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[英]Using AWS Cloudwatch to monitor C++ (on-premises, not cloud) program
[英]"Unable to determine aws-region" when running on-premises Cloudwatch agent
我正在尝试将 AWS Cloudwatch 代理配置为在 AWS 之外的 vanilla Ubuntu 18.04 上运行。 每次运行它时,我都会收到此错误:
# /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -a fetch-config -m onPremise -c "file:/path/to/cloudwatch/cloudwatch.json" -s
/opt/aws/amazon-cloudwatch-agent/bin/config-downloader --output-dir /opt/aws/amazon-cloudwatch-agent/etc/amazon-cloudwatch-agent.d --download-source file:/path/to/cloudwatch/cloudwatch.json --mode onPrem --config /opt/aws/amazon-cloudwatch-agent/etc/common-config.toml --multi-config default
Got Home directory: /root
I! Set home dir Linux: /root
Unable to determine aws-region.
Please make sure the credentials and region set correctly on your hosts.
Refer to http://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-started.html
Fail to fetch the config!
在strace -f
下运行程序显示它正在尝试读取/root/.aws/credentials
然后退出。 根据指南,这里是/root/.aws/credentials
的内容:
[AmazonCloudWatchAgent]
aws_access_key_id = key
aws_secret_access_key = secret
region = us-west-2
如果我运行aws configure get region
,它能够正确检索区域。 但是,Cloudwatch 代理无法读取它。 这是common-config.toml
的内容(每个 strace 也会读取它)。
## Configuration for shared credential.
## Default credential strategy will be used if it is absent here:
## Instance role is used for EC2 case by default.
## AmazonCloudWatchAgent profile is used for onPremise case by default.
[credentials]
shared_credential_profile = "AmazonCloudWatchAgent"
shared_credential_file = "/root/.aws/credentials"
## Configuration for proxy.
## System-wide environment-variable will be read if it is absent here.
## i.e. HTTP_PROXY/http_proxy; HTTPS_PROXY/https_proxy; NO_PROXY/no_proxy
## Note: system-wide environment-variable is not accessible when using ssm run-command.
## Absent in both here and environment-variable means no proxy will be used.
# [proxy]
# http_proxy = "{http_url}"
# https_proxy = "{https_url}"
# no_proxy = "{domain}"
这是我尝试过的其他事情:
根据https://forums.aws.amazon.com/thread.jspa?threadID=291589 ,用双引号将配置中的region
(和所有值)括起来。 这并没有什么不同。
添加 /home/myuser/.aws/config、/home/myuser/.aws/credentials 和 /root/.aws/config 并用适当的值填充它们。 根据 strace 这些文件没有被读取。
搜索 CloudWatch 代理的源代码(它不是开源的)
在程序环境中显式设置 AWS_REGION=us-west-2(同样的错误)
将[AmazonCloudWatchAgent]
更改为[profile AmazonCloudWatchAgent]
以及上述所有排列(无区别)
在所有配置文件中添加[default]
部分(没有区别)
直接调用config-downloader
程序,设置AWS_REGION等(同样的错误)
成为非 root 用户,然后使用sudo
调用程序,而不是在没有sudo
的情况下以 root 用户身份调用程序。
无论我尝试什么,我都会遇到同样的错误。 我按照这些说明于 2020 年 3 月 23 日通过下载“最新”deb 安装了 CloudWatch 代理。 https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/download-cloudwatch-agent-commandline.html
aws 配置默认为 C:\\Users\\Administrator,而不是您安装 CloudWatch 代理的用户。 因此,您可能需要将 /.aws/ 文件夹移动到 CLoudWatch 用户。 或者……更直接:
aws configure --profile AmazonCloudWatchAgent
如此处所述: https : //docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/install-CloudWatch-Agent-commandline-fleet.html#install-CloudWatch-Agent-iam_user-first
您还可以使用common-config.toml
指定区域,如下所述: https : //docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/install-CloudWatch-Agent-commandline-fleet.html#CloudWatch-Agent-配置文件实例优先
在运行 Windows Server 的服务器上,此文件位于 C:\\ProgramData\\Amazon\\AmazonCloudWatchAgent 目录中。 默认的 common-config.toml 如下:
# This common-config is used to configure items used for both ssm and cloudwatch access
## Configuration for shared credential.
## Default credential strategy will be used if it is absent here:
## Instance role is used for EC2 case by default.
## AmazonCloudWatchAgent profile is used for onPremise case by default.
# [credentials]
# shared_credential_profile = "{profile_name}"
# shared_credential_file= "{file_name}"
## Configuration for proxy.
## System-wide environment-variable will be read if it is absent here.
## i.e. HTTP_PROXY/http_proxy; HTTPS_PROXY/https_proxy; NO_PROXY/no_proxy
## Note: system-wide environment-variable is not accessible when using ssm run-command.
## Absent in both here and environment-variable means no proxy will be used.
# [proxy]
# http_proxy = "{http_url}"
# https_proxy = "{https_url}"
# no_proxy = "{domain}"
如果需要,您还可以使用新位置更新 common-config.toml。
我使用了一个不正确的“秘密”和一个无效字符,导致 INI 文件解析器中断。 CloudWatch 代理错误地将此报告为“缺失区域”,而解析错误或“密码无效”错误会更准确。
您还必须取消注释/opt/aws/amazon-cloudwatch-agent/etc/amazon-cloudwatch-agent.toml
配置文件中的# [credentials]
设置 AWS_REGION 环境变量。
在 Linux、macOS 或 Unix 上,使用:export AWS_REGION=your_aws_region
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