add uninstall state
This commit is contained in:
Devin Buhl
parent
c4547306ce
commit
9bbf5fd746
75
README.md
75
README.md
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@ -43,44 +43,43 @@ my spare time so I cannot promise a speedy fix delivery.
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Below are variables that are set against all of the play hosts for environment
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consistency.
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| Variable | Description | Default Value |
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|----------------------------------|--------------------------------------------------------------------------|-----------------------------------------|
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| `k3s_cluster_state` | State of cluster: installed, started, stopped, restarted, downloaded. | installed |
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| `k3s_release_version` | Use a specific version of k3s, eg. `v0.2.0`. Specify `false` for latest. | `false` |
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| `k3s_github_url` | Set the GitHub URL to install k3s from. | https://github.com/rancher/k3s |
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| `k3s_install_dir` | Installation directory for k3s. | `/usr/local/bin` |
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| `k3s_server_manifests_dir` | Path for place the `k3s_server_manifests_templates`. | `/var/lib/rancher/k3s/server/manifests` |
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| `k3s_server_manifests_templates` | A list of Auto-Deploying Manifests Templates. | [] |
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| `k3s_use_experimental` | Allow the use of experimental features in k3s. | `false` |
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| `k3s_non_root` | Install k3s as non-root user. See notes below. | `false` |
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| `k3s_control_workers` | Are control hosts also workers? | `true` |
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| `k3s_cluster_cidr` | Network CIDR to use for pod IPs | 10.42.0.0/16 |
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| `k3s_service_cidr` | Network CIDR to use for service IPs | 10.43.0.0/16 |
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| `k3s_control_node_address` | Use a specific control node address. IP or FQDN. | _NULL_ |
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| `k3s_control_token` | Use a specific control token, please read notes below. | _NULL_ |
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| `k3s_https_port` | HTTPS port listening port. | 6443 |
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| `k3s_use_docker` | Use Docker rather than Containerd? | `false` |
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| `k3s_no_flannel` | Do not use Flannel | `false` |
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| `k3s_flannel_backend` | Flannel backend ('none', 'vxlan', 'ipsec', 'host-gw' or 'wireguard') | vxlan |
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| `k3s_no_coredns` | Do not use CoreDNS | `false` |
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| `k3s_cluster_dns` | Cluster IP for CoreDNS service. Should be in your service-cidr range. | _NULL_ |
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| `k3s_cluster_domain` | Cluster Domain. | cluster.local |
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| `k3s_resolv_conf` | Kubelet resolv.conf file | _NULL_ |
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| `k3s_no_traefik` | Do not use Traefik | `false` |
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| `k3s_no_servicelb` | Do not use ServiceLB, necessary for using something like MetalLB. | `false` |
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| `k3s_no_local_storage` | Do not use Local Storage | `false` |
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| `k3s_default_local_storage_path` | Set Local Storage Path. Specify `false` for default. |
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`false` |
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| `k3s_no_metrics_server` | Do not deploy metrics server | `false` |
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| `k3s_disable_scheduler` | Disable Kubernetes default scheduler | `false` |
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| `k3s_disable_cloud_controller` | Disable k3s default cloud controller manager. | `false` |
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| `k3s_disable_network_policy` | Disable k3s default network policy controller. | `false` |
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| `k3s_write_kubeconfig_mode` | Define the file mode from the generated KubeConfig, eg. `644` | _NULL_ |
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| `k3s_datastore_endpoint` | Define the database or etcd cluster endpoint for HA. | _NULL_ |
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| `k3s_datastore_cafile` | Define the database TLS CA file. | _NULL_ |
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| `k3s_datastore_certfile` | Define the database TLS Cert file. | _NULL_ |
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| `k3s_datastore_keyfile` | Define the database TLS Key file. | _NULL_ |
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| `k3s_dqlite_datastore` | Use DQLite as the database backend for HA. (EXPERIMENTAL) | `false` |
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| Variable | Description | Default Value |
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|----------------------------------|-------------------------------------------------------------------------------------|-----------------------------------------|
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| `k3s_cluster_state` | State of cluster: installed, started, stopped, restarted, downloaded, uninstall. | installed |
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| `k3s_release_version` | Use a specific version of k3s, eg. `v0.2.0`. Specify `false` for latest. | `false` |
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| `k3s_github_url` | Set the GitHub URL to install k3s from. | https://github.com/rancher/k3s |
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| `k3s_install_dir` | Installation directory for k3s. | `/usr/local/bin` |
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| `k3s_server_manifests_dir` | Path for place the `k3s_server_manifests_templates`. | `/var/lib/rancher/k3s/server/manifests` |
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| `k3s_server_manifests_templates` | A list of Auto-Deploying Manifests Templates. | [] |
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| `k3s_use_experimental` | Allow the use of experimental features in k3s. | `false` |
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| `k3s_non_root` | Install k3s as non-root user. See notes below. | `false` |
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| `k3s_control_workers` | Are control hosts also workers? | `true` |
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| `k3s_cluster_cidr` | Network CIDR to use for pod IPs | 10.42.0.0/16 |
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| `k3s_service_cidr` | Network CIDR to use for service IPs | 10.43.0.0/16 |
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| `k3s_control_node_address` | Use a specific control node address. IP or FQDN. | _NULL_ |
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| `k3s_control_token` | Use a specific control token, please read notes below. | _NULL_ |
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| `k3s_https_port` | HTTPS port listening port. | 6443 |
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| `k3s_use_docker` | Use Docker rather than Containerd? | `false` |
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| `k3s_no_flannel` | Do not use Flannel | `false` |
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| `k3s_flannel_backend` | Flannel backend ('none', 'vxlan', 'ipsec', 'host-gw' or 'wireguard') | vxlan |
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| `k3s_no_coredns` | Do not use CoreDNS | `false` |
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| `k3s_cluster_dns` | Cluster IP for CoreDNS service. Should be in your service-cidr range. | _NULL_ |
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| `k3s_cluster_domain` | Cluster Domain. | cluster.local |
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| `k3s_resolv_conf` | Kubelet resolv.conf file | _NULL_ |
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| `k3s_no_traefik` | Do not use Traefik | `false` |
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| `k3s_no_servicelb` | Do not use ServiceLB, necessary for using something like MetalLB. | `false` |
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| `k3s_no_local_storage` | Do not use Local Storage | `false` |
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| `k3s_default_local_storage_path` | Set Local Storage Path. Specify `false` for default. | `false` |
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| `k3s_no_metrics_server` | Do not deploy metrics server | `false` |
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| `k3s_disable_scheduler` | Disable Kubernetes default scheduler | `false` |
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| `k3s_disable_cloud_controller` | Disable k3s default cloud controller manager. | `false` |
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| `k3s_disable_network_policy` | Disable k3s default network policy controller. | `false` |
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| `k3s_write_kubeconfig_mode` | Define the file mode from the generated KubeConfig, eg. `644` | _NULL_ |
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| `k3s_datastore_endpoint` | Define the database or etcd cluster endpoint for HA. | _NULL_ |
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| `k3s_datastore_cafile` | Define the database TLS CA file. | _NULL_ |
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| `k3s_datastore_certfile` | Define the database TLS Cert file. | _NULL_ |
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| `k3s_datastore_keyfile` | Define the database TLS Key file. | _NULL_ |
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| `k3s_dqlite_datastore` | Use DQLite as the database backend for HA. (EXPERIMENTAL) | `false` |
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#### Important note about `k3s_release_version`
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@ -19,6 +19,16 @@
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- meta: flush_handlers
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- name: Ensure k3s killall script is present on all nodes
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template:
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src: k3s-killall.sh.j2
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dest: "/usr/local/bin/k3s-killall.sh"
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- name: Ensure k3s uninstall script is present on all nodes
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template:
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src: k3s-uninstall.sh.j2
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dest: "/usr/local/bin/k3s-uninstall.sh"
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- name: Ensure k3s is symlinked into the installation destinations
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file:
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src: "{{ k3s_install_dir }}/k3s-{{ k3s_release_version }}"
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@ -3,7 +3,7 @@
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- name: Check to see if k3s_cluster_state is a supported value
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assert:
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that:
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- k3s_cluster_state in ['installed', 'started', 'stopped', 'restarted', 'downloaded']
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- k3s_cluster_state in ['installed', 'started', 'stopped', 'restarted', 'downloaded', 'uninstall']
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fail_msg: "k3s_cluster_state not valid. Check README.md for details."
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success_msg: "k3s_cluster_state is valid."
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when: k3s_cluster_state is defined
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@ -0,0 +1,23 @@
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---
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- include_tasks: teardown/uninstall-docker-prerequisites-{{ ansible_os_family | lower }}.yml
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when: k3s_use_docker
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and ((k3s_control_workers)
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or (not k3s_control_workers and not k3s_control_node))
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and (k3s_non_root is not defined or not k3s_non_root)
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- import_tasks: teardown/uninstall-docker.yml
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when: k3s_use_docker
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and ((k3s_control_workers)
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or (not k3s_control_workers and not k3s_control_node))
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and ansible_distribution | replace(" ", "-") | lower not in ['amazon', 'suse', 'opensuse-leap']
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and (k3s_non_root is not defined or not k3s_non_root)
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- include_tasks: teardown/uninstall-docker-{{ ansible_distribution | replace(" ", "-") | lower }}.yml
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when: k3s_use_docker
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and ((k3s_control_workers)
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or (not k3s_control_workers and not k3s_control_node))
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and ansible_distribution | replace(" ", "-") | lower in ['amazon', 'suse', 'opensuse-leap']
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and (k3s_non_root is not defined or not k3s_non_root)
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- import_tasks: teardown/uninstall-k3s.yml
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@ -0,0 +1,5 @@
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---
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- name: Ensure docker is uninstalled using amazon-linux-extras
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command: amazon-linux-extras uninstall docker
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@ -0,0 +1,6 @@
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---
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- name: Ensure docker is installed using Zypper
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zypper:
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name: docker
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state: absent
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@ -0,0 +1,28 @@
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---
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- name: Ensure Docker repository is uninstalled
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apt_repository:
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filename: docker-ce
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repo: "deb https://download.docker.com/linux/{{ ansible_distribution | lower }} {{ ansible_distribution_release }} stable"
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update_cache: false
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state: absent
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- name: Ensure Docker APT key is uninstalled
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apt_key:
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url: https://download.docker.com/linux/{{ ansible_distribution | lower }}/gpg
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state: absent
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- name: Ensure Docker prerequisites are uninstalled
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apt:
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name: "{{ item }}"
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state: absent
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register: ensure_docker_prerequisites_uninstalled
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until: ensure_docker_prerequisites_uninstalled is succeeded
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retries: 3
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delay: 10
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loop:
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- apt-transport-https
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- ca-certificates
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- curl
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- "{{ 'gnupg2' if ansible_distribution == 'Debian' else 'gnupg-agent' }}"
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- software-properties-common
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@ -0,0 +1,38 @@
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---
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- name: Ensure Docker repository is removed
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yum_repository:
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name: docker-ce
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description: Docker CE Repository
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baseurl: https://download.docker.com/linux/{{ ansible_distribution | lower }}/{{ ansible_distribution_major_version }}/$basearch/stable
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gpgkey: https://download.docker.com/linux/{{ ansible_distribution | lower }}/gpg
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enabled: true
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gpgcheck: true
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state: absent
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when: ansible_distribution | lower not in ['amazon']
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- name: Ensure Docker repository is removed
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command: yum-config-manager disable docker-ce
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when: ansible_distribution | lower not in ['amazon']
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- name: Ensure Docker prerequisites are uninstalled
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yum:
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name:
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- yum-utils
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- device-mapper-persistent-data
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- lvm2
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state: absent
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register: ensure_docker_prerequisites_uninstalled
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until: ensure_docker_prerequisites_uninstalled is succeeded
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retries: 3
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delay: 10
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- name: Ensure python-dnf is uninstalled
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package:
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name: "{{ 'python-dnf' if ansible_python_version is version_compare('3.0.0', '<') else 'python3-dnf' }}"
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state: absent
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register: ensure_python_dnf_installed
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until: ensure_python_dnf_installed is succeeded
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retries: 3
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delay: 10
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when: ansible_pkg_mgr == 'dnf'
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@ -0,0 +1 @@
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---
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@ -0,0 +1,6 @@
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---
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- name: Ensure docker is uninstalled using Zypper
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zypper:
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name: docker
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state: absent
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@ -0,0 +1,13 @@
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---
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- name: Ensure docker is uninstalled
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package:
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name:
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- docker-ce
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- docker-ce-cli
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- containerd.io
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state: absent
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register: ensure_docker_uninstalled
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until: ensure_docker_uninstalled is succeeded
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retries: 3
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delay: 10
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@ -0,0 +1,13 @@
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---
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- name: "Run k3s-killall.sh"
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command: k3s-killall.sh
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- name: "Run k3s-uninstall.sh"
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command:
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cmd: k3s-uninstall.sh
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removes: /usr/local/bin/k3s-uninstall.sh
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- name: "Clean up Docker"
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command: docker system prune -a --force
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when: k3s_use_docker
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@ -0,0 +1,76 @@
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#!/bin/sh
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[ $(id -u) -eq 0 ] || exec sudo $0 $@
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for bin in /var/lib/rancher/k3s/data/**/bin/; do
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[ -d $bin ] && export PATH=$bin:$PATH
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done
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set -x
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for service in /etc/systemd/system/k3s*.service; do
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[ -s $service ] && systemctl stop $(basename $service)
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done
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for service in /etc/init.d/k3s*; do
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[ -x $service ] && $service stop
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done
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pschildren() {
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ps -e -o ppid= -o pid= | \
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sed -e 's/^\s*//g; s/\s\s*/\t/g;' | \
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grep -w "^$1" | \
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cut -f2
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}
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pstree() {
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for pid in $@; do
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echo $pid
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for child in $(pschildren $pid); do
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pstree $child
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done
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done
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}
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killtree() {
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kill -9 $(
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{ set +x; } 2>/dev/null;
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pstree $@;
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set -x;
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) 2>/dev/null
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}
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getshims() {
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lsof | sed -e 's/^[^0-9]*//g; s/ */\t/g' | grep -w 'k3s/data/[^/]*/bin/containerd-shim' | cut -f1 | sort -n -u
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}
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killtree $({ set +x; } 2>/dev/null; getshims; set -x)
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do_unmount() {
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{ set +x; } 2>/dev/null
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MOUNTS=
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while read ignore mount ignore; do
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MOUNTS="$mount\n$MOUNTS"
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done </proc/self/mounts
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MOUNTS=$(printf $MOUNTS | grep "^$1" | sort -r)
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if [ -n "${MOUNTS}" ]; then
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set -x
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umount ${MOUNTS}
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else
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set -x
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fi
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}
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do_unmount '/run/k3s'
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do_unmount '/var/lib/rancher/k3s'
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do_unmount '/var/lib/kubelet/pods'
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do_unmount '/run/netns/cni-'
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# Delete network interface(s) that match 'master cni0'
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ip link show 2>/dev/null | grep 'master cni0' | while read ignore iface ignore; do
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iface=${iface%%@*}
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[ -z "$iface" ] || ip link delete $iface
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done
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ip link delete cni0
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ip link delete flannel.1
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rm -rf /var/lib/cni/
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iptables-save | grep -v KUBE- | grep -v CNI- | iptables-restore
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@ -0,0 +1,39 @@
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#!/bin/sh
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set -x
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[ $(id -u) -eq 0 ] || exec sudo $0 $@
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/usr/local/bin/k3s-killall.sh
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if which systemctl; then
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systemctl disable k3s
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systemctl reset-failed k3s
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systemctl daemon-reload
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fi
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if which rc-update; then
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rc-update delete k3s default
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fi
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rm -f /etc/systemd/system/k3s.service
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rm -f /etc/systemd/system/k3s.service.env
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remove_uninstall() {
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rm -f /usr/local/bin/k3s-uninstall.sh
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}
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trap remove_uninstall EXIT
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if (ls /etc/systemd/system/k3s*.service || ls /etc/init.d/k3s*) >/dev/null 2>&1; then
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set +x; echo 'Additional k3s services installed, skipping uninstall of k3s'; set -x
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exit
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fi
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for cmd in kubectl crictl ctr; do
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if [ -L /usr/local/bin/$cmd ]; then
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rm -f /usr/local/bin/$cmd
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fi
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done
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rm -rf /etc/rancher/k3s
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rm -rf /var/lib/rancher/k3s
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rm -rf /var/lib/kubelet
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rm -f /usr/local/bin/k3s
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rm -f /usr/local/bin/k3s-killall.sh
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