问题

Here i am trying to retrieve latest ami id for k8s worker node.

我在尝试检索最新的 K8s 工作节点 AMI ID。

i have written a bash script for the same, every time i run this script it return errors.

我编写了一个相同的 bash 脚本，每次运行它都会返回错误。

Please set VERSION=v1.23 before running script

请在运行脚本之前设置 VERSION=v1.23

note: when we run the command individually it works.

注意：当我们单独运行命令时，它是有效的。

#!/bin/bash

VERSION=$1

SOURCE_AMI_ID=$(aws ssm get-parameter --name /aws/service/eks/optimized-ami/${VERSION}/amazon-linux-2/recommended/image_id --region us-west-2 --query "Parameter.Value" --output text)
SOURCE_AMI_NAME=$(aws ec2 describe-images --image-ids ${SOURCE_AMI_ID} | jq -r '.Images[0].Name')
AMI_NAME=$(echo "${SOURCE_AMI_NAME}" | sed 's/amazon/kube-infra/g')
jq -n
--arg source_ami_id "${SOURCE_AMI_ID}"
--arg source_ami_name "${SOURCE_AMI_NAME}"
--arg cp_ami_name "${CP_AMI_NAME}"
'{source_ami_id: $source_ami_id, source_ami_name: $source_ami_name, ami_name: $ami_name}'

error:

An error occurred (ValidationException) when calling the GetParameter operation: Parameter name: can't be prefixed with "ssm" (case-insensitive). If formed as a path, it can consist of sub-paths divided by slash symbol; each sub-path can be formed as a mix of letters, numbers and the following 3 symbols .-_

错误：

调用 GetParameter 操作时发生错误（ValidationException）：参数名称不能以 "ssm" 为前缀（不区分大小写）。如果形成为路径，则可以由斜杠符号分隔的子路径组成；每个子路径可以由字母、数字和以下 3 个符号 .-_ 的混合形成。

how i am running the above script

% ./build-versions.sh

我如何运行上述脚本：

% ./build-versions.sh

An error occurred (ValidationException) when calling the GetParameter operation: Parameter name: can't be prefixed with "ssm" (case-insensitive). If formed as a path, it can consist of sub-paths divided by slash symbol; each sub-path can be formed as a mix of letters, numbers and the following 3 symbols .-_
发生错误（ValidationException）：调用 GetParameter 操作时发生错误：参数名称不能以 "ssm" 为前缀（不区分大小写）。如果形成为路径，则可以由斜杠符号分隔的子路径组成；每个子路径可以由字母、数字和以下 3 个符号 .-_ 的混合形成。

#!/bin/bash

VERSION=$1

SOURCE_AMI_ID=$(aws ssm get-parameter --name /aws/service/eks/optimized-ami/${VERSION}/amazon-linux-2/recommended/image_id --region us-west-2 --query "Parameter.Value" --output text)
SOURCE_AMI_NAME=$(aws ec2 describe-images --image-ids ${SOURCE_AMI_ID} | jq -r '.Images[0].Name')
AMI_NAME=$(echo "${SOURCE_AMI_NAME}" | sed 's/amazon/kube-infra/g')
jq -n \
        --arg source_ami_id "${SOURCE_AMI_ID}" \
        --arg source_ami_name "${SOURCE_AMI_NAME}" \
        --arg cp_ami_name "${CP_AMI_NAME}" \
        '{source_ami_id: $source_ami_id, source_ami_name: $source_ami_name, ami_name: $ami_name}'

答案1

得分: 0

请注意

```sh
aws ssm get-parameter \
  --name /aws/service/eks/optimized-ami/v1.23/amazon-linux-2/recommended/image_id \
  --region us-west-2

给我报错（ParameterNotFound）。我需要使用“1.23”而不是“v1.23”来获取有效的响应，即

aws ssm get-parameter \
  --name /aws/service/eks/optimized-ami/1.23/amazon-linux-2/recommended/image_id \
  --region us-west-2

下面我假设您还将使用“1.23”。

在这种情况下，在运行脚本之前设置VERSION=1.23是没有用的。在您的脚本中，VERSION=$1表示它将VERSION设置为脚本的第一个参数。因此，您应该运行

./build-versions.sh 1.23

而不是

VERSION=1.23
./build-versions.sh

如果您真的想在脚本之外设置它，那么您需要使用export VERSION=1.23进行设置，并删除VERSION=$1行。

<details>
<summary>英文:</summary>

Note that 

```sh
aws ssm get-parameter \
  --name /aws/service/eks/optimized-ami/v1.23/amazon-linux-2/recommended/image_id \
  --region us-west-2

Gives me error (ParameterNotFound). I need to use "1.23" instead of "v1.23" to get a valid response, namely

aws ssm get-parameter \
  --name /aws/service/eks/optimized-ami/1.23/amazon-linux-2/recommended/image_id \
  --region us-west-2

Below I assume you will also use "1.23".

Setting VERSION=1.23 before running the script is not useful in this case. In your script, VERSION=$1, which means it sets VERSION to the first argument of the script. Hence, you should run

./build-versions.sh 1.23

Instead of

VERSION=1.23
./build-versions.sh

If you really want to set it outside of your script, then you need to set it with export VERSION=1.23, and remove the VERSION=$1 line.