Class: Chef::Knife::ClusterKick

Inherits:
ClusterSsh show all
Defined in:
lib/chef/knife/cluster_kick.rb

Overview

Based on gist.github.com/1325982 by Ash Berlin

"Since chef v0.10 you can send USR1 to the chef-client process and it
will wake up and do a run. But the usual case when I want to do a run
is cos I'm either testing a cookbook change or I want to deploy now. I
could just run sudo chef-client but then that will only log to std
out.  Just run this script, it will send chef-client a USR1 signal and
then tail the log file (but nicely so that you'll get your terminal
back when the run completes)."

Constant Summary

KICKSTART_SCRIPT =
<<EOF
#!/bin/bash
set -e
sudo -p 'knife sudo password: ' true

<%= ((config[:verbosity].to_i > 1) ? "set -v" : "") %>

# New style server, using chef-client-nonce
if [ -f /etc/init.d/chef-client-nonce ]; then
  echo -e "****\n\nstarting chef-client-nonce service\n\n****\n"
  sudo -p 'knife sudo password: ' service chef-client-nonce start
# Old style server, using long-running chef-client
elif [ -f /etc/init.d/chef-client ]; then
  if sudo  -p 'knife sudo password: ' service chef-client status ; then

    # running
    pid_file="<%= config[:pid_file] %>"
    log_file=<%= config[:log_file] %>

    declare tail_pid

    on_exit() {
      rm -f $pipe
    }

    trap "on_exit" EXIT ERR

    pipe=/tmp/pipe-$$
    mkfifo $pipe

    tail -Fn0 "$log_file" > $pipe &

    tail_pid=$!

    pid="$(sudo -p 'knife sudo password: ' cat $pid_file)"
    sudo -p 'knife sudo password: ' kill -USR1 "$pid"
    GOOD_RESULT='INFO: Report handlers complete\$'
    BAD_RESULT='ERROR: Sleeping for [0-9]+ seconds before trying again\$'
    sed -r -e "/$GOOD_RESULT/{q 0}" -e"/$BAD_RESULT/{q 1}" $pipe
  else
    echo -e "****\n\nchef-client daemon not running, invoking chef-client directly\n\n****\n"
    sudo -p 'knife sudo password: ' chef-client
  fi
else
  echo -e "****\n\nNo chef-client found!\n\n****\n"
  exit 1
fi
EOF

Instance Attribute Summary

Attributes included from Ironfan::KnifeCommon

#broker, #problems

Instance Method Summary collapse

Methods inherited from ClusterSsh

#_run, #configure_session, #cssh, #print_data, #ssh_command

Methods included from Ironfan::KnifeCommon

#all_computers, #bootstrapper, #configure_dry_run, #confirm_execution, #confirm_or_exit, #die, #discover_computers, #display, #exit_if_unhealthy!, #gemfile, #get_relevant_slice, #get_slice, #has_problem, #healthy?, included, load_deps, #load_ironfan, #pick_apart, #predicate_str, #progressbar_for_threads, #relevant?, #run_bootstrap, #section, #sub_command, #wait_for_ssh

Instance Method Details

#runObject



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# File 'lib/chef/knife/cluster_kick.rb', line 48

def run
  @name_args = [ @name_args.join('-') ]
  config[:display_target] = true
  script = Erubis::Eruby.new(KICKSTART_SCRIPT).result(:config => config)
  @name_args[1] = script
  super
end