java 如何在Linux上升级Tomcat
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How to upgrade Tomcat on linux
提问by Hyman
My current running Tomcat is as following
我目前运行的Tomcat如下
Tomcat Version : Apache Tomcat/5.5.36
Servlet Specification Version : 2.4
JSP version : 2.0
I need to change it to
我需要把它改成
Tomcat Version : Apache Tomcat/8.0.14
Servlet Specification Version : 3.1
JSP version : 2.3
I downloaded Tomcat version 8 and I have following, how can I run Tomcat 8 and make it default of the server?
我下载了 Tomcat 版本 8，我有以下内容，如何运行 Tomcat 8 并使其成为服务器的默认值？
root@server [/opt]# ls
./ cpanel/ pcre/
../ curlssl/ php_with_imap_client/
apache-tomcat-8.0.18/ jdk1.7.0_75/ suphp/
apache-tomcat-8.0.18.tar.gz jdk-7u75-linux-x64.tar.gz xml2/
I tried following command but it failed.
我尝试了以下命令，但失败了。
root@server [/opt/apache-tomcat-8.0.18/bin]# ./startup.sh
Cannot find apache-tomcat-8.0.18/bin/setclasspath.sh
This file is needed to run this program
~/.bashrc
~/.bashrc
# .bashrc
# User specific aliases and functions
alias rm='rm -i'
alias cp='cp -i'
alias mv='mv -i'
# Source global definitions
if [ -f /etc/bashrc ]; then
. /etc/bashrc
fi
JAVA_HOME="/usr/lib/jvm/jre-1.7.0-openjdk.x86_64"
export JAVA_HOME
PATH=$JAVA_HOME/bin:$PATH
export PATH
export CATALINA_HOME="apache-tomcat-8.0.18"
Java Version
爪哇版
java -version
java version "1.7.0_75"
OpenJDK Runtime Environment (rhel-2.5.4.0.el6_6-x86_64 u75-b13)
OpenJDK 64-Bit Server VM (build 24.75-b04, mixed mode)
root@server [/opt/apache-tomcat-8.0.18/bin]#
O/S
操作系统
Linux server.myproject.com 2.6.32-220.13.1.el6.x86_64 #1 SMP Tue Apr 17
23:56:34 BST 2012 x86_64 x86_64 x86_64 GNU/Linux
回答by mysteryegg
The Tomcat startup.sh script uses $CATALINA_HOME to find setclasspath.sh, which is the cause of your failed startup. Therefore, $CATALINA_HOME needs to be an absolute path to your tomcat installation directory, e.g.
Tomcat startup.sh 脚本使用 $CATALINA_HOME 查找 setclasspath.sh，这是您启动失败的原因。因此，$CATALINA_HOME 需要是你的 tomcat 安装目录的绝对路径，例如
export CATALINA_HOME="/opt/apache-tomcat-8.0.18"
export CATALINA_HOME="/opt/apache-tomcat-8.0.18"
If you plan on upgrading again, you might consider setting $CATALINA_HOME to /opt/tomcat, then you would create a symbolic link from /opt/tomcat to /opt/apache-tomcat-8.0.18 or whatever future version you end up installing. Since you will likely have multiple environmental variables pointing to your tomcat directory, this gives you a single change point when updating references.
如果您打算再次升级，您可以考虑将 $CATALINA_HOME 设置为 /opt/tomcat，然后您将创建一个从 /opt/tomcat 到 /opt/apache-tomcat-8.0.18 或您最终安装的任何未来版本的符号链接. 由于您可能有多个环境变量指向您的 tomcat 目录，因此在更新引用时为您提供了一个更改点。
ln -nsf /opt/apache-tomcat-8.0.18 /opt/tomcat
ln -nsf /opt/apache-tomcat-8.0.18 /opt/tomcat
