roq-services

Ansible script to install services.

Design

Directories

what	system	user
Miniforge3	/opt/conda	~/.local/share/conda
systemd units	/etc/systemd/system	~/.config/systemd/user
config	/usr/local/etc/roq	~/.config/roq
data	/var/lib/roq/data	~/.local/share/roq
cache	/var/lib/roq/cache	~/.local/state/roq

Dedendencies

• Ansible
• Miniforge3
• systemd

Prerequisites

Ansible

You need ansible to run the playbook.

If using conda, you can install ansible (on your local machine) like this

conda install --freeze-installed -y ansible

Remote Host

This is the server you will install to.

It is identified by an IPv4 address (a.b.c.d) and you must be able to log on with ssh and your ansible_user.

Inventory File

Ansible requires an inventory file (name is not important, we will name it "example")

[example]
server ansible_host="a.b.c.d" ansible_user="ansible" systemd_scope="system" become_user="root"

We're using the label server.

We need a become_user (elevated rights) when systemd_scope="system".

Alternatively, we can also use the script to install the services on our workstation

[example]
workstation ansible_host="a.b.c.d" ansible_user="ansible" systemd_scope="user"

We're using the label workstation.

We don't need a become_user.

Host Variables

This is the place to configure your specific services.

Host specific variable will be imported from host_vars/server.yml or host_vars/workstation.yml.

The filename is automatically matched to the label server or workstation that you specified in your inventory file.

Group Variables

Common variables can be found in group_vars/all.yml.

This file contains all the defaults.

You can override the defaults by configuring host variables.

Running

When installing to systemd_scope="system", you need the become_user (typically root) and you then you often need to specify a password to gain elevated permissions

ansible-playbook -i example site.yml --ask-become-pass

You don't need this when installing on your workstations (systemd_scope="user")

ansible-playbook -i example site.yml

Using

You will need elevated permissions (sudo) if using systemctl on a server

You will need to use systemctl --user (no sudo) when using systemctl on your workstation

These following steps to start/stop services can also be achieved through Roq's service manager

Start gateway

systemctl start deribit

Status

systemctl status deribit

Tail logs

journalctl -f -u deribit

License

The project is released under the terms of the MIT license.