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| === AlexExtreme looks through his logs to find that profiles discussion | ||
| AlexExtreme | oops | 10:12 |
|---|---|---|
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| asdaf | hello, I have a question, is there any way to prevent script stanzas to be executed by a shell with -e option? | 03:53 |
| ion_ | Why would you not want -e? | 04:02 |
| AlexExtreme | you can easily prevent the script from terminating if a certain command fails by putting || true after the command | 04:02 |
| asdaf | ion_, sometimes is a bit constraining | 04:04 |
| asdaf | you may want to let something fail ignoring the failure | 04:05 |
| AlexExtreme | <AlexExtreme> you can easily prevent the script from terminating if a certain command fails by putting || true after the command | 04:05 |
| AlexExtreme | you can ^^ | 04:05 |
| asdaf | AlexExtreme, that's what I'm doing | 04:05 |
| asdaf | but it's not very elegant to put a lot of ||true in the scripts :) | 04:06 |
| asdaf | I agree -e should be the normal behaviour | 04:06 |
| asdaf | but I think it may be useful to have a way to switch off this option | 04:06 |
| asdaf | say an option in the job description | 04:07 |
| AlexExtreme | or do like this: | 04:07 |
| AlexExtreme | pre-start script nofail | 04:08 |
| AlexExtreme | blah | 04:08 |
| AlexExtreme | end script | 04:08 |
| asdaf | Is this an already implemented option? | 04:08 |
| AlexExtreme | no, i'm saying an example of how it could be implemented :) | 04:09 |
| AlexExtreme | if it were implemented i would have told you in the first place :) | 04:09 |
| asdaf | AlexExtreme, ok :) this would be nice | 04:09 |
| Keybuk | why not just put "set +e" at the top of the script? | 04:10 |
| Keybuk | pre-start script | 04:10 |
| Keybuk | set +e | 04:10 |
| Keybuk | # broken stuff | 04:10 |
| Keybuk | end script | 04:10 |
| AlexExtreme | hmm. that's a point | 04:10 |
| AlexExtreme | i'm forgetful sometimes ;) | 04:11 |
| asdaf | Keybuk, right, that's the easiest way :) | 04:26 |
| asdaf | but i like the syntax AlexExtreme proposed :) | 04:27 |
| AlexExtreme | well, if there's a way to do it already a new syntax would be pointless | 04:27 |
| asdaf | AlexExtreme, it's just semantic sugar, but maybe putting it into the script declaration would be more explicit | 04:32 |
| AlexExtreme | maybe | 04:33 |
| Keybuk | I don't really see the need for the semantic sugar | 04:34 |
| Keybuk | -e is a sensible default, and sh gives you a mechanism to turn it off | 04:34 |
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| rgl | hi | 04:36 |
| rgl | on ubuntu edgy upstart is not installed by default? | 04:37 |
| AlexExtreme | it is | 04:38 |
| rgl | mine is not :| | 04:39 |
| rgl | I've upgraded from previous version. | 04:39 |
| AlexExtreme | did you upgrade from an older version? | 04:39 |
| AlexExtreme | ah | 04:39 |
| rgl | oh, but I did an aptget update, and now it wants to install upstart | 04:39 |
| Keybuk | the Ubuntu release notes recommend the dist-upgrader tool over apt-get | 04:56 |
| Keybuk | what's happened is APT has refused to remove the previously Essential sysvinit | 04:56 |
| Keybuk | without taking into account that sysvinit is no longer Essential, and has been replaced by Upstart | 04:56 |
| rgl | oh, I see. | 05:19 |
| rgl | why is the need for anther tool? :| | 05:19 |
| rgl | humm, but after this apt-get dist-upgrade, the sysvinit was removed, and replaced with upstart. | 05:21 |
| rgl | humm, not when I do an "apt-get install" it says: 0 upgraded, 0 newly installed, 0 to remove and 29 not upgraded. | 05:22 |
| rgl | but how can I see the "29 not upgraded"? | 05:23 |
| rgl | how, they show up when I do: apt-get -s dist-upgrade ... | 05:24 |
| rgl | how can I see the reason for holding back a package? the 29 packages are all python-* ones | 05:25 |
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| rgl | is there a upstart manual? some place that shows what events are availble? | 07:30 |
| Keybuk | any event you emit with initctl is available | 07:30 |
| rgl | but where are the standard ones defined? | 07:32 |
| === rgl "initctl emit " does not work with 0.2.7 | ||
| Keybuk | they aren't at this point | 07:34 |
| Keybuk | Upstart is still in development, as are the sets of "standard" events | 07:34 |
| rgl | oh ok. | 07:35 |
| rgl | the "restart" stanza restarts the daemon if it dies, correct? and "exec" only starts it once? | 07:36 |
| AlexExtreme | it's respawn | 07:36 |
| rgl | oh yes. "respawn", my bad hehe | 07:37 |
| Keybuk | you shouldn't use "respawn SOMETHING" | 07:38 |
| Keybuk | use | 07:38 |
| Keybuk | respawn | 07:38 |
| Keybuk | exec /sbin/daemon | 07:38 |
| Keybuk | -- | 07:38 |
| Keybuk | otherwise you'll be bitten when you upgrade to 0.3.x (which only permits respawn on its own line0 | 07:38 |
| rgl | Keybuk, oh, I saw the respawn line on "logd", and it has no exec :| | 07:39 |
| Keybuk | sure, because the same file in 0.3.x has two lines | 07:39 |
| rgl | how can I do this: have a "php-fastcgi" service that does nothing (it just emits the "php-fastcgi" event) and have several "php-fascgi-1", "php-fascgi-2", etc, that are started/stop when ""php-fascgi" is started/stoped? | 07:42 |
| rgl | I can just "exec /bin/true" on "php-fastcgi", and "start on php-fastcgi" on the "php-fastcgi-N"? | 07:43 |
| Keybuk | why do you want to do that? | 07:47 |
| rgl | I want to start several PHP FastCGI instances without having to start each one by hand. | 07:49 |
| esr | Keybuk: Sounds like you're an upstart core dev. | 07:50 |
| rgl | I mean, I want to "start php-fcgi" and let upstart do a "start php-fcgi-N" for all the PHP FastCGI instances I've defined. | 07:50 |
| Keybuk | are the instances different in configuration? | 07:51 |
| Keybuk | esr: s/an/the/ :-) | 07:51 |
| rgl | Keybuk, they are. each one open a different unix domain socket. | 07:51 |
| Keybuk | ok; yeah you could do pretty much what you describe | 07:53 |
| Keybuk | though the exec /bin/true would terminate and you couldn't stop them with the same command | 07:53 |
| rgl | how? :) | 07:53 |
| rgl | yeah, I've did that. and it just fails to start the other PHP instances *G* | 07:53 |
| Keybuk | you're using 0.2.7? | 07:53 |
| rgl | the alternative was to have a master one, but if that master dies for some reason, it will brong the other instances down, and then up again. which is not good :( | 07:54 |
| rgl | Keybuk, yes. 0.2.7 on edgy. | 07:54 |
| Keybuk | try start on php-fastcgi/started | 07:54 |
| === Keybuk tries to remember the syntax | ||
| Keybuk | there's an interesting use case for instances here | 07:55 |
| rgl | Keybuk, like http://pastie.caboo.se/66161 ? | 07:58 |
| Keybuk | yes, though it'll stop pretty quick | 07:58 |
| Keybuk | since "/bin/true" doesn't last long | 07:58 |
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| rgl | yeah. so, no good | 07:58 |
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| rgl | I would be nice to have "virtual" services, that is, a service with no "exec" is a "virtual" service; when you "start" a virtual service it just "remebers" it is started, and so on. | 08:00 |
| AlexExtreme | if you use 0.3 you can simply define a job without any exec for the main job iirc | 08:00 |
| Keybuk | rgl: we have those ;-) | 08:00 |
| rgl | ah cool :) :) | 08:00 |
| Keybuk | oh | 08:00 |
| Keybuk | random bug on your paste | 08:00 |
| Keybuk | you need "runlevel-2" and "runlevel-1" | 08:00 |
| rgl | Keybuk, oh, thats a bug on the wiki page then! *G* | 08:01 |
| Keybuk | the wiki documents 0.3.8 | 08:01 |
| rgl | actually, http://upstart.ubuntu.com/getting-started.html | 08:01 |
| rgl | is there a backport of 0.3.8 to edgy? or I can just recompile, and go with it? | 08:02 |
| AlexExtreme | you'd be better off upgrading to feisty IMO | 08:02 |
| Keybuk | you can probably just download the packages from feisty and install them | 08:02 |
| Keybuk | (YMMV, NUSPIS, WVIR) | 08:02 |
| rgl | AlexExtreme, I can't right now. | 08:02 |
| rgl | can I go away with just upgrading the upstart package? or do I have to upgrade all upstart-* ? | 08:05 |
| Keybuk | all | 08:05 |
| Keybuk | upstart, upstart-compat-sysv, system-services, startup-tasks, etc. | 08:05 |
| rgl | "etc" is "upstart-logd"? :) | 08:08 |
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| Keybuk | right | 08:09 |
| === Keybuk postulates | ||
| Keybuk | instance | 08:09 |
| Keybuk | for file-exists /etc/event.d/php-fcgi-* | 08:10 |
| Keybuk | (err, /var/run/php/fcgi.*) | 08:10 |
| Keybuk | exec /usr/bin/php5-cgi -b $FILE | 08:10 |
| Keybuk | bit sticky, but that might work in 0.5 | 08:10 |
| rgl | oh: | 08:13 |
| rgl | dpkg: regarding upstart_0.3.8-1_i386.deb containing upstart, pre-dependency problem: | 08:13 |
| rgl | upstart pre-depends on libc6 (>= 2.5-0ubuntu1) | 08:13 |
| rgl | libc6 is installed, but is version 2.4-1ubuntu12.3. | 08:13 |
| Keybuk | oh | 08:13 |
| Keybuk | meh, you'd have to rebuild then | 08:13 |
| Keybuk | crappy packaging system | 08:13 |
| rgl | but the damn think installated the other packages ... oh oh | 08:13 |
| Keybuk | you should find packages to downgrade to in /var/cache/apt/archives | 08:14 |
| Keybuk | if not, download them again | 08:14 |
| AlexExtreme | dpkg is crappy or just the dependencies? ;) | 08:14 |
| Keybuk | AlexExtreme: both :p | 08:14 |
| AlexExtreme | :) | 08:14 |
| Keybuk | actjal, | 08:14 |
| Keybuk | actually | 08:14 |
| Keybuk | dpkg is crappy | 08:14 |
| Keybuk | since the packages *do* have dependencies, that doesn't stop dpkg from overwriting the old ones though | 08:14 |
| rgl | Keybuk, what do you mean with "0.5"? | 08:15 |
| Keybuk | rgl: 0.5 is the version of upstart I'm working towards at the moment; it has a few interesting features | 08:15 |
| esr | Keybuk: Are the System V runlevels going to continue to have any real meaning in an upstart environment? I'm asking because I've written a workalike of chkconfig that uses update-rc.d as a back end. | 08:16 |
| Keybuk | esr: we're always going to have to support packages that assume System V, because they'll exist for as long as vendors support them | 08:16 |
| rgl | Keybuk, humm, so I can't make it work with 0.3.8? | 08:16 |
| Keybuk | rgl: you can do it your way with 0.3.8 (have a master job, and use it to start/stop other jobs) | 08:17 |
| Keybuk | esr: so we'll always ship jobs that run the legacy sysv-rc script | 08:17 |
| Keybuk | esr: I don't think that runlevels make much sense in a pure Upstart environment, since they're pretty arbitrary and poorly defined across even Linux distros | 08:17 |
| esr | Can I give you a copy of my chkconfig clone to package with upstart, then? Some third-party apps expecting a System-V like runlevel setup actually depend on it. | 08:18 |
| === AlexExtreme currently runs a system with absolutely no /etc/rc.d at all ;) | ||
| esr | It's pure bash plus sed. There's a man page. | 08:19 |
| Keybuk | esr: it'd certainly make sense to have it packaged in Ubuntu | 08:19 |
| esr | That's what I'm thinking. I'm running Ubuntu and it's the environmrnt I wrote chkconfig for. | 08:20 |
| AlexExtreme | hmm, dot compiled with pango and cairo support makes the state machine diagram look so much better :P | 08:25 |
| esr | Keybuk: Where should I mail the code and man page for your consideration? | 08:27 |
| AlexExtreme | upstart-devel@lists.ubuntu.com | 08:27 |
| Keybuk | AlexExtreme: got a patch? I can fix our graphviz <g> | 08:28 |
| AlexExtreme | hold on | 08:29 |
| AlexExtreme | http://ftp.frugalware.org/pub/frugalware/frugalware-current/source/xapps-extra/graphviz/FrugalBuild << the necessary depends and compile options are in there | 08:30 |
| Keybuk | could you mail that me (scott@ubuntu.com); I'm in the middle of three things right now :-/ | 08:31 |
| AlexExtreme | sure | 08:31 |
| AlexExtreme | done | 08:32 |
| esr | Keybuk: Code and man page mailed. And best of luck on the world domination thing -- I think upstart is very elegant, I'd like to see it win. | 08:48 |
| Keybuk | thanks | 08:50 |
| rgl | Keybuk, so, you are working on 0.5, but is there a 0.4? :D | 09:08 |
| rgl | Keybuk, humm, as of 0.3.8, the logd service still uses respawn /sbin/logd | 09:15 |
| Keybuk | no, there's no 0.4 | 09:20 |
| rgl | ACK :D | 09:20 |
| AlexExtreme | <curiousity>why not?</curiousity> | 09:21 |
| rgl | oh, there seems to be a bug on 0.3.8. when you do a "start php-fcgi" (my service that does no have a exec), start never ends :-( | 09:21 |
| rgl | it stays at prompt waiting for something (stdin?) | 09:22 |
| AlexExtreme | you need to put the service keyword in the job file | 09:22 |
| AlexExtreme | otherwise initctl assumes that it needs to wait for something to finish ;) | 09:22 |
| rgl | what service keyword? :D | 09:23 |
| AlexExtreme | just write a line saying 'service' in the job file | 09:23 |
| rgl | humm, but what is initctl waiting for? there is no exec line, so, why not assumer "service" automatically? | 09:24 |
| AlexExtreme | well | 09:24 |
| rgl | AlexExtreme, that did the trick. thx :D | 09:25 |
| AlexExtreme | a job without anything to run is a state afaik, so initctl will remain running while the system is in that 'state'. once it is stopped initctl will exit | 09:25 |
| rgl | you are talking chinese to me hehe | 09:26 |
| AlexExtreme | heh ;) | 09:27 |
| rgl | there is a "start", a "stop", but well, no "restart", howcome? *G* | 09:28 |
| rgl | (comand line utility that is ;) | 09:28 |
| AlexExtreme | if you want a restart, simply write a script :) | 09:28 |
| AlexExtreme | #!/bin/bash | 09:28 |
| AlexExtreme | stop $1 && start $1 | 09:29 |
| rgl | why not follow the route of red-hat with "service start service-name"? | 09:29 |
| AlexExtreme | :) | 09:29 |
| rgl | OT: how do I extract the number from the string "php-fcgi-1" using bash? :| | 09:38 |
| rgl | echo php-fcgi-1 | sed 's,.*-(\\d+),\\1,g' does not seem to do the trick :( | 09:38 |
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| rgl | how do I get the name of the service file from within a "script" block? | 10:00 |
| rgl | got it... its the UPSTART_JOB env variable (read from http://upstart.ubuntu.com/wiki/JobEnvironmentVariable) | 10:03 |
| rgl | how, why do I need to have a "service" keyword on the service file? :| | 10:12 |
| rgl | can't make this work :( | 10:23 |
| rgl | can you look at http://pastie.caboo.se/66237 ? | 10:23 |
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