Netdata

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Revision as of 18:33, 6 April 2018 by Freephile (talk | contribs)
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Netdata will be part of the QualityBox dashboard.

See http://freephile.qualitybox.us:20000/

System Locations[edit | edit source]

   - the daemon     at /usr/sbin/netdata
   - config files   in /etc/netdata
   - web files      in /usr/share/netdata
   - plugins        in /usr/libexec/netdata
   - cache files    in /var/cache/netdata
   - db files       in /var/lib/netdata
   - log files      in /var/log/netdata
   - pid file       at /var/run/netdata.pid
   - logrotate file at /etc/logrotate.d/netdata

Host Modifications[edit | edit source]

Check KSM (kernel memory deduper)

Memory de-duplication instructions

You have kernel memory de-duper (called Kernel Same-page Merging, or KSM) available, but it is not currently enabled.

To enable it run:

   echo 1 >/sys/kernel/mm/ksm/run
   echo 1000 >/sys/kernel/mm/ksm/sleep_millisecs

If you enable it, you will save 40-60% of netdata memory.


Ports[edit | edit source]

netdata by default listens on all IPs on port 19999. We add a rule to firewalld to allow 20000 and then pass that port through to the backend in haproxy config.

 http://this.machine.ip:20000/ => http://127.0.0.1:19999

Start/Stop[edit | edit source]

To stop netdata run: systemctl stop netdata

To start netdata run: systemctl start netdata