netdata is an open source server monitoring software available at
One problem with this type of server monitoring is if the server go down, your minoring server too went down. If you use solution that you install on a central server like Prometheus, zabbix,icinga or nagios you still able to get notification when one of the server went down.
To install netdata on Linux (works on any linux), run
bash <(curl -Ss https://my-netdata.io/kickstart.sh) all
Once installed, you will be able to access netdata on URL
To stop netdata run:
systemctl stop netdata
To start netdata run:
systemctl start netdata
Set value for SEND_EMAIL to NO
# enable/disable sending emails SEND_EMAIL="YES"
service netdata stop service netdata start