docker/httpd:配置错误:未加载 MPM [英] docker/httpd: Configuration error: No MPM loaded

问题描述

我有一个基于 httpd 官方镜像的 docker 容器.从无到有(在新构建之后)，它开始失败并出现错误:

I have a docker container based in the httpd official image. From nowhere (after a new build), it started failing with the error:

AH00534: httpd: Configuration error: No MPM loaded.

没有别的.

我使用的是官方 httpd 映像(FROM httpd:2.4)，到目前为止一切正常.
该错误仅在使用 docker system prune -af

I'm using the official httpd image (FROM httpd:2.4) and everything was working fine until now.
The error appeared only after pruning all images in my system with a docker system prune -af

推荐答案

(编辑，感谢 delboy1978uk)如果应用简单的最佳实践，则可以避免该错误:将您的 docker 图像固定到特定版本而不是 latest.

(edit, thanks delboy1978uk) The error could be avoided if applied a simple best practice: pin your docker images to a specific version instead of latest.

在挖掘了官方httpd镜像的提交后，我找到了解决方案.(也许这个问题/答案可能对其他人有帮助)

After digging the commits of the official httpd image, I found the solution. (maybe this question/answer may help others)

对于那些在寻找解决方案时偶然发现此说明的人，只需将 LoadModule mpm_event_module modules/mod_mpm_event.so 添加到httpd.conf 位于其他 LoadModule 指令之上.

For those who stumble onto this note while looking for a solution, just add LoadModule mpm_event_module modules/mod_mpm_event.so into httpd.conf above the other LoadModule directives.

(来自对提交的评论 #17166574)

所以，因为我在没有明确声明 MPM 模块的情况下覆盖了文件 /usr/local/apache2/conf/httpd.conf，在这次提交之后，我的图像开始失败.
有了这个快速修复，现在一切都很好.

So, because I was overriding the file /usr/local/apache2/conf/httpd.conf without explicitly declare an MPM module, after this commit, my image started to fail.
With this quick fix, everything is fine now.

为了完全更正，请将其添加到您的 httpd.conf 文件中(感谢 svinther):

For the complete correction, add this to your httpd.conf file (thanks svinther):

LoadModule mpm_event_module modules/mod_mpm_event.so
#LoadModule mpm_prefork_module modules/mod_mpm_prefork.so
#LoadModule mpm_worker_module modules/mod_mpm_worker.so

或者，为了获得更面向未来的解决方案，您可以使用 sed 修改原始的 http.conf 文件.

or, for a more future-proof solution, you could modify the original http.conf file using sed.

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