Debian环境下Tomcat如何更新升级

<code>sudo cp -r /opt/tomcat /opt/tomcat_backup</code>

<code>wget https://downloads.apache.org/tomcat/tomcat-9/v9.0.76/bin/apache-tomcat-9.0.76.tar.gz</code>

<code>sudo systemctl stop tomcat</code>

<code>sudo rm -rf /opt/tomcat/apache-tomcat-9.0.76</code>

<code>sudo tar -xvf apache-tomcat-9.0.76.tar.gz -C /opt/tomcat --strip-components 1</code>

<code>sudo ln -s /opt/tomcat/apache-tomcat-9.0.76 /opt/tomcat/latest</code>

<code>echo 'export CATALINA_HOME=/opt/tomcat/latest' | sudo tee -a /etc/profile
source /etc/profile</code>

<code>sudo nano /etc/systemd/system/tomcat.service</code>

<code>[Unit]
Description=Apache Tomcat Web Application Container
After=network.target

[Service]
Type=forking

Environment=JAVA_HOME=/usr/lib/jvm/default-java
Environment=CATALINA_PID=/opt/tomcat/temp/tomcat.pid
Environment=CATALINA_HOME=/opt/tomcat/apache-tomcat-9.0.76
Environment=CATALINA_BASE=/opt/tomcat
Environment='CATALINA_OPTS=-Xms512M -Xmx1024M -server -XX:UseParallelGC'
Environment='JAVA_OPTS=-Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom'

ExecStart=/opt/tomcat/bin/startup.sh
ExecStop=/opt/tomcat/bin/shutdown.sh
Restart=always

[Install]
WantedBy=multi-user.target</code>

<code>sudo systemctl daemon-reload</code>

<code>sudo systemctl start tomcat</code>