intégration seed mode

inventory/group_vars/all.yml

@@ -1,5 +1,5 @@
 # Valid bootstrap options (required): ubuntu, coreos, centos, none
-bootstrap_os: none
+bootstrap_os: ubuntu
 
 #Directory where etcd data stored
 etcd_data_dir: /var/lib/etcd

inventory/group_vars/k8s-cluster.yml

@@ -69,7 +69,14 @@ kube_users:
 
 # Choose network plugin (calico, weave or flannel)
 # Can also be set to 'cloud', which lets the cloud provider setup appropriate routing
-kube_network_plugin: calico
+kube_network_plugin: weave
+
+# weave's network password for encryption
+# if null then no network encryption
+weave_password: ~t94S:mweJN}32-K
+
+# Set true for use weave's seed mode
+mode_seed: false
 
 # Enable kubernetes network policies
 enable_network_policy: false

inventory/group_vars/k8s-fede.yml

@@ -0,0 +1,7 @@
+# This file is use to save seed and peers values for weave's seed mode
+# This two variable are automatically changed by the weave's role
+# For reset values :
+# seed: unset
+# peers: unset
+seed: unset
+peers: unset

inventory/inventory.example

@@ -29,3 +29,7 @@
 # [k8s-cluster:children]
 # kube-node
 # kube-master
+
+# ## For weave in seed mode
+# [k8s-fede:children]
+# k8s-cluster

roles/download/defaults/main.yml

@@ -25,7 +25,7 @@ etcd_version: v3.0.17
 calico_version: "v1.1.3"
 calico_cni_version: "v1.7.0"
 calico_policy_version: "v0.5.4"
-weave_version: 2.1.1
+weave_version: 2.0.1
 flannel_version: v0.6.2
 pod_infra_version: 3.0
 

roles/network_plugin/weave/defaults/main.yml

@@ -4,3 +4,6 @@ weave_memory_limit: 400M
 weave_cpu_limit: 30m
 weave_memory_requests: 64M
 weave_cpu_requests: 10m
+
+# this variable is use in seed mode
+weave_ip_current_cluster: '{% for host in groups["k8s-cluster"] %}{{ hostvars[host]["ansible_default_ipv4"]["address"] }}{% if not loop.last %} {% endif %}{% endfor %}'

roles/network_plugin/weave/tasks/main.yml

@@ -1,6 +1,9 @@
 ---
 - include: pre-upgrade.yml
 
+- include: seed.yml
+  when: mode_seed == true
+
 - name: Weave | enable br_netfilter module
   modprobe:
     name: br_netfilter

roles/network_plugin/weave/tasks/seed.yml

@@ -0,0 +1,49 @@
+- name: Weave seed | Set seed first time
+  set_fact:
+    weave_seed: '{% for host in groups["k8s-cluster"] %}{{ hostvars[host]["ansible_default_ipv4"]["macaddress"] }}{% if not loop.last %},{% endif %}{% endfor %}'
+  when: "seed == 'unset'"
+  run_once: true
+  tags: confweave
+
+- name: Weave seed | Set seed
+  set_fact:
+    weave_seed: '{{ seed }}'
+  when: "seed != 'unset'"
+  run_once: true
+  tags: confweave
+
+- name: Weave seed | Set peers fist time
+  set_fact:
+    weave_peers: '{{ weave_ip_current_cluster }}'
+  when: "peers == 'unset'"
+  run_once: true
+  tags: confweave
+
+- name: Weave seed | Set peers with existing peers
+  set_fact:
+    weave_peers: '{{ peers }}{% if weave_ip_current_cluster not in peers %} {{ weave_ip_current_cluster }}{% endif %}'
+  when: "peers != 'unset'"
+  run_once: true
+  tags: confweave
+
+- name: Weave seed | Save seed
+  lineinfile:
+    dest: "./inventory/group_vars/k8s-fede.yml"
+    state: present
+    regexp: '^seed:'
+    line: 'seed: {{ weave_seed }}'
+  become_user: $USER
+  delegate_to: 127.0.0.1
+  run_once: true
+  tags: confweave
+
+- name: Weave seed | Save peers
+  lineinfile:
+    dest: "./inventory/group_vars/k8s-fede.yml"
+    state: present
+    regexp: '^peers:'
+    line: 'peers: {{ weave_peers }}'
+  become_user: $USER
+  delegate_to: 127.0.0.1
+  run_once: true
+  tags: confweave

roles/network_plugin/weave/templates/weave-net.yml.j2

@@ -1,82 +1,117 @@
 ---
-apiVersion: extensions/v1beta1
+apiVersion: v1
+kind: List
+items:
+  - apiVersion: v1
+    kind: ServiceAccount
+    metadata:
+      name: weave-net
+      labels:
+        name: weave-net
+      namespace: {{ system_namespace }}
+  - apiVersion: rbac.authorization.k8s.io/v1beta1
+    kind: ClusterRole
+    metadata:
+      name: weave-net
+      labels:
+        name: weave-net
+    rules:
+      - apiGroups:
+          - ''
+        resources:
+          - pods
+          - namespaces
+          - nodes
+        verbs:
+          - get
+          - list
+          - watch
+      - apiGroups:
+          - extensions
+        resources:
+          - networkpolicies
+        verbs:
+          - get
+          - list
+          - watch
+  - apiVersion: rbac.authorization.k8s.io/v1beta1
+    kind: ClusterRoleBinding
+    metadata:
+      name: weave-net
+      labels:
+        name: weave-net
+    roleRef:
+      kind: ClusterRole
+      name: weave-net
+      apiGroup: rbac.authorization.k8s.io
+    subjects:
+      - kind: ServiceAccount
+        name: weave-net
+        namespace: kube-system
+  - apiVersion: extensions/v1beta1
     kind: DaemonSet
     metadata:
       name: weave-net
-  namespace: {{ system_namespace }}
       labels:
+        name: weave-net
         version: {{ weave_version }}
+      namespace: {{ system_namespace }}
     spec:
       template:
         metadata:
           labels:
             name: weave-net
-      annotations:
-        scheduler.alpha.kubernetes.io/tolerations: |
-          [
-            {
-              "key": "dedicated",
-              "operator": "Equal",
-              "value": "master",
-              "effect": "NoSchedule"
-            }
-          ]
         spec:
-      hostNetwork: true
-      hostPID: true
           containers:
             - name: weave
-          image: {{ weave_kube_image_repo }}:{{ weave_kube_image_tag }}
-          imagePullPolicy: Always
+{% if mode_seed == true %}
+              command: ["/bin/sh","-c","export EXTRA_ARGS=--name=$(cat /sys/class/net/{{ ansible_default_ipv4['interface'] }}/address) && /home/weave/launch.sh"]
+{% else %}
               command: 
                 - /home/weave/launch.sh
+{% endif %}
               env:
+                - name: HOSTNAME
+                  valueFrom:
+                    fieldRef:
+                      apiVersion: v1
+                      fieldPath: spec.nodeName
                 - name: IPALLOC_RANGE
                   value: {{ kube_pods_subnet }}
-{% if weave_checkpoint_disable is defined %}
-            - name: CHECKPOINT_DISABLE
-              value: {{ weave_checkpoint_disable }}
-{% endif %}
-{% if weave_expect_npc is defined %}
-            - name: EXPECT_NPC
-              value: {{ weave_expect_npc }}
-{% endif %}
-{% if weave_kube_peers is defined %}
+{% if mode_seed == true %}
                 - name: KUBE_PEERS
-              value: {{ weave_kube_peers }}
-{% endif %}
-{% if weave_ipalloc_init is defined %}
+                  value: {{ weave_peers }}
                 - name: IPALLOC_INIT
-              value: {{ weave_ipalloc_init }}
-{% endif %}
-{% if weave_expose_ip is defined %}
-            - name: WEAVE_EXPOSE_IP
-              value: {{ weave_expose_ip }}
+                  value: seed={{ weave_seed }}
 {% endif %}
+                - name: WEAVE_PASSWORD
+                  value: {{ weave_password }}
+              image: {{ weave_kube_image_repo }}:{{ weave_kube_image_tag }}
+              imagePullPolicy: Always
               livenessProbe:
-            initialDelaySeconds: 60
                 httpGet:
                   host: 127.0.0.1
                   path: /status
                   port: 6784
+                initialDelaySeconds: 30
+              resources:
+                requests:
+                  cpu: 10m
               securityContext:
                 privileged: true
               volumeMounts:
                 - name: weavedb
                   mountPath: /weavedb
                 - name: cni-bin
-              mountPath: /opt
+                  mountPath: /host/opt
                 - name: cni-bin2
-              mountPath: /host_home
+                  mountPath: /host/home
                 - name: cni-conf
-              mountPath: /etc
-          resources:
-            requests:
-              cpu: {{ weave_cpu_requests }}
-              memory: {{ weave_memory_requests }}
-            limits:
-              cpu: {{ weave_cpu_limit }}
-              memory: {{ weave_memory_limit }}
+                  mountPath: /host/etc
+                - name: dbus
+                  mountPath: /host/var/lib/dbus
+                - name: lib-modules
+                  mountPath: /lib/modules
             - name: weave-npc
               image: {{ weave_npc_image_repo }}:{{ weave_npc_image_tag }}
               imagePullPolicy: Always
@@ -89,10 +124,19 @@ spec:
                   memory: {{ weave_memory_limit }}
               securityContext:
                 privileged: true
+          hostNetwork: true
+          hostPID: true
           restartPolicy: Always
+          securityContext:
+            seLinuxOptions: {}
+          serviceAccountName: weave-net
+          tolerations:
+            - effect: NoSchedule
+              operator: Exists
           volumes:
             - name: weavedb
-          emptyDir: {}
+              hostPath:
+                path: /var/lib/weave
             - name: cni-bin
               hostPath:
                 path: /opt
@@ -102,3 +146,9 @@ spec:
             - name: cni-conf
               hostPath:
                 path: /etc
+            - name: dbus
+              hostPath:
+                path: /var/lib/dbus
+            - name: lib-modules
+              hostPath:
+                path: /lib/modules

roles/uploads/defaults/main.yml

@@ -5,7 +5,7 @@ local_release_dir: /tmp
 etcd_version: v3.0.17
 calico_version: v0.23.0
 calico_cni_version: v1.5.6
-weave_version: v2.1.1
+weave_version: v2.0.1
 
 # Download URL's
 etcd_download_url: "https://github.com/coreos/etcd/releases/download/{{ etcd_version }}/etcd-{{ etcd_version }}-linux-amd64.tar.gz"