一、创建一个测试用的deployment
[root@linux-node1 src]# kubectl run net-test --image=alpine --replicas=2 sleep 360000
deployment.apps "net-test" created
查看获取IP情况
[root@linux-node1 src]# kubectl get pod -o wide #网络问题，等待一段时间
NAME READY STATUS RESTARTS AGE IP NODE
net-test-5767cb94df-gdlqq 0/1 ContainerCreating 0 11s <none> 192.168.56.12
net-test-5767cb94df-r2wp5 0/1 ContainerCreating 0 11s <none> 192.168.56.13
[root@linux-node1 src]# kubectl get pod -o wide
NAME READY STATUS RESTARTS AGE IP NODE
net-test-5767cb94df-gdlqq 1/1 Running 0 6m 10.2.13.2 192.168.56.12
net-test-5767cb94df-r2wp5 1/1 Running 0 6m 10.2.17.2 192.168.56.13
测试连通性
[root@linux-node1 src]# ping 10.2.13.2
PING 10.2.13.2 (10.2.13.2) 56(84) bytes of data.
64 bytes from 10.2.13.2: icmp_seq=1 ttl=63 time=1.00 ms
64 bytes from 10.2.13.2: icmp_seq=2 ttl=63 time=0.751 ms
^C
--- 10.2.13.2 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 0.751/0.879/1.007/0.128 ms
[root@linux-node1 src]# ping 10.2.17.2
PING 10.2.17.2 (10.2.17.2) 56(84) bytes of data.
64 bytes from 10.2.17.2: icmp_seq=1 ttl=63 time=1.01 ms
64 bytes from 10.2.17.2: icmp_seq=2 ttl=63 time=1.67 ms
^C
--- 10.2.17.2 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 1.010/1.342/1.675/0.334 ms
二、创建一个Nginx镜像
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-deployment
labels:
app: nginx
spec:
replicas: 3
selector:
matchLabels:
app: nginx
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: nginx:1.10.3
ports:
- containerPort: 80
nginx-deployment.yaml
[root@linux-node1 ~]# kubectl create -f nginx-deployment.yaml
deployment.apps "nginx-deployment" created
[root@linux-node1 ~]# kubectl get deployment
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
net-test 2 2 2 2 15m
nginx-deployment 3 3 3 0 35s
[root@linux-node1 ~]# kubectl describe deployment nginx-deployment
Name: nginx-deployment
Namespace: default
CreationTimestamp: Thu, 31 May 2018 17:09:05 +0800
Labels: app=nginx
Annotations: deployment.kubernetes.io/revision=1
Selector: app=nginx
Replicas: 3 desired | 3 updated | 3 total | 0 available | 3 unavailable
StrategyType: RollingUpdate
MinReadySeconds: 0
RollingUpdateStrategy: 25% max unavailable, 25% max surge
Pod Template:
Labels: app=nginx
Containers:
nginx:
Image: nginx:1.10.3
Port: 80/TCP
Host Port: 0/TCP
Environment: <none>
Mounts: <none>
Volumes: <none>
Conditions:
Type Status Reason
---- ------ ------
Available False MinimumReplicasUnavailable
Progressing True ReplicaSetUpdated
OldReplicaSets: <none>
NewReplicaSet: nginx-deployment-75d56bb955 (3/3 replicas created)
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal ScalingReplicaSet 1m deployment-controller Scaled up replica set nginx-deployment-75d56bb955 to 3
[root@linux-node1 ~]# kubectl get pod
NAME READY STATUS RESTARTS AGE
net-test-5767cb94df-gdlqq 1/1 Running 0 17m
net-test-5767cb94df-r2wp5 1/1 Running 0 17m
nginx-deployment-75d56bb955-4bvhk 0/1 ImagePullBackOff 0 2m
nginx-deployment-75d56bb955-5kvfw 0/1 ContainerCreating 0 2m
nginx-deployment-75d56bb955-r5dr5 0/1 ContainerCreating 0 2m
[root@linux-node1 ~]# kubectl describe pod nginx-deployment-75d56bb955-4bvhk
Name: nginx-deployment-75d56bb955-4bvhk
Namespace: default
Node: 192.168.56.12/192.168.56.12
Start Time: Thu, 31 May 2018 17:09:05 +0800
Labels: app=nginx
pod-template-hash=3181266511
Annotations: <none>
Status: Pending
IP: 10.2.13.3
Controlled By: ReplicaSet/nginx-deployment-75d56bb955
Containers:
nginx:
Container ID:
Image: nginx:1.10.3
Image ID:
Port: 80/TCP
Host Port: 0/TCP
State: Waiting
Reason: ImagePullBackOff
Ready: False
Restart Count: 0
Environment: <none>
Mounts:
/var/run/secrets/kubernetes.io/serviceaccount from default-token-wn78r (ro)
Conditions:
Type Status
Initialized True
Ready False
PodScheduled True
Volumes:
default-token-wn78r:
Type: Secret (a volume populated by a Secret)
SecretName: default-token-wn78r
Optional: false
QoS Class: BestEffort
Node-Selectors: <none>
Tolerations: <none>
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal Scheduled 3m default-scheduler Successfully assigned nginx-deployment-75d56bb955-4bvhk to 192.168.56.12
Normal SuccessfulMountVolume 3m kubelet, 192.168.56.12 MountVolume.SetUp succeeded for volume "default-token-wn78r"
Warning Failed 2m kubelet, 192.168.56.12 Failed to pull image "nginx:1.10.3": rpc error: code = Unknown desc = error pulling image configuration: Get https://dseasb33srnrn.cloudfront.net/registry-v2/docker/registry/v2/blobs/sha256/03/0346349a1a640da9535acfc0f68be9d9b81e85957725ecb76f3b522f4e2f0455/data?Expires=1527760756&Signature=FsFobL4~r~N6zja0Nft-H-GlJCzxDZ6Ne-z-Ucnh-4iQe4fFi2m1bV9naqFWAo2ayIZHyo2FKdR4wujqZuqQKdwuj9L8bevbdIlKwy7qbBMFJq3n6g3jzmIjZ5QrlvV3AMD~hb60A2TRHtbOAtPgsYBEANbzJUnlnSDtpW8fxkg_&Key-Pair-Id=APKAJECH5M7VWIS5YZ6Q: net/http: TLS handshake timeout
Warning Failed 2m kubelet, 192.168.56.12 Error: ErrImagePull
Normal BackOff 2m kubelet, 192.168.56.12 Back-off pulling image "nginx:1.10.3"
Warning Failed 2m kubelet, 192.168.56.12 Error: ImagePullBackOff
