如何更改IBM-Cloud cloudfoundry golang应用程序版本？

Question

当我运行命令ibmcloud target --cf && ibmcloud cf restart appname时，它显示了一个错误，看起来golang版本无效，但我不能在没有根权限的情况下更改它来指定版本，或者它可以是一个旧版本，例如通过创建容器？

   Downloading app package...
   Downloaded app package (20.8K)
   -----> Go Buildpack version 1.9.16
          **WARNING** [DEPRECATION WARNING]:
          **WARNING** Please use AppDynamics extension buildpack for Golang Application instrumentation
          **WARNING** for more details: https://docs.pivotal.io/partners/appdynamics/multibuildpack.html
   -----> Checking Godeps/Godeps.json file
   -----> Installing godep 80
          Download [https://buildpacks.cloudfoundry.org/dependencies/godep/godep-v80-linux-x64-cflinuxfs3-b60ac947.tgz]
   -----> Installing glide 0.13.3
          Download [https://buildpacks.cloudfoundry.org/dependencies/glide/glide-v0.13.3-linux-x64-cflinuxfs3-ef07acb5.tgz]
   -----> Installing dep 0.5.4
          Download [https://buildpacks.cloudfoundry.org/dependencies/dep/dep-v0.5.4-linux-x64-cflinuxfs3-79b3ab9e.tgz]
          **ERROR** Unable to determine Go version to install: no match found for 1.11.x in [1.13.14 1.13.15 1.14.6 1.14.7]
   Failed to compile droplet: Failed to run all supply scripts: exit status 16
   Exit status 223
   Cell e0f8b881-1ded-45a7-a004-101d32dc7f6d stopping instance 3d1adec5-7f49-47a1-8005-e25e83521422
   Cell e0f8b881-1ded-45a7-a004-101d32dc7f6d destroying container for instance 3d1adec5-7f49-47a1-8005-e25e83521422
Error staging application: App staging failed in the buildpack compile phase

Answer 1

您的环境似乎是为较旧的Golang版本配置的。并且在已安装的可用构建包中找不到该版本。您可以查看您的清单和其他配置文件中设置的版本。或者，您可以使用manifest attribute或命令选项切换到不同的构建包(请参阅ibmcloud cf push --help以列出构建包选项)。

Answer 2

您可以在manifest.yml文件中指定Go版本，如下所示

---
applications:
  - name: my-app-name
    env:
      GOVERSION: go1.8

支持的Go版本可以在release notes中找到。

此外，请参阅getting started with GO指南了解如何在云铸造上使用GO应用程序