Tracking the network latency of the servers’ network is not an easy job. Most monitoring software is capable to monitor the state of the server, but how to monitor the state of the connectivity and the network latency and even the Internet connectivity with some respectful addresses like 220.127.116.11 or 18.104.22.168? It should be easy to do it with ICMP and ping command but using the collectd daemon and one of its plugins offers collectd-ping from https://collectd.org/wiki/index.php/Plugin:Ping to save all the history in a time series back-end and using grafana – https://grafana.com/ (or other graphs/histograms and etc software) to make graphs.
Using the collectd-ping plugin in conjunction with grafana may reach the similar effect as using the old and gold smokeping.
CentOS 7 included the collectd-ping plugin in its official repository, but in CentOS 8 the plugin is missing! Under Cent OS 8 the CentOS SIG OpsTools https://wiki.centos.org/SpecialInterestGroup/OpsTools includes the collectd-ping plugin in their repository. More on SIG and OpsTools may be obtained in the later page. In general, it is safe to use this repository it would not break user’s system.
Here is how to install and configure it. Real grafana examples are also included at the end.
The example here assumes there is a grafana server installed with influxdb backend.
STEP 1) Add OpsTools repository and install the collectd and collectd-ping.
The OpsTools repository is installed with centos-release-opstools package.
Here is what is going to install:
dnf install -y centos-release-opstools dnf install -y collectd collectd-ping