fix resync to find peers by deployment ID instead of site names (#4884)

The site names may vary if configured on UI. The Deployment ID
is immutable and can be used instead in replicate resync commands.

cmd/admin-replicate-resync-cancel.go

@@ -92,9 +92,14 @@ func mainAdminReplicateResyncCancel(ctx *cli.Context) error {
 	fatalIf(err, "Unable to initialize admin connection.")
 	info, e := client.SiteReplicationInfo(globalContext)
 	fatalIf(probe.NewError(e), "Unable to fetch site replication info.")
+
+	peerClient := getClient(args.Get(1))
+	peerAdmInfo, e := peerClient.ServerInfo(globalContext)
+	fatalIf(probe.NewError(e), "Unable to fetch server info of the peer.")
+
 	var peer madmin.PeerInfo
 	for _, site := range info.Sites {
-		if args[1] == site.Name {
+		if peerAdmInfo.DeploymentID == site.DeploymentID {
 			peer = site
 		}
 	}

cmd/admin-replicate-resync-start.go

@@ -87,15 +87,20 @@ func mainAdminReplicateResyncStart(ctx *cli.Context) error {
 
 	// Get the alias parameter from cli
 	args := ctx.Args()
-	aliasedURL := args.Get(0)
+
 	// Create a new MinIO Admin Client
-	client, err := newAdminClient(aliasedURL)
+	client, err := newAdminClient(args.Get(0))
 	fatalIf(err, "Unable to initialize admin connection.")
 	info, e := client.SiteReplicationInfo(globalContext)
 	fatalIf(probe.NewError(e), "Unable to fetch site replication info.")
+
+	peerClient := getClient(args.Get(1))
+	peerAdmInfo, e := peerClient.ServerInfo(globalContext)
+	fatalIf(probe.NewError(e), "Unable to fetch server info of the peer.")
+
 	var peer madmin.PeerInfo
 	for _, site := range info.Sites {
-		if args[1] == site.Name {
+		if peerAdmInfo.DeploymentID == site.DeploymentID {
 			peer = site
 		}
 	}

cmd/admin-replicate-resync-status.go

@@ -86,9 +86,14 @@ func mainAdminReplicationResyncStatus(ctx *cli.Context) error {
 		console.Colorize("ResyncMessage", "SiteReplication is not enabled")
 		return nil
 	}
+
+	peerClient := getClient(args.Get(1))
+	peerAdmInfo, e := peerClient.ServerInfo(globalContext)
+	fatalIf(probe.NewError(e), "Unable to fetch server info of the peer.")
+
 	var peer madmin.PeerInfo
 	for _, site := range info.Sites {
-		if args[1] == site.Name {
+		if peerAdmInfo.DeploymentID == site.DeploymentID {
 			peer = site
 		}
 	}