调整network/cluster-addon安装流程

90.setup.yml

@@ -1,10 +1,10 @@
 # [optional] to synchronize time of nodes with 'chrony'
 - hosts: all
   roles:
-  - { role: chrony, when: "hostvars[groups.deploy[0]]['NTP_ENABLED'] == 'yes'" }
+  - { role: chrony, when: "groups['chrony']|length > 0" }
 
-# to create CA, kubeconfig, kube-proxy.kubeconfig etc. on 'deploy' node
-- hosts: deploy
+# to create CA, kubeconfig, kube-proxy.kubeconfig etc.
+- hosts: localhost
   roles:
   - deploy
 
@@ -12,17 +12,10 @@
 - hosts:
   - kube-master
   - kube-node
-  - deploy
   - etcd
-  - lb
   roles:
   - prepare
 
-# [optional] to install loadbalance service, only needed by multi-master cluster
-- hosts: lb
-  roles:
-  - lb
-
 # to install etcd cluster
 - hosts: etcd
   roles:
@@ -41,23 +34,20 @@
   roles:
   - kube-master
   - kube-node
-  # 
   tasks:
   - name: Making master nodes SchedulingDisabled
     shell: "{{ bin_dir }}/kubectl cordon {{ inventory_hostname }} "
-    delegate_to: "{{ groups.deploy[0] }}"
-    when: DEPLOY_MODE != "allinone"
+    when: "inventory_hostname not in groups['kube-node']" 
     ignore_errors: true
 
   - name: Setting master role name
     shell: "{{ bin_dir }}/kubectl label node {{ inventory_hostname }} kubernetes.io/role=master --overwrite"
     ignore_errors: true
-    delegate_to: "{{ groups.deploy[0] }}"
 
 # to set up 'kube-node' nodes
 - hosts: kube-node
   roles:
-  - { role: kube-node, when: "DEPLOY_MODE != 'allinone'" }
+  - { role: kube-node, when: "inventory_hostname not in groups['kube-master']" }
 
 # to install network plugin, only one can be choosen
 - hosts:
@@ -74,5 +64,4 @@
 - hosts:
   - kube-node
   roles:
-  - cluster-addon 
-
+  - cluster-addon

roles/calico/templates/calico-v3.2.yaml.j2

@@ -361,13 +361,6 @@ spec:
             # Choose which controllers to run.
             - name: ENABLED_CONTROLLERS
               value: policy,profile,workloadendpoint,node
-{% if NODE_WITH_MULTIPLE_NETWORKS == 'true' %}
-            # if hosts have multiple net interfaces, set following two ENVs
-            - name: KUBERNETES_SERVICE_HOST
-              value: "{{ MASTER_IP }}"
-            - name: KUBERNETES_SERVICE_PORT
-              value: "{{ KUBE_APISERVER.split(':')[2] }}"
-{% endif %}
           volumeMounts:
             # Mount in the etcd TLS secrets.
             - mountPath: /calico-secrets

roles/calico/templates/calico-v3.3.yaml.j2

@@ -370,13 +370,6 @@ spec:
             # Choose which controllers to run.
             - name: ENABLED_CONTROLLERS
               value: policy,namespace,serviceaccount,workloadendpoint,node
-{% if NODE_WITH_MULTIPLE_NETWORKS == 'true' %}
-            # if hosts have multiple net interfaces, set following two ENVs
-            - name: KUBERNETES_SERVICE_HOST
-              value: "{{ MASTER_IP }}"
-            - name: KUBERNETES_SERVICE_PORT
-              value: "{{ KUBE_APISERVER.split(':')[2] }}"
-{% endif %}
           volumeMounts:
             # Mount in the etcd TLS secrets.
             - mountPath: /calico-secrets

roles/calico/templates/calico-v3.4.yaml.j2

@@ -374,13 +374,6 @@ spec:
             # Choose which controllers to run.
             - name: ENABLED_CONTROLLERS
               value: policy,namespace,serviceaccount,workloadendpoint,node
-{% if NODE_WITH_MULTIPLE_NETWORKS == 'true' %}
-            # if hosts have multiple net interfaces, set following two ENVs
-            - name: KUBERNETES_SERVICE_HOST
-              value: "{{ MASTER_IP }}"
-            - name: KUBERNETES_SERVICE_PORT
-              value: "{{ KUBE_APISERVER.split(':')[2] }}"
-{% endif %}
           volumeMounts:
             # Mount in the etcd TLS secrets.
             - mountPath: /calico-secrets

roles/cilium/templates/cilium.yaml.j2

@@ -346,14 +346,6 @@ spec:
               key: tofqdns-pre-cache
               name: cilium-config
               optional: true
-{% if NODE_WITH_MULTIPLE_NETWORKS == 'true' %}
-        # if hosts have multiple net interfaces, set following two ENVs
-        - name: KUBERNETES_SERVICE_HOST
-          value: "{{ MASTER_IP }}"
-          #value: "{{ KUBE_APISERVER.split(':')[1].lstrip('/') }}"
-        - name: KUBERNETES_SERVICE_PORT
-          value: "{{ KUBE_APISERVER.split(':')[2] }}"
-{% endif %}
         image: docker.io/cilium/cilium:{{ cilium_ver }}
         imagePullPolicy: IfNotPresent
         lifecycle:
@@ -886,14 +878,6 @@ spec:
             fieldRef:
               apiVersion: v1
               fieldPath: metadata.uid
-{% if NODE_WITH_MULTIPLE_NETWORKS == 'true' %}
-        # if hosts have multiple net interfaces, set following two ENVs
-        - name: KUBERNETES_SERVICE_HOST
-          value: "{{ MASTER_IP }}"
-          #value: "{{ KUBE_APISERVER.split(':')[1].lstrip('/') }}"
-        - name: KUBERNETES_SERVICE_PORT
-          value: "{{ KUBE_APISERVER.split(':')[2] }}"
-{% endif %}
         image: docker.io/cilium/cilium-etcd-operator:v2.0.5
         imagePullPolicy: IfNotPresent
         name: cilium-etcd-operator

roles/cluster-addon/defaults/main.yml

@@ -1,4 +1,4 @@
-# dns 自动安装，可选"coredns"和“kubedns”
+# dns 自动安装，'dns_backend'可选"coredns"和“kubedns”
 dns_install: "yes"
 dns_backend: "coredns"
 kubednsVer: "1.14.13"

roles/cluster-addon/tasks/ingress.yml

@@ -17,8 +17,8 @@
           when: 'traefik_offline in image_info.stdout and CONTAINER_RUNTIME == "containerd"'
 
     - name: 创建 traefik部署
-      shell: "{{ bin_dir }}/kubectl apply -f {{ base_dir }}/manifests/ingress/traefik/traefik-ingress.yaml"
-      delegate_to: "{{ groups.deploy[0] }}"
+      shell: "{{ base_dir }}/bin/kubectl apply -f {{ base_dir }}/manifests/ingress/traefik/traefik-ingress.yaml"
+      connection: local
       run_once: true
   when: 'ingress_backend == "traefik"'
   ignore_errors: true
@@ -42,8 +42,8 @@
           when: 'nginx_ingress_offline in image_info.stdout and CONTAINER_RUNTIME == "containerd"'
 
     - name: 创建 nginx_ingress部署
-      shell: "{{ bin_dir }}/kubectl apply -f {{ base_dir }}/manifests/ingress/nginx-ingress/nginx-ingress.yaml"
-      delegate_to: "{{ groups.deploy[0] }}"
+      shell: "{{ base_dir }}/bin/kubectl apply -f {{ base_dir }}/manifests/ingress/nginx-ingress/nginx-ingress.yaml"
+      connection: local
       run_once: true
   when: 'ingress_backend == "nginx-ingress"'
   ignore_errors: true

roles/cluster-addon/tasks/main.yml

@@ -1,21 +1,18 @@
-- block:
-    - name: 在deploy 节点创建相关目录
-      file: path={{ item }} state=directory
-      with_items:
-      - /opt/kube/kube-system/kubedns
-      - /opt/kube/kube-system/coredns
-    
-    # DNS文件中部分参数根据hosts文件设置而定，因此需要用template模块替换参数
-    - name: 准备 DNS的部署文件
-      template: src={{ item }}.yaml.j2 dest=/opt/kube/kube-system/{{ item }}/{{ item }}.yaml
-      with_items:
-      - kubedns
-      - coredns
-    
-    - name: 获取所有已经创建的POD信息
-      command: "{{ bin_dir }}/kubectl get pod --all-namespaces"
-      register: pod_info
-  delegate_to: "{{ groups.deploy[0] }}"
+- name: 在 node 节点创建相关目录
+  file: path={{ item }} state=directory
+  with_items:
+  - /opt/kube/kube-system
+
+# DNS文件中部分参数根据hosts文件设置而定，因此需要用template模块替换参数
+- name: 准备 DNS的部署文件
+  template: src={{ item }}.yaml.j2 dest=/opt/kube/kube-system/{{ item }}.yaml
+  with_items:
+  - kubedns
+  - coredns
+
+- name: 获取所有已经创建的POD信息
+  command: "{{ bin_dir }}/kubectl get pod --all-namespaces"
+  register: pod_info
   run_once: true
 
 - name: 获取已下载离线镜像信息
@@ -43,9 +40,8 @@
           when: 'dns_offline in image_info.stdout and CONTAINER_RUNTIME == "containerd"'
     
     - name: 创建{{ dns_backend }}部署
-      shell: "{{ bin_dir }}/kubectl apply -f /opt/kube/kube-system/{{ dns_backend }}"
+      shell: "{{ bin_dir }}/kubectl apply -f /opt/kube/kube-system/{{ dns_backend }}.yaml"
       run_once: true
-      delegate_to: "{{ groups.deploy[0] }}"
   when: 
   - '"kube-dns" not in pod_info.stdout'
   - '"coredns" not in pod_info.stdout'
@@ -71,9 +67,9 @@
           when: 'metricsserver_offline in image_info.stdout and CONTAINER_RUNTIME == "containerd"'
     
     - name: 创建 metrics-server部署
-      shell: "{{ bin_dir }}/kubectl apply -f {{ base_dir }}/manifests/metrics-server"
-      delegate_to: "{{ groups.deploy[0] }}"
+      shell: "{{ base_dir }}/bin/kubectl apply -f {{ base_dir }}/manifests/metrics-server"
       run_once: true
+      connection: local
   when: '"metrics-server" not in pod_info.stdout and metricsserver_install == "yes"'
   ignore_errors: true
 
@@ -97,10 +93,10 @@
           when: 'dashboard_offline in image_info.stdout and CONTAINER_RUNTIME == "containerd"'
       
     - name: 创建 dashboard部署
-      shell: "{{ bin_dir }}/kubectl apply -f {{ base_dir }}/manifests/dashboard && \
-	      {{ bin_dir }}/kubectl apply -f {{ base_dir }}/manifests/heapster/heapster-only"
-      delegate_to: "{{ groups.deploy[0] }}"
+      shell: "{{ base_dir }}/bin/kubectl apply -f {{ base_dir }}/manifests/dashboard && \
+	      {{ base_dir }}/bin/kubectl apply -f {{ base_dir }}/manifests/heapster/heapster-only"
       run_once: true
+      connection: local
   when: '"kubernetes-dashboard" not in pod_info.stdout and dashboard_install == "yes"'
   ignore_errors: true
 
@@ -126,8 +122,8 @@
           when: 'heapster_offline in image_info.stdout and CONTAINER_RUNTIME == "containerd"'
       
     - name: 创建 heapster部署
-      shell: "{{ bin_dir }}/kubectl apply -f {{ base_dir }}/manifests/heapster/heapster.yaml"
-      delegate_to: "{{ groups.deploy[0] }}"
+      shell: "{{ base_dir }}/bin/kubectl apply -f {{ base_dir }}/manifests/heapster/heapster.yaml"
+      connection: local
       run_once: true
   when: '"heapster" not in pod_info.stdout and heapster_install == "yes"'
   ignore_errors: true
@@ -155,18 +151,10 @@
       with_items:
       - "metallb.yaml"
       - "{{ metallb_protocol }}.yaml"
-      delegate_to: "{{ groups.deploy[0] }}"
-      run_once: true
 
     - name: 创建 metallb controller 部署
-      shell: "{{ bin_dir }}/kubectl apply -f /opt/kube/kube-system/metallb.yaml"
-      delegate_to: "{{ groups.deploy[0] }}"
-      run_once: true
-
-    - name: 创建 metallb configmap
-      shell: "{{ bin_dir }}/kubectl apply -f /opt/kube/kube-system/{{ metallb_protocol }}.yaml"
-      delegate_to: "{{ groups.deploy[0] }}"
+      shell: "{{ bin_dir }}/kubectl apply -f /opt/kube/kube-system/metallb.yaml && \
+	      {{ bin_dir }}/kubectl apply -f /opt/kube/kube-system/{{ metallb_protocol }}.yaml"
       run_once: true
   when: '"metallb" not in pod_info.stdout and metallb_install == "yes"'
   ignore_errors: true
-

roles/cluster-addon/templates/metallb/metallb.yaml.j2

@@ -154,11 +154,6 @@ spec:
           valueFrom:
             fieldRef:
               fieldPath: spec.nodeName
-        - name: KUBERNETES_SERVICE_HOST
-          value: "{{ MASTER_IP }}"
-          #value: "{{ KUBE_APISERVER.split(':')[1].lstrip('/') }}"
-        - name: KUBERNETES_SERVICE_PORT
-          value: "{{ KUBE_APISERVER.split(':')[2] }}"
         ports:
         - name: monitoring
           containerPort: 7472

roles/flannel/defaults/main.yml

@@ -1,9 +1,5 @@
-# 部分flannel配置，详见roles/flannel/templates/kube-flannel.yaml.j2
+# 部分flannel配置，参考 docs/setup/network-plugin/flannel.md
 
-# 如果 node 节点有多块网卡，请设置 true
-# 另外发现设置为 true 时能够解决v1.10使用ipvs偶尔出现pod内‘dial tcp 10.68.0.1:443: i/o timeout’的 bug
-NODE_WITH_MULTIPLE_NETWORKS: "true"
- 
 # 设置flannel 后端
 #FLANNEL_BACKEND: "host-gw"
 FLANNEL_BACKEND: "vxlan"

roles/flannel/tasks/main.yml

@@ -1,11 +1,8 @@
-- block:
-    - name: 在deploy 节点创建相关目录
-      file: name=/opt/kube/kube-system/flannel state=directory
+- name: 创建相关目录
+  file: name=/opt/kube/kube-system state=directory
 
-    - name: 配置 flannel DaemonSet yaml文件
-      template: src=kube-flannel.yaml.j2 dest=/opt/kube/kube-system/flannel/kube-flannel.yaml
-  delegate_to: "{{ groups.deploy[0] }}"
-  run_once: true
+- name: 配置 flannel DaemonSet yaml文件
+  template: src=kube-flannel.yaml.j2 dest=/opt/kube/kube-system/flannel.yaml
     
 - name: 创建flannel cni 相关目录
   file: name={{ item }} state=directory
@@ -61,8 +58,7 @@
 
 # 只需单节点执行一次
 - name: 运行 flannel网络
-  shell: "{{ bin_dir }}/kubectl apply -f /opt/kube/kube-system/flannel/ && sleep 5"
-  delegate_to: "{{ groups.deploy[0] }}"
+  shell: "{{ bin_dir }}/kubectl apply -f /opt/kube/kube-system/flannel.yaml && sleep 5"
   run_once: true
 
 # 删除原有cni配置
@@ -74,8 +70,6 @@
   shell: "{{ bin_dir }}/kubectl get pod -n kube-system -o wide|grep 'flannel'|grep ' {{ inventory_hostname }} '|awk '{print $3}'"
   register: pod_status
   until: pod_status.stdout == "Running"
-  delegate_to: "{{ groups.deploy[0] }}"
   retries: 15
   delay: 8
   ignore_errors: true
-

roles/flannel/templates/kube-flannel.yaml.j2

@@ -141,14 +141,6 @@ spec:
           valueFrom:
             fieldRef:
               fieldPath: metadata.namespace
-{% if NODE_WITH_MULTIPLE_NETWORKS == 'true' %}
-        # if hosts have multiple net interfaces, set following two ENVs
-        - name: KUBERNETES_SERVICE_HOST
-          value: "{{ MASTER_IP }}"
-          #value: "{{ KUBE_APISERVER.split(':')[1].lstrip('/') }}"
-        - name: KUBERNETES_SERVICE_PORT
-          value: "{{ KUBE_APISERVER.split(':')[2] }}"
-{% endif %}
         volumeMounts:
         - name: run
           mountPath: /run

roles/kube-node/defaults/main.yml

@@ -24,3 +24,10 @@ HARD_EVICTION: "memory.available<200Mi,nodefs.available<10%"
 # "source": 基于请求源IP地址
 # "uri": 基于请求的URI
 BALANCE_ALG: "roundrobin"
+
+# 设置 APISERVER 地址
+KUBE_APISERVER: "{%- if groups['kube-master']|length > 1 -%} \
+                   https://127.0.0.1:6443 \
+                 {%- else -%} \
+                   https://{{ groups['kube-master'][0] }}:6443 \
+                 {%- endif -%}"

roles/kube-node/tasks/main.yml

@@ -1,15 +1,3 @@
-# 每个 node 节点运行 haproxy 连接到多个 apiserver
-- import_tasks: node_lb.yml
-  when: "inventory_hostname not in groups['kube-master']"
-
-- name: 替换 kubeconfig 的 apiserver 地址
-  lineinfile:
-    dest: /root/.kube/config
-    regexp: "^    server"
-    line: "    server: https://127.0.0.1:6443"
-  when: "inventory_hostname not in groups['kube-master']"
-
-# 创建kubelet,kube-proxy工作目录和cni配置目录
 - name: 创建kube-node 相关目录
   file: name={{ item }} state=directory
   with_items:
@@ -28,6 +16,17 @@
   - loopback
   tags: upgrade_k8s
 
+# 每个 node 节点运行 haproxy 连接到多个 apiserver
+- import_tasks: node_lb.yml
+  when: "inventory_hostname not in groups['kube-master']"
+
+- name: 替换 kubeconfig 的 apiserver 地址
+  lineinfile:
+    dest: /root/.kube/config
+    regexp: "^    server"
+    line: "    server: {{ KUBE_APISERVER }}"
+  when: "inventory_hostname not in groups['kube-master']"
+
 ##----------kubelet 配置部分--------------
 
 - name: 准备kubelet 证书签名请求
@@ -45,7 +44,7 @@
   shell: "{{ bin_dir }}/kubectl config set-cluster kubernetes \
         --certificate-authority={{ ca_dir }}/ca.pem \
         --embed-certs=true \
-        --server=https://127.0.0.1:6443 \
+        --server={{ KUBE_APISERVER }} \
 	--kubeconfig=/etc/kubernetes/kubelet.kubeconfig"
   when: "inventory_hostname not in groups['kube-master']"
 
@@ -95,7 +94,7 @@
   lineinfile:
     dest: /etc/kubernetes/kube-proxy.kubeconfig
     regexp: "^    server"
-    line: "    server: https://127.0.0.1:6443"
+    line: "    server: {{ KUBE_APISERVER }}"
   when: "inventory_hostname not in groups['kube-master']"
 
 - name: 替换 kube-proxy.kubeconfig 的 apiserver 地址

roles/kube-node/tasks/node_lb.yml

@@ -21,6 +21,11 @@
   shell: systemctl enable haproxy
   ignore_errors: true
 
-- name: 重启haproxy服务
-  shell: systemctl restart haproxy
+- name: 停止haproxy服务
+  shell: systemctl stop haproxy
+  tags: restart_lb
+
+- name: 开启haproxy服务
+  shell: systemctl start haproxy
+  when: "groups['kube-master']|length > 1"
   tags: restart_lb