Summary

When installing Bamboo DC in the Kubernetes platform using Helm chart, some required executables are not installed by default. For example, the installation does not include the Kubernetes API client needed to communicate with the cluster. Also, you may want to add some executables to your clustered agents for Builds, etc. The purpose of this document is to provide an essential guide on how to add the required executables using the initContainer in Bamboo DC and Remote agent Helm chart.

Environment

Bamboo DC

Solution

1. Define additional volumes for application to all Bamboo pods.

   additional volume configuration

   volumes:
     additional:
       - name: executable-mount

2. The above will not create the volume, so you must add it as a property to make the mount point.

   additionalVolumeMounts

   additionalVolumeMounts:
     - name: executable-mount     
       mountPath: /mnt/lib

3. Define an additional init container that will be added to all Bamboo pods. Write the executables to the mount point created above; this also applies to other required executables for your build. In this example of an AWS EKS cluster, kubectl executable is added to the user binary directory of Bamboo or the agent pod.

   additionalInitContainers:
       - name:  eksctl-home-container
         image: ubuntu
         volumeMounts:
           - name: executable-mount           
             mountPath: /mnt/lib
         command: ["/bin/bash"]
         args: ["-c","set -e; apt update; apt upgrade -y; \
               apt install curl tar wget -y;  curl -LO https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl; \
               mv kubectl /mnt/lib; chmod +x /mnt/lib/kubectl; ln -s /mnt/lib/kubectl /usr/local/bin/kubectl"]

4. Install the chart if its a new setup OR Upgrade chart if its an already running instance to reflect the changes;

   helm install bamboo atlassian-data-center/bamboo --version 1.19.0 --values values.yml
   
    OR 
     
   helm upgrade bamboo atlassian-data-center/bamboo --values values.yml