diff options
Diffstat (limited to 'roles/kubernetes/kubeadm/master/tasks/primary-master.yml')
-rw-r--r-- | roles/kubernetes/kubeadm/master/tasks/primary-master.yml | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/roles/kubernetes/kubeadm/master/tasks/primary-master.yml b/roles/kubernetes/kubeadm/master/tasks/primary-master.yml new file mode 100644 index 00000000..115c8616 --- /dev/null +++ b/roles/kubernetes/kubeadm/master/tasks/primary-master.yml @@ -0,0 +1,109 @@ +--- +- name: check if kubeconfig kubelet.conf already exists + stat: + path: /etc/kubernetes/kubelet.conf + register: kubeconfig_kubelet_stats + +- name: generate kubeadm.config + template: + src: kubeadm.config.j2 + dest: /etc/kubernetes/kubeadm.config + register: kubeadm_config + +### cluster not yet initialized + +- name: create new cluster + when: not kubeconfig_kubelet_stats.stat.exists + block: + + #### kubeadm wants token to come from --config if --config is used + #### i think this is stupid -> TODO: send bug report + # - name: generate bootstrap token for new cluster + # command: kubeadm token generate + # changed_when: False + # check_mode: no + # register: kubeadm_token_generate + + - name: initialize kubernetes master and store log + block: + - name: initialize kubernetes master + command: "kubeadm init --config /etc/kubernetes/kubeadm.config --node-name {{ inventory_hostname }}{% if kubernetes_cri_socket is defined %} --cri-socket {{ kubernetes_cri_socket }}{% endif %}{% if kubernetes_network_plugin == 'kube-router' %} --skip-phases addon/kube-proxy{% endif %} --skip-token-print" + # command: "kubeadm init --config /etc/kubernetes/kubeadm.config{% if kubernetes_cri_socket is defined %} --cri-socket {{ kubernetes_cri_socket }}{% endif %}{% if kubernetes_network_plugin == 'kube-router' %} --skip-phases addon/kube-proxy{% endif %} --token '{{ kubeadm_token_generate.stdout }}' --token-ttl 42m --skip-token-print" + args: + creates: /etc/kubernetes/pki/ca.crt + register: kubeadm_init + + always: + - name: dump output of kubeadm init to log file + when: kubeadm_init.changed + copy: + content: "{{ kubeadm_init.stdout }}\n" + dest: /etc/kubernetes/kubeadm-init.log + + - name: create bootstrap token for existing cluster + command: kubeadm token create --ttl 42m + check_mode: no + register: kubeadm_token_generate + + +### cluster is already initialized but config has changed + +- name: upgrade cluster config + when: kubeconfig_kubelet_stats.stat.exists and kubeadm_config is changed + block: + + - name: fail for cluster upgrades + fail: + msg: "upgrading cluster config is currently not supported!" + + +### cluster is already initialized + +- name: prepare cluster for new nodes + when: kubeconfig_kubelet_stats.stat.exists and kubeadm_config is not changed + block: + + - name: fetch list of current nodes + command: kubectl --kubeconfig /etc/kubernetes/admin.conf get nodes -o name + changed_when: False + check_mode: no + register: kubectl_node_list + + - name: save list of current nodes + set_fact: + kubernetes_current_nodes: "{{ kubectl_node_list.stdout_lines | map('replace', 'node/', '') | list }}" + + - name: create bootstrap token for existing cluster + when: "groups['_kubernetes_nodes_'] | difference(kubernetes_current_nodes) | length > 0" + command: kubeadm token create --ttl 42m + check_mode: no + register: kubeadm_token_create + + +## calculate certificate digest + +- name: install openssl + apt: + name: openssl + state: present + +- name: get ca certificate digest + shell: "set -o pipefail && openssl x509 -pubkey -in /etc/kubernetes/pki/ca.crt | openssl rsa -pubin -outform der 2>/dev/null | openssl dgst -sha256 -hex | sed 's/^.* //'" + args: + executable: /bin/bash + check_mode: no + register: kube_ca_openssl + changed_when: False + +- name: set variables needed by kubernetes/nodes to join the cluster + set_fact: + kube_bootstrap_token: "{% if kubeadm_token_generate.stdout is defined %}{{ kubeadm_token_generate.stdout }}{% elif kubeadm_token_create.stdout is defined %}{{ kubeadm_token_create.stdout }}{% endif %}" + kube_bootstrap_ca_cert_hash: "sha256:{{ kube_ca_openssl.stdout }}" + delegate_to: "{{ item }}" + delegate_facts: True + loop: "{{ groups['_kubernetes_nodes_'] }}" + +## Network Plugin + +# - name: install network plugin +# include_tasks: "net_{{ kubernetes_network_plugin }}.yml" |