| erikh | hello friends, I have a simple question -- I'm managing a daemon that needs a somewhat complicated set of signals to do a graceful restart (unicorn, for what it's worth). How would I accomplish this in upstart? | 00:54 |
|---|---|---|
| erikh | It doesn't seem I can specify a specific command for restart or reload events -- but maybe I'm missing something in the docs. | 00:54 |
| axisys | I got it working.. there was a ``-f'' switch to run devmon in foreground.. that did the trick | 02:33 |
| axisys | erikh: https://improvise.wordpress.com/2012/05/30/run-devmon-using-upstart-script/ | 02:34 |
| axisys | erikh: oops.. wrong window.. | 02:34 |
| erikh | np | 02:52 |
| SpamapS | erikh: unfortunately you can't customize reload/restart in upstart yet | 06:10 |
| SpamapS | erikh: one thing you can do is write a small daemon to translate HUP to whatever you want. restart is always stop/start in upstart..and I doubt that will change. | 06:11 |
| SpamapS | erikh: probably best to just scold the unicorn devs for not handling HUP properly if they don't, and use a separate program to send the occasional SIGUSR1 or whatever is the "graceful" thing when you need that. | 06:12 |
| mrvn | moin. Can anyone help me get upstart to talk? I have --debug --verbose in the kernel command line but all I get is [ 46.171081] init: Failed to create pty - disabling logging for job | 11:23 |
| xnox | mrvn: what's the upstart version? recently it started to spew per job logs. | 11:28 |
| mrvn | precise | 12:08 |
| mrvn | whatever version that is | 12:09 |
| mrvn | /var/log/upstart is empty | 12:10 |
| mrvn | Under Lucid I get "init: Handling startup event" and tons of tons of other evnts. Those have disapeared too. | 12:11 |
| xnox | jodh: ^^^^ | 12:21 |
| xnox | mrvn: based on the http://upstart.ubuntu.com/cookbook/#debugging can you try adding both '--verbose' and '--debug' and check the syslog? | 12:25 |
| * xnox is guessing here. | 12:26 | |
| mrvn | syslog isn't running so /var/log/syslog isn't any help | 12:37 |
| xnox | true. | 12:38 |
| xnox | slangasek: might know. I haven't done upstart debugging much yet. I've debugged individual jobs, but that's past boot. | 12:39 |
| mrvn | I've used --debug / --verbose under lucid but with precise upstart simply stoped outputing anything. | 12:44 |
| xnox | There is a bug that /var/log/upstart is missing on cloud images. https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/990102 | 12:47 |
| xnox | but I don't see a bug about what you describe. | 12:47 |
| mrvn | I've got the dir, it just is empty. | 12:47 |
| jodh | mrvn: are you running upstart on a system with no initramfs? | 14:29 |
| jodh | mrvn: the error you get occurs when upstart fails to create a pty, possibly due to /dev/pts not being mounted. | 14:29 |
| slangasek | that was about to be my question :) | 14:29 |
| jodh | mrvn: for now, either arrange to have an initramfs or boot with '--no-log'. If /dev/pts gets mounted at a later part of the boot (by mountall), those pesky messages will disappear (and you'll see logs in /var/log/upstart/ potentially). | 14:30 |
| jodh | mrvn: the fix for this issue is for upstart to mount /dev and /dev/pts itself. | 14:31 |
| mrvn | jodh: /dev/pts is mounted, the messages persist | 14:33 |
| jodh | mrvn: how many messages do you get? you should get 1 / job that is failing to be logged. | 14:36 |
| mrvn | sounds about right | 14:37 |
| jodh | mrvn: so does the system boot? have you tried booting with '--no-log'? | 14:37 |
| mrvn | --no-log hides the problem. But I would rather have it fixed. | 14:45 |
| jodh | well, we need to understand what is triggering it for you as the only scenario I am aware of is where there is no initramfs. | 14:47 |
| mrvn | posix_openpt() is triggering it. It sets errno=2 (No such file or directory). | 14:47 |
| mrvn | crw-rw-rw- 1 root tty 5, 2 May 30 16:43 ptmx | 14:48 |
| mrvn | devpts on /dev/pts type devpts (rw,gid=5,mode=0620) | 14:48 |
| mrvn | The question is why? What else does it try to open? | 14:48 |
| erikh | SpamapS: thanks for your advice. | 14:48 |
| mrvn | And it still doesn't help in getting upstart debug messages back to the console. They now seem to silently disapear in dmesg and later in syslog. | 14:49 |
| jodh | mrvn: is this a standard Ubuntu Precise x86/amd64 system? | 14:53 |
| mrvn | not quite | 14:53 |
| mrvn | it boots via nfs-root, which requires some changes | 14:53 |
| jodh | mrvn: changes to what? | 14:54 |
| mrvn | e.g. mountall doesn't work so I have to mount stuff myself. | 14:54 |
| jodh | mrvn: I think you should raise a bug on this with full details. Ultimately, if posix_openpt() fails, there isn't much Upstart can do aside from disabling job logging for the job in question. And thats exactly what it does. | 14:55 |
| mrvn | The error should come for any job with "console output" in it right? | 14:57 |
| jodh | mrvn: actually, no - it'll be for every job that either doesn't specify "console" or does specify "console log" explicitly. See http://upstart.ubuntu.com/cookbook/#console-log, http://upstart.ubuntu.com/cookbook/#command-line-options, http://ifdeflinux.blogspot.co.uk/2012/05/job-logging-in-upstart-big-upstart.html | 14:59 |
| mrvn | Ok, one more thing to the PTY problem: If I "telinit u" to restart ubuntu then the problem goes away. | 16:32 |
| mrvn | Why isn't it enough to mount /dev? | 16:33 |
| SpamapS | mrvn: telinit u loses a lot of state in upstart | 16:45 |
| SpamapS | mrvn: not advisable on a running system | 16:46 |
| kevmo | Hi all, I created an upstart conf file in /etc/init/ and want to modify it, but the changes revert back to the original after a reboot. Also, if I delete the file, it comes back after a reboot. What am I missing here? | 18:07 |
| mrvn | kevmo: some form of netboot or initramfs based system | 18:07 |
| kevmo | Not doing a netboot. not sure what initramfs us | 18:10 |
| kevmo | is | 18:10 |
| qkslvrwolf | Is there a way to start an upstart job on desktop-start and connect to the display? | 18:21 |
| qkslvrwolf | I'm attempting to start selenium grid no virtual machines. I'd like to do this via upstart, but I need a way to allow the grid process access to the display. | 18:24 |
| === Md_ is now known as Md | ||
| JanC | qkslvrwolf: you would have to start it from inside the X session so that you know what display to connect to? | 20:46 |
| qkslvrwolf | JanC: I got it working, just not as cleanly as I'd like | 20:53 |
| qkslvrwolf | I actually used lubuntu autostart | 20:53 |
| JanC | hm, I wonder if the display manager passes DISPLAY=foo with the desktop-session-start event... | 20:54 |
| qkslvrwolf | that's good thought | 21:17 |
| qkslvrwolf | that would be nice | 21:17 |
| qkslvrwolf | although it would also need to pass the magic cookie or whatever | 21:18 |
| qkslvrwolf | unless I ran this as a user upstart job | 21:18 |
| qkslvrwolf | which I could also look into | 21:18 |
| qkslvrwolf | I would prefer to do it with upstart because then it would (theoreticlly) work for any version of ubuntu. | 21:18 |
| JanC | you could emit your own event on session startup and pass all variables you need | 21:22 |
| soren | qkslvrwolf: Do you actually need a real X server? | 22:36 |
| soren | qkslvrwolf: Why not just use xvfb? | 22:37 |
| soren | qkslvrwolf: Or, if you ever need to connect to it, use xpra. | 22:38 |
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