Hello.

I am writing regarding an issue I am having on a self-hosted runner in Github Actions. I want to see if I am missing something, or am just being stupid - hopefully someone here knows what my issue is.

Let’s get started.

Everything was fine before I decided to update my Java project (using Maven) from java 8 to java 17. After which, a bunch of issues started. I eventually tracked down that the issue came from the fact that the Maven I got from the apt package manager was an older version (3.6.x) while for java 17, I needed a recent version (3.8.x). Now… The apt package manager does not have that, so I had to go through the manual installation process for it.

I used this page here as a guide/tutorial and got it working from shell, at least.

That’s where the main issue comes in. Github Actions cannot seem to access the ‘mvn’ command (throws error regarding mvn cmd not being found). However, when I use either root or the user which runner is under manually from ssh, it does actually exist and work.

I am using Ubuntu 18.04.

Here is my mvn -v output:

mvnver752×86 4.79 KB

And Github Actions error:

Run mvn clean install deploy -B "-DcustomVersion=dev-33"
/home/operations/actions-runner/_work/_temp/a9f0474a-e306-44d5-8093-0473929c5cb8.sh: line 1: mvn: command not found
Error: Process completed with exit code 127.

Finally, my workflow file. I don’t know how exactly the text formatting work here, so apologies if the spacing gets messed up.

on:
  push:
    branches:
      - dev
      - release
      - alpha
  workflow_dispatch:
jobs:

build:

runs-on: self-hosted
steps:
  - uses: actions/checkout@v1

  - name: Get branch name
    id: branch-name
    uses: tj-actions/branch-names@v5.1

  - name: Cache Maven packages
    id: cache
    uses: actions/cache@v2
    with:
      path: ~/.m2
      key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
      restore-keys: ${{ runner.os }}-m2
      
  - name: Setup settings.xml
    uses: s4u/maven-settings-action@v2.4.1
    with:
      servers: |
        [
           {
              "id":"x3",
              "username":"${{ secrets.ARTIFACTS_USER }}",
              "password":"${{ secrets.ARTIFACTS_PASS }}"
           },
           {
              "id":"x2",
              "username":"${{ secrets.ARTIFACTS_USER }}",
              "password":"${{ secrets.ARTIFACTS_PASS }}"
           },
           {
              "id":"x1",
              "username":"${{ secrets.ARTIFACTS_USER }}",
              "password":"${{ secrets.ARTIFACTS_PASS }}"
           }
        ]
  - name: Build with Maven
    run: mvn clean install deploy -B "-DcustomVersion=${{ steps.branch-name.outputs.current_branch }}-${{ github.run_number }}"