Helm servecm插件安装失败，请求排查调试方案

使用install_helm.sh脚本安装Helm的servecm插件时失败，此前该脚本在其他机器可正常运行。当前现象为脚本持续循环提示servecm not yet running. sleeping for 2 seconds，nohup日志显示安装ChartMuseum时出现S3访问拒绝错误，curl命令解析主机失败。

脚本内容 #

echo "Installing servecm (Chart Manager) and common templates to helm3"

helm plugin install https://github.com/jdolitsky/helm-servecm
eval $(helm env |grep HELM_REPOSITORY_CACHE)
echo ${HELM_REPOSITORY_CACHE}

nohup helm servecm --port=8879 --context-path=/charts --storage local --storage-local-rootdir $HELM_REPOSITORY_CACHE/local/ <<EOF &
yes
EOF

CURL_CMD="curl --silent --output /dev/null  http://127.0.0.1:8879/charts"
`${CURL_CMD}`
READY=$?
while [ ${READY} != 0 ]; do
        echo "servecm not yet running. sleeping for 2 seconds"
        sleep 2
        `${CURL_CMD}`
        READY=$?
done

nohup日志错误信息 #

ChartMuseum not installed. Install latest stable release? (type "yes"): Attempting to install ChartMuseum server (<?xml version="1.0" encoding="UTF-8"?>
<Error><Code>AccessDenied</Code><Message>Access Denied</Message><RequestId>AJSFRBH3EY2MFNDJ</RequestId><HostId>xjT8lkHaQIVUlmXOQJTTCGT+3vRA/YfvYwYzdTJM9ppLWUKcbf9qu9c07Ow0dbYDxDTUUSI2yTA=</HostId></Error>)...
Detected your os as "linux"
+ curl -LO 'https://s3.amazonaws.com/chartmuseum/release/<?xml' 'version="1.0"' 'encoding="UTF-8"?>' '<Error><Code>AccessDenied</Code><Message>Access' 'Denied</Message><RequestId>AJSFRBH3EY2MFNDJ</RequestId><HostId>xjT8lkHaQIVUlmXOQJTTCGT+3vRA/YfvYwYzdTJM9ppLWUKcbf9qu9c07Ow0dbYDxDTUUSI2yTA=</HostId></Error>/bin/linux/amd64/chartmuseum'
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   243    0   243    0     0    250      0 --:--:-- --:--:-- --:--:--   250
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0curl: (6) Could not resolve host: version="1.0"
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0curl: (6) Could not resolve host: encoding="UTF-8"
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0curl: (6) Could not resolve host: <Error><Code>AccessDenied<
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0curl: (6) Could not resolve host: Denied<
+ rm -rf /tmp/tmp.OzCIXcXSxl
Error: plugin "servecm" exited with error

环境变量HELM_REPOSITORY_CACHE值 #

root@Ubuntu-20:/home/ravi/ric-dep/bin# helm env |grep HELM_REPOSITORY_CACHE
HELM_REPOSITORY_CACHE="/root/.cache/helm/repository"
root@Ubuntu-20:/home/ravi/ric-dep/bin# 

从日志可见，servecm插件自动安装ChartMuseum时，请求S3存储的资源返回AccessDenied错误，插件错误地将XML格式的错误信息当作版本号拼接进下载URL，导致curl把URL拆分成多个无效主机名，最终解析失败，ChartMuseum未安装成功，进而servecm无法启动，触发脚本的循环检测。

1. 手动安装ChartMuseum绕过自动下载 #

• 直接获取对应系统的ChartMuseum二进制包（比如Linux amd64版本）
• 将二进制文件放到系统PATH目录（如/usr/local/bin），赋予执行权限：

  chmod +x /usr/local/bin/chartmuseum
  

• 验证安装：

  chartmuseum --version
  

2. 检查网络访问权限 #

• 测试当前机器能否访问S3的ChartMuseum存储路径：

  curl -v https://s3.amazonaws.com/chartmuseum/release/stable.txt
  

  • 若返回403 AccessDenied，说明机器网络受限（防火墙、代理、AWS区域限制等），需调整网络策略，或改用手动下载方式
• 检查代理配置：执行echo $http_proxy $https_proxy，若网络需要代理但未配置，先设置代理环境变量

3. 修复脚本的自动交互逻辑 #

原脚本用here-doc传递yes可能存在交互接收问题，改用管道传递输入：

# 替换原nohup启动命令
nohup yes | helm servecm --port=8879 --context-path=/charts --storage local --storage-local-rootdir $HELM_REPOSITORY_CACHE/local/ &

4. 验证servecm启动状态 #

• 手动执行启动命令，查看实时输出：

  yes | helm servecm --port=8879 --context-path=/charts --storage local --storage-local-rootdir $HELM_REPOSITORY_CACHE/local/
  

• 检查进程是否存在：

  ps aux | grep chartmuseum
  

• 检查端口监听情况：

  ss -tulpn | grep 8879
  

5. 重新安装servecm插件 #

• 查看已安装插件：

  helm plugin list
  

• 卸载后重装：

  helm plugin uninstall servecm
  helm plugin install https://github.com/jdolitsky/helm-servecm
  

6. 确认存储目录权限 #

• 创建并设置存储目录权限：

  mkdir -p $HELM_REPOSITORY_CACHE/local/
  chmod -R 755 $HELM_REPOSITORY_CACHE/local/
  

内容的提问来源于stack exchange，提问作者myquest5 sh