Dear list,
I have questions about content of the following error messages.
---</var/log/secure>---
dovecot-auth: PAM unable todlopen(/lib/security/pam_nologin.so)
dovecot-auth: PAM [error:/lib/security/pam_nologin.so: cannot open shared
object file: Too many open files]
dovecot-auth: PAM adding faulty module:/lib/security/pam_nologin.so
dovecot-auth: PAM _pam_load_conf_file: unable to open /etc/pam.d/system-auth
dovecot-auth: PAM unable to dlopen(<*unknown module path*>)
dovecot-auth: PAM [error: *unknown module path*>: cannot open shared object
file: Too many open files]
dovecot-auth: PAM adding faulty module: <*unknown module path*>
dovecot-auth: PAM _pam_load_conf_file: unable to open /etc/pam.d/system-auth
dovecot-auth: PAM _pam_load_conf_file: unable to open /etc/pam.d/system-auth
dovecot-auth: PAM unable to dlopen(/lib/security/pam_deny.so)
dovecot-auth: PAM [error:/lib/security/pam_deny.so: cannot open shared object
file: Too many open files]
dovecot-auth: PAM adding faulty module:/lib/security/pam_deny.so
---</var/log/maillog>---
dovecot: auth(default): pam(x...@xxx.com,127.0.0.1): pipe() failed: Too many
open files
dovecot: auth(default): pam(x...@xxx.com,127.0.0.1): pipe() failed: Too many
open files
It seems that this is due to that there are files existed to open beyond
its limitation.
Other information that could be relevant are as follows.
# ulimit -n
1024
# cat /proc/`cat /var/run/dovecot/master.pid`/limits
cat: /proc/7273/limits: No such file or directory
# lsof -p `cat /var/run/dovecot/master.pid` | wc -l
29
# ls /proc/`pidof dovecot-auth`/fd | wc -l
1024
>From the above result, dovecot-auth proccess opened 10243
files, and that seems to be the limit. So I expect that
adding following lines into /etc/init.d/dovecot could be
fix this issue.
# vi /etc/init.d/dovecot
---
. /etc/init.d/functions
ulimit -n 4098 <-add
test -x /usr/sbin/dovecot || exit 0 <-add
if [ -f /etc/sysconfig/dovecot ]; then
. /etc/sysconfig/dovecot
fi
---
Is my understanding right? Even if so, how could I verify
what files are opened by dovecot-auth?
I would very much appreciate it if someone in this list
could provide comments/suggestions.
Sincerely,
