232 lines
8.7 KiB
YAML
232 lines
8.7 KiB
YAML
---
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- name: kubeadm | Check if old apiserver cert exists on host
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stat:
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path: "{{ kube_cert_dir }}/apiserver.pem"
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register: old_apiserver_cert
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delegate_to: "{{ groups['kube-master'] | first }}"
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run_once: true
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- name: kubeadm | Migrate old certs if necessary
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import_tasks: kubeadm-migrate-certs.yml
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when: old_apiserver_cert.stat.exists
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- name: Install OIDC certificate
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copy:
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content: "{{ kube_oidc_ca_cert | b64decode }}"
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dest: "{{ kube_oidc_ca_file }}"
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owner: root
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group: root
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mode: "0644"
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when:
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- kube_oidc_auth
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- kube_oidc_ca_cert is defined
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- name: kubeadm | Check serviceaccount key
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stat:
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path: "{{ kube_cert_dir }}/sa.key"
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register: sa_key_before
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run_once: true
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- name: kubeadm | Check if kubeadm has already run
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stat:
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path: "/var/lib/kubelet/config.yaml"
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register: kubeadm_already_run
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- name: kubeadm | Delete old admin.conf
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file:
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path: "{{ kube_config_dir }}/admin.conf"
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state: absent
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when:
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- not kubeadm_already_run.stat.exists
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- name: kubeadm | Delete old static pods
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file:
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path: "{{ kube_config_dir }}/manifests/{{ item }}.manifest"
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state: absent
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with_items: ["kube-apiserver", "kube-controller-manager", "kube-scheduler", "kube-proxy"]
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when:
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- old_apiserver_cert.stat.exists
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- name: kubeadm | Forcefully delete old static pods
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shell: "set -o pipefail && docker ps -f name=k8s_{{ item }} -q | xargs --no-run-if-empty docker rm -f"
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args:
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executable: /bin/bash
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with_items: ["kube-apiserver", "kube-controller-manager", "kube-scheduler"]
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when:
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- old_apiserver_cert.stat.exists
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- name: kubeadm | aggregate all SANs
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set_fact:
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apiserver_sans: "{{ (sans_base + groups['kube-master'] + sans_lb + sans_lb_ip + sans_supp + sans_access_ip + sans_ip + sans_address + sans_override + sans_hostname + sans_fqdn) | unique }}"
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vars:
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sans_base:
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- "kubernetes"
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- "kubernetes.default"
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- "kubernetes.default.svc"
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- "kubernetes.default.svc.{{ dns_domain }}"
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- "{{ kube_apiserver_ip }}"
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- "localhost"
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- "127.0.0.1"
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sans_lb: "{{ [apiserver_loadbalancer_domain_name] if apiserver_loadbalancer_domain_name is defined else [] }}"
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sans_lb_ip: "{{ [loadbalancer_apiserver.address] if loadbalancer_apiserver is defined and loadbalancer_apiserver.address is defined else [] }}"
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sans_supp: "{{ supplementary_addresses_in_ssl_keys if supplementary_addresses_in_ssl_keys is defined else [] }}"
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sans_access_ip: "{{ groups['kube-master'] | map('extract', hostvars, 'access_ip') | list | select('defined') | list }}"
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sans_ip: "{{ groups['kube-master'] | map('extract', hostvars, 'ip') | list | select('defined') | list }}"
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sans_address: "{{ groups['kube-master'] | map('extract', hostvars, ['ansible_default_ipv4', 'address']) | list | select('defined') | list }}"
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sans_override: "{{ [kube_override_hostname] if kube_override_hostname else [] }}"
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sans_hostname: "{{ groups['kube-master'] | map('extract', hostvars, ['ansible_hostname']) | list | select('defined') | list }}"
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sans_fqdn: "{{ groups['kube-master'] | map('extract', hostvars, ['ansible_fqdn']) | list | select('defined') | list }}"
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tags: facts
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- name: Create audit-policy directory
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file:
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path: "{{ audit_policy_file | dirname }}"
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state: directory
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when: kubernetes_audit|default(false) or kubernetes_audit_webhook|default(false)
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- name: Write api audit policy yaml
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template:
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src: apiserver-audit-policy.yaml.j2
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dest: "{{ audit_policy_file }}"
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when: kubernetes_audit|default(false) or kubernetes_audit_webhook|default(false)
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- name: Write api audit webhook config yaml
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template:
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src: apiserver-audit-webhook-config.yaml.j2
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dest: "{{ audit_webhook_config_file }}"
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when: kubernetes_audit_webhook|default(false)
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# Nginx LB(default), If kubeadm_config_api_fqdn is defined, use other LB by kubeadm controlPlaneEndpoint.
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- name: set kubeadm_config_api_fqdn define
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set_fact:
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kubeadm_config_api_fqdn: "{{ apiserver_loadbalancer_domain_name|default('lb-apiserver.kubernetes.local') }}"
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when: loadbalancer_apiserver is defined
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- name: kubeadm | set kubeadm version
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import_tasks: kubeadm-version.yml
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- name: kubeadm | Certificate management with kubeadm
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import_tasks: kubeadm-certificate.yml
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when:
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- not upgrade_cluster_setup
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- kubeadm_already_run.stat.exists
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- name: kubeadm | Check if apiserver.crt contains all needed SANs
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command: openssl x509 -noout -in "{{ kube_cert_dir }}/apiserver.crt" -check{{ item|ipaddr|ternary('ip','host') }} "{{ item }}"
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with_items: "{{ apiserver_sans }}"
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register: apiserver_sans_check
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changed_when: "'does match certificate' not in apiserver_sans_check.stdout"
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when:
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- inventory_hostname == groups['kube-master']|first
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- kubeadm_already_run.stat.exists
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- name: kubeadm | regenerate apiserver cert 1/2
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file:
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state: absent
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path: "{{ kube_cert_dir }}/{{ item }}"
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with_items:
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- apiserver.crt
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- apiserver.key
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when:
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- inventory_hostname == groups['kube-master']|first
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- kubeadm_already_run.stat.exists
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- apiserver_sans_check.changed or force_certificate_regeneration
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- name: kubeadm | regenerate apiserver cert 2/2
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command: >-
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{{ bin_dir }}/kubeadm
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init phase certs apiserver
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--config={{ kube_config_dir }}/kubeadm-config.yaml
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when:
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- inventory_hostname == groups['kube-master']|first
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- kubeadm_already_run.stat.exists
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- apiserver_sans_check.changed or force_certificate_regeneration
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- name: kubeadm | Initialize first master
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command: >-
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timeout -k 300s 300s
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{{ bin_dir }}/kubeadm init
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--config={{ kube_config_dir }}/kubeadm-config.yaml
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--ignore-preflight-errors=all
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--skip-phases={{ kubeadm_init_phases_skip | join(',') }}
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--upload-certs
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register: kubeadm_init
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# Retry is because upload config sometimes fails
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retries: 3
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until: kubeadm_init is succeeded or "field is immutable" in kubeadm_init.stderr
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when: inventory_hostname == groups['kube-master']|first and not kubeadm_already_run.stat.exists
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failed_when: kubeadm_init.rc != 0 and "field is immutable" not in kubeadm_init.stderr
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environment:
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PATH: "{{ bin_dir }}:{{ ansible_env.PATH }}"
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notify: Master | restart kubelet
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- name: set kubeadm certificate key
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set_fact:
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kubeadm_certificate_key: "{{ item | regex_search('--certificate-key ([^ ]+)','\\1') | first }}"
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with_items: "{{ hostvars[groups['kube-master'][0]]['kubeadm_init'].stdout_lines | default([]) }}"
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when:
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- kubeadm_certificate_key is not defined
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- (item | trim) is match('.*--certificate-key.*')
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- name: Create hardcoded kubeadm token for joining nodes with 24h expiration (if defined)
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shell: >-
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{{ bin_dir }}/kubeadm --kubeconfig /etc/kubernetes/admin.conf token delete {{ kubeadm_token }} || :;
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{{ bin_dir }}/kubeadm --kubeconfig /etc/kubernetes/admin.conf token create {{ kubeadm_token }}
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changed_when: false
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when:
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- inventory_hostname == groups['kube-master']|first
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- kubeadm_token is defined
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- kubeadm_refresh_token
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tags:
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- kubeadm_token
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- name: Create kubeadm token for joining nodes with 24h expiration (default)
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command: "{{ bin_dir }}/kubeadm --kubeconfig /etc/kubernetes/admin.conf token create"
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changed_when: false
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register: temp_token
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retries: 5
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delay: 5
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until: temp_token is succeeded
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delegate_to: "{{ groups['kube-master'] | first }}"
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when: kubeadm_token is not defined
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tags:
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- kubeadm_token
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- name: Set kubeadm_token
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set_fact:
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kubeadm_token: "{{ temp_token.stdout }}"
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when: temp_token.stdout is defined
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tags:
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- kubeadm_token
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- name: kubeadm | Join other masters
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include_tasks: kubeadm-secondary.yml
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- name: kubeadm | upgrade kubernetes cluster
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include_tasks: kubeadm-upgrade.yml
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when:
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- upgrade_cluster_setup
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- kubeadm_already_run.stat.exists
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- name: kubeadm | Check serviceaccount key again
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stat:
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path: "{{ kube_cert_dir }}/sa.key"
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register: sa_key_after
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run_once: true
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- name: kubeadm | Set secret_changed if service account key was updated
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command: /bin/true
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notify: Master | set secret_changed
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when: sa_key_before.stat.checksum|default("") != sa_key_after.stat.checksum
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- name: kubeadm | cleanup old certs if necessary
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import_tasks: kubeadm-cleanup-old-certs.yml
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when:
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- old_apiserver_cert.stat.exists
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# FIXME(mattymo): from docs: If you don't want to taint your control-plane node, set this field to an empty slice, i.e. `taints: {}` in the YAML file.
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- name: kubeadm | Remove taint for master with node role
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command: "{{ bin_dir }}/kubectl --kubeconfig {{ kube_config_dir }}/admin.conf taint node {{ inventory_hostname }} node-role.kubernetes.io/master:NoSchedule- node-role.kubernetes.io/control-plane:NoSchedule-"
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delegate_to: "{{ groups['kube-master'] | first }}"
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when: inventory_hostname in groups['kube-node']
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failed_when: false
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