厨师：延迟服务通知
这是我的mongodb食谱食谱：
node.default['mongodb3']['version'] = '3.4.2'
node.default['mongodb3']['repo'] = 'https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.4/x86_64/'
node.default['mongodb3']['config']['mongod']['net']['port'] = 30158
node.default['mongodb3']['config']['mongod']['net']['bindIp'] = 'localhost'
node.default['mongodb3']['config']['mongod']['security']['authorization'] = 'enabled'
include_recipe 'mongodb3::default'
cookbook_file "/tmp/setupUsers.js" do
source "mongo/setupUsers.js"
mode 0755
end
execute "Add Mongo Users" do
command "mongo localhost:30158 /tmp/setupUsers.js"
end
如你看到的：
mongo localhost:30158 /tmp/setupUsers.js 。 不过，我收到了厨师的这个消息：
==> default: * execute[Add Mongo Users] action run
==> default:
==> default: [execute] MongoDB shell version v3.4.2
==> default: connecting to: localhost:30158
==> default: 2017-03-06T10:56:56.875+0000 W NETWORK [thread1] Failed to connect to 127.0.0.1:30158, in(checking socket
for error after poll), reason: Connection refused
==> default: 2017-03-06T10:56:56.879+0000 E QUERY [thread1] Error: couldn't connect to server localhost:30158, connec
tion attempt failed :
==> default: connect@src/mongo/shell/mongo.js:237:13
==> default: @(connect):1:6
==> default: exception: connect failed
==> default:
==> default: ================================================================================
==> default: Error executing action `run` on resource 'execute[Add Mongo Users]'
==> default: ================================================================================
==> default:
==> default: Mixlib::ShellOut::ShellCommandFailed
==> default: ------------------------------------
==> default: Expected process to exit with [0], but received '1'
==> default: ---- Begin output of mongo localhost:30158 /tmp/setupUsers.js ----
==> default: STDOUT: MongoDB shell version v3.4.2
==> default: connecting to: localhost:30158
==> default: 2017-03-06T10:56:56.875+0000 W NETWORK [thread1] Failed to connect to 127.0.0.1:30158, in(checking socket for error
after poll), reason: Connection refused
==> default: 2017-03-06T10:56:56.879+0000 E QUERY [thread1] Error: couldn't connect to server localhost:30158, connection attem
pt failed :
==> default: connect@src/mongo/shell/mongo.js:237:13
==> default: @(connect):1:6
==> default: STDERR: exception: connect failed
==> default: ---- End output of mongo localhost:30158 /tmp/setupUsers.js ----
==> default: Ran mongo localhost:30158 /tmp/setupUsers.js returned 1
==> default:
==> default: Resource Declaration:
==> default: ---------------------
==> default: # In /var/chef/cache/cookbooks/berk/recipes/security.rb
==> default:
==> default: 6: execute "Add Mongo Users" do
==> default: 7: command "mongo localhost:30158 /tmp/setupUsers.js"
==> default: 8: end
==> default:
==> default: Compiled Resource:
==> default: ------------------
==> default: # Declared in /var/chef/cache/cookbooks/berk/recipes/security.rb:6:in `from_file'
==> default:
==> default: execute("Add Mongo Users") do
==> default: action [:run]
==> default: retries 0
==> default: retry_delay 2
==> default: default_guard_interpreter :execute
==> default: command "mongo localhost:30158 /tmp/setupUsers.js"
==> default: backup 5
==> default: returns 0
==> default: user nil
==> default: declared_type :execute
==> default: cookbook_name "berk"
==> default: recipe_name "security"
==> default: end
==> default:
==> default: Platform:
==> default: ---------
==> default: x86_64-linux
==> default:
正如你所看到的，似乎mongod服务还没有运行，但在输出消息的最后，厨师告诉我，这是尝试重新启动延迟服务通知。
==> default: [2017-03-06T10:56:56+00:00] INFO: Running queued delayed notifications before re-raising exception
==> default: [2017-03-06T10:56:56+00:00] INFO: template[/etc/mongod.conf] sending restart action to service[mongod] (delayed)
==> default: Recipe: mongodb3::default
==> default: * service[mongod] action restart
==> default: [2017-03-06T10:56:57+00:00] INFO: service[mongod] restarted
==> default:
==> default: - restart service service[mongod]
==> default: [2017-03-06T10:56:57+00:00] INFO: template[/opt/wildfly/standalone/configuration/standalone-full.xml] sending restart act
ion to service[wildfly] (delayed)
为什么这项服务直到厨师配置结束才开始？ 在Mongo服务启动后，我需要连接到mongo
我看了一下mongodb3食谱。 根据这条线（mongodb3 recipe的默认配方），服务应立即启动。
编辑
我正在使用mongodb3配方。 mongodb3默认配方：
service 'mongod' do
case node['platform']
when 'ubuntu'
if node['platform_version'].to_f >= 15.04
provider Chef::Provider::Service::Systemd
elsif node['platform_version'].to_f >= 14.04
provider Chef::Provider::Service::Upstart
end
end
supports :start => true, :stop => true, :restart => true, :status => true
action :enable
subscribes :restart, "template[#{node['mongodb3']['mongod']['config_file']}]", :delayed
subscribes :restart, "template[#{node['mongodb3']['config']['mongod']['security']['keyFile']}", :delayed
end
我没有在你的食谱中的任何地方看到service[mongod] ，但我想你有以下几行：
service 'mongod' do
action [:enable, :start]
end
此时，Chef启动服务，但可能需要一些时间才能完全运行并响应请求。 厨师不会等待，并继续运行食谱。
您可以尝试多次execute[Add Mongo Users] ，直到它成功完成，如下所示：
execute "Add Mongo Users" do
command "mongo localhost:30158 /tmp/setupUsers.js"
retries 6 #times
retry_delay 10 #seconds
end
这会让您的服务在Chef失败之前开始一分钟。
重要提示：您还应该为execute[Add Mongo Users]提供一些execute[Add Mongo Users] ，否则它会在每次Chef运行时运行。
编辑 （在你展示service[mongod]资源之后。）
它没有启动动作，这就是为什么它没有启动。 所以添加
service 'mongod' do
action :start
end
在execute[Add Mongo Users]资源之前的某处。