According to https://docs.pingcap.com/tidb/stable/deploy-monitoring-services during the deployment of a TiDB cluster using TiUP, the monitoring and alert services are automatically deployed, and no manual deployment is needed.
This seems to be true as well for the Node-Exporter which can be configured in the topology.yml for cluster deployment as described in https://docs.pingcap.com/tidb/stable/tiup-cluster-topology-reference#monitored
Essentially, what can be configured is the port at which the node-exporter exposes its metrics.
On other instances I use the node-exporter as well and use its feature to collect metrics from a local textfile via the --collector.textfile.directory flag. I would like to do the same on the TiDB instances.
What I would like to configure is either
- To add the textfile collector flag with directory to the built-in node-exporter or
- to prevent TiUP from installing or running the node-exporter (in order to install my own node-exporter)
Is this kind of configuration possible? Or is there any other solution?
It seems that the configuration is limited to changing the port at which the node exporter expose its metrics as the following code from TiUP for starting the node-exporter confirms
https://github.com/pingcap/tiup/blob/master/embed/templates/scripts/run_node_exporter.sh.tpl