我一直在做一些阅读，并得出了一个理解，如果你想在Ubuntu上使用launchConfig，你将需要自己安装cfn-init文件：
"Properties" : { "KeyName" : { "Ref" : "KeyName" }, "SpotPrice" : "0.05", "ImageId" : { "Fn::FindInMap" : [ "AWSRegionArch2AMI", { "Ref" : "AWS::Region" }, { "Fn::FindInMap" : [ "AWSInstanceType2Arch", { "Ref" : "InstanceType" }, "Arch" ] } ] }, "SecurityGroups" : [ { "Ref" : "InstanceSecurityGroup" } ], "InstanceType" : { "Ref" : "InstanceType" }, "UserData" : { "Fn::Base64" : { "Fn::Join" : ["", [ "#!/bin/bash\n", "apt-get -y install python-setuptools\n", "easy_install https://s3.amazonaws.com/cloudformation-examples/aws-cfn-bootstrap-1.0-6.tar.gz\n", "cfn-init ", " --stack ", { "Ref" : "AWS::StackName" }, " --resource LaunchConfig ", " --configset ALL", " --access-key ", { "Ref" : "WorkerKeys" }, " --secret-key ", {"Fn::GetAtt": ["WorkerKeys", "SecretAccessKey"]}, " --region ", { "Ref" : "AWS::Region" }, " || error_exit 'Failed to run cfn-init'\n" ]]}} 但是我对这个设置有一个问题，我似乎无法得到一个合适的答案。 我一直在日志中得到这个错误：
Jun 15 12:02:34 ip-0 [CLOUDINIT] __init__.py[DEBUG]: config-scripts-per-once already ran once Jun 15 12:02:34 ip-0 [CLOUDINIT] __init__.py[DEBUG]: handling scripts-per-boot with freq=None and args=[] Jun 15 12:02:34 ip-0 [CLOUDINIT] __init__.py[DEBUG]: handling scripts-per-instance with freq=None and args=[] Jun 15 12:02:34 ip-0 [CLOUDINIT] __init__.py[DEBUG]: handling scripts-user with freq=None and args=[] Jun 15 12:02:34 ip-0 [CLOUDINIT] cc_scripts_user.py[WARNING]: failed to run-parts in /var/lib/cloud/instance/scripts Jun 15 12:02:34 ip-0 [CLOUDINIT] __init__.py[WARNING]: Traceback (most recent call last):#012 File "/usr/lib/python2.7/dist-packages/cloudinit/CloudConfig/__init__.py", line 117, in run_cc_modules#012 cc.handle(name, run_args, freq=freq)#012 File "/usr/lib/python2.7/dist-packages/cloudinit/CloudConfig/__init__.py", line 78, in handle#012 [name, self.cfg, self.cloud, cloudinit.log, args])#012 File "/usr/lib/python2.7/dist-packages/cloudinit/__init__.py", line 326, in sem_and_run#012 func(*args)#012 File "/usr/lib/python2.7/dist-packages/cloudinit/CloudConfig/cc_scripts_user.py", line 31, in handle#012 util.runparts(runparts_path)#012 File "/usr/lib/python2.7/dist-packages/cloudinit/util.py", line 223, in runparts#012 raise RuntimeError('runparts: %i failures' % failed)#012RuntimeError: runparts: 1 failures Jun 15 12:02:34 ip-0 [CLOUDINIT] __init__.py[ERROR]: config handling of scripts-user, None, [] failed Jun 15 12:02:34 ip-0 [CLOUDINIT] __init__.py[DEBUG]: handling keys-to-console with freq=None and args=[] Jun 15 12:02:34 ip-0 [CLOUDINIT] __init__.py[DEBUG]: handling phone-home with freq=None and args=[] Jun 15 12:02:34 ip-0 [CLOUDINIT] __init__.py[DEBUG]: handling final-message with freq=None and args=[] Jun 15 12:02:34 ip-0 [CLOUDINIT] cloud-init-cfg[ERROR]: errors running cloud_config [final]: ['scripts-user']
我完全不知道什么脚本 – 用户的意思，谷歌在这里也没有什么帮助。 我可以，当我ssh进入服务器，看到它运行userdata脚本，因为我可以访问cfn-init作为命令，而我不能在最初的AMI实例。
不过我有一个launchConfig：
"Comment" : "Install a simple PHP application", "AWS::CloudFormation::Init" : { "configSets" : { "ALL" : ["WorkerRole"] }, "WorkerRole" : { "files" : { "/etc/cron.d/worker.cron" : { "content" : "*/1 * * * * ubuntu /home/ubuntu/worker_cron.php &> /home/ubuntu/worker.log\n", "mode" : "000644", "owner" : "root", "group" : "root" }, "/home/ubuntu/worker_cron.php" : { "content" : { "Fn::Join" : ["", [ "#!/usr/bin/env php", "<?php", "define('ROOT', dirname(__FILE__));", "const AWS_KEY = \"", { "Ref" : "WorkerKeys" }, "\";", "const AWS_SECRET = \"", { "Fn::GetAtt": ["WorkerKeys", "SecretAccessKey"]}, "\";", "const QUEUE = \"", { "Ref" : "InputQueue" }, "\";", "exec('git clone x '.ROOT.'/worker');", "if(!file_exists(ROOT.'/worker/worker_despatcher.php')){", "echo 'git not downloaded right';", "exit();", "}", "echo 'git downloaded';", "include_once ROOT.'/worker/worker_despatcher.php';" ]]}, "mode" : "000755", "owner" : "ubuntu", "group" : "ubuntu" } } } }
这似乎并没有运行。 我检查了我的主目录中存在的文件，它不在那里。 我已经检查了cronjob条目，它也不在那里。 在阅读完文档之后，我看不出有什么可能出错的代码。
任何想法，为什么这不工作？ 我错过了一些公然的东西吗？
好的解决了。
我随机决定，为了更好的debugging，我会做一个最小实例数为1.这就抛出了关于我的launchConfig错误。 经过一番徘徊，我发现我的模板已经犯了一个很大的错误。 所以我把launchConfig改成了：
"LaunchConfig" : { "Type" : "AWS::AutoScaling::LaunchConfiguration", "Metadata" : { "Comment" : "Install a simple PHP application", "AWS::CloudFormation::Init" : { "config" : { "files" : { "/etc/cron.d/worker" : { "content" : "*/1 * * * * ubuntu /home/ubuntu/worker_cronjob &> /home/ubuntu/worker.log\n", "mode" : "000644", "owner" : "root", "group" : "root" }, "/home/ubuntu/worker_cronjob" : { "content" : { "Fn::Join" : ["", [ "#!/usr/bin/env php\n", "<?php\n", "define('ROOT', dirname(__FILE__));", "const AWS_KEY = \"", { "Ref" : "WorkerKeys" }, "\";", "const AWS_SECRET = \"", { "Fn::GetAtt": ["WorkerKeys", "SecretAccessKey"]}, "\";", "const QUEUE = \"", { "Ref" : "InputQueue" }, "\";", "exec('git clone x '.ROOT.'/worker');", "if(!file_exists(ROOT.'/worker/worker_despatcher.php')){", "echo 'git not downloaded right';", "exit();", "}", "echo 'git downloaded';", "include_once ROOT.'/worker/worker_despatcher.php';" ]]}, "mode" : "000755", "owner" : "ubuntu", "group" : "ubuntu" } } } } },
和我的用户数据：
"UserData" : { "Fn::Base64" : { "Fn::Join" : ["", [ "#!/bin/bash\n", "apt-get -y install python-setuptools\n", "easy_install https://s3.amazonaws.com/cloudformation-examples/aws-cfn-bootstrap-latest.tar.gz\n", "cfn-init -v ", " -s ", { "Ref" : "AWS::StackName" }, " -r LaunchConfig ", " --access-key ", { "Ref" : "WorkerKeys" }, " --secret-key ", {"Fn::GetAtt": ["WorkerKeys", "SecretAccessKey"]}, " --region ", { "Ref" : "AWS::Region" }, "\n" ]]}
现在一切都很正常。
所以，如果你得到的用户脚本错误，这意味着你的启动configuration是错误的，你应该再看一遍。
谢谢您的帮助 ：）