hawkinit

Hawkinit

Simple CLI tool that spawns linked docker containers with Hawkular and some monitored stuff.

About

This simple CLI tool helps you with starting the hawkular-services together with some monitored WildFly servers. Internally, it uses the docker-compose tool and exposes the service on localhost:8080.

How to install

$ sudo npm install hawkinit -g

How to update

$ sudo npm update hawkinit -g

Usage

$ hawkinit

Choose the versions of hawkular-services, Cassandra and instrumented WildFly server you want to start, number of containers or if you want to run WF in standalone mode or in a managed domain. For the domain mode couple of scenarios are prepared. Once every question is answered, you should start seeing the logs from particular containers. Congrats, your hawkular-service is up and running on http://localhost:8080.

For more help:

$ hawkinit -h

Advanced Mode

By default hawkinit asks only limited amount of questions and assumes some default values for some advanced settings. To activate the advanced mode, simply run the hawkinit with -f or --full flag. These are the features that are available in the advanced mode:

• custom version of the cassandra container
• multiple cassandra nodes
• multiple host controllers
• various scenarios for domain mode
• SSL support
• creating custom user in the hawkular-services container
• overriding the immutable flag
• and more will come

Requirements

The hawkinit assumes the docker and docker-compose to be installed, Docker version should be higher than 1.12.0 and also the user that runs the command should be in the docker group.

sudo usermod -a -G docker `whoami`

Add yourself to that group for current session (or logout and log in).

newgrp docker

Make sure the docker deamon is up and running.

sudo systemctl enable docker --now

Make sure the /tmp/opt/data is created and owned by user with UID = 1000. Running following command as non-root (as user with UID=1000) should work.

mkdir -p /tmp/opt/data/ && sudo chown -R $UID:$UID /tmp/opt/data/

Fedora

On Fedora 24 the Docker that is in the default yum repo is obsolete, so remove it and install the docker-engine package from the yum.dockerproject.org repo.

sudo dnf remove docker and follow these instructions https://docs.docker.com/engine/installation/linux/fedora/

Debian

sudo apt-get install docker.io docker-compose

Troubleshooting

If you run the hawkinit, it says something like:

Later, you can find your hawkular-services listening on http://localhost:8080
Running 'docker-compose up --force-recreate' in directory: /tmp/tmp-11573k3ujXFLACh9z

If you navigate to /tmp/tmp-11573k3ujXFLACh9z, you can run docker-dompose up to start it again. This is not a standard use-case, though. Any other docker-compose command works just fine. So for instance you may want to see only the Cassandra logs by docker-compose logs -f myCassandra or inspecting the Hawkular Services container by docker-compose exec hawkular /bin/bash, etc. Also, nothing protects you from editing the docker-compose.yml file that was created in that tmp directory.