Script to gather gRPC metrics from ceph-csi plugins

gather-csi-metrics.sh

#!/bin/bash

# $1 namespace to query
# $2 csi plugin to query
# $3 container in pod to exec commands in
# $4 port to query
function get_metrics()
{
  for pod in $(oc get pod -l app="$2" -n "$1" -o jsonpath="{.items[*].metadata.name}"); do
    echo "Gathering CSI gRPC metrics for pod ($pod) in namespace ($2) into ${pod}-metrics.log"
    podip=$(oc get -n "$1" pod/"$pod" -o jsonpath="{.status.podIP}")
    oc exec -it -n "$1" "$pod" -c "$3" -- curl http://"${podip}":"$4"/metrics > "$pod"-metrics.log
  done
}

# Gather rbd node plugin metrics
container="csi-rbdplugin"
port="9090"
ns="rook-ceph"
csi="csi-rbdplugin"
get_metrics $ns $csi $container $port

# Gather rbd provisioner plugin metrics
ns="rook-ceph"
csi="csi-rbdplugin-provisioner"
get_metrics $ns $csi $container $port

# Gather cephfs node plugin metrics
container="csi-cephfsplugin"
port="9091"
ns="rook-ceph"
csi="csi-cephfsplugin"
get_metrics $ns $csi $container $port

# Gather cephfs provisioner plugin metrics
ns="rook-ceph"
csi="csi-cephfsplugin-provisioner"
get_metrics $ns $csi $container $port