如何配置Ubuntu Tomcat日志記錄

在Ubuntu上配置Tomcat日志記錄，可以通過修改Tomcat的配置文件來實現。以下是詳細的步驟：

1. 安裝Tomcat

如果你還沒有安裝Tomcat，可以使用以下命令進行安裝：

sudo apt update
sudo apt install tomcat9

2. 找到Tomcat配置文件

Tomcat的主要配置文件位于/etc/tomcat9/目錄下。主要的日志配置文件是server.xml和logging.properties。

• server.xml：用于配置Tomcat服務器的基本設置，包括端口、連接器等。
• logging.properties：用于配置Tomcat的日志記錄。

3. 修改server.xml

打開/etc/tomcat9/server.xml文件：

sudo nano /etc/tomcat9/server.xml

找到以下部分并確保它們正確配置：

<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>
    <!-- Editable user database that can also be used by
         Tomcat's manager app and other web apps.
         If you want to use the user database for Tomcat-only purposes,
         set "developedOnly" attribute to true and don't change "resource"
         above. -->
    <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" resource="UserDatabase"/>
  </GlobalNamingResources>

  <Service name="Catalina">
    <Connector port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               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">
        <!-- SingleSignOn valve, share authentication between web applications
             Documentation at: /docs/config/valve.html -->
        <!--
        <Valve className="org.apache.catalina.authenticator.SingleSignOn" />
        -->

        <!-- Access log processes all example.
             Documentation at: /docs/config/valve.html
             To enable logging remove the <Comment> tags around this element -->
        <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
               prefix="localhost_access_log" suffix=".txt"
               pattern="%h %l %u %t "%r" %s %b" />
      </Host>
    </Engine>
  </Service>
</Server>

4. 修改logging.properties

打開/etc/tomcat9/logging.properties文件：

sudo nano /etc/tomcat9/logging.properties

你可以根據需要修改日志級別和輸出位置。例如，將所有日志級別設置為FINE：

org.apache.catalina.core.ContainerBase.[Catalina].[localhost].level = FINE
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].handlers = java.util.logging.ConsoleHandler

java.util.logging.ConsoleHandler.level = FINE
java.util.logging.ConsoleHandler.formatter = java.util.logging.SimpleFormatter

5. 重啟Tomcat

修改配置文件后，需要重啟Tomcat以使更改生效：

sudo systemctl restart tomcat9

6. 驗證日志記錄

檢查/var/log/tomcat9/目錄下的日志文件，確保日志記錄正常工作。

通過以上步驟，你應該能夠成功配置Ubuntu上的Tomcat日志記錄。根據需要，你可以進一步自定義日志格式和輸出位置。