我正在寻找为我的基础架构执行定期滚动升级的最佳方式。
通常情况下，这涉及到每个主机上一次一个这样做：
sudo yum update -y && sudo reboot 但是，我正在达到这个可扩展性的极限。
我只想在每个angular色中一次重新引导一个节点，这样，我就不会同时closures所有负载均衡器或数据库集群成员。
理想情况下，我想要做一些事情：
for role in $(< roles_list.txt) ; do mco package update_all_and_reboot \ --batch 1 --batch-sleep 90 \ -C $role -F environment=test done
但是，这似乎并不存在。 我不确定使用“shell”代理是否是最好的方法？
mco shell run 'yum update -y && reboot' \ --batch 1 --batch-sleep 90
不过，我只是在看这个工作的错误工具吗？ 有什么更好的办法来pipe理这种types的滚动重启，但我可以以某种方式与我的木偶指派的angular色联系起来，这样我就可以放心，我没有一次性取下任何重要的东西，但我仍然可以做一些并行更新和重新启动？
组态
部署
cd /usr/share/ruby/vendor_ruby/mcollective/application wget https://raw.githubusercontent.com/arnobroekhof/mcollective-plugin-power/master/application/power.rb
和
cd /usr/libexec/mcollective/mcollective/agent wget https://raw.githubusercontent.com/arnobroekhof/mcollective-plugin-power/master/agent/power.ddl wget https://raw.githubusercontent.com/arnobroekhof/mcollective-plugin-power/master/agent/power.rb
在两台主机上，即test-server1和test-server2 。
服务
在这两个服务上重新启动mcollective：
[vagrant@test-server1 ~]# sudo service mcollective restart
和
[vagrant@test-server2 ~]# sudo service mcollective restart
命令
在mcollective服务器节点上运行以下命令：
主机test-server2正在监听：
[vagrant@test-server1 ~]$ mco ping test-server2 time=25.32 ms test-server1 time=62.51 ms ---- ping statistics ---- 2 replies max: 62.51 min: 25.32 avg: 43.91
重新启动test-server2 ：
[vagrant@test-server1 ~]$ mco power reboot -I test-server2 * [ ============================================================> ] 1 / 1 test-server2 Reboot initiated Finished processing 1 / 1 hosts in 123.94 ms
test-server2正在重新引导：
[vagrant@test-server1 ~]$ mco ping test-server1 time=13.87 ms ---- ping statistics ---- 1 replies max: 13.87 min: 13.87 avg: 13.87
它已经重新启动：
[vagrant@test-server1 ~]$ mco ping test-server1 time=22.88 ms test-server2 time=54.27 ms ---- ping statistics ---- 2 replies max: 54.27 min: 22.88 avg: 38.57
请注意，也可以closures主机：
[vagrant@test-server1 ~]$ mco power shutdown -I test-server2 * [ ============================================================> ] 1 / 1 test-server2 Shutdown initiated Finished processing 1 / 1 hosts in 213.18 ms
原始代码
/usr/libexec/mcollective/mcollective/agent/power.rb
module MCollective module Agent class Power<RPC::Agent action "shutdown" do out = "" run("/sbin/shutdown -h now", :stdout => out, :chomp => true ) reply[:output] = "Shutdown initiated" end action "reboot" do out = "" run("/sbin/shutdown -r now", :stdout => out, :chomp => true ) reply[:output] = "Reboot initiated" end end end end # vi:tabstop=2:expandtab:ai:filetype=ruby
/usr/libexec/mcollective/mcollective/agent/power.ddl
metadata :name => "power", :description => "An agent that can shutdown or reboot them system", :author => "A.Broekhof", :license => "Apache 2", :version => "2.1", :url => "http://github.com/arnobroekhof/mcollective-plugins/wiki", :timeout => 5 action "reboot", :description => "Reboots the system" do display :always output :output, :description => "Reboot the system", :display_as => "Power" end action "shutdown", :description => "Shutdown the system" do display :always output :output, :description => "Shutdown the system", :display_as => "Power" end
/usr/share/ruby/vendor_ruby/mcollective/application/power.rb
class MCollective::Application::Power<MCollective::Application description "Linux Power broker" usage "power [reboot|shutdown]" def post_option_parser(configuration) if ARGV.size == 1 configuration[:command] = ARGV.shift end end def validate_configuration(configuration) raise "Command should be one of reboot or shutdown" unless configuration[:command] =~ /^shutdown|reboot$/ end def main mc = rpcclient("power") mc.discover :verbose => true mc.send(configuration[:command]).each do |node| case configuration[:command] when "reboot" printf("%-40s %s\n", node[:sender], node[:data][:output]) when "shutdown" printf("%-40s %s\n", node[:sender], node[:data][:output]) end end printrpcstats mc.disconnect end end # vi:tabstop=2:expandtab:ai
修改后的代码
/usr/libexec/mcollective/mcollective/agent/power.ddl
metadata :name => "power", :description => "An agent that can shutdown or reboot them system", :author => "A.Broekhof", :license => "Apache 2", :version => "2.1", :url => "http://github.com/arnobroekhof/mcollective-plugins/wiki", :timeout => 5 action "update-and-reboot", :description => "Reboots the system" do display :always output :output, :description => "Reboot the system", :display_as => "Power" end
/usr/libexec/mcollective/mcollective/agent/power.rb
module MCollective module Agent class Power<RPC::Agent action "update-and-reboot" do out = "" run("yum update -y && /sbin/shutdown -r now", :stdout => out, :chomp => true ) reply[:output] = "Reboot initiated" end end end end # vi:tabstop=2:expandtab:ai:filetype=ruby
命令
[vagrant@test-server1 ~]$ mco power update-and-reboot -I test-server2 * [ ============================================================> ] 1 / 1 Finished processing 1 / 1 hosts in 1001.22 ms