title: How to solve the error "No Protocol specified" for ClusterSSH
body: <p>I'm trying to setup ClusterSSH on my OpenSuse 15.1 - yet I'm getting an error and I've looked around and cannot find a solution.</p>
  
  <pre><code>mschumacher@Desktop:~/.clusterssh&gt; cssh -l mschumacher 10.0.96.26
  Connection to server failed -- (version 11.0)
  No protocol specified
   at /usr/lib/perl5/vendor_perl/5.26.1/App/ClusterSSH.pm line 1983.
  </code></pre>
  
  <p>In the file /home/mschumacher/.clusterssh/config I have..</p>
  
  <pre><code>#auto_close=5
  #auto_quit=yes
  #command=
  #comms=ssh
  #console=console
  #console_args=
  #console_position=
  #debug=0
  #external_cluster_command=
  #extra_cluster_file=
  #extra_tag_file=
  #history_height=10
  #history_width=40
  #key_addhost=Control-Shift-plus
  #key_clientname=Alt-n
  #key_history=Alt-h
  #key_localname=Alt-l
  #key_macros_enable=Alt-p
  #key_paste=Control-v
  #key_quit=Alt-q
  #key_retilehosts=Alt-r
  #key_username=Alt-u
  #lang=en
  #macro_hostname=%h
  #macro_newline=%n
  #macro_servername=%s
  #macro_username=%u
  #macro_version=%v
  #macros_enabled=yes
  #max_addhost_menu_cluster_items=6
  #max_host_menu_items=30
  #menu_host_autotearoff=0
  #menu_send_autotearoff=0
  #mouse_paste=Button-2
  #rsh=rsh
  #rsh_args=
  #screen_reserve_bottom=60
  #screen_reserve_left=0
  #screen_reserve_right=0
  #screen_reserve_top=0
  #send_menu_xml_file=/home/mschumacher/.clusterssh/send_menu
  #sftp=sftp
  #sftp_args=
  #show_history=0
  ssh=/usr/bin/ssh
  #ssh_args=
  #telnet=telnet
  #telnet_args=
  #terminal=xterm
  #terminal_allow_send_events=-xrm '*.VT100.allowSendEvents:true'
  #terminal_args=
  #terminal_bg_style=dark
  #terminal_colorize=1
  #terminal_decoration_height=10
  #terminal_decoration_width=8
  #terminal_font=6x13
  #terminal_reserve_bottom=0
  #terminal_reserve_left=5
  #terminal_reserve_right=0
  #terminal_reserve_top=5
  #terminal_size=80x24
  #terminal_title_opt=-T
  #title=CSSH
  #unmap_on_redraw=no
  #use_all_a_records=0
  #use_hotkeys=yes
  #use_natural_sort=0
  #window_tiling=yes
  #window_tiling_direction=right
  user=mschumacher
  </code></pre>
  
  <p>I'll keep digging around to see if I can figure out what the issue(s) are, but hopefully, it will be something simple to do.</p>