# 多打了一个i导致的报错[root@master01 yaml]# cat 01-pod.yaml apiVersion: v1
kind: Pod
metadata:name: likexy
spec:contaiiners:-name: aaa
image: registry.cn-hangzhou.aliyuncs.com/yinzhengjie-k8s/apps:v1
[root@master01 yaml]# kubectl apply -f 01-pod.yaml error:error validating "01-pod.yaml":error validating data:[ValidationError(Pod.spec): unknown field "contaiiners" in io.k8s.api.core.v1.PodSpec,ValidationError(Pod.spec): missing required field "containers" in io.k8s.api.core.v1.PodSpec]; if you choose to ignore these errors, turn validation off with --validate=false
图1 报错详情
02 重复创建资源
[root@master01 yaml]# kubectl apply -f 02-network.yaml
The Pod "likexy" is invalid: spec: Forbidden: pod updates may not change fields other than `spec.containers[*].image`, `spec.initContainers[*].image`, `spec.activeDeadlineSeconds`, `spec.tolerations`(only additions to existing tolerations) or `spec.terminationGracePeriodSeconds`(allow it to be set to 1if it was previously negative)
core.PodSpec{
Volumes: {{Name: "kube-api-access-cm7wz", VolumeSource: {Projected: &{Sources: {{ServiceAccountToken: &{ExpirationSeconds: 3607, Path: "token"}}, {ConfigMap: &{LocalObjectReference: {Name: "kube-root-ca.crt"}, Items: {{Key: "ca.crt", Path: "ca.crt"}}}}, {DownwardAPI: &{Items: {{Path: "namespace", FieldRef: &{APIVersion: "v1", FieldPath: "metadata.namespace"}}}}}}, DefaultMode: &420}}}},
InitContainers: nil,
Containers: []core.Container{{
- Name: "b",
+ Name: "aaa",
Image: "registry.cn-hangzhou.aliyuncs.com/yinzhengjie-k8s/apps:v1",
Command: nil,
... // 4 identical fields
Env: nil,
Resources: {},
- VolumeMounts: nil,
+ VolumeMounts: []core.VolumeMount{
+ {
+ Name: "kube-api-access-cm7wz",
+ ReadOnly: true,
+ MountPath: "/var/run/secrets/kubernetes.io/serviceaccount",
+ },
+ },
VolumeDevices: nil,
LivenessProbe: nil,
... // 10 identical fields
},
},
EphemeralContainers: nil,
RestartPolicy: "Always",
... // 5 identical fields
AutomountServiceAccountToken: nil,
NodeName: "node03",
SecurityContext: &core.PodSecurityContext{
- HostNetwork: true,
+ HostNetwork: false,
HostPID: false,
HostIPC: false,
... // 11 identical fields
},
ImagePullSecrets: nil,
Hostname: "",
... // 16 identical fields
}
图2 重复创建名字为likexy的报错
# 解决方案# 删除并重新创建 Pod# 修改Yaml文件
03 容器的镜像名字错误
[root@master01 yaml]# cat 02-network.yaml
apiVersion: v1
kind: Pod
metadata:
name: likeixy
spec:
hostNetwork: true
containers:
- name: b
# image: registry.cn-hangzhou.aliyuncs.com/yinzhengjie-k8s/apps:v1
image: registry.cn-hangzhou.aliyuncs.com/yinzhengjie-k8s/apps:v100
[root@master01 yaml]# kubectl apply -f 02-network.yaml
pod/likeixy configured
[root@master01 yaml]# kubectl get pods -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
likeixy 0/1 ImagePullBackOff 0(20s ago) 8m43s 172.2.25.52 node01 <none><none>
# 镜像名字错误，导致状态为ImagePullBackOff：镜像拉取失败
图3 镜像名写错了
[root@master01 yaml]# kubectl describe pod likeixy
Name: likeixy
Namespace: default
Priority: 0
Node: node01/172.2.25.52
Start Time: Tue, 20 May 202516:00:31 +0800
Labels: <none>
Annotations: <none>
Status: Running
IP: 172.2.25.52
IPs:
IP: 172.2.25.52
Containers:
b:
Container ID: docker://390c2930bab1c54b8275a7889226a73267951fefb78ade253b07cd32f93e1ad9
Image: registry.cn-hangzhou.aliyuncs.com/yinzhengjie-k8s/apps:v100
Image ID: docker-pullable://registry.cn-hangzhou.aliyuncs.com/yinzhengjie-k8s/apps@sha256:3bee216f250cfd2dbda1744d6849e27118845b8f4d55dda3ca3c6c1227cc2e5c
Port: <none>
Host Port: <none>
State: Waiting
Reason: ImagePullBackOff
Last State: Terminated
Reason: Completed
Exit Code: 0
Started: Tue, 20 May 202516:00:32 +0800
Finished: Tue, 20 May 202516:08:54 +0800
Ready: False
Restart Count: 0
Environment: <none>
Mounts:
/var/run/secrets/kubernetes.io/serviceaccount from kube-api-access-k6xv2 (ro)
Conditions:
Type Status
Initialized True
Ready False
ContainersReady False
PodScheduled True
Volumes:
kube-api-access-k6xv2:
Type: Projected (a volume that contains injected data from multiple sources)
TokenExpirationSeconds: 3607
ConfigMapName: kube-root-ca.crt
ConfigMapOptional: <nil>
DownwardAPI: true
QoS Class: BestEffort
Node-Selectors: <none>
Tolerations: node.kubernetes.io/not-ready:NoExecute op=Exists for 300s
node.kubernetes.io/unreachable:NoExecute op=Exists for 300s
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal Scheduled 14m default-scheduler Successfully assigned default/likeixy to node01
Normal Pulled 14m kubelet Container image "registry.cn-hangzhou.aliyuncs.com/yinzhengjie-k8s/apps:v1" already present on machine
Normal Created 14m kubelet Created container b
Normal Started 14m kubelet Started container b
Normal Killing 5m53s kubelet Container b definition changed, will be restarted
Normal BackOff 5m24s (x2 over 5m52s) kubelet Back-off pulling image "registry.cn-hangzhou.aliyuncs.com/yinzhengjie-k8s/apps:v100"
Warning Failed 5m24s (x2 over 5m52s) kubelet Error: ImagePullBackOff
Normal Pulling 4m20s (x4 over 5m53s) kubelet Pulling image "registry.cn-hangzhou.aliyuncs.com/yinzhengjie-k8s/apps:v100"
Warning Failed 4m19s (x4 over 5m53s) kubelet Failed to pull image "registry.cn-hangzhou.aliyuncs.com/yinzhengjie-k8s/apps:v100": rpc error: code = Unknown desc = Error response from daemon: manifest for registry.cn-hangzhou.aliyuncs.com/yinzhengjie-k8s/apps:v100 not found: manifest unknown: manifest unknown
Warning Failed 4m19s (x4 over 5m53s) kubelet Error: ErrImagePull
Warning BackOff 3m26s (x7 over 5m1s) kubelet Back-off restarting failed container
图4 提示镜像拉取失败
04 镜像名字格式不正确
# 这个也是镜像拉取失败，因为定义镜像名称是含有大写字母，所以报错
图5 错误提示，提示图像命名不合法
[root@master01 yaml]# kubectl describe pod likeixy
Name: likeixy
Namespace: default
Priority: 0
Node: node01/172.2.25.52
Start Time: Tue, 20 May 202516:30:25 +0800
Labels: <none>
Annotations: <none>
Status: Pending
IP: 172.2.25.52
IPs:
IP: 172.2.25.52
Containers:
b:
Container ID:
Image: registry.cn-hangzhou.aliyuncs.com/yinzhengjie-k8s/Apps:v1
Image ID:
Port: <none>
Host Port: <none>
State: Waiting
Reason: InvalidImageName
Ready: False
Restart Count: 0
Environment: <none>
Mounts:
/var/run/secrets/kubernetes.io/serviceaccount from kube-api-access-dvhcl (ro)
Conditions:
Type Status
Initialized True
Ready False
ContainersReady False
PodScheduled True
Volumes:
kube-api-access-dvhcl:
Type: Projected (a volume that contains injected data from multiple sources)
TokenExpirationSeconds: 3607
ConfigMapName: kube-root-ca.crt
ConfigMapOptional: <nil>
DownwardAPI: true
QoS Class: BestEffort
Node-Selectors: <none>
Tolerations: node.kubernetes.io/not-ready:NoExecute op=Exists for 300s
node.kubernetes.io/unreachable:NoExecute op=Exists for 300s
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal Scheduled 72s default-scheduler Successfully assigned default/likeixy to node01
Warning InspectFailed 5s (x7 over 71s) kubelet Failed to apply default image tag "registry.cn-hangzhou.aliyuncs.com/yinzhengjie-k8s/Apps:v1": couldn't parse image reference "registry.cn-hangzhou.aliyuncs.com/yinzhengjie-k8s/Apps:v1": invalid reference format: repository name must be lowercase
Warning Failed 5s (x7 over 71s) kubelet Error: InvalidImageName
图6 提示名字必须是小写字母
05 休眠
[root@master01 yaml]# cat 02-network.yaml
apiVersion: v1
kind: Pod
metadata:
name: oldboyedu-xiuxian-command
spec:
hostNetwork: true
containers:
- name: c1
image: registry.cn-hangzhou.aliyuncs.com/yinzhengjie-k8s/apps:v1
# 修改容器的启动命令，相当于替换了Dockerfile的ENTRYPOINT指令
command: ["sleep","3600"][root@master01 yaml]# kubectl apply -f 02-network.yaml
pod/oldboyedu-xiuxian-command created
[root@master01 yaml]# kubectl get pods -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
oldboyedu-xiuxian-command 1/1 Running 0 12s 172.2.25.52 node01 <none><none>
图7 表面上容器是正常运行的
图8 使用Curl命令是拒绝连接的
[root@master01 yaml]# kubectl exec -it oldboyedu-xiuxian-command -- sh
/ # ps -ef
PID USER TIME COMMAND
1 root 0:00 sleep36007 root 0:00 sh12 root 0:00 ps-ef
/ # nginx2025/05/20 08:40:02 [notice]13#13: using the "epoll" event method2025/05/20 08:40:02 [notice]13#13: nginx/1.20.12025/05/20 08:40:02 [notice]13#13: built by gcc 10.2.1 20201203 (Alpine 10.2.1_pre1) 2025/05/20 08:40:02 [notice]13#13: OS: Linux 3.10.0-1160.el7.x86_642025/05/20 08:40:02 [notice]13#13: getrlimit(RLIMIT_NOFILE): 4096:40962025/05/20 08:40:02 [notice]14#14: start worker processes2025/05/20 08:40:02 [notice]14#14: start worker process 152025/05/20 08:40:02 [notice]14#14: start worker process 16
/ # ps -ef
PID USER TIME COMMAND
1 root 0:00 sleep36007 root 0:00 sh14 root 0:00 nginx: master process nginx
15 nginx 0:00 nginx: worker process
16 nginx 0:00 nginx: worker process
17 root 0:00 ps-ef
