Collectd
is a daemon which collects system performance statistics
periodically and stores them in RRD files. Statistics will be displayed inside a web interface called Collectd Graph Panel (CGP).
After installation, the system will gather following statistics:
- CPU usage
- system load
- number of processes
- RAM memory usage
- virtual memory (swap) usage
- system uptime
- disk space usage
- disk read and write operations
- network interfaces
network latency
For each check, the web interface will display a graph containing last collected value and also minimum, maximum and average values.
CGP is accessible on a random URL generated on first install, something like https://myserver.nethserver.org:980/02bf3f8364beea0d5f23044bf14d31d93f63e98d
. The URL is available from the Server Manager inside the Applications
page. Click the Open
button of Collectd Charts
application.
From the old Server Manager, the web interface can be accessed using the Graphs
section.
The ping
plugin measure the network latency. At regular intervals, it sends a ping to the configured upstream DNS. If the multi WAN module is configured, any enabled provider is also checked.
Additional hosts could be monitored (i.e. a web server) using a comma separated list of hosts inside the PingHosts
property.
Example: :
config setprop collectd PingHosts www.google.com,www.nethserver.org
signal-event nethserver-collectd-update