ivanarsenijevic/apache-exporter repository overview

This is a Docker container for apache-exporter for 32-bit ARM architecture. It's meant to run on Raspberry Pi (or similar). It is created using the instructions from the official Github repository⁠. There are no official docker containers (at least unknown to me).

⁠Building the container:

First, you need to fetch the binary build for the right platform (arm-v7). It is possible to compile the source code instead, however, that hasn't worked for me. Suppose that, for example, we are going to use:

VERSION=0.9.0

Getting the precompiled binary:

VERSION=0.9.0
wget https://github.com/Lusitaniae/apache_exporter/releases/download/v${VERSION}/apache_exporter-${VERSION}.linux-armv7.tar.gz
tar xvzf apache_exporter-${VERSION}.linux-armv7.tar.gz

Create a Dockerfile with the following contents, as per the official instructions:

FROM busybox:latest

COPY apache_exporter /bin/apache_exporter

ENTRYPOINT ["/bin/apache_exporter"]
EXPOSE     9117

and use to build the container image:

docker build -t "apache-exporter:${VERSION}" apache_exporter-${VERSION}.linux-armv7

⁠Note

For the apache_exporter to work, you need to enable mod_status in Apache and permit the access to "/server-status?auto" URI. In many cases, it's sufficient to enable mod_rewrite and allow access to this URI, but not for me. I am using this to monitor MediaWiki service which calls for aditional care. MediaWiki software is using Short URLs⁠ which means that using just the above configuration will not work. To achieve what's needed, mod_rewrite needs to be enabled and configured like this:

<Directory /var/www/html>
  RewriteEngine On
  RewriteCond %{REQUEST_URI} !=/server-status
  RewriteCond %{REQUEST_URI} !=/server-status?auto
  RewriteCond %{REQUEST_FILENAME} !-f
  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteRule ^ %{DOCUMENT_ROOT}/index.php [L]
</Directory>

I am very thankful for this link⁠ which provided for the mod_rewrite rules.