Seems like something people might run in to, so I figured I’d share it here.
Recently the daily.sh update script started throwing errors. I didn’t change anything, but still this error was showing:
/opt/librenms$ sudo ./validate.php
====================================
| Component | Version |
|---|---|
| LibreNMS | 1.33-164-gcf58d1583 |
| DB Schema | 217 |
| PHP | 7.1.8-1ubuntu1 |
| MySQL | 10.1.25-MariaDB-1 |
| RRDTool | 1.6.0 |
| SNMP | NET-SNMP 5.7.3 |
====================================
[OK] Database connection successful
[OK] Database schema correct
./daily.sh
Checking PHP version OK
Updating to latest codebase OK
Updating SQL-Schema OK
Updating submodules OK
Cleaning up DB FAIL
Could not connect to memcached (example.net:11211)
Clearing OS cache
Could not connect to memcached (example.net:11211)
Could not connect to memcached (example.net:11211)
Could not connect to memcached (example.net:11211)
Could not connect to memcached (example.net:11211)
Could not connect to memcached (example.net:11211)
Could not connect to memcached (example.net:11211)
Could not connect to memcached (example.net:11211)
Could not connect to memcached (example.net:11211)
Could not connect to memcached (example.net:11211)
Fetching notifications FAIL
Could not connect to memcached (example.net:11211)
Caching PeeringDB data OK
Even though I didn’t have example.net anywhere in the config.php. Memcached service was running:
sudo netstat -tap | grep memcached:
tcp 0 0 localhost:11211 0.0.0.0:* LISTEN 1294/memcached
I am monitoring a server outside my network through distributed polling. It seems that the lines missing from the config.php in regards to the host for memcached in this situation didn’t matter before, but matters now. Adding these lines to the config.php fixed it:
$config['distributed_poller_memcached_host'] = 'localhost';
$config['distributed_poller_memcached_port'] = '11211';
Hopes this helps someone having the same issue I had.