[Linux-HA] Two nodes can't see each other, how can I diagnose?

[Bin Chen(sunwen_ling)]

On Tue, Dec 14, 2010 at 3:19 PM, Pavlos Parissis
<pavlos.parissis at gmail.com>wrote:

> On 14 December 2010 08:03, Bin Chen(sunwen_ling) <binary.chen at gmail.com>
> wrote:
> > Hi,
> >
> > I have two nodes setup, it works well before, each one can see the other
> > one. But today somehow the nodes can't discover the other one, the "crm
> > status" in one node always shows the other node is offline, but I can
> ping
> > each other successfully.
> > Is this mcast issue? How can I use tool to diagonose the root cause?
> >
> > Thanks.
> > Bin
> >
> > PS: Attached the log:
> >
> > [root at xcp-1 bin]# crm status
> > ============
> > Last updated: Mon Dec 13 19:00:17 2010
> > Stack: Heartbeat
> > Current DC: xcp-1 (51fbafc2-2ca9-4123-b1e0-43927f6eccb6) - partition with
> > quorum
> > Version: 1.0.10-da7075976b5ff0bee71074385f8fd02f296ec8a3
> > 2 Nodes configured, unknown expected votes
> > 2 Resources configured.
> > ============
> >
> > Online: [ xcp-1 ]
> > OFFLINE: [ xcp-3 ]
> >
> >  jabberd_ip1    (ocf::heartbeat:myip):  Started xcp-1
> >  jabberd1       (ocf::heartbeat:jabberd):       Started xcp-1
> >
> > Failed actions:
> >    jabberd1_monitor_0 (node=xcp-1, call=3, rc=1, status=complete):
> unknown
> > error
> > [root at xcp-1 bin]# ping xcp-3
> > PING xcp-3 (172.17.2.17) 56(84) bytes of data.
> > 64 bytes from xcp-3 (172.17.2.17): icmp_seq=1 ttl=64 time=0.131 ms
> > 64 bytes from xcp-3 (172.17.2.17): icmp_seq=2 ttl=64 time=0.151 ms
> >
>
> if you run on xcp-1  "cl_status hblinkstatus xcp-3 eth0", what do you get?
>

Thanks for your reply, nevermind, I think it's my router/switch issue, now
all the things are good now.

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