Re: Checking if MPM is working

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Am 10.07.20 um 12:47 schrieb Mahmood Naderan:
Hi

The output of "apache2 -V" and "apache2 -l" commands show that MPM prefork is not available in my apache web server.

which os? i see ubuntu. but which one?

# apache2 -V
[Fri Jul 10 15:13:36.293467 2020] [core:warn] [pid 25107] AH00111: Config variable ${APACHE_RUN_DIR} is not defined apache2: Syntax error on line 80 of /etc/apache2/apache2.conf: DefaultRuntimeDir must be a valid directory, absolute or relative to ServerRoot

Did you see this syntax error?

Server version: Apache/2.4.29 (Ubuntu)
Server built:   2020-03-13T12:26:16
Server's Module Magic Number: 20120211:68
Server loaded:  APR 1.6.3, APR-UTIL 1.6.1
Compiled using: APR 1.6.3, APR-UTIL 1.6.1
Architecture:   64-bit
Server MPM:
Server compiled with....
  -D APR_HAS_SENDFILE
  -D APR_HAS_MMAP
  -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
  -D APR_USE_SYSVSEM_SERIALIZE
  -D APR_USE_PTHREAD_SERIALIZE
  -D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
  -D APR_HAS_OTHER_CHILD
  -D AP_HAVE_RELIABLE_PIPED_LOGS
  -D DYNAMIC_MODULE_LIMIT=256
  -D HTTPD_ROOT="/etc/apache2"
  -D SUEXEC_BIN="/usr/lib/apache2/suexec"
  -D DEFAULT_PIDLOG="/var/run/apache2.pid"
  -D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
  -D DEFAULT_ERRORLOG="logs/error_log"
  -D AP_TYPES_CONFIG_FILE="mime.types"
  -D SERVER_CONFIG_FILE="apache2.conf"
# apache2 -l
Compiled in modules:
   core.c
   mod_so.c
   mod_watchdog.c
   http_core.c
   mod_log_config.c
   mod_logio.c
   mod_version.c
   mod_unixd.c



However, if I change the value of MaxRequestWorkers in mod-enabled/mpm_prefork.conf and restart the web server, I can verify that the number of dots in /server-status changes.


So, am I using prefork or not? Any idea?

look in the mods-enabled directory. there should a file containing mpm in the name.


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