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

[Sihan Goi]

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>
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>
> *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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>
>


-- 
- Goi Sihan
goister at gmail.com
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