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Cloudformation 与 Ubuntu 抛出错误

tag-icon • tag-icon amazon-ec2 amazon-web-services amazon-cloudformation
Cloudformation 与 Ubuntu 抛出错误

我读了一些资料，并了解到如果您希望在 Ubuntu 中使用 launchConfig，您将需要自己安装 cfn-init 文件，我已经完成了：

  "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"
    ]]}}

但是这个设置有问题，我似乎无法得到一个合适的答案。我在日志中不断收到此错误：

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 scripts-user 是什么意思，Google 也帮不上什么忙。当我通过 ssh 进入服务器时，我可以看到它运行了 userdata 脚本，因为我可以以命令的形式访问 cfn-init，而在实例所基于的原始 AMI 中却无法访问。

但是我有一个 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"
          }
        }
      }
    }

似乎根本无法运行。我检查了主目录中是否存在该文件，但该文件不存在。我检查了 cronjob 条目，但它也不存在。阅读完文档后，我似乎无法看出我的代码可能存在什么问题。

您对为什么这不起作用有什么想法吗？我是否忽略了一些明显的东西？

答案1

好的，解决了。

我随机决定，为了更好地调试，我将最小实例数设为 1。这引发了有关我的 launchConfig 的错误。经过一番搜索，我发现我的模板犯了一个非常大的错误。所以我将 launchConfig 更改为：

"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"
          }
        }
      }
    }
  },

并将我的用户数据改为：

    "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"
    ]]}

现在一切运行顺利。

因此，如果您收到用户脚本错误，则意味着您的启动配置错误，您应该再次查看。

谢谢您的帮助 ：）

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