Hi All,
I recently got LibreNMS up and running on my Centos 7 system (Apache)- all was running fine.
I made the move to using rrdcached, with the plan to use a couple of distributed pollers in the future, and ever since doing this, I now have the following issues:
- Graphs will no longer draw
- Certain pages will not load at all (for example the device list - the main page loads, and where the list loads it just says “Loading…”
- Every page load requires the user to re-authenticate
- Some pages cannot be viewed at all (just keeps looping back to a login screen) - for example /ports/
I have tried reverting the changes I made, but the issues persist.
This is the relevant parts of config.php:
# rrdtool stuff
$config['rrdtool_version'] = '1.6.0';
$config['rrdcached'] = "localhost:42217";
## Poller
$config['distributed_poller_group'] = '0';
$config['distributed_poller_memcached_host'] = "localhost";
$config['distributed_poller_memcached_port'] = 11211;
$config['distributed_poller'] = true;
$config['update'] = 0;
This is the contents of /etc/systemd/system/rrdcached.service:
[Unit]
Description=Data caching daemon for rrdtool
After=network.service
[Service]
Type=forking
PIDFile=/run/rrdcached.pid
ExecStart=/usr/sbin/rrdcached -w 1800 -z 1800 -f 3600 -s librenms -U
librenms -G librenms -B -R -j /var/tmp -l 0.0.0.0:42217 -t 4 -F -b /opt/librenms/rrd/
[Install]
WantedBy=default.target
This is the contents of cat /etc/sysconfig/memcached:
PORT="11211"
USER="memcached"
MAXCONN="1024"
CACHESIZE="64"
OPTIONS="-l 0.0.0.0 -P /var/run/memcached.pid"
Both memcached and rrdcachedd are running:
[root@globlibrenms01 librenms]# pgrep -a memca
1046 /usr/bin/memcached -u memcached -p 11211 -m 64 -c 1024 -l 0.0.0.0 -P /var/run/memcached.pid
[root@globlibrenms01 librenms]# pgrep -a rrd
1481 /usr/sbin/rrdcached -w 1800 -z 1800 -f 3600 -s librenms -U librenms -G librenms -B -R -j /var/tmp -l 0.0.0.0:42217 -t 4 -F -b /opt/librenms/rrd
and listening on their correct ports:
[root@globlibrenms01 librenms]# netstat -an | grep 11211
tcp 0 0 0.0.0.0:11211 0.0.0.0:* LISTEN
udp 0 0 0.0.0.0:11211 0.0.0.0:*
[root@globlibrenms01 librenms]# netstat -an | grep 42217
tcp 0 0 0.0.0.0:42217 0.0.0.0:* LISTEN
This is the output of validate.php:
[root@globlibrenms01 librenms]# ./validate.php
====================================
Component | Version
--------- | -------
LibreNMS | 1.41-36-g67c585b
DB Schema | 254
PHP | 7.2.6
MySQL | 5.5.56-MariaDB
RRDTool | 1.6.0
SNMP | NET-SNMP 5.7.2
====================================
[OK] Composer Version: 1.6.5
[OK] Dependencies up-to-date.
[OK] Database connection successful
[OK] Database schema correct
[FAIL] Discovery has not completed in the last 24 hours.
[FIX] Check the cron job to make sure it is running and using discovery-wrapper.py
[WARN] IPv6 is disabled on your server, you will not be able to add IPv6 devices.
[root@globlibrenms01 librenms]# ./validate.php -g distributedpoller
====================================
Component | Version
--------- | -------
LibreNMS | 1.41-36-g67c585b
DB Schema | 254
PHP | 7.2.6
MySQL | 5.5.56-MariaDB
RRDTool | 1.6.0
SNMP | NET-SNMP 5.7.2
====================================
[OK] Composer Version: 1.6.5
[OK] Dependencies up-to-date.
Checking distributedpoller: OK
[OK] Connection to memcached is ok
[root@globlibrenms01 librenms]# ./validate.php -g rrdcheck
====================================
Component | Version
--------- | -------
LibreNMS | 1.41-36-g67c585b
DB Schema | 254
PHP | 7.2.6
MySQL | 5.5.56-MariaDB
RRDTool | 1.6.0
SNMP | NET-SNMP 5.7.2
====================================
[OK] Composer Version: 1.6.5
[OK] Dependencies up-to-date.
Checking rrdcheck:
Scanning 43354 rrd files in /opt/librenms/rrd...
Status: 43354/43354 - Complete
OK
Any help is appreciated 
