安裝Tomcat

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1、安裝JDK

[root@tomcat ~]# rpm -ivh jdk-8u121-linux-x64.rpm

[root@tomcat jdk1.8.0_121]# tail -2 /etc/profile

export JAVA_HOME=/usr/java/jdk1.8.0_121

export PATH=$PATH:$JAVA_HOME/bin

[root@tomcat jdk1.8.0_121]# source /etc/profile

[root@tomcat jdk1.8.0_121]# java -version

java version "1.8.0_121"

Java(TM) SE Runtime Environment (build 1.8.0_121-b13)

Java HotSpot(TM) 64-Bit Server VM (build 25.121-b13, mixed mode)

[root@tomcat jdk1.8.0_121]#

2、安裝tomcat

[root@tomcat ~]# tar zxf apache-tomcat-8.5.12.tar.gz -C /usr/local/

[root@tomcat ~]# ls /usr/local/

apache-tomcat-8.5.12? bin? etc? games? include? lib? lib64? libexec? sbin? share? src

[root@tomcat ~]#

[root@tomcat ~]# ln -s /usr/local/apache-tomcat-8.5.12? /usr/local/tomcat

[root@tomcat ~]# vim /etc/profile

export CATALINA_HOME=/usr/local/tomcat

[root@tomcat ~]# source /etc/profile

tomcat目錄介紹

/usr/local/tomcat/bin 工具(二進(jìn)制程序)

/usr/local/tomcat/conf 配置文件? ? server.xml

/usr/local/tomcat/logs

/usr/local/tomcat/webapps 默認(rèn)的應(yīng)用程序目錄

啟動tomcat

[root@tomcat ~]# /usr/local/tomcat/bin/startup.sh

Using CATALINA_BASE:? /usr/local/tomcat

Using CATALINA_HOME:? /usr/local/tomcat

Using CATALINA_TMPDIR: /usr/local/tomcat/temp

Using JRE_HOME:? ? ? ? /usr/java/jdk1.8.0_121

Using CLASSPATH:? ? ? /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar

Tomcat started.

[root@tomcat ~]# ss -antp | grep java

LISTEN? ? 0? ? ? 100? ? ? ? :::8009? ? ? ? ? ? ? ? ? ? :::*? ? ? ? ? ? ? ? ? users:(("java",pid=2627,fd=47))

LISTEN? ? 0? ? ? 100? ? ? ? :::8080? ? ? ? ? ? ? ? ? ? :::*? ? ? ? ? ? ? ? ? users:(("java",pid=2627,fd=46))

http://192.168.122.101:8080/

================增加熵池大小，解決Tomcat在CentOS 7巨慢的問題=================================================

[root@tomcat ~]# cp /usr/lib/systemd/system/rngd.service /etc/systemd/system

[root@tomcat ~]# vim /etc/systemd/system/rngd.service

[Service]

ExecStart=/sbin/rngd -f -r /dev/urandom

[root@tomcat ~]# systemctl daemon-reload

[root@tomcat ~]# systemctl restart rngd

[root@tomcat ~]# cat /proc/sys/kernel/random/entropy_avail

2979

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