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Re: hostnames

From: Lawrence, Wayne
Subject: Re: hostnames
Date: Tue, 14 Feb 2012 10:21:29 +0000

Hi Martin,
To answer your questions in order.
1) All hosts are tunning monit 5.3.2 the host which resolves correctly is running centos 6.2.
  the hosts that dont resolve correctly are running ubuntu 11.10 and Arch linux.
2) the hostname outputs are as follows
On the ubuntu host
on the Arch host

3) outputs from getent hosts `hostname`
on the ubuntu host       localhost.localdomain loclhost talyn
on the Arch host       localhost.localdomain localhost scorpius

I may be ,missing something blatantly obvious but if you have any suggestions to put this right i would appreciate it.
On 14 February 2012 09:14, Martin Pala <address@hidden> wrote:

monit <= 5.2.4 used just  the libc's interface gethostname(), which should match the output of the "hostname" CLI utility.

monit >= 5.2.5 gets the hostname also via gethostname(), but then also tries to resolve that name to get the fully qualified domain name using system's getaddrinfo() API (the resolver is driven by nsswitch.conf and resolv.conf).

Few questions?
1.) which monit versions are running the two hosts which report as "localhost.localdomain" and which monit versions those who report correct hostname?
2.) what is the "hostname" output on host with "localhost.localdomain"?
3.) what is the "getent hosts `hostname`" output on host with "localhost.localdomain"?


On Feb 9, 2012, at 11:10 AM, Lawrence, Wayne wrote:

> Hi,
> Just a quick question if anyone can answer it. Where does monit get the hostname from?
> I have serveral servers which all report their correct hostanme at the cli but when i get emails from monit or view them in m/monit they show as localhost.localdomain. One reports everything coreclty the other 2 are giving the localhost/localdomain problem.
> I know the server names are correct as they all resolve correctly but I want consistency across my servers.
> Rergards
> Wayne
> --
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