I use Squid with SquidGuard and Windbind or LDAP authentication helpers.. I always just issue 'squid -k reconfigure' which forces Squid and SquidGuard to reload their config files again (including all domain/user/url lists in SquidGuard) it is very fast and results in no noticable disruption of service to end users.
This works fine for me and I have never had a problem doing so in over two years of use. Regards Jay > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Matthew Smith > Sent: Friday, 17 September 2004 12:59 PM > To: [EMAIL PROTECTED] > Subject: SquidGuard and HUP > > > Hello SquidGuard List, > > I'm new to the list and squidguard, so please excuse me if I ask > some newbie > questions... :) > > I am running squid with a number of squidguard subprocesses, and > a number of > auth processes. These auth processes take a large time to reload, > and put the > system under pressure when they do. > > Every now and then I want to make alterations to the > squidguard.conf, or add > or remove a user from a external user list. At the moment I am restarting > squid to get squidguard to reload its configuration. I have since > descovered > that sending squid a HUP using 'kill -HUP' forces squid to reload > it's config > and it's redirector and auth children, but this means that my > auth processes > restart as well. > > I noticed on the squidguard website it mentions: "Currently a squidGuard > process will reincarnate on a HUP signal directly to the > squidGuard process > -- if at all possible (i.e. execvp() and replace itself with a fresh > squidGuard process with the same command line arguments). Thus if > you suspect > a squidGuard process has gone mad, you don't necessarily need to > reconfigure > Squid; a "kill -HUP that_squidGuard_pid" will probably do" > > However, a 'killall -HUP squidGuard' causes my squidguard > processes to die, if > I do it a few more times then squid itself will shutdown. > > I get the following in my squid cache.log: > error execve: 2 > 2004/09/17 14:39:40| WARNING: redirector #4 (FD 31) exited > error execve: 2 > 2004/09/17 14:39:40| WARNING: redirector #5 (FD 32) exited > error execve: 2 > 2004/09/17 14:41:16| WARNING: redirector #1 (FD 11) exited > error execve: 2 > 2004/09/17 14:41:17| WARNING: redirector #2 (FD 26) exited > error execve: 2 > 2004/09/17 14:41:17| WARNING: redirector #3 (FD 27) exited > 2004/09/17 14:41:17| Too few redirector processes are running2004/09/17 > 14:41:17| Starting new helpers > 2004/09/17 14:41:17| helperOpenServers: Starting 5 'squidGuard' processes > > and a bit later (if I send another HUP): > > 2004/09/17 14:43:11| WARNING: redirector #1 (FD 7) exited > error execve: 2 > 2004/09/17 14:43:11| WARNING: redirector #2 (FD 8) exited > error execve: 2 > 2004/09/17 14:43:12| WARNING: redirector #3 (FD 9) exited > 2004/09/17 14:43:12| Too few redirector processes are running2004/09/17 > 14:43:12| storeDirWriteCleanLogs: Starting... > 2004/09/17 14:43:12| WARNING: Closing open FD 6 > 2004/09/17 14:43:12| WARNING: Closing open FD 20 > 2004/09/17 14:43:12| Finished. Wrote 8582 entries. > 2004/09/17 14:43:12| Took 0.0 seconds (2193202.1 entries/sec). > FATAL: The redirector helpers are crashing too rapidly, need help! > > Squid Cache (Version 2.5.STABLE5): Terminated abnormally. > > In my squidguard.log, I get the following: > > 2004-09-17 14:49:52 [19638] got sigHUP reload config > 2004-09-17 14:49:52 [19639] got sigHUP reload config > 2004-09-17 14:49:53 [19640] got sigHUP reload config > 2004-09-17 14:49:53 [19641] got sigHUP reload config > 2004-09-17 14:49:53 [19642] got sigHUP reload config > > But the squidguard processes must be crashing, because squid only > reloads them > when a request comes through (and the redirector fails until they come > online). > > From what I can gather, when the squidgard processes recieve a HUP, they > attempt to reload using execvp(), but crash. Is there a better > way that I can > force a squidguard reload (eg with the -u command line option)? > Or is there a > fix I can apply to squidguard to stop it crashing on a HUP? > > I am using squid-2.5.STABLE5-1 and squidGuard-1.2.0 on a Redhat > Enterprise > Linux server. > > Thanks for any help you can give, > > Matthew Smith > >
