更新kubedns文档

ruanjiangjx · Apr 26, 2018 · 0b3c1b6 · 0b3c1b6
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diff --git a/docs/guide/kubedns.md b/docs/guide/kubedns.md
@@ -17,6 +17,20 @@ $ kubectl create -f /etc/ansible/manifests/coredns
 ```
 
 + 集群 pod默认继承 node的dns 解析，修改 kubelet服务启动参数 --resolv-conf=""，可以更改这个特性，详见 kubelet 启动参数
++ 如果你使用`calico`网络组件，通过命令`ansible-playbook 90.setup.yml`安装完集群后，直接安装dns组件，可能会出现如下BUG，分析是因为calico分配pod地址时候会从网段的第一个地址（网络地址）开始，详见提交的 [ISSUE #1710](https://github.com/projectcalico/calico/issues/1710)，临时解决办法为手动删除POD，重新创建后获取后面的IP地址
+
+```
+# BUG出现现象
+$ kubectl get pod --all-namespaces -o wide
+NAMESPACE     NAME                                       READY     STATUS             RESTARTS   AGE       IP              NODE
+default       busy-5cc98488d4-s894w                      1/1       Running            0          28m       172.20.24.193   192.168.97.24
+kube-system   calico-kube-controllers-6597d9c664-nq9hn   1/1       Running            0          1h        192.168.97.24   192.168.97.24
+kube-system   calico-node-f8gnf                          2/2       Running            0          1h        192.168.97.24   192.168.97.24
+kube-system   kube-dns-69bf9d5cc9-c68mw                  0/3       CrashLoopBackOff   27         31m       172.20.24.192   192.168.97.24
+
+# 解决办法，删除pod，自动重建
+$ kubectl delete pod -n kube-system kube-dns-69bf9d5cc9-c68mw
+```
 
 ### 验证 dns服务
 

diff --git a/manifests/kubedns/kubedns.yaml b/manifests/kubedns/kubedns.yaml
@@ -79,8 +79,8 @@ spec:
           optional: true
       containers:
       - name: kubedns
-        #image: gcr.io/google_containers/k8s-dns-kube-dns-amd64:1.14.8
-        image: mirrorgooglecontainers/k8s-dns-kube-dns-amd64:1.14.8
+        #image: gcr.io/google_containers/k8s-dns-kube-dns-amd64:1.14.9
+        image: mirrorgooglecontainers/k8s-dns-kube-dns-amd64:1.14.9
         resources:
           # TODO: Set memory limits when we've profiled the container for large
           # clusters, then set request = limit to keep this container in
@@ -131,8 +131,8 @@ spec:
         - name: kube-dns-config
           mountPath: /kube-dns-config
       - name: dnsmasq
-        #image: gcr.io/google_containers/k8s-dns-dnsmasq-nanny-amd64:1.14.8
-        image: mirrorgooglecontainers/k8s-dns-dnsmasq-nanny-amd64:1.14.8
+        #image: gcr.io/google_containers/k8s-dns-dnsmasq-nanny-amd64:1.14.9
+        image: mirrorgooglecontainers/k8s-dns-dnsmasq-nanny-amd64:1.14.9
         livenessProbe:
           httpGet:
             path: /healthcheck/dnsmasq
@@ -170,8 +170,8 @@ spec:
         - name: kube-dns-config
           mountPath: /etc/k8s/dns/dnsmasq-nanny
       - name: sidecar
-        #image: gcr.io/google_containers/k8s-dns-sidecar-amd64:1.14.8
-        image: mirrorgooglecontainers/k8s-dns-sidecar-amd64:1.14.8
+        #image: gcr.io/google_containers/k8s-dns-sidecar-amd64:1.14.9
+        image: mirrorgooglecontainers/k8s-dns-sidecar-amd64:1.14.9
         livenessProbe:
           httpGet:
             path: /metrics