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---
- name: Install OIDC certificate
copy:
content: "{{ kube_oidc_ca_cert | b64decode }}"
dest: "{{ kube_oidc_ca_file }}"
owner: root
group: root
mode: "0644"
when:
- kube_oidc_auth
- kube_oidc_ca_cert is defined
- name: kubeadm | Check if kubeadm has already run
stat:
path: "/var/lib/kubelet/config.yaml"
get_attributes: no
get_checksum: no
get_mime: no
register: kubeadm_already_run
- name: kubeadm | Backup kubeadm certs / kubeconfig
import_tasks: kubeadm-backup.yml
when:
- kubeadm_already_run.stat.exists
- name: kubeadm | aggregate all SANs
set_fact:
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 }}"
vars:
sans_base:
- "kubernetes"
- "kubernetes.default"
- "kubernetes.default.svc"
- "kubernetes.default.svc.{{ dns_domain }}"
- "{{ kube_apiserver_ip }}"
- "localhost"
- "127.0.0.1"
sans_lb: "{{ [apiserver_loadbalancer_domain_name] if apiserver_loadbalancer_domain_name is defined else [] }}"
sans_lb_ip: "{{ [loadbalancer_apiserver.address] if loadbalancer_apiserver is defined and loadbalancer_apiserver.address is defined else [] }}"
sans_supp: "{{ supplementary_addresses_in_ssl_keys if supplementary_addresses_in_ssl_keys is defined else [] }}"
sans_access_ip: "{{ groups['kube-master'] | map('extract', hostvars, 'access_ip') | list | select('defined') | list }}"
sans_ip: "{{ groups['kube-master'] | map('extract', hostvars, 'ip') | list | select('defined') | list }}"
sans_address: "{{ groups['kube-master'] | map('extract', hostvars, ['ansible_default_ipv4', 'address']) | list | select('defined') | list }}"
sans_override: "{{ [kube_override_hostname] if kube_override_hostname else [] }}"
sans_hostname: "{{ groups['kube-master'] | map('extract', hostvars, ['ansible_hostname']) | list | select('defined') | list }}"
sans_fqdn: "{{ groups['kube-master'] | map('extract', hostvars, ['ansible_fqdn']) | list | select('defined') | list }}"
tags: facts
- name: Create audit-policy directory
file:
path: "{{ audit_policy_file | dirname }}"
state: directory
when: kubernetes_audit|default(false) or kubernetes_audit_webhook|default(false)
- name: Write api audit policy yaml
template:
src: apiserver-audit-policy.yaml.j2
dest: "{{ audit_policy_file }}"
when: kubernetes_audit|default(false) or kubernetes_audit_webhook|default(false)
- name: Write api audit webhook config yaml
template:
src: apiserver-audit-webhook-config.yaml.j2
dest: "{{ audit_webhook_config_file }}"
when: kubernetes_audit_webhook|default(false)
# Nginx LB(default), If kubeadm_config_api_fqdn is defined, use other LB by kubeadm controlPlaneEndpoint.
- name: set kubeadm_config_api_fqdn define
set_fact:
kubeadm_config_api_fqdn: "{{ apiserver_loadbalancer_domain_name|default('lb-apiserver.kubernetes.local') }}"
when: loadbalancer_apiserver is defined
- name: Set kubeadm api version to v1beta2
set_fact:
kubeadmConfig_api_version: v1beta2
- name: kubeadm | Create kubeadm config
template:
src: "kubeadm-config.{{ kubeadmConfig_api_version }}.yaml.j2"
dest: "{{ kube_config_dir }}/kubeadm-config.yaml"
mode: 0640
- name: kubeadm | Check if apiserver.crt contains all needed SANs
shell: |
set -o pipefail
for IP in {{ apiserver_ips | join(' ') }}; do
openssl x509 -noout -in "{{ kube_cert_dir }}/apiserver.crt" -checkip $IP | grep -q 'does match certificate' || echo 'NEED-RENEW'
done
for HOST in {{ apiserver_hosts | join(' ') }}; do
openssl x509 -noout -in "{{ kube_cert_dir }}/apiserver.crt" -checkhost $HOST | grep -q 'does match certificate' || echo 'NEED-RENEW'
done
vars:
apiserver_ips: "{{ apiserver_sans|map('ipaddr')|reject('equalto', False)|list }}"
apiserver_hosts: "{{ apiserver_sans|difference(apiserver_ips) }}"
args:
executable: /bin/bash
register: apiserver_sans_check
changed_when: "'NEED-RENEW' in apiserver_sans_check.stdout"
when:
- kubeadm_already_run.stat.exists
- name: kubeadm | regenerate apiserver cert 1/2
file:
state: absent
path: "{{ kube_cert_dir }}/{{ item }}"
with_items:
- apiserver.crt
- apiserver.key
when:
- kubeadm_already_run.stat.exists
- apiserver_sans_check.changed
- name: kubeadm | regenerate apiserver cert 2/2
command: >-
{{ bin_dir }}/kubeadm
init phase certs apiserver
--config={{ kube_config_dir }}/kubeadm-config.yaml
when:
- kubeadm_already_run.stat.exists
- apiserver_sans_check.changed
- name: kubeadm | Initialize first master
command: >-
timeout -k 300s 300s
{{ bin_dir }}/kubeadm init
--config={{ kube_config_dir }}/kubeadm-config.yaml
--ignore-preflight-errors=all
--skip-phases={{ kubeadm_init_phases_skip | join(',') }}
--upload-certs
register: kubeadm_init
# Retry is because upload config sometimes fails
retries: 3
until: kubeadm_init is succeeded or "field is immutable" in kubeadm_init.stderr
when: inventory_hostname == groups['kube-master']|first and not kubeadm_already_run.stat.exists
failed_when: kubeadm_init.rc != 0 and "field is immutable" not in kubeadm_init.stderr
environment:
PATH: "{{ bin_dir }}:{{ ansible_env.PATH }}"
notify: Master | restart kubelet
- name: set kubeadm certificate key
set_fact:
kubeadm_certificate_key: "{{ item | regex_search('--certificate-key ([^ ]+)','\\1') | first }}"
with_items: "{{ hostvars[groups['kube-master'][0]]['kubeadm_init'].stdout_lines | default([]) }}"
when:
- kubeadm_certificate_key is not defined
- (item | trim) is match('.*--certificate-key.*')
- name: Create hardcoded kubeadm token for joining nodes with 24h expiration (if defined)
shell: >-
{{ bin_dir }}/kubeadm --kubeconfig /etc/kubernetes/admin.conf token delete {{ kubeadm_token }} || :;
{{ bin_dir }}/kubeadm --kubeconfig /etc/kubernetes/admin.conf token create {{ kubeadm_token }}
changed_when: false
when:
- inventory_hostname == groups['kube-master']|first
- kubeadm_token is defined
- kubeadm_refresh_token
tags:
- kubeadm_token
- name: Create kubeadm token for joining nodes with 24h expiration (default)
command: "{{ bin_dir }}/kubeadm --kubeconfig /etc/kubernetes/admin.conf token create"
changed_when: false
register: temp_token
retries: 5
delay: 5
until: temp_token is succeeded
delegate_to: "{{ groups['kube-master'] | first }}"
when: kubeadm_token is not defined
tags:
- kubeadm_token
- name: Set kubeadm_token
set_fact:
kubeadm_token: "{{ temp_token.stdout }}"
when: temp_token.stdout is defined
tags:
- kubeadm_token
- name: kubeadm | Join other masters
include_tasks: kubeadm-secondary.yml
- name: kubeadm | upgrade kubernetes cluster
include_tasks: kubeadm-upgrade.yml
when:
- upgrade_cluster_setup
- kubeadm_already_run.stat.exists
# 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.
- name: kubeadm | Remove taint for master with node role
command: "{{ bin_dir }}/kubectl --kubeconfig {{ kube_config_dir }}/admin.conf taint node {{ inventory_hostname }} node-role.kubernetes.io/master:NoSchedule-"
delegate_to: "{{ groups['kube-master'] | first }}"
when: inventory_hostname in groups['kube-node']
failed_when: false
|
