控制器简介
Kubernetes 中内建了很多 controller（控制器），这些相当于一个状态机，用来控制 Pod 的具体状态和行为
- 负责应用编排的控制器类型有如下几种:
- ReplicationController:最早期的Pod控制器;
- RelicaSet: 副本集,负责管理一个应用(Pod）的多个副本;
- Deployment: 部署，它不直接管理Pod，而是借助于ReplicaSet来管理Pod;最常用的无状态应用控制器;
- DaemonSet:守护进程集，用于确保在每个节点仅运行某个应用的一个Pod副本;
- StatefulSet:功能类似于Deployment，但StatefulSet专用于编排有状态应用;
- Job:有终止期限的一次性作业式任务，而非一直处于运行状态的服务进程;
- CronJob:有终止期限的周期性作业式任务;
ReplicaSet 简介
- ReplicationController 和 ReplicaSet
ReplicationController（RC）用来确保容器应用的副本数始终保持在用户定义的副本数，即如果有容器异常退
出，会自动创建新的 Pod 来替代；而如果异常多出来的容器也会自动回收；
在新版本的 Kubernetes 中建议使用 ReplicaSet 来取代 ReplicationController 。ReplicaSet 跟
ReplicationController 没有本质的不同，只是名字不一样，并且 ReplicaSet 支持集合式的 selector； - Pod控制器定义要素:
- 标签选择器;
- 期望的副本数;
- Pod模板;
- ReplicaSet的更新机制:
删除式更新
比如:- set image:更新应用版本，但对于replicaset来说，仅能更新API Server中的定义 实际运行Pod只能删除后重新启动才生效
Replicaset 字段说明
apiversion: apps/v1
kind: Replicaset
metadata:
name: ...
namespace: …
spec:
minReadySeconds #Pod就绪后多少秒内任一容器无crash方可视为“就绪”
replicas #期望的Pod副本数,默认为1
selectorl: #标签选择器，必须匹配template字段中Pod模板中的标签;
matchExpressions_<[ ]Object> #标签选择器表达式列表，多个列表项之间为“与"关系
matchLabels #map格式的标签选择器;和之前SVC的标签选择器为selector:类似
template: #Pod模板对象
metadata: #Pod对象元数据
labels: #由模板创建出的Pod对象所拥有的标签，必须要能够匹配前面定义的标签选择器
spec:# Pod规范,格式同自主式Pod
...... 示例1：创ReplicaSet控制器
[root@k8s-master PodControl]# cat replicaset.demo.yaml
apiVersion: apps/v1
kind: ReplicaSet
metadata:
name: replicaset-demo
spec:
minReadySeconds: 3
replicas: 2
selector:
matchLabels:
app: demoapp
release: stable
version: v1.0
template:
metadata:
labels: #这里的标签要能覆盖住上面的标签,可以比上面多但不能比上面少,因为理论上控制器如果匹配不到Pod 控制器会无限创建Pod,实际是建创时会报错
app: demoapp
release: stable
version: v1.0
test: test22
spec:
containers:
- name: demoapp
image: ikubernetes/demoapp:v1.0
ports:
- name: http
containerPort: 80
livenessProbe:
httpGet:
path: '/livez'
port: 80
initialDelaySeconds : 10
readinessProbe:
httpGet:
path: '/readyz'
port: 80
initialDelaySeconds: 15
[root@k8s-master PodControl]# kubectl get replicaset -o wide
NAME DESIRED CURRENT READY AGE CONTAINERS IMAGES SELECTOR
replicaset-demo 2 2 2 30m demoapp ikubernetes/demoapp:v1.0 app=demoapp,release=stable,version=v1.0
[root@k8s-master PodControl]# kubectl get pod -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
my-grafana-7d788c5479-4ztb7 1/1 Running 0 44m 10.244.1.208 k8s-node1
replicaset-demo-b4hx9 1/1 Running 0 34m 10.244.1.210 k8s-node1
replicaset-demo-zb7m5 1/1 Running 1 34m 10.244.2.203 k8s-node2
#查看描述信息
[root@k8s-master PodControl]# kubectl describe replicasets/replicaset-demo
Name: replicaset-demo
Namespace: default
Selector: app=demoapp,release=stable,version=v1.0
Labels:
Annotations:
Replicas: 2 current / 2 desired #现在运行 / 期望运行
Pods Status: 2 Running / 0 Waiting / 0 Succeeded / 0 Failed #Pod状态
Pod Template:
Labels: app=demoapp
release=stable
test=test22
version=v1.0
Containers:
demoapp:
Image: ikubernetes/demoapp:v1.0
Port: 80/TCP
Host Port: 0/TCP
Liveness: http-get http://:80/livez delay=10s timeout=1s period=10s #success=1 #failure=3
Readiness: http-get http://:80/readyz delay=15s timeout=1s period=10s #success=1 #failure=3
Environment:
Mounts:
Volumes:
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal SuccessfulCreate 8m28s replicaset-controller Created pod: replicaset-demo-b4hx9
Normal SuccessfulCreate 8m28s replicaset-controller Created pod: replicaset-demo-zb7m5
[root@k8s-master PodControl]# kubectl get pod replicaset-demo-zb7m5 -o yaml
...
ownerReferences: #查看Pod受哪个管理器管理
- apiVersion: apps/v1
blockOwnerDeletion: true
controller: true
kind: ReplicaSet
name: replicaset-demo
uid: d6525139-a5a5-4886-9c2b-d7cfe2db6d35
resourceVersion: "8790580"
selfLink: /api/v1/namespaces/default/pods/replicaset-demo-zb7m5
... - ReplicaSet更新 可使用kubectl set命令更新
[root@k8s-master PodControl]# kubectl set image --help #查看set更新的相关案例
Update existing container image(s) of resources.
Possible resources include (case insensitive):
pod (po), replicationcontroller (rc), deployment (deploy), daemonset (ds), replicaset (rs)
Examples:
# Set a deployment's nginx container image to 'nginx:1.9.1', and its busybox container image to
'busybox'.
kubectl set image deployment/nginx busybox=busybox nginx=nginx:1.9.1
# Update all deployments' and rc's nginx container's image to 'nginx:1.9.1'
kubectl set image deployments,rc nginx=nginx:1.9.1 --all
# Update image of all containers of daemonset abc to 'nginx:1.9.1'
kubectl set image daemonset abc *=nginx:1.9.1
# Print result (in yaml format) of updating nginx container image from local file, without hitting
the server- 更新image镜像
[root@k8s-master PodControl]# kubectl set image replicasets/replicaset-demo demoapp=ikubernetes/demoapp:v1.1 #更新replicasets中镜像版本为v1.1
replicaset.apps/replicaset-demo image updat
[root@k8s-master PodControl]# kubectl get pod -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
my-grafana-7d788c5479-4ztb7 1/1 Running 0 44m 10.244.1.208 k8s-node1
replicaset-demo-b4hx9 1/1 Running 0 34m 10.244.1.210 k8s-node1
replicaset-demo-zb7m5 1/1 Running 1 34m 10.244.2.203 k8s-node2
[root@k8s-master PodControl]# kubectl get replicaset/replicaset-demo -o yaml|grep image
...
- image: ikubernetes/demoapp:v1.1
imagePullPolicy: IfNotPresent
#可以看到replicaset中的镜像信息已经更新成功
[root@k8s-master PodControl]# kubectl get pods replicaset-demo-zb7m5 -o yaml
containerStatuses:
- containerID: docker://4c4e576d7f5accb89c4f73a0aef18bd99cac37ee81b34a07a363d2afc35d5189
image: ikubernetes/demoapp:v1.0
imageID: docker-pullable://ikubernetes/demoapp@sha256:6698b205eb18fb0171398927f3a35fe27676c6bf5757ef57a35a4b055badf2c3
#但Pod中的image并没有更新
[root@k8s-master PodControl]# curl 10.244.1.210
iKubernetes demoapp v1.0 !! ClientIP: 10.244.0.0, ServerName: replicaset-demo-b4hx9, ServerIP: 10.244.1.210!
[root@k8s-master PodControl]# curl 10.244.1.210
iKubernetes demoapp v1.0 !! ClientIP: 10.244.0.0, ServerName: replicaset-demo-b4hx9, ServerIP: 10.244.1.210!
#实际访问Pod 也并没有更新成功 这是因为ReplicaSet为删除式更新 Pod删除重启后才会生效
[root@k8s-master PodControl]# kubectl delete pod -l app=demoapp,release=stable
pod "replicaset-demo-b4hx9" deleted
pod "replicaset-demo-zb7m5" deleted
[root@k8s-master PodControl]# kubectl get pod -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
my-grafana-7d788c5479-4ztb7 1/1 Running 0 57m 10.244.1.208 k8s-node1
replicaset-demo-686fl 0/1 Running 1 2m28s 10.244.1.212 k8s-node1
replicaset-demo-k4pq9 0/1 Running 0 2m28s 10.244.3.49 k8s-node3
[root@k8s-master PodControl]# curl 10.244.3.49 #更新成功
iKubernetes demoapp v1.1 !! ClientIP: 10.244.0.0, ServerName: replicaset-demo-k4pq9, ServerIP: 10.244.3.49!
[root@k8s-master PodControl]# curl 10.244.3.49
iKubernetes demoapp v1.1 !! ClientIP: 10.244.0.0, ServerName: replicaset-demo-k4pq9, ServerIP: 10.244.3.49 服务部署 蓝绿发布、滚动更新
Pod部署类型:
蓝绿发布: 在旧版本的基础上 在新建一套新版本
优点:回滚方便 可以把新旧版本完全切换
缺点:因为需要重新创建一套服务,更新中需要会占用更多的系统资源,切换途中流量可能会中断
滚动更新: 新增一个新版Pod在删除一个旧版Pod;或删除一个旧版Pod在新增一个新版Pod
优点:升级过程对系统资源需要更少;可以保证流量不间断
缺点: 新旧版本同时存在,回滚麻烦
示例2:滚动发布
[root@k8s-master PodControl]# cat replicaset.demo.yaml
apiVersion: apps/v1
kind: ReplicaSet
metadata:
name: replicaset-demo
spec:
minReadySeconds: 3
replicas: 2
selector:
matchLabels:
app: demoapp
release: stable
version: v1.0
template:
metadata:
labels:
app: demoapp
release: stable
version: v1.0
test: test22
spec:
containers:
- name: demoapp
image: ikubernetes/demoapp:v1.0
ports:
- name: http
containerPort: 80
[root@k8s-master PodControl]# cat service-for-replicaset-demo.yaml #创建对应的svc 注意SVC标签需要能同时匹配新旧版本
apiVersion: v1
kind: Service
metadata:
name: demoapp
namespace: default
spec:
type: ClusterIP
clusterIP: 10.97.26.1
selector: #滚动升级 SVC使用的标签需要能同时匹配新旧版本
app: demoapp
release: stable
ports:
- name: http
port: 80
protocol: TCP
targetPort: 80
[root@k8s-master PodControl]# kubectl apply -f replicaset.demo.yaml -f service-for-replicaset-demo.yaml
[root@k8s-master PodControl]# kubectl get pod
NAME READY STATUS RESTARTS AGE
pod-18865 1/1 Running 0 16m
replicaset-demo-d8jm9 1/1 Running 0 2m14s
replicaset-demo-xtz2n 1/1 Running 0 2m14s
iKubernetes demoapp v1.0 !! ClientIP: 10.244.0.0, ServerName: replicaset-demo-d8jm9, ServerIP: 10.244.1.218!
[root@k8s-master PodControl]# curl 10.97.26.1
iKubernetes demoapp v1.0 !! ClientIP: 10.244.0.0, ServerName: replicaset-demo-xtz2n, ServerIP: 10.244.2.204!
[root@k8s-master PodControl]# curl 10.97.26.1
- 别起一个终端创建Pod 用作测试
[root@k8s-master ~]# kubectl run pod-$RANDOM --image=ikubernetes/admin-box:latest -it --rm --command -- /bin/sh #创建一个Pod 用作测试
root@pod-18865 # while true; do curl --connect-timeout 1 demoapp.default.svc; sleep .2;done #访问测试 调度策略为轮询 1.0版本
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: replicaset-demo-xtz2n, ServerIP: 10.244.2.204!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: replicaset-demo-d8jm9, ServerIP: 10.244.1.218!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: replicaset-demo-xtz2n, ServerIP: 10.244.2.204!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: replicaset-demo-d8jm9, ServerIP: 10.244.1.218!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: replicaset-demo-xtz2n, ServerIP: 10.244.2.204!
- 新增ReplicaSet 使用ikubernetes/demoapp:v1.1版本
[root@k8s-master PodControl]# cat replicaset.demo-v1.1.yaml
apiVersion: apps/v1
kind: ReplicaSet
metadata:
name: replicaset-demo-v1.1
spec:
minReadySeconds: 3
replicas: 1
selector:
matchLabels:
app: demoapp
release: stable
version: v1.1
template:
metadata:
labels:
app: demoapp
release: stable
version: v1.1
test: test22
spec:
containers:
- name: demoapp
image: ikubernetes/demoapp:v1.1
ports:
- name: http
containerPort: 80
[root@k8s-master PodControl]# kubectl apply -f replicaset.demo-v1.1.yaml
replicaset.apps/replicaset-demo-v1.1 created
[root@k8s-master PodControl]# kubectl get pod
NAME READY STATUS RESTARTS AGE
pod-18865 1/1 Running 0 26m
replicaset-demo-d8jm9 1/1 Running 1 12m
replicaset-demo-v1.1-dhmlq 1/1 Running 0 21s
replicaset-demo-xtz2n 1/1 Running 0 12m
- 查看测试结果 SVC已经绑定到 1.1版本 新旧版本并存
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: replicaset-demo-v1.1-dhmlq, ServerIP: 10.244.1.219!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: replicaset-demo-d8jm9, ServerIP: 10.244.1.218!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: replicaset-demo-xtz2n, ServerIP: 10.244.2.204!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: replicaset-demo-v1.1-dhmlq, ServerIP: 10.244.1.219!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: replicaset-demo-d8jm9, ServerIP: 10.244.1.218!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: replicaset-demo-xtz2n, ServerIP: 10.244.2.204!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: replicaset-demo-v1.1-dhmlq, ServerIP: 10.244.1.219!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: replicaset-demo-d8jm9, ServerIP: 10.244.1.218!- 修改老版本副本数
[root@k8s-master PodControl]# kubectl edit rs replicaset-demo
spec:
minReadySeconds: 3
replicas: 1
selector:
[root@k8s-master PodControl]# kubectl get pod
NAME READY STATUS RESTARTS AGE
pod-18865 1/1 Running 0 30m
replicaset-demo-v1.1-dhmlq 1/1 Running 0 6m22s
replicaset-demo-xtz2n 1/1 Running 0 16m
- 查看测试结果 新旧版本并存 访问量各占一半
root@pod-18865 # while true; do curl --connect-timeout 1 demoapp.default.svc; sleep .2;done
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: replicaset-demo-xtz2n, ServerIP: 10.244.2.204!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: replicaset-demo-v1.1-dhmlq, ServerIP: 10.244.1.219!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: replicaset-demo-xtz2n, ServerIP: 10.244.2.204!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: replicaset-demo-v1.1-dhmlq, ServerIP: 10.244.1.219!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: replicaset-demo-xtz2n, ServerIP: 10.244.2.204!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: replicaset-demo-v1.1-dhmlq, ServerIP: 10.244.1.219!
- 继续更新 新版本新增一个Pod 老版本删一个Pod
[root@k8s-master PodControl]# kubectl edit rs replicaset-demo-v1.1 #新版本副本数修改为2
replicaset.apps/replicaset-demo-v1.1 edited
[root@k8s-master PodControl]# kubectl edit rs replicaset-demo #老版本副本数为0
replicaset.apps/replicaset-demo edited
[root@k8s-master PodControl]# kubectl get pod
NAME READY STATUS RESTARTS AGE
pod-18865 1/1 Running 0 34m
replicaset-demo-v1.1-bnck8 1/1 Running 0 80s
replicaset-demo-v1.1-dhmlq 1/1 Running 0 10m
- 查看测试结果 更新版本完成
Kubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: replicaset-demo-v1.1-bnck8, ServerIP: 10.244.3.50!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: replicaset-demo-v1.1-dhmlq, ServerIP: 10.244.1.219!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: replicaset-demo-v1.1-bnck8, ServerIP: 10.244.3.50!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: replicaset-demo-v1.1-dhmlq, ServerIP: 10.244.1.219!
示例3:蓝绿发布
envsubst使用环境变量替换文件内容 模板复用
- 使用envsubst命令envsubst替换文件内容,默认kubernetes、YAML都是不支持变量的
[root@k8s-master PodControl]# cat replicaset-blue-gree.yaml
apiVersion: apps/v1
kind: ReplicaSet
metadata:
name: rs-${DEPLOY} #为了使模板能复用 使用变量
spec:
minReadySeconds: 3
replicas: 2
selector:
matchLabels:
app: demoapp
ctr: rs-${DEPLOY}
version: ${VERSION}
template:
metadata:
labels:
app: demoapp
ctr: rs-${DEPLOY}
version: ${VERSION}
spec:
containers:
- name: demoapp
image: ikubernetes/demoapp:${VERSION}
ports:
- name: http
containerPort: 80
[root@k8s-master PodControl]# DEPLOY=blue VERSION=v1.0 envsubst < replicaset-blue-gree.yaml #替换变量
apiVersion: apps/v1
kind: ReplicaSet
metadata:
name: rs-blue #应用变量值
spec:
minReadySeconds: 3
replicas: 2
selector:
matchLabels:
app: demoapp
ctr: rs-blue
version: v1.0
template:
metadata:
labels:
app: demoapp
ctr: rs-blue
version: v1.0
spec:
containers:
- name: demoapp
image: ikubernetes/demoapp:v1.0
ports:
- name: http
containerPort: 80
[root@k8s-master PodControl]# DEPLOY=blue VERSION=v1.0 envsubst < replicaset-blue-gree.yaml |kubectl apply -f - #创建SVC
[root@k8s-master PodControl]# cat replicaset-blue-gree.yaml
apiVersion: apps/v1
kind: ReplicaSet
metadata:
name: rs-${DEPLOY} #为了使模板能复用 使用变量
spec:
minReadySeconds: 3
replicas: 2
selector:
matchLabels:
app: demoapp
ctr: rs-${DEPLOY}
version: ${VERSION}
template:
metadata:
labels:
app: demoapp
ctr: rs-${DEPLOY}
version: ${VERSION}
spec:
containers:
- name: demoapp
image: ikubernetes/demoapp:${VERSION}
ports:
- name: http
containerPort: 80
[root@k8s-master PodControl]# DEPLOY=blue VERSION=v1.0 envsubst < service-blue-green.yaml |kubectl apply -f -
service/demoapp-svc created
[root@k8s-master PodControl]# kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
demoapp ClusterIP 10.97.26.1 80/TCP 113m
demoapp-svc ClusterIP 10.99.170.77 80/TCP 20s
kubernetes ClusterIP 10.96.0.1 443/TCP 11 - 测试
root@pod-18865 # while true; do curl --connect-timeout 1 demoapp-svc.default.svc; sleep .2;done
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: rs-blue-gwnw7, ServerIP: 10.244.2.205! #可以看到全部来自rs-blue
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: rs-blue-28lgc, ServerIP: 10.244.1.220!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: rs-blue-gwnw7, ServerIP: 10.244.2.205!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: rs-blue-28lgc, ServerIP: 10.244.1.220!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: rs-blue-gwnw7, ServerIP: 10.244.2.205!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: rs-blue-28lgc, ServerIP: 10.244.1.220!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: rs-blue-gwnw7, ServerIP: 10.244.2.205!- 新增rs用于更新发布
[root@k8s-master PodControl]# DEPLOY=green VERSION=v1.1 envsubst < replicaset-blue-gree.yaml |kubectl apply -f -
replicaset.apps/rs-green created
[root@k8s-master PodControl]# kubectl get rs
NAME DESIRED CURRENT READY AGE
replicaset-demo 0 0 0 92m
replicaset-demo-v1.1 2 2 2 81m
rs-blue 2 2 2 13m
rs-green 2 2 0 8s
[root@k8s-master PodControl]# kubectl get pod #等Pod全部准备就绪
NAME READY STATUS RESTARTS AGE
pod-18865 1/1 Running 0 106m
replicaset-demo-v1.1-bnck8 1/1 Running 0 73m
replicaset-demo-v1.1-dhmlq 1/1 Running 0 82m
rs-blue-28lgc 1/1 Running 0 14m
rs-blue-gwnw7 1/1 Running 0 14m
rs-green-d4t66 1/1 Running 0 40s
rs-green-l75j7 1/1 Running 0 40s
[root@k8s-master PodControl]# DEPLOY=green VERSION=v1.1 envsubst < service-blue-green.yaml |kubectl apply -f -
service/demoapp-svc configured- 查看测试结果
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: rs-blue-28lgc, ServerIP: 10.244.1.220!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: rs-blue-gwnw7, ServerIP: 10.244.2.205!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: rs-blue-28lgc, ServerIP: 10.244.1.220!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: rs-blue-gwnw7, ServerIP: 10.244.2.205!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: rs-blue-28lgc, ServerIP: 10.244.1.220!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: rs-blue-gwnw7, ServerIP: 10.244.2.205!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: rs-blue-28lgc, ServerIP: 10.244.1.220!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: rs-blue-gwnw7, ServerIP: 10.244.2.205!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: rs-green-l75j7, ServerIP: 10.244.3.52! #完成版本更新
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: rs-green-d4t66, ServerIP: 10.244.1.222!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: rs-green-l75j7, ServerIP: 10.244.3.52!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: rs-green-d4t66, ServerIP: 10.244.1.222!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: rs-green-l75j7, ServerIP: 10.244.3.52!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: rs-green-d4t66, ServerIP: 10.244.1.222!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: rs-green-l75j7, ServerIP: 10.244.3.52!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: rs-green-d4t66, ServerIP: 10.244.1.222!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: rs-green-l75j7, ServerIP: 10.244.3.52!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: rs-green-d4t66, ServerIP: 10.244.1.222!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: rs-green-l75j7, ServerIP: 10.244.3.52!- 修改变量 版本回退
[root@k8s-master PodControl]# DEPLOY=blue VERSION=v1.0 envsubst < service-blue-green.yaml |kubectl apply -f -
service/demoapp-svc configured
#查看测试结果
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: rs-green-l75j7, ServerIP: 10.244.3.52!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: rs-green-d4t66, ServerIP: 10.244.1.222!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: rs-green-l75j7, ServerIP: 10.244.3.52!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: rs-green-d4t66, ServerIP: 10.244.1.222!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: rs-green-l75j7, ServerIP: 10.244.3.52!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: rs-green-d4t66, ServerIP: 10.244.1.222!
iKubernetes demoapp v1.1 !! ClientIP: 10.244.1.217, ServerName: rs-green-l75j7, ServerIP: 10.244.3.52!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: rs-blue-gwnw7, ServerIP: 10.244.2.205! #完成版本回退
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: rs-blue-28lgc, ServerIP: 10.244.1.220!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: rs-blue-gwnw7, ServerIP: 10.244.2.205!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: rs-blue-28lgc, ServerIP: 10.244.1.220!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: rs-blue-gwnw7, ServerIP: 10.244.2.205!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: rs-blue-28lgc, ServerIP: 10.244.1.220!
iKubernetes demoapp v1.0 !! ClientIP: 10.244.1.217, ServerName: rs-blue-gwnw7, ServerIP: 10.244.2.205!