> <john.lauro at covenanteyes.com>
>> wrote:
>>
>>   ip=192.168.0.110 cidr_netmask=32
>> /32 leaves no room for any other IP addresses on that interface and so
>>
>>   you
>>
>>   have to specify the nic.  Are you certain 192.168.0.111 and
>>
>>   192.168.0.112 do
>>
>>   not have a different netmask from 255.255.255.255, like 255.255.255.0
>>
>>   for
>>
>>   /24 or 255.255.0.0 for /16?  If they do have 255.255.255.255 too, then
>>
>>   they
>>
>>   are probably not setup correctly...
>>
>> PS: cidr_netmask is optional.  Assuming a proper netmask (not
>> 255.255.255.2555) is on 192.168.0.111 and 192.168.0.112 it should work
>> without specifying cidr_netmask.
>>
>>
>> ________________________________
>>
>> From: "Sihan Goi" <goister at gmail.com> <goister at gmail.com>
>> To: pacemaker at oss.clusterlabs.org
>> Sent: Monday, September 1, 2014 4:17:20 AM
>> Subject: [Pacemaker] ERROR: Unable to find nic or netmask.
>>
>>
>> Hi,
>>
>> I'm trying to create a HA cluster with 2 CentOS 7 PCs connected to a
>> wireless AP. The PCs have the static IP addresses 192.168.0.111 and
>> 192.168.0.112 respectively and hostnames node01 and node02 respectively.
>>
>> I've tried to create a virtual IP address of 192.168.0.110 using the
>> following command:
>>
>> pcs resource create virtual_ip ocf:heartbeat:IPaddr2 ip=192.168.0.110
>> cidr_netmask=32 op monitor interval=30s
>>
>> However, when I do a "pcs status resources" I get the following output:
>>
>>   virtual_ip    (ocf::heartbeat:IPaddr2):    Stopped
>>
>> The virtual IP is stopped rather than started. I looked into
>> /var/log/messages and /var/log/pacemaker.log
>>   and I find the following error messages:
>>
>> node02 IPaddr2(virtual_ip)[25451]: ERROR: Unable to find nic or netmask.
>> node02 IPaddr2(virtual_ip)[25451]: ERROR: [findif] failed
>>
>> It seems that it's unable to find my nic. How can I fix this?
>>
>> Thanks.
>>
>> _______________________________________________
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>>
>> Project Home: http://www.clusterlabs.org
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>>
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>>
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>>
>>
>>
>> --
>> - Goi Sihangoister at gmail.com
>>
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>>
>> Project Home: http://www.clusterlabs.org
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>> Bugs: http://bugs.clusterlabs.org
>>
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>>
>> Project Home: http://www.clusterlabs.org
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>> Bugs: http://bugs.clusterlabs.org
>>
>>
>>
>>
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>>
>> Project Home: http://www.clusterlabs.org
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>> Bugs: http://bugs.clusterlabs.org
>>
>>
>>
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>> http://oss.clusterlabs.org/mailman/listinfo/pacemaker
>>
>> Project Home: http://www.clusterlabs.org
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>> Bugs: http://bugs.clusterlabs.org
>>
>>
>
>
>
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