Merge pull request #2250 from woopstar/weave-mtu-patch

Added option to set MTU on Weave

inventory/group_vars/k8s-cluster.yml

@@ -83,6 +83,9 @@ weave_mode_seed: false
 weave_seed: uninitialized
 weave_peers: uninitialized
 
+# Set the MTU of Weave (default 1376, Jumbo Frames: 8916)
+weave_mtu: 1376
+
 # Enable kubernetes network policies
 enable_network_policy: false
 

roles/download/defaults/main.yml

@@ -38,7 +38,7 @@ flannel_version: "v0.9.1"
 flannel_cni_version: "v0.3.0"
 istio_version: "0.2.6"
 vault_version: 0.8.1
-weave_version: 2.1.3
+weave_version: 2.2.0
 pod_infra_version: 3.0
 contiv_version: 1.1.7
 

roles/network_plugin/weave/defaults/main.yml

@@ -12,5 +12,8 @@ weave_cpu_requests: 10m
 weave_seed: uninitialized
 weave_peers: uninitialized
 
+# Set the MTU of Weave (default 1376, Jumbo Frames: 8916)
+weave_mtu: 1376
+
 # this variable is use in seed mode
 weave_ip_current_cluster: "{% for host in groups['k8s-cluster'] %}{{ hostvars[host]['ip'] | default(hostvars[host]['ansible_default_ipv4']['address']) }}{% if not loop.last %} {% endif %}{% endfor %}"

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

@@ -34,6 +34,37 @@ items:
           - get
           - list
           - watch
+      - apiGroups:
+          - 'networking.k8s.io'
+        resources:
+          - networkpolicies
+        verbs:
+          - get
+          - list
+          - watch
+  - apiVersion: rbac.authorization.k8s.io/v1beta1
+    kind: Role
+    metadata:
+      name: weave-net
+      namespace: kube-system
+      labels:
+        name: weave-net
+    rules:
+      - apiGroups:
+          - ''
+        resources:
+          - configmaps
+        resourceNames:
+          - weave-net
+        verbs:
+          - get
+          - update
+      - apiGroups:
+          - ''
+        resources:
+          - configmaps
+        verbs:
+          - create
   - apiVersion: rbac.authorization.k8s.io/v1
     kind: ClusterRoleBinding
     metadata:
@@ -78,6 +109,8 @@ items:
                     fieldRef:
                       apiVersion: v1
                       fieldPath: spec.nodeName
+                - name: WEAVE_MTU
+                  value: "{{ weave_mtu }}"
                 - name: IPALLOC_RANGE
                   value: {{ kube_pods_subnet }}
 {% if weave_mode_seed == true %}
@@ -164,4 +197,3 @@ items:
         rollingUpdate:
           maxUnavailable: {{ serial | default('20%') }}
         type: RollingUpdate
-