Re: unversal watchdog
On Wed, Mar 01, 2006 at 10:20:03PM -0700, M. Warner Losh wrote: : You can do it with /etc/ttys. Actually this point is missing by many : FreeBSD administrators, people just think of /etc/ttys in term of : terminals and stuff :) But if youi'll open the man page you would : found the following: It may have already been volunteered already; has the OP explored daemontools? I'll note that its master 'svscan' script is launched by an rc.d script (a decision of the port maintainer), not init directly, but that's not a hard change to affect... Warner -- Brian Reichert [EMAIL PROTECTED] 55 Crystal Ave. #286Daytime number: (603) 434-6842 Derry NH 03038-1725 USA BSD admin/developer at large ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: unversal watchdog
In message: [EMAIL PROTECTED] Alex Semenyaka [EMAIL PROTECTED] writes: : On Mon, Feb 27, 2006 at 05:41:32PM +0700, Vitaliy Ovsyannikov wrote: : Hello, freebsd-hackers. :I've stuck with the unable to make watchdogs for daemons running via : startup rc-scripts. In linux we can just put the process in the : inittab. Does FreeBSD contains ability like this? : : You can do it with /etc/ttys. Actually this point is missing by many : FreeBSD administrators, people just think of /etc/ttys in term of : terminals and stuff :) But if youi'll open the man page you would : found the following: : : The first field is normally the name of the terminal special file as it : is found in /dev. However, it can be any arbitrary string when the asso- : ciated command is not related to a tty. : : So you can perfectly run any program there and init will watch or it, just : like in linux. The behavior goes back to at least 4.2 BSD (not FreeBSD 4.2, but 4.2 BSD). I've used it on old SunOS 3.x boxes too... Warner ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: unversal watchdog
On Tue, Feb 28, 2006 at 07:26:26AM +0300, Alex Semenyaka wrote: On Mon, Feb 27, 2006 at 05:41:32PM +0700, Vitaliy Ovsyannikov wrote: Hello, freebsd-hackers. I've stuck with the unable to make watchdogs for daemons running via startup rc-scripts. In linux we can just put the process in the inittab. Does FreeBSD contains ability like this? You can do it with /etc/ttys. Actually this point is missing by many FreeBSD administrators, people just think of /etc/ttys in term of terminals and stuff :) But if youi'll open the man page you would found the following: The first field is normally the name of the terminal special file as it is found in /dev. However, it can be any arbitrary string when the asso- ciated command is not related to a tty. So you can perfectly run any program there and init will watch or it, just like in linux. -- Sincerely, Alex Semenyaka But, just to be aware, see PR bin/64198. Best regards, Kostik Belousov pgpXwbb1rHQcO.pgp Description: PGP signature
Re: unversal watchdog
On Monday 27 February 2006 21:11, Vitaliy Ovsyannikov wrote: I've stuck with the unable to make watchdogs for daemons running via startup rc-scripts. In linux we can just put the process in the inittab. Does FreeBSD contains ability like this? Create a script for /etc/rc.d (or /usr/local/etc/rc.d) - with a suitable entry in rc.conf it will be started at boot. man rc.subr plus a look through /etc/rc.d should get you started :) -- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au The nice thing about standards is that there are so many of them to choose from. -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C pgpgP5aYu5S1x.pgp Description: PGP signature
Re: unversal watchdog
On Mon, Feb 27, 2006 at 09:53:17PM +1030, Daniel O'Connor wrote: On Monday 27 February 2006 21:11, Vitaliy Ovsyannikov wrote: I've stuck with the unable to make watchdogs for daemons running via startup rc-scripts. In linux we can just put the process in the inittab. Does FreeBSD contains ability like this? Create a script for /etc/rc.d (or /usr/local/etc/rc.d) - with a suitable entry in rc.conf it will be started at boot. man rc.subr plus a look through /etc/rc.d should get you started :) Can you explain in more detail how one can handle the watchdog part of the equation? I can't find that information in the rc.subr manpage. thanks, Tobias ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: unversal watchdog
On Monday 27 February 2006 22:33, Tobias Roth wrote: man rc.subr plus a look through /etc/rc.d should get you started :) Can you explain in more detail how one can handle the watchdog part of the equation? I can't find that information in the rc.subr manpage. Ahh sorry I think I misunderstood the question :( I was thinking a program to reset a hardware watchdog timer.. As to answer the question - I am not aware of any facility for automatically restarting things (unless you can get init to do it via /etc/ttys somehow) I don't think it would be too hard to create a shell wrapper script though (kind of annoying I admit) -- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au The nice thing about standards is that there are so many of them to choose from. -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C pgplb4lPVzUkp.pgp Description: PGP signature
Re: Re: unversal watchdog
From: Daniel O'Connor [EMAIL PROTECTED] On Monday 27 February 2006 22:33, Tobias Roth wrote: man rc.subr plus a look through /etc/rc.d should get you started :) Can you explain in more detail how one can handle the watchdog part of the equation? I can't find that information in the rc.subr manpage. Ahh sorry I think I misunderstood the question :( I was thinking a program to reset a hardware watchdog timer.. As to answer the question - I am not aware of any facility for automatically restarting things (unless you can get init to do it via /etc/ttys somehow) Would a port of a Linux init do ? :-) You know, it's all separate packages on Linux and there is no reason why they can't be ported and used separately. Here is the package name from RedHat: $ rpm -qf /sbin/init SysVinit-2.85-4.2 I don't know if there is a ready port but it should be not THAT difficult to do. I don't think it would be too hard to create a shell wrapper script though (kind of annoying I admit) Well, it's been a long story now. Every time someone comes with the idea of adding init to BSD, other people feel very strongly that they hate init and that it must not be in BSD. -SB ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: unversal watchdog
dc As to answer the question - I am not aware of any facility for dc automatically restarting things (unless you can get init to do dc it via /etc/ttys somehow) Wasn't there a port of launchd in the wings? -- FreeBSD Volunteer, http://people.freebsd.org/~jkoshy ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: unversal watchdog
Vitaliy Ovsyannikov wrote: Hello, freebsd-hackers. I've stuck with the unable to make watchdogs for daemons running via startup rc-scripts. In linux we can just put the process in the inittab. Does FreeBSD contains ability like this? try sysutils/daemontools -- Deomid Ryabkov aka Rojer [EMAIL PROTECTED] [EMAIL PROTECTED] ICQ: 8025844 smime.p7s Description: S/MIME Cryptographic Signature
Re: Re: unversal watchdog
On Mon, Feb 27, 2006 at 07:20:45AM -0600, Sergey Babkin wrote: Well, it's been a long story now. Every time someone comes with the idea of adding init to BSD, other people feel very strongly that they hate init and that it must not be in BSD. /sbin/init existed on BSD almost forever. You could fake a tty to use it for restarting the programs. But the real issue is what restart functionality the OP really wants. There's more than one way to do it and whether the SysV init approach is appropiate depends. E.g. what happens if some part of the configuration is rejected and the daemon just spins? Joerg ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: unversal watchdog
Vitaliy Ovsyannikov wrote this message on Mon, Feb 27, 2006 at 17:41 +0700: I've stuck with the unable to make watchdogs for daemons running via startup rc-scripts. In linux we can just put the process in the inittab. Does FreeBSD contains ability like this? yes, you can use ttys(5) for this... You will get an extra argument or two... but a wrapper script can handle that for you... Though you need to have the daemon run in foreground mode, so that when it dies init knows it did, and restarts it... -- John-Mark Gurney Voice: +1 415 225 5579 All that I will do, has been done, All that I have, has not. ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: unversal watchdog
In message: [EMAIL PROTECTED] Daniel O'Connor [EMAIL PROTECTED] writes: : As to answer the question - I am not aware of any facility for automatically : restarting things (unless you can get init to do it via /etc/ttys somehow) : : I don't think it would be too hard to create a shell wrapper script though : (kind of annoying I admit) Actually, putting it in /etc/ttys with a fake device name is the canonical way to get this functionality. We do it all the time at work and it works out well. Warner ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: unversal watchdog
On Mon, Feb 27, 2006 at 05:41:32PM +0700, Vitaliy Ovsyannikov wrote: Hello, freebsd-hackers. I've stuck with the unable to make watchdogs for daemons running via startup rc-scripts. In linux we can just put the process in the inittab. Does FreeBSD contains ability like this? You can do it with /etc/ttys. Actually this point is missing by many FreeBSD administrators, people just think of /etc/ttys in term of terminals and stuff :) But if youi'll open the man page you would found the following: The first field is normally the name of the terminal special file as it is found in /dev. However, it can be any arbitrary string when the asso- ciated command is not related to a tty. So you can perfectly run any program there and init will watch or it, just like in linux. -- Sincerely, Alex Semenyaka ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to [EMAIL PROTECTED]
