Hi, as mentioned, i suggest to check the environment variables.
You can catch the script output by modifying the monit configuration for apache this way: start program = "/bin/bash -c '/etc/init.d/httpd start > /tmp/apache.out 2>&1'" ... this will save the output and errors to /tmp/apache.out - it should provide more informations about why apache couldn't start via monit in given machine's environment. Martin On Jun 29, 2010, at 2:57 PM, Tong Anh Quan wrote: > Hi Martin, > > The problem is, the next time when Apache reach the threshold, monit cannot > restart it, the monit.log says continously: > > [ICT Jun 29 18:03:57] error : 'apache' process is not running > [ICT Jun 29 18:03:57] info : 'apache' trying to restart > [ICT Jun 29 18:03:57] info : 'apache' start: /etc/init.d/httpd > [ICT Jun 29 18:04:27] error : 'apache' failed to start > > and I... must manually restart Apache. > > Do you have any suggestion? > > On Thu, Jun 24, 2010 at 10:34 PM, Martin Pala <[email protected]> wrote: > If apache is running and pidfile missing, then the problem is in apache or > its start script - not monit. > > I have never get this situation when restart Apache from command line > (service httpd restart). > > > > As mentioned, for example ubuntu sets pidfile in apache.conf this way: > --8<-- > PidFile ${APACHE_PID_FILE} > --8<-- > > The APACHE_PID_FILE environment variable is defined in /etc/apache2/envvars > this way: > --8<-- > export APACHE_PID_FILE=/var/run/apache2.pid > --8<-- > > ... and the variable sourced from envvars file in /etc/init.d/apache2 this > way: > PIDFILE=`. /etc/apache2/envvars ; echo $APACHE_PID_FILE` > > > You mentioned CentOS - it will have probably different apache configuration > hierarchy, but you have the idea where to look. The problem could be > environment variable (as mentioned monit purges environment variables so > unless you use envvars-like file you may have problem) or apache > configuration issue. > > > > On Jun 24, 2010, at 5:10 PM, Tong Anh Quan wrote: > >> On Thu, Jun 24, 2010 at 9:48 PM, Martin Pala <[email protected]> wrote: >> The pidof shows pid of all matching processes - in case of apache there is >> one master httpd process (parent) which spawns number of child processes to >> handle particular requests - if apache is stopping it may take a while >> before they handle all pending requests and stop. >> >> I know, obviously. >> >> >> Since the pidfile doesn't exist i suppose apache is not running on your >> machine and only some child processes remain active (stopping) ... their >> parent pid will be most probably "1" (their original parent exited). You can >> verify apache's status for example using 'apachectl status' and also by >> trying to connect to the http service which should fail. >> >> What a pity, you're wrong. I checked it before posting: >> >> # ps -ef | grep httpd >> root 21422 1 0 12:49 ? 00:00:00 /usr/sbin/httpd >> apache 21424 21422 0 12:49 ? 00:01:29 /usr/sbin/httpd >> apache 21425 21422 0 12:49 ? 00:02:01 /usr/sbin/httpd >> apache 21426 21422 0 12:49 ? 00:01:46 /usr/sbin/httpd >> apache 21427 21422 0 12:49 ? 00:03:33 /usr/sbin/httpd >> apache 21428 21422 0 12:49 ? 00:02:01 /usr/sbin/httpd >> apache 21429 21422 0 12:49 ? 00:01:49 /usr/sbin/httpd >> apache 21431 21422 0 12:49 ? 00:02:45 /usr/sbin/httpd >> apache 21432 21422 0 12:49 ? 00:00:58 /usr/sbin/httpd >> apache 21443 21422 0 12:50 ? 00:02:22 /usr/sbin/httpd >> apache 21444 21422 0 12:50 ? 00:01:32 /usr/sbin/httpd >> apache 21445 21422 0 12:50 ? 00:01:35 /usr/sbin/httpd >> >> and I can connect to my web page normally. >> >> If despite missing pidfile apache is running and serving requests, then you >> have some problem with apache's startup script. >> >> Until now, I have no problem. >> >> >> Note that monit runs the script in "sandbox" and purges environment >> variables when starting the script (for security reasons). If you apache's >> startup depends on some variable, you will need to modify the start script >> to include it (apache usually uses "envvars" file which is should contain >> variables required for apache). >> >> I use the Apache's default config file and it works fine when restart from >> command line. > > > > > > > > -- > To unsubscribe: > http://lists.nongnu.org/mailman/listinfo/monit-general > > > > -- > --- Hạnh phúc là một ly Cafe và nhạc Trịnh --- > -- > To unsubscribe: > http://lists.nongnu.org/mailman/listinfo/monit-general
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