Emi Matchu
99290235f5
While I'm messing with production builds, I keep having to rollback a bunch, so now we finally add tooling for it, lol
71 lines
3 KiB
YAML
71 lines
3 KiB
YAML
---
|
|
- name: Rollback impress to a previous version
|
|
hosts: webserver
|
|
become: yes
|
|
become_user: impress
|
|
vars:
|
|
remote_project_root: "/srv/impress"
|
|
ruby_version: "3.3.7"
|
|
tasks:
|
|
- name: Read the second-to-most-recent version
|
|
command:
|
|
chdir: "{{ remote_project_root }}/versions"
|
|
cmd: bash -c 'ls | tail -n 2 | head -n 1'
|
|
register: new_app_version
|
|
|
|
- name: Print out the new version name
|
|
debug:
|
|
msg: "Rolling back to version: {{ new_app_version.stdout }}"
|
|
|
|
- name: Save new remote folder path to a variable
|
|
set_fact:
|
|
remote_app_root: "{{ remote_project_root }}/versions/{{ new_app_version.stdout }}"
|
|
|
|
- name: Configure Bundler to run in deployment mode
|
|
command:
|
|
chdir: "{{ remote_app_root }}"
|
|
cmd: /opt/ruby-{{ ruby_version }}/bin/bundle config set --local deployment true
|
|
|
|
# This ensures that, while attempting our current deploy, we don't
|
|
# accidentally delete gems out from under the currently-running version.
|
|
# NOTE: From reading the docs, I thiink this is the default behavior, but
|
|
# I can't be sure? Rather than deep-dive to find out, I'd rather just set
|
|
# it, to be clear about the default(?) behavior we're depending on.
|
|
- name: Configure Bundler to *not* clean up old gems when installing
|
|
command:
|
|
chdir: "{{ remote_app_root }}"
|
|
cmd: /opt/ruby-{{ ruby_version }}/bin/bundle config set --local clean false
|
|
|
|
# NOTE: Bundler recommends this, and they're pretty smart about it: if the
|
|
# Gemfile changes, this shouldn't disrupt the currently-running version,
|
|
# because we won't clean up its now-unused gems yet, and if we upgrade a
|
|
# gem it'll install *both* versions of the gem until we clean up.
|
|
- name: Configure Bundler to use the bundle folder shared by all app versions
|
|
command:
|
|
chdir: "{{ remote_app_root }}"
|
|
cmd: "/opt/ruby-{{ ruby_version }}/bin/bundle config set --local path {{ remote_project_root}}/shared/bundle"
|
|
|
|
- name: Run `bundle install` to install dependencies in remote folder
|
|
command:
|
|
chdir: "{{ remote_app_root }}"
|
|
# The `--local` flag instructs Bundler to use the cached dependencies
|
|
# in `vendor/cache`, instead of reading from the web, which is much
|
|
# faster and more reliable!
|
|
cmd: /opt/ruby-{{ ruby_version }}/bin/bundle install --local
|
|
|
|
- name: Update the `current` folder to point to the new version
|
|
file:
|
|
src: "{{ remote_app_root }}"
|
|
dest: /srv/impress/current
|
|
state: link
|
|
|
|
# NOTE: This uses the passwordless sudo rule we set up in deploy:setup.
|
|
# We write it as a command rather than using the built-in `systemd` Ansible
|
|
# module, to make sure we're invoking it exactly as we wrote in that rule.
|
|
#
|
|
# NOTE: We use `sudo` instead of `become_user: root`, because we don't have
|
|
# permission to *become* the root user; we only have permission to run this
|
|
# one command as them.
|
|
- name: Restart the app
|
|
become: no
|
|
command: sudo systemctl restart impress
|