[naemon-dev] Naemon Livestatus update

[Max Sikström]

Hi!

I’ve tried to keep up reading what changes had happend to livestatus upstream. But it’s quite hard to track, since livestatus is just a subdirectory in the check_mk repository.

As far as I can see, there are just a few new features resolved in the upstream livestatus since the fork:
- statehist table is added
- bugfixes with the log table
- fixes with livecheck, and later removal of the livecheck

Since log handling in livestatus is really nasty to use, because of how just increases in memory usage (since livestatus never deallocates it’s growing buffer. Once parsed 1GB of logs, 1GB of memory is stored per thread, afaik), I’ve assumed that check_mk was the only system really used that part.


I don’t want to see it as naemon-livestatus is older, but just a little bit different.

The naemon fork of livestatus has taken a path through op5 before ending up as the naemon-fork.  During that time, some issues has been resolved:
- Add sorting (and pagination) support, and some bugfixes too. (Sort: column_name asc/desc, Offset: 80, Limit: 20)
- Regexp handles case sensitivity for unicode characters correctly (it’s really new, so I’m not sure if it’s in master yet. Just know that Anton Löfgren/catharsis has it in a branch right now)

In the naemon-fork, there are also a couple of bug fixes:
- Possible segfault due to races between threads when submitting commands. (Command processing in upstream is done in worker thread, but naemon/nagios isn’t thread safe itself, since it doesn’t use threads)

In short: naemon-livestatus and mk-livestatus has diverged, and before it’s practical to upstream changes, it probably will be too.


So are there any specific features you need or bugs to resolve in naemon-livestatus that are available in mk-livestatus? Because then, it’s probably quite easy to just port those specific ones. 

Best regards,
Max Sikström

On 28 Mar 2014, at 19:58, Eron Nicholson <eron at basecamp.com> wrote:

> Hello,
>  I am attempting to use Naemon with Check_MK.  Check_MK released a
> new version of livestatus today (1.2.5i1) which supports Nagios 4.
> However, I am getting errors when trying to use it with Naemon :
> 
> [1396026973] Error: Could not load module
> '/usr/lib/check_mk/livestatus.o' -> /usr/lib/check_mk/livestatus.o:
> undefined symbol: get_next_log_rotation_time
> [1396026973] Error: Failed to load module '/usr/lib/check_mk/livestatus.o'.
> [1396026973] Error: Module loading failed. Aborting.
> 
> We have been having issues with the forked naemon version of
> livestatus crashing.  We push in a lot of passive services, and it
> seems that this is causing livestatus to crash.  The forked version is
> quite old.  I was wondering if there was a plan to update naemon's
> livestatus to a more recent version or if there was a plan to allow
> naemon to integrate with the latest version of livestatus.
> 
> Thanks,
> 
> Eron Nicholson
> Systems Administrator | Basecamp

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