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DockerHook

Installation of Docker webhook. This service would capture the push events coming from githook service. The service would then capture the repository name, branch name and repository url and trigger a docker build . Once the build is completed and image is pushed into local docker registry. Afterwards the service would send notification reghook service to deploy the image to kubernetes cluster.

Once it receives a push message it runs the build.sh to trigger the Docker build. It has config file which mentions what would be port number (APP_PORT) image should expose or application should run. Depending on the type of application it would trigger docker build using different docker file. The service would expect the repository would provide below details in the configuration file present at the root of the repository BUILD_TYPE, APP_SRC_CODE, MAIN_CLASS, IMAGE_NAME, REPO_NAME

Parameter Description Default
BUILD_TYPE Technology stack of the application.REACT, NODE, SPRING
APP_SRC_CODE Path where application source code is present. server
MAIN_CLASS In case of springboot application, fully qualified main class.
IMAGE_NAME The name of the docker image. sumit/$REPO_NAME
REPO_NAME The name of the repository in docker registry.
  • The port number the service is listening is 5002.
  • The end which would receive the push messages /process.
  • Hostname is dockerhook.default.svc.cloud.uat.
  • The application code is present in server/index.js.
  • The configuration files for build and push is present in config file.

Configuration

The following table lists the configurable parameters of the registry install and their default values.

Parameter Description Default
APP_HOST Hostname of the certificate. master.cloud.com
MOUNT_PATH The mount path where kubernetes scripts and certificates are available. /root

Installation steps:

cd /root/kubernetes/install_k8s/dcokerhook
chmod +x *.sh
./run_dockerhook.sh
  • To view logs run logs.sh:
cd /root/kubernetes/install_k8s/dockerhook/chart/util
./log.sh
  • To get container terminal run bash.sh:
cd /root/kubernetes/install_k8s/dockerhook/chart/util
./bash.sh