CoreOS Essentials Installer and Toolbox Image

The main goal of this project is to enable DevOps installing essential tools on CoreOS server which originally has no software package manager. Besides this, the Docker image can be used as a toolbox with ZSH shell and Oh-My-Zsh configuration.

Curently available applications supported by CoreOS Essentials Installer are presented in the table below:

App Name	From deb/src	Installation Script	Executable @ CoreOS	Dependencies XX
zsh	src	install-zsh.sh	/opt/bin/zsh	n/a
Oh-My-Zsh	src	install-ohmyzsh.sh	~/.oh-my-zsh X	zsh, tmux, git
tmux	deb	install-tmux.sh	/opt/bin/tmux	n/a
nano	deb	install-nano.sh	/opt/bin/nano	n/a
mc	src	install-mc.sh	/opt/bin/mc	n/a
docker-compose	src	install-dockercompose.sh	/opt/bin/docker-compose	n/a

Note that running toolbox image contains all the same applications.

(X) Oh-My-Zsh is automatically installed for root and core users only.
(XX) Dependencies are installed automatically.

Installation guides

Very quick installation guide

Once CoreOS has been succesfully installed and internet connection has been established, all has to be done in order to install all supported applications is to run the following docker command as root or core user:

docker run --rm \
 -v /etc:/mnt/etc \
 -v /root:/mnt/root \
 -v /home/core:/mnt/core \
 -v /opt/bin:/opt/bin \
 adelaar/coreos-essentials-installer install-all.sh

Note that all mount poits (-v options) are required and cannot be modified. It's required to keep them as they are.

Install CoreOS Essentials automatically with cloud-config.yml during CoreOS installation process

In order to install all applications supported by CoreOS Essentials Installer automatically during CoreOS's first boot, add the following YAML snippet to your cloud-config.yml

coreos:
  units:
    # Runs only once and installs all essential tools coming with the installer
    - name: essential-tools-installer.service
      command: start
      content: |
        [Unit]
        Description=Essential Tools Installer
        After=docker.service
        Requires=docker.service
        ConditionPathExists=!/opt/systemd/essential-tools-installer

        [Service]
        ExecStartPre=/usr/bin/docker pull adelaar/coreos-essentials-installer
        ExecStart=/usr/bin/docker run --rm -v /etc:/mnt/etc -v /root:/mnt/root -v /home/core:/mnt/core -v /opt/bin:/opt/bin adelaar/coreos-essentials-installer install-all.sh
        ExecStartPost=/usr/bin/mkdir -p /opt/systemd
        ExecStartPost=/usr/bin/touch /opt/systemd/essential-tools-installer
        RemainAfterExit=yes
        Type=oneshot

One will be able to watch the installation process, which requires a significant amount of time to complete, using the following command:

sudo journalctl -f -u essential-tools-installer.service

Manual installation of selected applications only

In order to install only selected application instead of all, apropriate installation script needs to be called. Look at the Installation Script collumn in the table at the top of this document to find a script name for the application you want to install. The just use it with the following docker command:

docker run --rm \
 -v /etc:/mnt/etc \
 -v /root:/mnt/root \
 -v /home/core:/mnt/core \
 -v /opt/bin:/opt/bin \
 adelaar/coreos-essentials-installer install-<app-name>.sh

Note that if install-ohmyzsh.sh script will be called, then additionally zsh, tmux and git applications will be installed automatically.