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CentOS 7 Problems / Netdata endless torrent of warning emails

« on: April 30, 2019, 04:37:15 PM »

Following recent CWP updates, netdata service was installed. Since then, I've been getting an endless torrent of warning messages about just about every other service plus RAM usage on my server. Messages suggest the server is constantly over loaded. But I run a couple of small, low traffic wordpress sites on a Linode, with 2GB RAM and plenty of disk space remaining so I'm thinking it really shouldn't be suffering from a lack of resources.. So then what's going on here? I'm running CWPpro version: 0.9.8.807 on Centos 7

Has CWP messed up the server or Netdata configuration? Why am I suddenly faced with this problem?

Example netdata messages:

system.swapio
CHART
30min ram swapped out = 31.9% of RAM
the amount of memory swapped in the last 30 minutes, as a percentage of the system RAM
ALARM
swap
FAMILY
CRITICAL
SEVERITY
Fri Apr 26 03:25:47 BST 2019
TIME
$this > (($status == $CRITICAL) ? (20) : (30))
EVALUATED EXPRESSION
[ $this = 31.8681956 ] [ $status = 1 ] [ $CRITICAL = 4 ]
EXPRESSION VARIABLES
The host has 1 WARNING and 2 CRITICAL alarm(s) raised.

ipv4.udperrors
CHART
ipv4 udperrors last collected secs = 00:00:08 ago
number of seconds since the last successful data collection
ALARM
udp
FAMILY
WARNING
SEVERITY
Thu Apr 25 17:00:09 BST 2019
TIME
$this > (($status >= $WARNING) ? ($update_every) : ( 5 * $update_every))
EVALUATED EXPRESSION
[ $this = 8 ] [ $status = 1 ] [ $WARNING = 3 ] [ ${update_every} = 1 ]
EXPRESSION VARIABLES
The host has 10 WARNING and 0 CRITICAL alarm(s) raised.

apache_local.requests
CHART
apache last collected secs (was warning for 10 seconds)
number of seconds since the last successful data collection
ALARM
requests
FAMILY
Recovered from WARNING
SEVERITY
Thu Apr 25 17:00:19 BST 2019
(was warning for 10 seconds)
TIME
$this > (($status >= $WARNING) ? ($update_every) : ( 5 * $update_every))
EVALUATED EXPRESSION
[ $this = 0 ] [ $status = 1 ] [ $WARNING = 3 ] [ ${update_every} = 1 ]
EXPRESSION VARIABLES
The host has 3 WARNING and 0 CRITICAL alarm(s) raised.

Attaching here some screen shots of netdata graphs from my server. httpd, python.d.plugin, email and sql are showing the highest usage or trigger events. But maybe that's the result of Netdata itself running? My server is configured with Spamhause blacklist check, CSF firewall, Maldet and RKhunter scanners and various other security measures. All checked today and no security breaches found and no entries on any blacklists. So.. again, 1 core, 2GB Ram server running a few low traffic (visits per month in the hundreds) wordpress sites. Why would the server be at all taxed? What's going on here? Any tips would be appreciated.

https://drive.google.com/file/d/1kBvfCXmfnfBIB7PxKWD_0WhBk998-Yki/view?usp=sharing
https://drive.google.com/file/d/1js5pbHcT7nIkVepWa8gq9WKHeC8cqe30/view?usp=sharing
https://drive.google.com/file/d/1nC6_rSrH_WIDv4SnOOMttCajVyB9721F/view?usp=sharing
https://drive.google.com/file/d/1IlRoKsxUuFyFu7YRtbZSs3cSI_cnUKve/view?usp=sharing