apiVersion: v1
kind: ConfigMap
metadata:name: cm-appvars
data:apploglevel: infoappdatadir: /var/data

将两个配置文件server.xml和logging.properties定义为ConfigMap:  

apiVersion: v1
kind: ConfigMap
metadata:name: cm-appconfigfiles
data:key-serverxml: |<?xml version='1.0' encoding='utf-8'?><Server port="8005" shutdown="SHUTDOWN"><Listener className="org.apache.catalina.startup.VersionLoggerListener" /><Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" /><Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" /><Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" /><Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" /><GlobalNamingResources><Resource name="UserDatabase" auth="Container"type="org.apache.catalina.UserDatabase"description="User database that can be updated and saved"factory="org.apache.catalina.users.MemoryUserDatabaseFactory"pathname="conf/tomcat-users.xml" /></GlobalNamingResources><Service name="Catalina"><Connector port="8080" protocol="HTTP/1.1"connectionTimeout="20000"redirectPort="8443" /><Connector port="8009" protocol="AJP/1.3" redirectPort="8443" /><Engine name="Catalina" defaultHost="localhost"><Realm className="org.apache.catalina.realm.LockOutRealm"><Realm className="org.apache.catalina.realm.UserDatabaseRealm"resourceName="UserDatabase"/></Realm><Host name="localhost"  appBase="webapps"unpackWARs="true" autoDeploy="true"><Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"prefix="localhost_access_log" suffix=".txt"pattern="%h %l %u %t &quot;%r&quot; %s %b" /></Host></Engine></Service></Server>key-loggingproperties: "handlers= 1catalina.org.apache.juli.FileHandler, 2localhost.org.apache.juli.FileHandler,3manager.org.apache.juli.FileHandler, 4host-manager.org.apache.juli.FileHandler,java.util.logging.ConsoleHandler\r\n\r\n.handlers = 1catalina.org.apache.juli.FileHandler,java.util.logging.ConsoleHandler\r\n\r\n1catalina.org.apache.juli.FileHandler.level= FINE\r\n1catalina.org.apache.juli.FileHandler.directory = ${catalina.base}/logs\r\n1catalina.org.apache.juli.FileHandler.prefix= catalina.\r\n\r\n2localhost.org.apache.juli.FileHandler.level = FINE\r\n2localhost.org.apache.juli.FileHandler.directory= ${catalina.base}/logs\r\n2localhost.org.apache.juli.FileHandler.prefix = localhost.\r\n\r\n3manager.org.apache.juli.FileHandler.level= FINE\r\n3manager.org.apache.juli.FileHandler.directory = ${catalina.base}/logs\r\n3manager.org.apache.juli.FileHandler.prefix= manager.\r\n\r\n4host-manager.org.apache.juli.FileHandler.level = FINE\r\n4host-manager.org.apache.juli.FileHandler.directory= ${catalina.base}/logs\r\n4host-manager.org.apache.juli.FileHandler.prefix =host-manager.\r\n\r\njava.util.logging.ConsoleHandler.level = FINE\r\njava.util.logging.ConsoleHandler.formatter= java.util.logging.SimpleFormatter\r\n\r\n\r\norg.apache.catalina.core.ContainerBase.[Catalina].[localhost].level= INFO\r\norg.apache.catalina.core.ContainerBase.[Catalina].[localhost].handlers= 2localhost.org.apache.juli.FileHandler\r\n\r\norg.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/manager].level= INFO\r\norg.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/manager].handlers= 3manager.org.apache.juli.FileHandler\r\n\r\norg.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/host-manager].level= INFO\r\norg.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/host-manager].handlers= 4host-manager.org.apache.juli.FileHandler\r\n\r\n"

kubectl create config NAME --from-file=[key=] source --from-file=[key=] source

kubectl create configmap NAME --from-file=config-files-dir

kubectl create configmap NAME --from-literal=key1=value1 --from-literal=key2=value2

apiVersion: v1
kind: Pod
metadata:name: cm-test-pod
spec:containers:- name: cm-testimage: busyboxcommand: [ "/bin/sh", "-c", "env | grep APP" ]env:- name: APPLOGLEVEL        #定义环境变量的名称valueFrom:configMapKeyRef:name: cm-appvars    #环境变量取自cm-appvarskey: apploglevel    #key为apploglevel对应的值- name: APPDATADIR        #定义环境变量名称valueFrom:configMapKeyRef:name: cm-appvars   #环境变量取自cm-appvarskey: appdatadir    #key为appdatadirrestartPolicy: Never

apiVersion: v1
kind: Pod
metadata:name: cm-test-pod
spec:containers:- name: cm-testimage: busyboxcommand: [ "/bin/sh", "-c", "env" ]envFrom:- configMapRefname: cm-appvars   #根据cm-appvars自动生成环境变量restartPolicy: Never

apiVersion: v1
kind: Pod
metadata:name: cm-test-app
spec:containers:- name: cm-test-appimage: kubeguide/tomcat-app:v1ports:- containerPort: 8080volumeMounts:- name: serverxml             #引用volume的名称mountPath: /configfiles     #挂载到容器内的目录volumes:- name: serverxml               #定义volume的名称configMap:name: cm-appconfigfiles     #使用ConfigMap “cm-appconfigfiles”items:- key: key-serverxml       #使用key=key-serverxmlpath: server.xml         #value将 server.xml进行挂载- key: key-loggingproperties #使用key=key-loggingpropertiespath: logging.properties   #value将logging.properties进行挂载