1. 设置Pod从环境变量读取ConfigMap
#
1.1 ConfigMap文件编写
#
---
apiVersion: v1
kind: ConfigMap
metadata:
name: test-cm
namespace: test
data:
nacos.port: "5004"
nacos.addr: "nacos-0.nacos-headless.test.svc.cluster.local:8848"
mysql.ip: "172.16.2.227"
mysql.port: "3306"
mysql.user: "root"
mysql.passwd: "root"
1.2 pod.yaml使用configmap
#
- 直接从环境变量读取通过configmap设置的参数值
apiVersion: v1
kind: Pod
metadata:
name: bd
namespace: test
labels:
app: bd-label
spec:
containers:
- name: bd
image: test/bd:1.0.17
imagePullPolicy: IfNotPresent
command: [ "/bin/sh", "-c" ]
args:
- echo "start~~~";
sh /bd-server-1.0.17/bin/upgrade_db.sh;
echo "start upgrade_db success~~~";
sh /bd-server-1.0.17/bin/start.sh --drun;
echo "start success~~~";
resources:
requests:
cpu: "2"
memory: 2000Mi
limits:
cpu: "4"
memory: 6000Mi
ports:
- name: http
containerPort: 5004
env:
- name: PORT
valueFrom:
configMapKeyRef:
name: test-cm
key: nacos.port
- name: NACOS_SERVER_ADDRESS
valueFrom:
configMapKeyRef:
name: test-cm
key: nacos.addr
2. 设置pod以配置文件形式挂载ConfigMap
#
2.1 通过配置文件生成ConfigMap
#
kubectl create configmap bd-cm1 --from-file=yarn-site.xml --from-file=hdfs-site.xml -n test
2.2 通过pod挂载卷的形式挂载ConfigMap的配置文件到pod指定目录
#
apiVersion: v1
kind: Pod
metadata:
name: bd
namespace: test
labels:
app: bd-label
spec:
hostAliases:
- ip: "172.16.3.33"
hostnames:
- "master01"
volumes:
- name: bd-cm
configMap:
name: bd-cm
containers:
- name: bd
image: test/bd:1.0.17
imagePullPolicy: IfNotPresent
command: [ "/bin/sh", "-c" ]
args:
- echo "start~~~";
sh /bd-server-1.0.17/bin/upgrade_db.sh;
echo "start upgrade_db success~~~";
sh /bd-server-1.0.17/bin/start.sh --drun;
echo "start success~~~";
resources:
requests:
cpu: "2"
memory: 2000Mi
limits:
cpu: "4"
memory: 6000Mi
ports:
- name: http
containerPort: 5004
volumeMounts:
- mountPath: /hadoop/conf
name: bd-cm
env:
- name: PORT
valueFrom:
configMapKeyRef:
name: test-cm
key: nacos.port
- name: NACOS_SERVER_ADDRESS
valueFrom:
configMapKeyRef:
name: test-cm
key: nacos.addr
- name: master01
value: "172.16.3.33"
kubectl get configmaps bd-cm -o yaml -n test
kubectl delete configmap bd-cm -n test
