Fixup deploy of kubeadm etcd for Kubernetes v1.15.0 (#4952)

* Fixup deploy of kubeadm etcd for Kubernetes v1.15.0

Change-Id: If42c2c75c4d278ba9475ebf76c243f3e6ee4d02e

* undo renaming cloud config file

Change-Id: Iafbd27c3887d6a2a6d0819c711f150ecf70c515d

roles/kubernetes/kubeadm/defaults/main.yml

@@ -1,6 +1,9 @@
 ---
 # discovery_timeout modifies the discovery timeout
-discovery_timeout: 5m0s
+# This value must be smaller than kubeadm_join_timeout
+discovery_timeout: 60s
+kubeadm_join_timeout: 120s
+
 # Optionally remove kube_proxy installed by kubeadm
 kube_proxy_remove: false
 

roles/kubernetes/kubeadm/tasks/main.yml

@@ -10,15 +10,24 @@
   tags:
     - facts
 
-
 - name: Check if kubelet.conf exists
   stat:
     path: "{{ kube_config_dir }}/kubelet.conf"
   register: kubelet_conf
 
+- name: Check if kubeadm CA cert is accessible
+  stat:
+    path: "{{ kube_cert_dir }}/ca.crt"
+  register: kubeadm_ca_stat
+  delegate_to: "{{ groups['kube-master'][0] }}"
+  run_once: true
+
 - name: Calculate kubeadm CA cert hash
   shell: openssl x509 -pubkey -in {{ kube_cert_dir }}/ca.crt | openssl rsa -pubin -outform der 2>/dev/null | openssl dgst -sha256 -hex | sed 's/^.* //'
   register: kubeadm_ca_hash
+  when:
+    - kubeadm_ca_stat.stat is defined
+    - kubeadm_ca_stat.stat.exists
   delegate_to: "{{ groups['kube-master'][0] }}"
   run_once: true
 
@@ -58,23 +67,21 @@
 
     - name: Join to cluster
       command: >-
+        timeout -k {{ kubeadm_join_timeout }} {{ kubeadm_join_timeout }}
         {{ bin_dir }}/kubeadm join
         --config {{ kube_config_dir }}/kubeadm-client.conf
         --ignore-preflight-errors=DirAvailable--etc-kubernetes-manifests
       register: kubeadm_join
-      async: 120
-      poll: 15
 
   rescue:
 
     - name: Join to cluster with ignores
       command: >-
+        timeout -k {{ kubeadm_join_timeout }} {{ kubeadm_join_timeout }}
         {{ bin_dir }}/kubeadm join
         --config {{ kube_config_dir }}/kubeadm-client.conf
         --ignore-preflight-errors=all
       register: kubeadm_join
-      async: 180
-      poll: 15
 
   always:
 
@@ -85,12 +92,6 @@
           Joined with warnings
           {{ kubeadm_join.stderr_lines }}
 
-- name: Wait for kubelet bootstrap to create config
-  wait_for:
-    path: "{{ kube_config_dir }}/kubelet.conf"
-    delay: 1
-    timeout: 60
-
 - name: Update server field in kubelet kubeconfig
   lineinfile:
     dest: "{{ kube_config_dir }}/kubelet.conf"

roles/kubernetes/kubeadm/templates/kubeadm-client.conf.v1beta1.j2

@@ -9,8 +9,12 @@ discovery:
     apiServerEndpoint: {{ kubeadm_discovery_address }}
 {% endif %}
     token: {{ kubeadm_token }}
+{% if kubeadm_ca_hash.stdout is defined %}
     caCertHashes:
     - sha256:{{ kubeadm_ca_hash.stdout }}
+{% else %}
+    unsafeSkipCAVerification: true
+{% endif %}
   timeout: {{ discovery_timeout }}
   tlsBootstrapToken: {{ kubeadm_token }}
 caCertPath: {{ kube_cert_dir }}/ca.crt

roles/kubernetes/master/tasks/kubeadm-setup.yml

@@ -103,7 +103,7 @@
 
 - name: kubeadm | Initialize first master
   command: >-
-    timeout -k 600s 600s
+    timeout -k 300s 300s
     {{ bin_dir }}/kubeadm init
     --config={{ kube_config_dir }}/kubeadm-config.yaml
     --ignore-preflight-errors=all

roles/kubernetes/master/tasks/kubeadm-upgrade.yml

@@ -29,6 +29,7 @@
     --allow-experimental-upgrades
     --allow-release-candidate-upgrades
     --etcd-upgrade=false
+    --force
   register: kubeadm_upgrade
   when: inventory_hostname != groups['kube-master']|first
   failed_when:

roles/kubernetes/master/templates/kubeadm-config.v1beta1.yaml.j2

@@ -69,6 +69,12 @@ etcd:
       - {{ san }}
 {% endfor %}
 {% endif %}
+{% if dns_mode in ['coredns', 'coredns_dual'] %}
+dns:
+  type: CoreDNS
+  imageRepository: {{ coredns_image_repo | regex_replace('/coredns$','') }}
+  imageTag: {{ coredns_image_tag }}
+{% endif %}
 networking:
   dnsDomain: {{ dns_domain }}
   serviceSubnet: {{ kube_service_addresses }}

roles/kubernetes/master/templates/kubeadm-config.v1beta2.yaml.j2

@@ -27,6 +27,7 @@ apiVersion: kubeadm.k8s.io/v1beta2
 kind: ClusterConfiguration
 clusterName: {{ cluster_name }}
 etcd:
+{% if not etcd_kubeadm_enabled %}
   external:
       endpoints:
 {% for endpoint in etcd_access_addresses.split(',') %}
@@ -35,6 +36,53 @@ etcd:
       caFile: {{ etcd_cert_dir }}/{{ kube_etcd_cacert_file }}
       certFile: {{ etcd_cert_dir }}/{{ kube_etcd_cert_file }}
       keyFile: {{ etcd_cert_dir }}/{{ kube_etcd_key_file }}
+{% elif etcd_kubeadm_enabled %}
+  local:
+    imageRepository: "{{ etcd_image_repo | regex_replace("/etcd$","") }}"
+    imageTag: "{{ etcd_image_tag }}"
+    dataDir: "/var/lib/etcd"
+    extraArgs:
+      metrics: {{ etcd_metrics }}
+      election-timeout: "{{ etcd_election_timeout }}"
+      heartbeat-interval: "{{ etcd_heartbeat_interval }}"
+      auto-compaction-retention: "{{ etcd_compaction_retention }}"
+{% if etcd_snapshot_count is defined %}
+      snapshot-count: "{{ etcd_snapshot_count }}"
+{% endif %}
+{% if etcd_quota_backend_bytes is defined %}
+      quota-backend-bytes: "{{ etcd_quota_backend_bytes }}"
+{% endif %}
+{% if etcd_log_package_levels is defined %}
+      log-package_levels: "{{ etcd_log_package_levels }}"
+{% endif %}
+{% for key, value in etcd_extra_vars.items() %}
+      {{ key }}: "{{ value }}"
+{% endfor %}
+{% if host_architecture != "amd64" -%}
+      etcd-unsupported-arch: {{host_architecture}}
+{% endif %}
+    serverCertSANs:
+{% for san in etcd_cert_alt_names %}
+      - {{ san }}
+{% endfor %}
+{% for san in etcd_cert_alt_ips %}
+      - {{ san }}
+{% endfor %}
+    peerCertSANs:
+{% for san in etcd_cert_alt_names %}
+      - {{ san }}
+{% endfor %}
+{% for san in etcd_cert_alt_ips %}
+      - {{ san }}
+{% endfor %}
+{% endif %}
+
+{% if dns_mode in ['coredns', 'coredns_dual'] %}
+dns:
+  type: CoreDNS
+  imageRepository: {{ coredns_image_repo | regex_replace('/coredns$','') }}
+  imageTag: {{ coredns_image_tag }}
+{% endif %}
 networking:
   dnsDomain: {{ dns_domain }}
   serviceSubnet: {{ kube_service_addresses }}

roles/kubernetes/preinstall/tasks/0070-system-packages.yml

@@ -44,7 +44,7 @@
 
 - name: Update common_required_pkgs with ipvsadm when kube_proxy_mode is ipvs
   set_fact:
-    common_required_pkgs: "{{ common_required_pkgs|default([]) + ['ipvsadm'] }}"
+    common_required_pkgs: "{{ common_required_pkgs|default([]) + ['ipvsadm', 'ipset'] }}"
   when: kube_proxy_mode == 'ipvs'
 
 - name: Install packages requirements