Files
k3s-ansible/roles/k3s_agent/tasks/main.yml
anon-software 040d37878b Prevent multiple tokens in k3s.service.env (#364)
* Prevent multiple tokens in k3s.service.env

If site.yml playbook is executed multiple times with different tokens,
they will all accumulate in k3s.service.env. They won't do any harm
because the last one wins, however it is a matter of good housekeeping
to delete the old before inserting a new one.

Signed-off-by: Marko Vukovic <8951449+anon-software@users.noreply.github.com>

* Selectively remove existing token from the environment file

If the existing token in the environment file is the same as the token
used for the playbook run, leave it in the file to avoid false changed
status from the task.

Signed-off-by: Marko Vukovic <8951449+anon-software@users.noreply.github.com>

---------

Signed-off-by: Marko Vukovic <8951449+anon-software@users.noreply.github.com>
2024-10-07 09:44:28 -07:00

67 lines
2.3 KiB
YAML

---
- name: Get k3s installed version
ansible.builtin.command: k3s --version
register: k3s_version_output
changed_when: false
ignore_errors: true
- name: Set k3s installed version
when: k3s_version_output.rc == 0
ansible.builtin.set_fact:
installed_k3s_version: "{{ k3s_version_output.stdout_lines[0].split(' ')[2] }}"
# If airgapped, all K3s artifacts are already on the node.
# We should be downloading and installing the newer version only if we are in one of the following cases :
# - we couldn't get k3s installed version in the first task of this role
# - the installed version of K3s on the nodes is older than the requested version in ansible vars
- name: Download artifact only if needed
when: k3s_version_output.rc != 0 or installed_k3s_version is version(k3s_version, '<') and airgap_dir is undefined
block:
- name: Download K3s install script
ansible.builtin.get_url:
url: https://get.k3s.io/
timeout: 120
dest: /usr/local/bin/k3s-install.sh
owner: root
group: root
mode: "0755"
- name: Download K3s binary
ansible.builtin.command:
cmd: /usr/local/bin/k3s-install.sh
environment:
INSTALL_K3S_SKIP_START: "true"
INSTALL_K3S_VERSION: "{{ k3s_version }}"
INSTALL_K3S_EXEC: "agent"
changed_when: true
- name: Delete any existing token from the environment if different from the new one
ansible.builtin.lineinfile:
state: absent
path: "{{ systemd_dir }}/k3s-agent.service.env"
regexp: "^K3S_TOKEN=\\s*(?!{{ token }}\\s*$)"
- name: Add the token for joining the cluster to the environment
no_log: true # avoid logging the server token
ansible.builtin.lineinfile:
path: "{{ systemd_dir }}/k3s-agent.service.env"
line: "{{ item }}"
with_items:
- "K3S_TOKEN={{ token }}"
- name: Copy K3s service file
register: k3s_agent_service
ansible.builtin.template:
src: "k3s-agent.service.j2"
dest: "{{ systemd_dir }}/k3s-agent.service"
owner: root
group: root
mode: "u=rw,g=r,o=r"
- name: Enable and check K3s service
ansible.builtin.systemd:
name: k3s-agent
daemon_reload: "{{ true if k3s_agent_service.changed else false }}"
state: "{{ 'restarted' if k3s_agent_service.changed else 'started' }}"
enabled: true