Khodor, We had a similar issue when we moved production to a new Ubuntu installation. Credit to D Tim Cummings who came to the rescue with a simple fix. After you complete your installation type the following to use the prefork version sudo a2dismod mpm_event sudo a2enmod mpm_prefork
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If you received this information in error, please contact the sender and delete the message and material from all computers. > On Feb 1, 2023, at 12:20 AM, Khodor Barakat via Webobjects-dev > <webobjects-dev@lists.apple.com> wrote: > > <> > Thanks Michael, > > I will review your link > > is that something new with redhat8/apache? > > I want to check what I have in place for my redhat 7 machines and compare it > with redhat 8 machine , > > but I would expect that apache config was not changed during the migration > > Any other thoughts? > > > From: Michael Kondratov [mailto:mich...@aspireauctions.com] > Sent: Wednesday, February 1, 2023 12:16 AM > To: Khodor Barakat <khod...@portfolioaid.com> > Cc: Webobjects-dev@lists.apple.com > Subject: Re: Having problem with mod_WebObjects.so under redhat 8 > > Please see https://httpd.apache.org/docs/2.4/mod/prefork.html > <https://httpd.apache.org/docs/2.4/mod/prefork.html> > > You are running Worker MPM (multi threaded mode). It is not compatible with > WO Adapter. > > Michael > > > > > On Feb 1, 2023, at 12:13 AM, Khodor Barakat <khod...@portfolioaid.com > <mailto:khod...@portfolioaid.com>> wrote: > > I don’t see that module in my loaded modules nor on the system under > /etc/httpd/modules > > if this is not what you are asking how do I check that ?? > > my problem started after I did in place upgrade from redhat 7 to redhat 8, I > still have some systems running redhat7 and WO setup is working fine > > > httpd -M > Loaded Modules: > core_module (static) > so_module (static) > http_module (static) > access_compat_module (shared) > actions_module (shared) > alias_module (shared) > allowmethods_module (shared) > auth_basic_module (shared) > auth_digest_module (shared) > authn_anon_module (shared) > authn_core_module (shared) > authn_dbd_module (shared) > authn_dbm_module (shared) > authn_file_module (shared) > authn_socache_module (shared) > authz_core_module (shared) > authz_dbd_module (shared) > authz_dbm_module (shared) > authz_groupfile_module (shared) > authz_host_module (shared) > authz_owner_module (shared) > authz_user_module (shared) > autoindex_module (shared) > brotli_module (shared) > cache_module (shared) > cache_disk_module (shared) > cache_socache_module (shared) > data_module (shared) > dbd_module (shared) > deflate_module (shared) > dir_module (shared) > dumpio_module (shared) > echo_module (shared) > env_module (shared) > expires_module (shared) > ext_filter_module (shared) > filter_module (shared) > headers_module (shared) > include_module (shared) > info_module (shared) > log_config_module (shared) > logio_module (shared) > macro_module (shared) > mime_magic_module (shared) > mime_module (shared) > negotiation_module (shared) > remoteip_module (shared) > reqtimeout_module (shared) > request_module (shared) > rewrite_module (shared) > setenvif_module (shared) > slotmem_plain_module (shared) > slotmem_shm_module (shared) > socache_dbm_module (shared) > socache_memcache_module (shared) > socache_shmcb_module (shared) > status_module (shared) > substitute_module (shared) > suexec_module (shared) > unique_id_module (shared) > unixd_module (shared) > userdir_module (shared) > version_module (shared) > vhost_alias_module (shared) > watchdog_module (shared) > dav_module (shared) > dav_fs_module (shared) > dav_lock_module (shared) > lua_module (shared) > mpm_event_module (shared) > proxy_module (shared) > lbmethod_bybusyness_module (shared) > lbmethod_byrequests_module (shared) > lbmethod_bytraffic_module (shared) > lbmethod_heartbeat_module (shared) > proxy_ajp_module (shared) > proxy_balancer_module (shared) > proxy_connect_module (shared) > proxy_express_module (shared) > proxy_fcgi_module (shared) > proxy_fdpass_module (shared) > proxy_ftp_module (shared) > proxy_http_module (shared) > proxy_hcheck_module (shared) > proxy_scgi_module (shared) > proxy_uwsgi_module (shared) > proxy_wstunnel_module (shared) > ssl_module (shared) > systemd_module (shared) > WebObjects_module (shared) > cgid_module (shared) > fcgid_module (shared) > http2_module (shared) > maxminddb_module (shared) > proxy_http2_module (shared) > > > From: Michael Kondratov [mailto:mich...@aspireauctions.com > <mailto:mich...@aspireauctions.com>] > Sent: Wednesday, February 1, 2023 12:09 AM > To: Khodor Barakat <khod...@portfolioaid.com > <mailto:khod...@portfolioaid.com>> > Cc: Webobjects-dev@lists.apple.com <mailto:Webobjects-dev@lists.apple.com> > Subject: Re: Having problem with mod_WebObjects.so under redhat 8 > Importance: High > > Khodor, > > I’ve had apache crashes when it was running in multi threaded > form. Are you using pre-fork module? > > > Michael > > > > > On Feb 1, 2023, at 12:06 AM, Khodor Barakat via Webobjects-dev > <webobjects-dev@lists.apple.com <mailto:webobjects-dev@lists.apple.com>> > wrote: > > I have migrated my system from redhat 7 to redhat 8 > > and I am having a problem with webobjects , after opening a ticket with > redhat support , the support reported a back trace the is causing apache to > hang and throw segmentation fault 11 > > [pid 37869:tid 140365337980352] AH00051: child pid 37874 exit signal > Segmentation fault (11), possible coredump in /var/apache-dump > > redhat support mentioned that the issue is related to WO module > mod_WebObjects.so, did anyone have this issue before , > > > { "signal": 11 > , "executable": "/usr/sbin/httpd" > , "stacktrace": > [ { "crash_thread": true > , "frames": > [ { "address": 140365077741264 > , "build_id": "a77df8e8eef4029a804d7b883776cc12618b3541" > , "build_id_offset": 44752 > , "function_name": "WOShmem_lock" > , "file_name": "/etc/httpd/modules/mod_WebObjects.so" > } > , { "address": 140365077743499 > , "build_id": "a77df8e8eef4029a804d7b883776cc12618b3541" > , "build_id_offset": 46987 > , "function_name": "sha_lock" > , "file_name": "/etc/httpd/modules/mod_WebObjects.so" > } > , { "address": 140365077765643 > , "build_id": "a77df8e8eef4029a804d7b883776cc12618b3541" > , "build_id_offset": 69131 > , "function_name": "ac_findInstance" > , "file_name": "/etc/httpd/modules/mod_WebObjects.so" > } > , { "address": 140365077732822 > , "build_id": "a77df8e8eef4029a804d7b883776cc12618b3541" > , "build_id_offset": 36310 > , "function_name": "tr_handleRequest" > , "file_name": "/etc/httpd/modules/mod_WebObjects.so" > } > , { "address": 140365077783061 > , "build_id": "a77df8e8eef4029a804d7b883776cc12618b3541" > , "build_id_offset": 86549 > , "function_name": "WebObjects_handler" > , "file_name": "/etc/httpd/modules/mod_WebObjects.so" > } > , { "address": 94650830766376 > , "build_id": "4f04e7d6189e2c9aa5c51e159c08329a7b3078e3" > , "build_id_offset": 299304 > , "function_name": "ap_run_handler" > , "file_name": "/usr/sbin/httpd" > } > , { "address": 94650830767846 > , "build_id": "4f04e7d6189e2c9aa5c51e159c08329a7b3078e3" > , "build_id_offset": 300774 > > I am on redhat 8.7 > Apache/2.4.37 (Red Hat Enterprise Linux) > woadaptor : woadaptor-httpd24-6-1.x86_64 > > mod_WebObjects.so: ELF 64-bit LSB shared object, x86-64, version 1 > (SYSV), dynamically linked, > BuildID[sha1]=a77df8e8eef4029a804d7b883776cc12618b3541, with debug_info, not > stripped > > any help is highly appreciated > > Thanks, > > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Webobjects-dev mailing list (Webobjects-dev@lists.apple.com > <mailto:Webobjects-dev@lists.apple.com>) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/webobjects-dev/michael%40aspireauctions.com > > <https://lists.apple.com/mailman/options/webobjects-dev/michael%40aspireauctions.com> > > This email sent to mich...@aspireauctions.com > <mailto:mich...@aspireauctions.com> > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/webobjects-dev/patrick%40xeotech.com > > This email sent to patr...@xeotech.com
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