| Server IP : 127.0.0.2 / Your IP : 18.188.119.49 Web Server : Apache/2.4.18 (Ubuntu) System : User : www-data ( ) PHP Version : 7.0.33-0ubuntu0.16.04.16 Disable Function : disk_free_space,disk_total_space,diskfreespace,dl,exec,fpaththru,getmyuid,getmypid,highlight_file,ignore_user_abord,leak,listen,link,opcache_get_configuration,opcache_get_status,passthru,pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,php_uname,phpinfo,posix_ctermid,posix_getcwd,posix_getegid,posix_geteuid,posix_getgid,posix_getgrgid,posix_getgrnam,posix_getgroups,posix_getlogin,posix_getpgid,posix_getpgrp,posix_getpid,posix,_getppid,posix_getpwnam,posix_getpwuid,posix_getrlimit,posix_getsid,posix_getuid,posix_isatty,posix_kill,posix_mkfifo,posix_setegid,posix_seteuid,posix_setgid,posix_setpgid,posix_setsid,posix_setuid,posix_times,posix_ttyname,posix_uname,pclose,popen,proc_open,proc_close,proc_get_status,proc_nice,proc_terminate,shell_exec,source,show_source,system,virtual MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : ON Directory : /usr/share/doc/apache2/ |
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If apache crashes or freezes, it is helpful if you include a backtrace in the
bug report.
In case of a crash, do the following:
1) Install the packages apache2-dbg libapr1-dbg libaprutil1-dbg gdb.
2) Add "CoreDumpDirectory /var/cache/apache2/core" to your apache configuration.
3) Execute as root:
mkdir -p /var/cache/apache2/core
chown www-data: /var/cache/apache2/core
/etc/init.d/apache2 stop
ulimit -c unlimited
/etc/init.d/apache2 start
4) Do whatever it takes to reproduce the crash. There should now be the file
/var/cache/apache2/core .
5) If you use a forking MPM (e.g. mod_prefork), execute:
gdb /usr/sbin/apache2 /var/cache/apache2/core/core
(gdb) bt full
...
(gdb) quit
If you use a threaded mpm (mod_worker, mod_event), execute:
gdb /usr/sbin/apache2 /var/cache/apache2/core/core
(gdb) thread apply all bt full
...
(gdb) quit
Include the backtrace in the bug report.
6) Undo the change to your configuration, uninstall the debug packages, remove
/var/cache/apache2/core
In case of a hanging process, you don't need a core dump and you can skip steps 2 and 3.
4) Reproduce the problem. Get the pid of a hanging process.
5) Start gdb with
gdb -p pid
and continue as described above. It may also be helpful to include the output of
strace -p pid