<div dir="ltr"><div><div>Figured out the problem - the firewall rules are somehow not persistent. After running the following commands:<br><br>iptables -I INPUT -m state --state NEW -p udp -m multiport --dports 5404,5405 -j ACCEPT<br>iptables -I INPUT -p tcp -m state --state NEW -m tcp --dport 2224 -j ACCEPT<br>iptables -I INPUT -p igmp -j ACCEPT<br>iptables -I INPUT -m addrtype --dst-type MULTICAST -j ACCEPT<br>service iptables save<br><br></div>Both nodes are able to communicate with each other.<br><br></div>Seems like several things aren't persistent upon reboots, and need to be restarted/reconfigured. Is this the intended behavior?<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Sep 2, 2014 at 2:05 PM, Nikita Michalko <span dir="ltr"><<a href="mailto:michalko.system@a-i-p.com" target="_blank">michalko.system@a-i-p.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>
<pre>Hi,
maybe is following helpfull:
<a href="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" target="_blank">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</a>
<a href="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" target="_blank">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</a>
HTH
Nikita
</pre><div><div class="h5">
<br>
On 02.09.2014 07:47, Sihan Goi wrote:<br>
</div></div></div><div><div class="h5">
<blockquote type="cite">
<pre>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 <a href="http://127.0.0.1:80" target="_blank">127.0.0.1:80</a>
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 <
<a href="mailto:maillist.tk@gmail.com" target="_blank">maillist.tk@gmail.com</a>> wrote:
</pre>
<blockquote type="cite">
<pre>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 <a href="mailto:goister@gmail.com" target="_blank"><goister@gmail.com></a> wrote:
</pre>
<blockquote type="cite">
<pre>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
</pre>
</blockquote>
<pre>running HA
</pre>
<blockquote type="cite">
<pre>on apache webserver, and if I access the webpage on node01, I get
</pre>
</blockquote>
<pre>node01's
</pre>
<blockquote type="cite">
<pre>index.html. If I access it on node02, I get node02's index.html. If I
</pre>
</blockquote>
<pre>access
</pre>
<blockquote type="cite">
<pre>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 <a href="mailto:john.lauro@covenanteyes.com" target="_blank"><john.lauro@covenanteyes.com></a>
wrote:
</pre>
<blockquote type="cite">
<pre>ip=192.168.0.110 cidr_netmask=32
/32 leaves no room for any other IP addresses on that interface and so
</pre>
</blockquote>
</blockquote>
<pre>you
</pre>
<blockquote type="cite">
<blockquote type="cite">
<pre>have to specify the nic. Are you certain 192.168.0.111 and
</pre>
</blockquote>
</blockquote>
<pre>192.168.0.112 do
</pre>
<blockquote type="cite">
<blockquote type="cite">
<pre>not have a different netmask from 255.255.255.255, like 255.255.255.0
</pre>
</blockquote>
</blockquote>
<pre>for
</pre>
<blockquote type="cite">
<blockquote type="cite">
<pre>/24 or 255.255.0.0 for /16? If they do have 255.255.255.255 too, then
</pre>
</blockquote>
</blockquote>
<pre>they
</pre>
<blockquote type="cite">
<blockquote type="cite">
<pre>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" <a href="mailto:goister@gmail.com" target="_blank"><goister@gmail.com></a>
To: <a href="mailto:pacemaker@oss.clusterlabs.org" target="_blank">pacemaker@oss.clusterlabs.org</a>
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.
_______________________________________________
Pacemaker mailing list: <a href="mailto:Pacemaker@oss.clusterlabs.org" target="_blank">Pacemaker@oss.clusterlabs.org</a>
<a href="http://oss.clusterlabs.org/mailman/listinfo/pacemaker" target="_blank">http://oss.clusterlabs.org/mailman/listinfo/pacemaker</a>
Project Home: <a href="http://www.clusterlabs.org" target="_blank">http://www.clusterlabs.org</a>
Getting started:
</pre>
</blockquote>
</blockquote>
<pre><a href="http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf" target="_blank">http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf</a>
</pre>
<blockquote type="cite">
<blockquote type="cite">
<pre>Bugs: <a href="http://bugs.clusterlabs.org" target="_blank">http://bugs.clusterlabs.org</a>
</pre>
</blockquote>
<pre>
--
- Goi Sihan
<a href="mailto:goister@gmail.com" target="_blank">goister@gmail.com</a>
_______________________________________________
Pacemaker mailing list: <a href="mailto:Pacemaker@oss.clusterlabs.org" target="_blank">Pacemaker@oss.clusterlabs.org</a>
<a href="http://oss.clusterlabs.org/mailman/listinfo/pacemaker" target="_blank">http://oss.clusterlabs.org/mailman/listinfo/pacemaker</a>
Project Home: <a href="http://www.clusterlabs.org" target="_blank">http://www.clusterlabs.org</a>
Getting started: <a href="http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf" target="_blank">http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf</a>
Bugs: <a href="http://bugs.clusterlabs.org" target="_blank">http://bugs.clusterlabs.org</a>
</pre>
</blockquote>
<pre>_______________________________________________
Pacemaker mailing list: <a href="mailto:Pacemaker@oss.clusterlabs.org" target="_blank">Pacemaker@oss.clusterlabs.org</a>
<a href="http://oss.clusterlabs.org/mailman/listinfo/pacemaker" target="_blank">http://oss.clusterlabs.org/mailman/listinfo/pacemaker</a>
Project Home: <a href="http://www.clusterlabs.org" target="_blank">http://www.clusterlabs.org</a>
Getting started: <a href="http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf" target="_blank">http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf</a>
Bugs: <a href="http://bugs.clusterlabs.org" target="_blank">http://bugs.clusterlabs.org</a>
</pre>
</blockquote>
<pre>
</pre>
<br>
<fieldset></fieldset>
<br>
<pre>_______________________________________________
Pacemaker mailing list: <a href="mailto:Pacemaker@oss.clusterlabs.org" target="_blank">Pacemaker@oss.clusterlabs.org</a>
<a href="http://oss.clusterlabs.org/mailman/listinfo/pacemaker" target="_blank">http://oss.clusterlabs.org/mailman/listinfo/pacemaker</a>
Project Home: <a href="http://www.clusterlabs.org" target="_blank">http://www.clusterlabs.org</a>
Getting started: <a href="http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf" target="_blank">http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf</a>
Bugs: <a href="http://bugs.clusterlabs.org" target="_blank">http://bugs.clusterlabs.org</a>
</pre>
</blockquote>
<br>
</div></div></div>
<br>_______________________________________________<br>
Pacemaker mailing list: <a href="mailto:Pacemaker@oss.clusterlabs.org">Pacemaker@oss.clusterlabs.org</a><br>
<a href="http://oss.clusterlabs.org/mailman/listinfo/pacemaker" target="_blank">http://oss.clusterlabs.org/mailman/listinfo/pacemaker</a><br>
<br>
Project Home: <a href="http://www.clusterlabs.org" target="_blank">http://www.clusterlabs.org</a><br>
Getting started: <a href="http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf" target="_blank">http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf</a><br>
Bugs: <a href="http://bugs.clusterlabs.org" target="_blank">http://bugs.clusterlabs.org</a><br>
<br></blockquote></div><br><br clear="all"><br>-- <br>- Goi Sihan<br><a href="mailto:goister@gmail.com">goister@gmail.com</a>
</div>