Open Infrastructure

Ah - the time difference should probably better monitored on
monitoring1.place{5,6}, not on monitoring.place11.

monitoring.place11 should be mainly configured as "monitoring us from
outside".

redmine@ungleich.ch writes:

Install ntp

apt install ntp
service ntp start

To enable, ntp collector run the following command on targets only if the file is not all commented out.

cat > /etc/default/prometheus-node-exporter << EOF
ARGS="--collector.ntp --collector.ntp.server ::1"
EOF

service prometheus-node-exporter restart

I think that the prometheus query node_ntp_offset would be the one we needed. For more details, please look https://github.com/prometheus/node_exporter/blob/master/docs/TIME.md.