operator: add sub-command rook restart

this commit add sub-command `odf operator rook restart`
to restart the rook operator pod and related docs.

Signed-off-by: subhamkrai <[email protected]>

README.md

@@ -23,6 +23,7 @@ The ODF CLI tool provides configuration and troubleshooting commands for OpenShi
 - `odf operator`:
   - `rook`:
     - `set`: Set the property in the rook-ceph-operator-config configmap.
+    - `restart` : Restart the Rook-Ceph operator
 - `odf help` : Display help text
 
 ## Documentation

cmd/odf/operator/operator.go

@@ -7,9 +7,10 @@ import (
 
 // OperatorCmd represents the rook commands
 var OperatorCmd = &cobra.Command{
-	Use:   "operator",
-	Short: "Calls subcommands specific to various ODF operators",
-	Args:  cobra.ExactArgs(1),
+	Use:    "operator",
+	Short:  "Calls subcommands specific to various ODF operators",
+	Args:   cobra.ExactArgs(1),
+	Hidden: true,
 }
 
 func init() {

cmd/odf/operator/rook/restart.go

@@ -0,0 +1,21 @@
+package rook
+
+import (
+	"github.com/red-hat-storage/odf-cli/cmd/odf/root"
+	"github.com/rook/kubectl-rook-ceph/pkg/k8sutil"
+	"github.com/spf13/cobra"
+)
+
+var restartCmd = &cobra.Command{
+	Use:     "restart",
+	Short:   "Restart rook-ceph-operator pod",
+	Args:    cobra.NoArgs,
+	Example: "odf operator rook restart",
+	PreRun: func(cmd *cobra.Command, args []string) {
+		// verify operator pod is running
+		k8sutil.WaitForPodToRun(cmd.Context(), root.ClientSets.Kube, root.OperatorNamespace, "app=rook-ceph-operator")
+	},
+	Run: func(cmd *cobra.Command, _ []string) {
+		k8sutil.RestartDeployment(cmd.Context(), root.ClientSets.Kube, root.OperatorNamespace, "rook-ceph-operator")
+	},
+}

cmd/odf/operator/rook/rook.go

@@ -13,4 +13,5 @@ var RookCmd = &cobra.Command{
 
 func init() {
 	RookCmd.AddCommand(setCmd)
+	RookCmd.AddCommand(restartCmd)
 }

docs/operator.md

@@ -1,6 +1,11 @@
 # Operator Commands
 
-## Set
+Operator is parent command which requires sub-command. Currently, operator supports these sub-commands:
+
+- `set <property> <value>` : [set](#set) the property in the rook-ceph-operator-config configmap.
+- `restart`: [restart](#restart) the Rook-Ceph operator
+
+## set
 
 Set the property in the rook-ceph-operator-config configmap
 
@@ -9,3 +14,13 @@ $ odf operator rook set ROOK_LOG_LEVEL DEBUG
 
 configmap/rook-ceph-operator-config patched
 ```
+
+## restart
+
+Restart the Rook-Ceph operator.
+
+``` bash
+$ odf operator rook restart
+
+deployment.apps/rook-ceph-operator restarted
+```