Nagios Support Forum

Message: A database connection error has been detected, we are attempting to repair the server, if the repair does not resolve the issue, please contact Nagios support.

Run the following from the CLI as root to attempt to repair the DB

/usr/local/nagiosxi/scripts/repair_databases.sh

Tried running this script, no change. Also tried restarting both the database and nagiosxi servers

output from /var/log/httpd/error_log
[Sun Jul 12 14:59:27 2015] [error] [client 10.x.x.x] PHP Warning: pg_pconnect(): Unable to connect to PostgreSQL server: FATAL: connection limit exceeded for non-superusers in /usr/local/nagiosxi/html/db/adodb/drivers/adodb-postgres64.inc.php on line 682, referer: http://nagiosxi.address.com/nagiosxi/
[Sun Jul 12 14:59:27 2015] [error] [client 10.x.x.x] PHP Notice: Undefined variable: result in /usr/local/nagiosxi/html/includes/db.inc.php on line 241, referer: http://nagiosxi.address.com/nagiosxi/

Is postgresql running?
The logs are named by the day, , for example postgresql-Mon.log
Can you please run this command for the most recent log:
And also:
Post the results here in a code block.

Was this ever resolved? I'm actually having the same issue.

I think that is a question that only the original author of the topic can answer.

Have these steps been done?

Box293 wrote:Is postgresql running?

Code: Select all

service postgresql status

The logs are named by the day, , for example postgresql-Mon.log
Can you please run this command for the most recent log:

Code: Select all

tail -n 100 /var/lib/pgsql/data/pg_log/postgresql-Mon.log

And also:

Code: Select all

tail /var/log/messages -n 100

Post the results here in a code block.

# service postgresql status
postmaster (pid 1914) is running...


# tail -n 100 /var/lib/pgsql/data/pg_log/postgresql-Mon.log
FATAL: connection limit exceeded for non-superusers
FATAL: connection limit exceeded for non-superusers
FATAL: connection limit exceeded for non-superusers
FATAL: connection limit exceeded for non-superusers
FATAL: connection limit exceeded for non-superusers
FATAL: connection limit exceeded for non-superusers
FATAL: connection limit exceeded for non-superusers
FATAL: connection limit exceeded for non-superusers

Have you tried increasing the default "max_connections" value of 100 in the "/var/lib/pgsql/data/postgresql.conf", i.e.
and restarting the posgresql?

I did some research on the error message after I posted the results and found I could increase the limit. I have done so only a few minutes ago. I haven't seen any DB Connection errors since but it may be too early to tell.

We'll leave the ticket open. Reach back out if the problem recurs.