Welcome! Log In Create A New Profile

Advanced

[PATCH] Allow binary upgrades in Solaris zones

Anonymous User
January 05, 2011 02:24PM
Hello nginx-devel,

Thank you very much for nginx.

When running nginx in a Solaris zone, I am unable to do a binary upgrade without
fully stopping and starting nginx. When I send the master process a USR2 signal,
it refuses to do the upgrade and writes the following log message:

2011/01/04 16:00:23 [crit] 3818#0: the changing binary signal is ignored: you should shutdown or terminate before either old or new binary's process

After looking at the code, it seems that nginx assumes if the master process's parent
does not have PID == 1, then nginx is not running in stand-alone daemon mode and the
upgrade should not be attempted.

My problem is that in Solaris zones the master process's parent is actually the
zsched process and this never has PID == 1. The real init process is not visible
inside the zone at all.

I am attaching a patch against 0.9.3 that (only if NGX_SOLARIS is defined) checks to
see if a root process can send a signal to init and, if not, assumes we are running
in a zone and goes ahead with the binary upgrade. With this patch I am able to do
0-downtime binary upgrades in Solaris zones with no problems. Any other solutions
would also be appreciated.

Kind regards,

Doug Hoyte
_______________________________________________
nginx-devel mailing list
nginx-devel@nginx.org
http://nginx.org/mailman/listinfo/nginx-devel
Subject Author Views Posted

[PATCH] Allow binary upgrades in Solaris zones

Anonymous User 1846 January 05, 2011 02:24PM

Re: [PATCH] Allow binary upgrades in Solaris zones Attachments

Piotr Sikora 679 January 05, 2011 03:16PM

Re: [PATCH] Allow binary upgrades in Solaris zones Attachments

Piotr Sikora 749 January 05, 2011 03:28PM

Re: [PATCH] Allow binary upgrades in Solaris zones

Anonymous User 551 January 06, 2011 11:24AM

Re: [PATCH] Allow binary upgrades in Solaris zones

Piotr Sikora 517 January 06, 2011 07:40PM

Re: [PATCH] Allow binary upgrades in Solaris zones

Maxim Dounin 567 January 05, 2011 06:54PM

Re: [PATCH] Allow binary upgrades in Solaris zones

Anonymous User 573 January 06, 2011 11:46AM

Re: [PATCH] Allow binary upgrades in Solaris zones

Maxim Dounin 642 January 06, 2011 10:00PM



Sorry, you do not have permission to post/reply in this forum.

Online Users

Guests: 113
Record Number of Users: 6 on February 13, 2018
Record Number of Guests: 421 on December 02, 2018
Powered by nginx      Powered by FreeBSD      PHP Powered      Powered by MariaDB      ipv6 ready