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Full Discussion: the parent receive SIGTERM from its child (httpd) ?
Top Forums Programming the parent receive SIGTERM from its child (httpd) ? Post 302222584 by aaronwong on Thursday 7th of August 2008 04:25:51 AM
Old 08-07-2008
Yes, it is Apache httpd.
Using "-D FOREGROUND" option is to run httpd as a child process of the process manager in our system, so that it can be monitored by the process manager. If leave out this option, when the process manager fork() and exec() to start httpd, it will became an orphan(which parent process pid is 1 ).
And the process manager is running in background mode, so Ctrl-C could not terminate the process manager and httpd service.
Kill httpd by "kill" command is just to test whether the process manager can be aware of its child process - httpd exiting.

Thanks for your advice, but by "
Quote:
I'm guessing with kill -9 you are not allowing it to run its regular signal handlers, which include sending a SIGTERM to the parent
. ", it is the design of httpd, and we could hardly do nothing to change it, unless there is no other solution.
and by "
Quote:
I'm also guessing this is by design, and that you should be able to find an option which disables this behavior
.", you mean the options to start httpd ?

Thanks !
 

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LEARN ABOUT MOJAVE

apachectl

APACHECTL(8)							     apachectl							      APACHECTL(8)

NAME

       apachectl - Apache HTTP Server Control Interface

SYNOPSIS

       When acting in pass-through mode, apachectl can take all the arguments available for the httpd binary.

       apachectl [ httpd-argument ]

       When acting in SysV init mode, apachectl takes simple, one-word commands, defined below.

       apachectl command

SUMMARY

       apachectl  is  a  front	end  to the Apache HyperText Transfer Protocol (HTTP) server. It is designed to help the administrator control the
       functioning of the Apache httpd daemon.

       The apachectl script can operate in two modes. First, it can act as a simple front-end to the httpd command that simply sets any  necessary
       environment  variables and then invokes httpd, passing through any command line arguments. Second, apachectl can act as a SysV init script,
       taking simple one-word arguments like start, restart, and stop, and translating them into appropriate signals to httpd.

       If your Apache installation uses non-standard paths, you will need to edit the apachectl script to set the appropriate paths to	the  httpd
       binary. You can also specify any necessary httpd command line arguments. See the comments in the script for details.

       The apachectl script returns a 0 exit value on success, and >0 if an error occurs. For more details, view the comments in the script.

OPTIONS

       Only the SysV init-style options are defined here. Other arguments are defined on the httpd manual page.

       start  Loads the org.apache.httpd launchd job.

       stop, graceful-stop
	      Unloads the org.apache.httpd launchd job.

       restart, graceful
	      Unloads, then loads the org.apache.httpd launchd job.

       fullstatus
	      Displays a full status report from mod_status. For this to work, you need to have mod_status enabled on your server and a text-based
	      browser such as lynx available on your system. The URL used to access the status report can be set by editing the STATUSURL variable
	      in the script.

       status Displays	a  brief status report. Similar to the fullstatus option, except that the list of requests currently being served is omit-
	      ted.

       configtest
	      Run a configuration file syntax test. It parses the configuration files and either reports Syntax Ok or detailed	information  about
	      the particular syntax error. This is equivalent to apachectl -t.

       The following option was available in earlier versions but has been removed.

       startssl
	      To  start httpd with SSL support, you should edit your configuration file to include the relevant directives and then use the normal
	      apachectl start.

Apache HTTP Server						    2018-07-06							      APACHECTL(8)
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