Upgrading from apache 2.4.20 to 23 or 25. Even when the services are idle, only receiving a healthcheck request every 2 seconds from a loadbalancer, the server reports it is initializing a new worker every half hour to 45 minutes for about 2 days and the number of apache processes slowly creeps up until it hits one of the ulimits Error Log output AH00925: initializing worker https://<server>/ shared [Sat Dec 24 21:05:58.371791 2016] [proxy:debug] [pid 33423390:tid 1] proxy_util.c(1821): AH00927: initializing worker https://t<server>/ local [Sat Dec 24 21:05:58.371859 2016] [proxy:debug] [pid 33423390:tid 1] proxy_util.c(1856): AH00930: initialized pool in child 33423390 for <server> [mpm_worker:error] [pid 19398908:tid 1] (11)Resource temporarily unavailable: AH00283: fork: Unable to fork new process OS AIX 6.1SP9 Compile parameters export LIBPATH="/opt/freeware/lib:/usr/lib:/usr/openssl_101s_64/lib:/usr/local/lib:/usr/local/pcre_64/lib" export LDFLAGS="-L/opt/freeware/lib -L/usr/openssl_101s_64/lib -L/usr/local/pcre_64/lib -Wl,-bbigtoc" export CC="gcc" export CFLAGS="-maix64 -O2 -pthread" export OBJECT_MODE=64 ./configure --prefix=%{prefix} \ --enable-so \ --enable-static-support \ --enable-deflate \ --enable-mods-static='few ratelimit include sed mime log_debug headers setenvif watchdog proxy proxy_connect proxy_http proxy_ftp proxy_ajp proxy_balancer session session_cookie vhost_alias alias rewrite slotmem_shm socache_dbm' \ --with-included-apr \ --with-included-apr-util \ --with-z=/usr/local/zlib_64 \ --enable-nonportable-atomics=yes \ --with-libxml2=/usr/local/lib \ --enable-ssl \ --enable-ssl-staticlib-deps \ --with-ssl=/usr/openssl_101s_64 \ --with-pcre=/usr/local/pcre_64
what mpm config do you have?
(In reply to Eric Covener from comment #1) > what mpm config do you have? Good point, should have included that, although it's not changed from 2.20 Timeout 300 KeepAlive On MaxKeepAliveRequests 600 KeepAliveTimeout 5 UseCanonicalName Off HostnameLookups Off ThreadsPerChild 25 StartServers 10 MinSpareThreads 250 MaxSpareThreads 300 ServerLimit 25 MaxClients 50 ListenBacklog 100 MaxRequestsPerChild 1000 and the compile details are Server version: Apache/2.4.25 (Unix) Server built: Dec 22 2016 10:37:12 Server's Module Magic Number: 20120211:67 Server loaded: APR 1.5.2, APR-UTIL 1.5.4 Compiled using: APR 1.5.2, APR-UTIL 1.5.4 Architecture: 64-bit Server MPM: worker threaded: yes (fixed thread count) forked: yes (variable process count) Compiled in modules: core.c mod_authn_file.c mod_authn_core.c mod_authz_host.c mod_authz_groupfile.c mod_authz_user.c mod_authz_core.c mod_access_compat.c mod_auth_basic.c mod_socache_dbm.c mod_so.c mod_watchdog.c mod_ratelimit.c mod_reqtimeout.c mod_include.c mod_filter.c mod_sed.c mod_deflate.c http_core.c mod_mime.c mod_log_config.c mod_log_debug.c mod_env.c mod_headers.c mod_setenvif.c mod_version.c mod_proxy.c mod_proxy_connect.c mod_proxy_ftp.c mod_proxy_http.c mod_proxy_fcgi.c mod_proxy_scgi.c mod_proxy_fdpass.c mod_proxy_wstunnel.c mod_proxy_ajp.c mod_proxy_balancer.c mod_proxy_express.c mod_proxy_hcheck.c mod_session.c mod_session_cookie.c mod_session_dbd.c mod_slotmem_shm.c mod_ssl.c mod_lbmethod_byrequests.c mod_lbmethod_bytraffic.c mod_lbmethod_bybusyness.c mod_lbmethod_heartbeat.c worker.c mod_unixd.c mod_status.c mod_autoindex.c mod_vhost_alias.c mod_dir.c mod_alias.c mod_rewrite.c