Tags: svn

07/28/13

  01:14:00 pm, by The Dreamer   , 3144 words  
Categories: Software, Operating Systems, Ubuntu, FreeBSD, CFEngine

Last two weekends - nagios and more cfengine 2 & 3

So, what started as take a week to set up a new nagios server at work ended up taking almost a month...because there were many days where I'd only have an hour or less to put some time into the side task. The other stumbling block was I had decided that the new nagios server configuration files would get managed under subversion, instead of RCS as it had been done in the previous two incarnations. New SA's don't seem to understand RCS and that the file is read-only for a reason...and its not to make them use :w! ... which lately has resulted in a the sudden reappearance of monitors of systems that had been shutdown long ago.

Though now that I think of it, there used to be the documented procedure for editing zone files (back when it was done directly on the master nameserver and version controlled by RCS.) Which as I recall was to perform an rcsdiff, and then use the appropriate workflow to edit the zone file.

% rcsdiff zonefile

if differences

      % rcs -l zonefile
      % ci -l zonefile
        make rude comment that somebody made edits
      % vi zonefile
      % ci -u zonefile

else

      % co -l zonefile
      % vi zonefile
      % ci -u zonefile

fi

But, when I took over managing DNS servers, I switched to having cfengine manage them and the zone files now live under masterfiles, so version control is now done using subversion. Had started butchering the DNS section in the wiki, probably should see about writing something up on all the not so simple things I've done to DNS since taking it over...like split, stealth, sed processing of master zone for different views, DNSSEC, the incomplete work to allow outside secondary to take over as master should we ever get a DR site, and other gotchas, like consistent naming of slave zone files now that they are binary.

Additionally work on the nagios at work was hampered by the fact that for Solaris and legacy provisioning is CF2, and the new chef based provisioning is still a work in progress...where I haven't had time to get into any of it yet. So, I had to recreate my CF3 promises for nagios in CF2.

But Friday before last weekend it finally reached the point where it was ready to go live. Though I've been rolling in other wishlist items and smashing bugs in its configuration, and still need to decide what the actual procedure will be for delegating sections of nagios to other groups.

One of the things I had done with new nagios at work, was set up PNP4Nagios...as I had done at home. And, while looking to see if I needed to apply performance tweaks to the work nagios, all the pointers were to have mrtg or cacti collect and plot data from nagiostats. Well, a new work cacti is probably not going to happen anytime soon, and the old cacti(s) are struggling to monitor what they have now (I spent some time a while back trying to tune one them...but its probably partly being hampered by the fact that its mysql can use double the memory that is allocated to the VM. though reducing it from running 2 spine's of 200 threads each...on the 2 CPU VM to a single spine with fewer threads has helped. Something like the boost plugin would probably help in this case, but the version of cacti is pre-PIA. But, it could be a long time before it get's replaced (not sure if upgrade is possible....) Our old cacti is running on a Dell poweredge server that has been out of service over 6 years... with the cacti instance over 8 years old (Jul 8, 2005)....and the OS is RHEL3.

Anyways, it occurs to me that there should be a way to get PNP4Nagios to generate the graphs, and I search around and find check_nagiostats. Though no template for it. Oh, there's a template nagiostats.php, if I create a link for check_nagiostats.php it should get me 'better' graphs. Which is what I have CF2 do at work.

Full story »

Pages: 1· 2· 3

06/24/13

  08:57:00 am, by The Dreamer   , 838 words  
Categories: Home Theatre, Software, Momitsu V880N, FreeBSD, CFEngine

This just in, cfengine developers don't test or use cfengine!?

So, this morning I was was wonder why my nagios was still warning about something that it shouldn't be. I was positive I had changed the warning threshold above where it was. I do an 'svn status' on my work dir, nothing uncommitted. I do an 'svn up' on the cfengine server....no updates, I drill down to the file and its correct (perhaps I need an alias on this side as well...though I usually only use 'cdn' for where my svn work dir is or on the nagios server....though its because at work....where this alias is used in association with nagios as well (where work nagios is not yet managed by cfengine, but was considering it for the new nagios server that I'm trying to set up between fires and stuff at work....except the fact that we're still running cfengine2 is really starting to become a problem......though I wonder if cfengine2 could do it, if it weren't hampered by how former admin had implemented things....The work cfengine made a mess with using it to setup a new system because of weird cross interactions between 'promises' and that the promise wasn't written in the same sequence it was running, things that probably aren't a problem when cfengine was original deployed to promise that nothing ever changes....)

Anyways....I finally hunt through the -v output... which is now not much different than debug noise, and nothing like what verbose used to be in 3.4.4.....no more search for 'E nagios' to find where the start of "BUNDLE nagios" is in the out, and then finding the specific file promise..... what a mess. Its like they don't want you to know what's going wrong....

Turns out I missed some more uses of 'recurse' from cfegine_stdlib.cf, where xdev=true is busted.

It was one of three bugs that I had logged for cfengine 3....#2983. Which was almost immediately flagged as a duplicate of #2965 (3.5.0rc fails to recursively copy files with strange message)...and this morning at 5:03am, my bug was closed as that it indeed seems to be fixed for 3.5.1 (soon...).

Wonder what the definition of soon is....had a previous problem where cfengine was complaining about bad regex....when the default for insert_lines: is that they are 'literal' strings. Which was making it hard to use cfengine 3.4.x to make edits to my crontab files. After putting up with it for a couple of months, I finally visit the bug tracker and find that its already been reported and fixed for next version. But, months and months go by and no new version appears. Though it does seem to be fixed in 3.5.0.

Anyways reading #2965 was interesting.... aside from where the dev? spots another bug in the same code and has that pulled as part of the bug. Also that it was reported against RC, and made it into release. Though I had reported a bug in against an ubuntu 12.04 beta release....and it persisted into the release version, where they debated fixing it because apparently LTS means don't update anything after its release...(though I thought they had said things like firefox would stay current instead of staying fixed at the version at time of release now...) Plus it seemed I had to keep reminding them that my bug was reported before release, so that should be reason enough to release the fix. I'm pretty sure they did, but I hardly use that ubuntu desktop anymore (or any ubuntu desktop....though I did fire up my laptop yesterday, but its because there was a new VirtualBox and I hadn't updated the XP VM on there in quite some time....though I've been thinking of whether a FreeBSD laptop is feasible.)

Someone asks that they have a unit test for this bug. Where the response is a unit test would need a running server, which they don't have (yet)...how long has cfengine been around for them to not be using it? Sure wouldn't want to be somebody who's paying for this.

So does that mean nothing is being tested, and that nobody involved in development use cfengine? Because this was the kind of bug that pretty much anybody that uses cfengine3 would run into. Considering I only have the 3 systems (zen - policyserver, cbox, dbox) at the moment....

Perhaps I'm jaded by having worked for an Enterprise software company and how we did full builds every week, and with full runs of automated and manual QA testing. And, having to create unit tests for less than trivial bugs as part of fix/review before closure process. Though what I'm hearing about Chef...its worse....

Still haven't decided what I'm going to do with my Linux systems....migrating the files from Orac if I were to turn it into FreeBSD is the stumbling block, plus I would lose certain services...some of which might not really be an issue, since its probably time I make the leap to blu-ray. And, either I get another Roku or figure out how to incorporate the smart side of my TV into my life (probably time to finally upgrade my receiver....purchased October 27th, 1999)....

Now instead of subjecting some poor random forum to a long rambling thought, I will try to consolidate those things into this blog where they can be more easily ignored profess to be collected thoughts from my mind.

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