Monit 5.3.2 not working on Ubuntu 12.04 x86_64

[Kyoku]

I have monit working on several servers but when I install it on Ubuntu 12.04 64-bit server I get the following error reported in the log file and monitoring doesn't work.

[EDT Jun 24 21:26:20] error : State file '/var/lib/monit/state': Unable to read magic

I installed monit with apt-get install monit and the version is 5.3.2

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Sergey B Kirpichev (skirpichev)]

Please, read first this:
http://www.chiark.greenend.org.uk/~sgtatham/bugs.html

$ sudo apt-cache policy monit
monit:
  Installed: (none)
  Candidate: 1:5.3.2-1
  Version table:
     1:5.3.2-1 0
        500 http://ru.archive.ubuntu.com/ubuntu/ precise/universe amd64 Packages
$ sudo apt-get install monit
Reading package lists... Done
Building dependency tree
Reading state information... Done
Suggested packages:
  exim4 postfix mail-transport-agent
The following NEW packages will be installed:
  monit
0 upgraded, 1 newly installed, 0 to remove and 64 not upgraded.
Need to get 276 kB of archives.
After this operation, 732 kB of additional disk space will be used.
Get:1 http://ru.archive.ubuntu.com/ubuntu/ precise/universe monit amd64 1:5.3.2-1 [276 kB]
Fetched 276 kB in 0s (1,319 kB/s)
Selecting previously unselected package monit.
(Reading database ... 48857 files and directories currently installed.)
Unpacking monit (from .../monit_1%3a5.3.2-1_amd64.deb) ...
Processing triggers for ureadahead ...
ureadahead will be reprofiled on next reboot
Processing triggers for man-db ...
Setting up monit (1:5.3.2-1) ...
 * Starting daemon monitor monit
   ...done.
$ pidof monit
1547
$ ls -ld /var/lib/monit
drwxr-xr-x 3 root root 4096 Dec 9 20:15 /var/lib/monit
$ ls -ld /var/lib/monit/state
-rw------- 1 root root 296 Dec 9 20:15 /var/lib/monit/state
$ sudo invoke-rc.d monit restart
 * Stopping daemon monitor monit
   ...done.
 * Starting daemon monitor monit
   ...done.
$ pidof monit
1593
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.04.1 LTS
Release: 12.04
Codename: precise
$ tail /var/log/monit.log
[MSK Dec 9 20:15:52] info : monit: generated unique Monit id 5e4c7ec58230765258661fbb85ade1a5 and stored to '/var/lib/monit/id'
[MSK Dec 9 20:15:52] info : Starting monit daemon
[MSK Dec 9 20:15:52] error : State file '/var/lib/monit/state': Unable to read magic
[MSK Dec 9 20:15:52] info : 'system_ubuntu' Monit started
[MSK Dec 9 20:16:26] info : monit daemon with pid [1547] killed
[MSK Dec 9 20:16:26] info : 'system_ubuntu' Monit stopped
[MSK Dec 9 20:16:26] info : Starting monit daemon
[MSK Dec 9 20:16:26] info : 'system_ubuntu' Monit started

[rintcius (j-kubuntu)]

But this line in the log is confusing:

[MSK Dec 9 20:15:52] error : State file '/var/lib/monit/state': Unable to read magic

It *may* be that monit is working ok, but it also may be crucial that monit is able to read that "magic".
Can this message be safely ignored?

[Sergey B Kirpichev (skirpichev)]

> But this line in the log is confusing:
> [MSK Dec 9 20:15:52] error : State file '/var/lib/monit/state': Unable
> to read magic

Confusing != monitoring doesn't work.

> Can this message be safely ignored?

In your case, probably "yes". See example:
https://bugs.launchpad.net/ubuntu/+source/monit/+bug/1017327/comments/2

I think it's ok to see this message once, at first startup.

[Thom Luxford (c-thom)]

I can confirm this as a problem on this new server I'm working on, brand new installation of monit, using:
aptitude update;aptitude install monit

While trying to connect to view monit status or summary one gets:

monit: error connecting to the monit droot@lcfp:/var/log# ps aux|grep monit
root 3226 0.0 0.0 30384 1144 ? S 14:54 0:00 /usr/bin/monit -c /etc/monit/monitrc
root 3545 0.0 0.0 9380 916 pts/0 S+ 15:15 0:00 grep --color=auto monit
root@lcfp:/var/log#
aemon
root@lcfp:/var/log# monit status
monit: error connecting to the monit daemon
root@lcfp:/var/log#

root@lcfp:/var/log# uname -a
Linux lcfp 3.5.0-23-generic #35~precise1-Ubuntu SMP Fri Jan 25 17:13:26 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

root@lcfp:/var/log# dpkg -l|grep -i 'monit '
ii monit 1:5.3.2-1 utility for monitoring and managing daemons or similar programs

root@lcfp:/var/log# dmidecode -t system|grep Product
 Product Name: Lenovo ThinkServer RD530
root@lcfp:/var/log# dmidecode -t processor|grep Intel
 Manufacturer: Intel
 Version: Intel(R) Xeon(R) CPU E5-2640 0 @ 2.50GHz

root@lcfp:/var/log# cat /var/log/monit.log
[PDT Apr 19 14:54:15] info : monit: generated unique Monit id c7be657b41345a17935b7b415df47588 and stored to '/var/lib/monit/id'
[PDT Apr 19 14:54:15] info : Starting monit daemon
[PDT Apr 19 14:54:15] error : State file '/var/lib/monit/state': Unable to read magic
[PDT Apr 19 14:54:15] info : 'system_lcfp.shmi.ath.cx' Monit started
[PDT Apr 19 14:54:21] error : monit: error connecting to the monit daemon
[PDT Apr 19 14:55:36] error : monit: error connecting to the monit daemon
[PDT Apr 19 14:57:39] error : monit: error connecting to the monit daemon
[PDT Apr 19 14:58:44] info : [PDT Apr 19 14:58:44] info : monit daemon at 3226 awakened
Awakened by User defined signal 1
[PDT Apr 19 15:08:30] error : monit: error connecting to the monit daemon
[PDT Apr 19 15:08:38] error : monit: error connecting to the monit daemon

Have tried reinstalling monit, ie aptitude purge

[Sergey B Kirpichev (skirpichev)]

> Have tried reinstalling monit

Please, try to read monit documentaion and configure monit accordingly:
http://mmonit.com/monit/documentation/monit.html

In the default setup - monit's httpd interface is not enabled. That's why monit status doesn't work.

[Thom Luxford (c-thom)]

I've determined that even with the HTTPD interface enabled it is not
available immediately and one must wait a few minutes on 12.04 Ubuntu
installs.

This was confusing because:
On version 10.04 Ubuntu installations of monit, the HTTPD interface comes
online immediately and does not wait for:
with start delay <num>
On version 12.04 Ubuntu installations of monit, the HTTPD interface waits
for
with start delay <num>

On Sat, Feb 8, 2014 at 8:10 AM, Sergey B Kirpichev <
<email address hidden>> wrote:

> > Have tried reinstalling monit
>
> Please, try to read monit documentaion and configure monit accordingly:
> http://mmonit.com/monit/documentation/monit.html
>
> In the default setup - monit's httpd interface is not enabled. That's
> why monit status doesn't work.
>
>
> ** Changed in: monit (Ubuntu)
> Status: Confirmed => Invalid
>
> ** Changed in: monit (Ubuntu)
> Assignee: (unassigned) => Sergey B Kirpichev (skirpichev)
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1017327
>
> Title:
> Monit 5.3.2 not working on Ubuntu 12.04 x86_64
>
> Status in "monit" package in Ubuntu:
> Invalid
>
> Bug description:
> I have monit working on several servers but when I install it on
> Ubuntu 12.04 64-bit server I get the following error reported in the
> log file and monitoring doesn't work.
>
> [EDT Jun 24 21:26:20] error : State file '/var/lib/monit/state':
> Unable to read magic
>
> I installed monit with apt-get install monit and the version is 5.3.2
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/monit/+bug/1017327/+subscriptions
>

--
+
@ThomLuxford

Do you want me to rush the rush job I am rushing now, or rush the rush job
you wanted me to rush, before I rush the rush job I'm rushing now, or rush
the rush job I was rushing before?

[Sergey B Kirpichev (skirpichev)]

On Sat, Feb 08, 2014 at 11:55:16PM -0000, Thom Luxford wrote:
> I've determined that even with the HTTPD interface enabled it is not
> available immediately and one must wait a few minutes on 12.04 Ubuntu installs.

In general, if you don't restart monit every few minites - you
want this to be enabled.

But by default this is turned off since commit 3fae71b:
http://anonscm.debian.org/gitweb/?p=collab-maint/monit.git;a=commitdiff;h=3fae71b

> This was confusing because:
> On version 10.04 Ubuntu installations of monit, the HTTPD interface comes
> online immediately and does not wait for:
> with start delay <num>
> On version 12.04 Ubuntu installations of monit, the HTTPD interface waits
> for
> with start delay <num>

There is no "with start delay" option enabled by
default since 1:5.2.4-4. The only reason to wait may
be /etc/monit/monit_delay file (again, it doesn't exists by default).

> On Sat, Feb 8, 2014 at 8:10 AM, Sergey B Kirpichev <
> <email address hidden>> wrote:
>
> > > Have tried reinstalling monit
> >
> > Please, try to read monit documentaion and configure monit accordingly:
> > http://mmonit.com/monit/documentation/monit.html
> >
> > In the default setup - monit's httpd interface is not enabled. That's
> > why monit status doesn't work.
> >
> >
> > ** Changed in: monit (Ubuntu)
> > Status: Confirmed => Invalid
> >
> > ** Changed in: monit (Ubuntu)
> > Assignee: (unassigned) => Sergey B Kirpichev (skirpichev)
> >
> > --
> > You received this bug notification because you are subscribed to the bug
> > report.
> > https://bugs.launchpad.net/bugs/1017327
> >
> > Title:
> > Monit 5.3.2 not working on Ubuntu 12.04 x86_64
> >
> > Status in "monit" package in Ubuntu:
> > Invalid
> >
> > Bug description:
> > I have monit working on several servers but when I install it on
> > Ubuntu 12.04 64-bit server I get the following error reported in the
> > log file and monitoring doesn't work.
> >
> > [EDT Jun 24 21:26:20] error : State file '/var/lib/monit/state':
> > Unable to read magic
> >
> > I installed monit with apt-get install monit and the version is 5.3.2
> >
> > To manage notifications about this bug go to:
> > https://bugs.launchpad.net/ubuntu/+source/monit/+bug/1017327/+subscriptions
> >
>
>
> --
> +
> @ThomLuxford
>
> Do you want me to rush the rush job I am rushing now, or rush the rush job
> you wanted me to rush, before I rush the rush job I'm rushing now, or rush
> the rush job I was rushing before?
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1017327
>
> Title:
> Monit 5.3.2 not working on Ubuntu 12.04 x86_64
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/monit/+bug/1017327/+subscriptions