k8s中flannel:镜像下载不了
重新部署一套K8S集群时，由于K8S需要扁平化的网络，所以当执行下面的
root@master ~]# kubectl apply -f kube-flannel.yml
会开始下载镜像，然后去启动，结果等了几分钟，一直没有好
[root@k8s-master ~]# kubectl get pod -n kube-system
NAME READY STATUS RESTARTS AGE
coredns-58cc8c89f4-9gn5g 0/1 Pending 0 27m
coredns-58cc8c89f4-xxzx7 0/1 Pending 0 27m
etcd-k8s-master 1/1 Running 1 26m
kube-apiserver-k8s-master 1/1 Running 1 26m
kube-controller-manager-k8s-master 1/1 Running 1 26m
kube-flannel-ds-amd64-2dqlf 0/1 Init:ImagePullBackOff 0 11m
kube-proxy-rn98b 1/1 Running 1 27m
kube-scheduler-k8s-master 1/1 Running 1 26m
[root@k8s-master ~]# kubectl get pod -n kube-system
去查询pod
[root@k8s-master ~]# kubectl describe pod kube-flannel-ds-amd64-2dqlf -n kube-system
Name: kube-flannel-ds-amd64-2dqlf
Namespace: kube-system
Priority: 0
Node: k8s-master/192.168.180.130
Start Time: Thu, 19 Dec 2019 22:36:13 +0800
Labels: app=flannel
controller-revision-hash=67f65bfbc7
pod-template-generation=1
tier=node
Annotations: <none>
Status: Pending
IP: 192.168.180.130
IPs:
IP: 192.168.180.130
Controlled By: DaemonSet/kube-flannel-ds-amd64
Init Containers:
install-cni:
Container ID:
Image: quay.io/coreos/flannel:v0.11.0-amd64
Image ID:
Port: <none>
Host Port: <none>
Command:
cp
Args:
-f
/etc/kube-flannel/cni-conf.json
/etc/cni/net.d/10-flannel.conflist
State: Waiting
Reason: ImagePullBackOff
Ready: False
Restart Count: 0
Environment: <none>
Mounts:
/etc/cni/net.d from cni (rw)
/etc/kube-flannel/ from flannel-cfg (rw)
/var/run/secrets/kubernetes.io/serviceaccount from flannel-token-r52cd (ro)
Containers:
kube-flannel:
Container ID:
Image: quay.io/coreos/flannel:v0.11.0-amd64
Image ID:
Port: <none>
Host Port: <none>
Command:
/opt/bin/flanneld
Args:
--ip-masq
--kube-subnet-mgr
State: Waiting
Reason: PodInitializing
Ready: False
Restart Count: 0
Limits:
cpu: 100m
memory: 50Mi
Requests:
cpu: 100m
memory: 50Mi
Environment:
POD_NAME: kube-flannel-ds-amd64-2dqlf (v1:metadata.name)
POD_NAMESPACE: kube-system (v1:metadata.namespace)
Mounts:
/etc/kube-flannel/ from flannel-cfg (rw)
/run/flannel from run (rw)
/var/run/secrets/kubernetes.io/serviceaccount from flannel-token-r52cd (ro)
Conditions:
Type Status
Initialized False
Ready False
ContainersReady False
PodScheduled True
Volumes:
run:
Type: HostPath (bare host directory volume)
Path: /run/flannel
HostPathType:
cni:
Type: HostPath (bare host directory volume)
Path: /etc/cni/net.d
HostPathType:
flannel-cfg:
Type: ConfigMap (a volume populated by a ConfigMap)
Name: kube-flannel-cfg
Optional: false
flannel-token-r52cd:
Type: Secret (a volume populated by a Secret)
SecretName: flannel-token-r52cd
Optional: false
QoS Class: Burstable
Node-Selectors: <none>
Tolerations: :NoSchedule
node.kubernetes.io/disk-pressure:NoSchedule
node.kubernetes.io/memory-pressure:NoSchedule
node.kubernetes.io/network-unavailable:NoSchedule
node.kubernetes.io/not-ready:NoExecute
node.kubernetes.io/pid-pressure:NoSchedule
node.kubernetes.io/unreachable:NoExecute
node.kubernetes.io/unschedulable:NoSchedule
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal Scheduled <unknown> default-scheduler Successfully assigned kube-system/kube-flannel-ds-amd64-2dqlf to k8s-master
Warning Failed 5m29s kubelet, k8s-master Failed to pull image "quay.io/coreos/flannel:v0.11.0-amd64": rpc error: code = Unknown desc = context canceled
Warning Failed 4m21s (x2 over 5m2s) kubelet, k8s-master Failed to pull image "quay.io/coreos/flannel:v0.11.0-amd64": rpc error: code = Unknown desc = Error response from daemon: Get https://quay.io/v2/: net/http: request canceled (Client.Timeout exceeded while awaiting headers)
Normal Pulling 3m31s (x4 over 7m5s) kubelet, k8s-master Pulling image "quay.io/coreos/flannel:v0.11.0-amd64"
Warning Failed 3m18s (x4 over 5m29s) kubelet, k8s-master Error: ErrImagePull
Warning Failed 3m18s kubelet, k8s-master Failed to pull image "quay.io/coreos/flannel:v0.11.0-amd64": rpc error: code = Unknown desc = Error response from daemon: Get https://quay.io/v2/coreos/flannel/manifests/v0.11.0-amd64: Get https://quay.io/v2/auth?scope=repository%3Acoreos%2Fflannel%3Apull&service=quay.io: net/http: TLS handshake timeout
Normal BackOff 3m5s (x6 over 5m29s) kubelet, k8s-master Back-off pulling image "quay.io/coreos/flannel:v0.11.0-amd64"
Warning Failed 2m2s (x11 over 5m29s) kubelet, k8s-master Error: ImagePullBackOff
发现时镜像拉取失败的原因，有可能时网络原因导致的，之前都没有遇到过
kube-flannel-ds-amd64-2dqlf 0/1 Init:ImagePullBackOff 0 11m
这个状态，应该时yaml中，有一个InitC，初始化的容器，便去查看一番
所以只能把别的集群中的镜像导出一份，在导入
[root@k8s-master mnt]# docker load -i flannel.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@k8s-master mnt]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
registry.aliyuncs.com/google_containers/kube-apiserver v1.16.0 b305571ca60a 3 months ago 217MB
registry.aliyuncs.com/google_containers/kube-proxy v1.16.0 c21b0c7400f9 3 months ago 86.1MB
registry.aliyuncs.com/google_containers/kube-controller-manager v1.16.0 06a629a7e51c 3 months ago 163MB
registry.aliyuncs.com/google_containers/kube-scheduler v1.16.0 301ddc62b80b 3 months ago 87.3MB
registry.aliyuncs.com/google_containers/etcd 3.3.15-0 b2756210eeab 3 months ago 247MB
registry.aliyuncs.com/google_containers/coredns 1.6.2 bf261d157914 4 months ago 44.1MB
quay.io/coreos/flannel v0.11.0-amd64 ff281650a721 10 months ago 52.6MB
registry.aliyuncs.com/google_containers/pause 3.1 da86e6ba6ca1 24 months ago 742kB
[root@k8s-master mnt]# cd
[root@k8s-master ~]# kubectl get node
NAME STATUS ROLES AGE VERSION
k8s-master Ready master 54m v1.16.1
k8s-node01 NotReady <none> 15m v1.16.1
k8s-node02 Ready <none> 17m v1.16.1
[root@k8s-master ~]# kubectl get pod -n kube-system
NAME READY STATUS RESTARTS AGE
coredns-58cc8c89f4-9gn5g 1/1 Running 0 54m
coredns-58cc8c89f4-xxzx7 1/1 Running 0 54m
etcd-k8s-master 1/1 Running 1 53m
kube-apiserver-k8s-master 1/1 Running 1 53m
kube-controller-manager-k8s-master 1/1 Running 2 53m
kube-flannel-ds-amd64-4bc88 1/1 Running 0 17m
kube-flannel-ds-amd64-lzwd6 1/1 Running 0 19m
kube-flannel-ds-amd64-vw4vn 1/1 Running 0 15m
kube-proxy-bs8sd 1/1 Running 1 15m
kube-proxy-nfvtt 1/1 Running 0 17m
kube-proxy-rn98b 1/1 Running 1 54m
kube-scheduler-k8s-master 1/1 Running 1 53m
[root@k8s-master ~]# kubectl get node
NAME STATUS ROLES AGE VERSION
k8s-master Ready master 54m v1.16.1
k8s-node01 Ready <none> 15m v1.16.1
k8s-node02 Ready <none> 17m v1.16.1
稍等一会，就可以了。由于百度云连接经常失效，有需要镜像的，可以和我联系
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