Hello,
I have a FastCGI script working with Apache2 on one system, but seem to
have missed something while trying to port it over to another system.
On the new system, the browser takes a long time before finally
returning a "503 Service Unavailable" message.
When that happens, the log file shows the following errors (indented
here for readability),
. . .
[Mon Jun 09 08:43:34.566447 2025] [fcgid:warn] [pid
1910852:tid 1910852] [client xx.yy.zz.aa:61458]
mod_fcgid: can't apply process slot for
/var/www/example.org/fcgi/x_test-00.fcgi
[Mon Jun 09 08:43:46.324188 2025] [fcgid:warn] [pid
1910900:tid 1910900] [client xx.yy.zz.aa:52592]
mod_fcgid: can't apply process slot for
/var/www/example.org/fcgi/x_test-00.fcgi
. . .
The script works fine on its own:
$ sudo -u www-data REQUEST_METHOD="GET" \
/var/www/example.org/fcgi/test.fcgi
Content-Type: text/plain
Hello, World! 0
I have the following in the Apache2 vhost for that site:
. . .
ScriptAlias /search/query /var/www/example.org/fcgi/test.fcgi
<Directory /var/www/example.org/fcgi>
Options +ExecCGI
AddHandler fcgid-script .fcgi
Order allow,deny
Allow from all
</Directory>
. . .
I have looked at the following for ideas,
https://httpd.apache.org/mod_fcgid/mod/mod_fcgid.html
I've tried modifying /etc/apache2/mods-available/fcgid.conf to increase
FcgidMaxProcesses and FcgidMaxProcessesPerClass to various large
numbers, and then reloading, but to no effect. That's probably barking
up the wrong tree, however.
What settings have I missed?
/Lars
---
$ /usr/sbin/apache2ctl -v
Server version: Apache/2.4.62 (Debian)
Server built: 2024-10-04T15:21:08
$ /sbin/a2query -m | sort
access_compat (enabled by maintainer script)
alias (enabled by maintainer script)
auth_basic (enabled by maintainer script)
authn_core (enabled by maintainer script)
authn_file (enabled by maintainer script)
authz_core (enabled by maintainer script)
authz_host (enabled by maintainer script)
authz_user (enabled by maintainer script)
autoindex (enabled by maintainer script)
cache (enabled by site administrator)
deflate (enabled by maintainer script)
dir (enabled by maintainer script)
env (enabled by maintainer script)
evasive (enabled by maintainer script)
fcgid (enabled by maintainer script)
filter (enabled by maintainer script)
headers (enabled by site administrator)
include (enabled by site administrator)
mime (enabled by maintainer script)
mpm_prefork (enabled by maintainer script)
negotiation (enabled by maintainer script)
reqtimeout (enabled by maintainer script)
rewrite (enabled by site administrator)
setenvif (enabled by maintainer script)
socache_shmcb (enabled by site administrator)
ssl (enabled by site administrator)
status (enabled by maintainer script)
$ lsb_release -rd
No LSB modules are available.
Description: Debian GNU/Linux 12 (bookworm)
Release: 12
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