From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ming Lin <minggr@gmail.com>
Subject: Re: monitor port closed
Date: Mon, 23 Jan 2017 11:08:06 -0800
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To: Willem Jan Withagen <wjw@digiware.nl>
Cc: kefu chai <tchaikov@gmail.com>, "ceph-devel@vger.kernel.org" <ceph-devel@vger.kernel.org>

On Mon, Jan 23, 2017 at 6:28 AM, Willem Jan Withagen <wjw@digiware.nl> wrote:

>
> Other nice tools to help you here to see where the socket has gone:
>         sockstat
>         lsof
>
> They can tell you if the socket is somewhere else opened.
> And what the state is.
>
> Or they can tell you what other port(s) the monitor has opened.

# netstat -putnl |grep 7000
<no output>

# netstat -putna |grep 7000
tcp        0      0 192.168.0.1:7000        192.168.122.131:53240
ESTABLISHED 21980/ceph-mon

Seems port 7000 is not listening, but still established with rbd client.

root@rbd-client:~# netstat -putna |grep 53240
tcp        0      0 192.168.122.131:53240   192.168.0.1:7000
ESTABLISHED -