Server:
Server只能有一個(gè),它代表整個(gè)JVM,server可以包含一個(gè)或者多個(gè)service
Service:
service包含一個(gè)或者多個(gè)connector和container。
Conector:
connector用來為container接收請(qǐng)求,和返回響應(yīng)的。
Engine:
engine是頂層container,它可以包含一個(gè)或者多個(gè)host
Host:
host是虛擬主機(jī),它可以包含一個(gè)或者多個(gè)context
Context:
context對(duì)應(yīng)一個(gè)web application。
最近抽時(shí)間研究了一下tomcat的源碼,發(fā)現(xiàn)可以增加多個(gè)Service到server.xml中,實(shí)現(xiàn)在tomcat中跑多個(gè)服務(wù)器實(shí)例,在Server.xml中增加如下配置信息:
Xml代碼
<Service name="Catalina2">
<Connector port="8081"
maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="100"
debug="0" connectionTimeout="20000"
disableUploadTimeout="true" />
<Connector port="8010"
enableLookups="false" redirectPort="8443" debug="0"
protocol="AJP/1.3" />
<Engine name="Catalina" defaultHost="localhost" debug="0">
<Logger className="org.apache.catalina.logger.FileLogger"
prefix="catalina2_log." suffix=".txt"
timestamp="true"/>
<Realm className="org.apache.catalina.realm.UserDatabaseRealm"
debug="0" resourceName="UserDatabase"/>
<Host name="localhost" debug="0" appBase="webapps2"
unpackWARs="true" autoDeploy="true"
xmlValidation="false" xmlNamespaceAware="false">
<Logger className="org.apache.catalina.logger.FileLogger"
directory="logs" prefix="localhost2_log." suffix=".txt"
timestamp="true"/>
</Host>
</Engine>
</Service>
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