k8s报错：pod状态为pending，coredns的状态是pending的解决办法

2023-10-15 01:14| 来源: 网络整理| 查看: 265

错误一：coredns的状态是pending 在这里插入图片描述原因1：master上的flannel镜像拉取失败，导致获取不到解析的IP 解决方法：

[root@master ~]# kubectl delete -f kube-flannel.yml #先删除安装的CNI插件 [root@master ~]# docker load --input flannel-0.11.0-amd64.tar #导入镜像 [root@master ~]# kubectl apply -f kube-flannel.yml #再次安装 [root@master ~]# kubectl get pods -n kube-system -o wide

在这里插入图片描述原因2：没有本地解析，所以coredns才是pending

[root@master ~]# cat /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6

解决方法：本地解析

[root@master ~]# cat /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 192.168.13.141 master 192.168.13.142 node1 192.168.13.143 node2

错误二：集群测试pod状态pending 在这里插入图片描述 [root@master ~]# kubectl get pods -n kube-system -o wide 查看状态原因：发现两个node节点上的flannel镜像自动拉取失败解决方法：我们需要去手动导入镜像

[root@node1 ~]# docker load --input flannel-0.11.0-amd64.tar 7bff100f35cb: Loading layer [==================================================>] 4.672MB/4.672MB 5d3f68f6da8f: Loading layer [==================================================>] 9.526MB/9.526MB 9b48060f404d: Loading layer [==================================================>] 5.912MB/5.912MB 3f3a4ce2b719: Loading layer [==================================================>] 35.25MB/35.25MB 9ce0bb155166: Loading layer [==================================================>] 5.12kB/5.12kB Loaded image: quay.io/coreos/flannel:v0.11.0-amd64 [root@node2 ~]# docker load --input flannel-0.11.0-amd64.tar 7bff100f35cb: Loading layer [==================================================>] 4.672MB/4.672MB 5d3f68f6da8f: Loading layer [==================================================>] 9.526MB/9.526MB 9b48060f404d: Loading layer [==================================================>] 5.912MB/5.912MB 3f3a4ce2b719: Loading layer [==================================================>] 35.25MB/35.25MB 9ce0bb155166: Loading layer [==================================================>] 5.12kB/5.12kB Loaded image: quay.io/coreos/flannel:v0.11.0-amd64 然后删除pod重新进行集群测试 [root@master ~]# kubectl get deployment NAME READY UP-TO-DATE AVAILABLE AGE nginx 0/1 1 0 16m [root@master ~]# kubectl delete deployment nginx #删除 deployment.extensions "nginx" deleted [root@master ~]# kubectl get pods -n kube-system -o wide NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES coredns-8686dcc4fd-p56rf 1/1 Running 0 36m 10.244.0.3 master coredns-8686dcc4fd-qnhjv 1/1 Running 0 36m 10.244.0.2 master etcd-master 1/1 Running 0 35m 192.168.13.141 master kube-apiserver-master 1/1 Running 0 35m 192.168.13.141 master kube-controller-manager-master 1/1 Running 0 35m 192.168.13.141 master kube-flannel-ds-amd64-j9mlk 1/1 Running 0 25m 192.168.13.141 master kube-flannel-ds-amd64-p89mh 1/1 Running 0 19m 192.168.13.143 node2 kube-flannel-ds-amd64-rsln6 1/1 Running 0 19m 192.168.13.142 node1 kube-proxy-2pfmm 1/1 Running 0 36m 192.168.13.141 master kube-proxy-tmd2c 1/1 Running 0 19m 192.168.13.142 node1 kube-proxy-tvn54 1/1 Running 0 19m 192.168.13.143 node2 kube-scheduler-master 1/1 Running 0 35m 192.168.13.141 master

在这里插入图片描述

[root@master ~]# kubectl get pod,svc NAME READY STATUS RESTARTS AGE pod/nginx-5f965696dd-2wcfn 1/1 Running 0 2m52s NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE service/kubernetes ClusterIP 10.1.0.1 443/TCP 39m service/nginx NodePort 10.1.113.89 80:32439/TCP 21m 此时pod状态就是Running了

在这里插入图片描述

[root@master ~]# curl 192.168.13.142:32439 #访问页面也是能成功 Welcome to nginx! body { width: 35em; margin: 0 auto; font-family: Tahoma, Verdana, Arial, sans-serif; } Welcome to nginx! If you see this page, the nginx web server is successfully installed and working. Further configuration is required. For online documentation and support please refer to nginx.org. Commercial support is available at nginx.com. Thank you for using nginx.

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