最近任務(wù)是把之前運(yùn)行在docker里的自己寫的java鏡像部署到k8
s中，踩了一些坑，記錄如下：
1.在寫yaml文件時(shí)指定非shell命令而是一些命令行的時(shí)候要加上bash -c否則會(huì)報(bào)錯(cuò)：exec:“bash”:executable file not found in $PATH
2.如果要操作容器里/etc/hosts這樣的文件，會(huì)報(bào)錯(cuò)： can’t move ‘/etc/resolv.conf73UqmG’ to ‘/etc/resolv.conf’: Device or resource busy，一定要記著操作方式，如果用sed命令會(huì)報(bào)錯(cuò)，因?yàn)閟ed命令會(huì)重新拷貝一份，具體參考：https://www.cnblogs.com/xuxinkun/p/7116737.html
最后通過bash -c的方式往hosts文件里加域名：(因?yàn)閛penjdk:8-jdk-alpine只有sh沒有bash，所以使用sh）

apiVersion: apps/v1 kind: Deployment metadata:name: java-data-storelabels:app: java-data-store spec:replicas: 1selector:matchLabels:app: java-data-storetemplate:metadata:labels:app: java-data-storespec:containers:- name: java-data-storeimage: harbor:9501/library/openjdk:8-jdk-alpineimagePullPolicy: IfNotPresentports:- name: data-storecontainerPort: 40502command: ["java", "-jar","jars/data-store.jar"]lifecycle:postStart:exec:command: ["sh","-c","echo 'xx.xx.xx.xx xxxx' >> /etc/hosts"]env:volumeMounts:- name: jar-volmountPath: /jars- name: log-volmountPath: app/logsrestartPolicy: Alwaysvolumes:- name: jar-volglusterfs:endpoints: glusterfs-clusterpath: gv0/userapp/java-apps/jarsreadOnly: false- name: log-volglusterfs:endpoints: glusterfs-clusterpath: gv0/userapp/java-apps/logs/data-storereadOnly: false --- apiVersion: v1 kind: Service metadata:name: java-data-store spec:selector:app: java-data-storeports:- port: 40502targetPort: 40502nodePort: 30203type: NodePort

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