InstanceAgent::Plugins::CodeDeployPlugin::CommandPoller:缺少凭据-请检查此实例是否使用IAM实例配置文件启动。

Question

如果我尝试使用AWS从GitHub项目运行部署到EC2实例，则从/var/log/aws/codedeploy-agent/codedeploy-agent.log获得以下错误消息

2022-08-01 11:07:25 INFO  [codedeploy-agent(3386)]: master 3386: Spawned child 1/1
2022-08-01 11:07:25 INFO  [codedeploy-agent(3388)]: On Premises config file does not exist or not readable
2022-08-01 11:07:25 INFO  [codedeploy-agent(3388)]: CodeDeploy endpoint: https://codedeploy-commands.us-east-2.amazonaws.com
2022-08-01 11:07:25 INFO  [codedeploy-agent(3388)]: InstanceAgent::Plugins::CodeDeployPlugin::CommandExecutor: Archives to retain is: 5}
2022-08-01 11:07:25 INFO  [codedeploy-agent(3388)]: CodeDeploy endpoint: https://codedeploy-commands.us-east-2.amazonaws.com
2022-08-01 11:07:25 INFO  [codedeploy-agent(3388)]: CodeDeploy endpoint: https://codedeploy-commands.us-east-2.amazonaws.com
2022-08-01 11:07:25 INFO  [codedeploy-agent(3388)]: Version file found in /opt/codedeploy-agent/.version with agent version OFFICIAL_1.3.2-1902_deb.
2022-08-01 11:07:25 ERROR [codedeploy-agent(3388)]: InstanceAgent::Plugins::CodeDeployPlugin::CommandPoller: Missing credentials - please check if this instance was started with an IAM instance profile
2022-08-01 11:07:26 INFO  [codedeploy-agent(3386)]: Started master 3386 with 1 children
2022-08-01 11:07:36 INFO  [codedeploy-agent(3388)]: Version file found in /opt/codedeploy-agent/.version with agent version OFFICIAL_1.3.2-1902_deb.
2022-08-01 11:07:36 ERROR [codedeploy-agent(3388)]: InstanceAgent::Plugins::CodeDeployPlugin::CommandPoller: Missing credentials - please check if this instance was started with an IAM instance profile
2022-08-01 11:07:49 INFO  [codedeploy-agent(3388)]: Version file found in /opt/codedeploy-agent/.version with agent version OFFICIAL_1.3.2-1902_deb.
2022-08-01 11:07:49 ERROR [codedeploy-agent(3388)]: InstanceAgent::Plugins::CodeDeployPlugin::CommandPoller: Missing credentials - please check if this instance was started with an IAM instance profile

EC2实例分配了IAM角色：

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IAM权限策略

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IAM信任关系

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "",
            "Effect": "Allow",
            "Principal": {
                "Service": [
                    "ec2.amazonaws.com",
                    "codedeploy.amazonaws.com"
                ]
            },
            "Action": "sts:AssumeRole"
        }
    ]
}

我尝试重新启动ec2实例并通过命令重新启动代码部署代理：

sudo service codedeploy-agent restart

但这没什么用

Answer 1

IAM角色缺少AmazonS3ReadOnlyAccess权限。