Add connect timeout option to nodeshell

confluent_client/bin/nodeshell

@@ -53,6 +53,8 @@ def run():
                          help='Specify a custom port for ssh')
     argparser.add_option('-s', '--substitutename',
                          help='Use a different name other than the nodename for ssh')
+    argparser.add_option('-t', '--timeout', type='int', default=0,
+                         help='Timeout in seconds for each node ssh connection')
     argparser.add_option('-x', '--noexpression', action='store_true',
                          help='Suppress expression expansion of command')
     argparser.add_option('-m', '--maxnodes', type='int',
@@ -119,6 +121,8 @@ def run():
             cmdv += ['-p', '{0}'.format(options.port)]
         if options.loginname:
             cmdv += ['-l', options.loginname]
+        if options.timeout:
+            cmdv += ['-o', 'ConnectTimeout={0}'.format(options.timeout)]
         cmdv += [sshnode, cmd]
         if currprocs < concurrentprocs:
             currprocs += 1

confluent_client/doc/man/nodeshell.ronn

@@ -34,9 +34,12 @@ as stderr, unlike psh which combines all stdout and stderr into stdout.
   Specify a substitution name instead of the nodename.  If no {} are in the substitution,
   it is considered to be an append.  For example, '-s -ib' would produce 'node1-ib' from 'node1'.
   Full expression syntax is supported, in which case the substitution is considered to be the entire
-  new name. {node}-ib would be equivalent to -ib.  For example, nodeshell -s {bmc} node1 
+  new name. {node}-ib would be equivalent to -ib.  For example, nodeshell -s {bmc} node1
   would ssh to the BMC instead of the node.
 
+* `-t TIMEOUT`, `--timeout=TIMEOUT`
+  Timeout in seconds for each node ssh connection attempt
+
 ## EXAMPLES
 
 * Running `echo hi` on for nodes: