如何在部署时使用 Kubernetes 为 pod 分配静态 IP [英] How to assign a static IP to a pod using Kubernetes on deployment
问题描述
我正在尝试在部署时为 pod 分配静态 IP 地址.
I am trying to assign a static IP address to a pod on deployment.
apiVersion: apps/v1beta1
kind: Deployment
metadata:
name: aws-test-mysql
spec:
replicas: 1
template:
metadata:
labels:
app: aws-test-mysql
spec:
containers:
- name: aws-test-mysql
image: 461677341235123.dkr.ecr.us-east-1.amazonaws.com/aws-test-mysql
securityContext:
privileged: true
ports:
- containerPort: 3306
hostIP: 172.20.32.50
hostPort: 3306
resources:
requests:
cpu: 100m
imagePullSecrets:
- name: ecrkey
正如我在描述我的 pod 时所看到的,它是使用另一个 IP 创建的.
As you can see when I described my pod it is created with another IP.
test-mbp1:aws test$ kubectl describe pods | grep IP
IP: 100.96.1.3
我正在尝试在种类:部署"上部署具有静态 IP 的 pod,而不是作为服务.
I'm trying to deploy a pod with a static IP on "kind: Deployment" and not as a service.
这可能吗?
推荐答案
由于 kubernetes IP 层的动态特性,静态 IP 无法分配给 Pod.
A static IP cannot be assigned to a Pod because of the dynamic nature of kubernetes' IP layer.
由于您不想附加服务(恕我直言,这是最好的方法),一个接近的替代方法是将部署转换为 StatefulSet.这将为 Pod 提供一个或多或少满足您要求的静态主机名.
Since you don't want to attach a Service (which is the best way imho), a close alternative is to convert the Deployment to a StatefulSet. This will give the Pod a static hostname which more-or-less fulfils your requirement.
StatefulSet 的第一个副本将被称为 aws-test-mysql-0.<kubernetes.cluster.tld>
.
The first replica of the StatefulSet will be called aws-test-mysql-0.<kubernetes.cluster.tld>
.
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