Centos安装JAVA环境

• 创建用户

# adduser 【你的用户名称】
# passwd 【你的用户名称】

• 创建并加入用户组（dev）

# groupadd dev
# usermod -G dev 【你的用户名称】

• 查看用户及用户组

# vi /etc/passwd
# vi /etc/group

• 创建并修改项目部署目录（/data）的用户组和权限

# mkdir /data
# chown -R :dev /data
# chmod -R 775 /data

• 上传并安装JDK

mkdir -p /usr/java
rpm -ivh jdk-8u101-linux-x64.rpm

• 配置环境变量

# vi /etc/profile
shift+g //定位到文档最后一行
gg //定位到文档第一行

export JAVA_HOME=/usr/java/jdk1.8.0_101
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin

# source /etc/profile
# java –version

• 解决tomcat启动慢的问题

# vi $JAVA_PATH/jre/lib/security/java.security

securerandom.source=file:/dev/random
替换成
securerandom.source=file:/dev/urandom

• 安装Kafka

# tar -zxvf kafka_2.11-0.10.1.0.tgz

# mv kafka_2.11-0.10.1.0 /usr/local/kafka

# vi /usr/local/kafka/config/server.properties

//修改listeners=PLAINTXT://192.168.0.125(对应application.xml):9092
listeners=PLAINTXT://localhost:9092

//修改zookeeper.connect=192.168.0.125(对应application.xml):2181
zookeeper.connect=localhost:2181

# sudo firewall-cmd --zone=public --add-port=9092/tcp --permanent
# sudo firewall-cmd --zone=public --add-port=2181/tcp --permanent
# sudo firewall-cmd --reload

//启动zookeeper: 
#  /usr/local/kafka/bin/zookeeper-server-start.sh -daemon /usr/local/kafka/config/zookeeper.properties

//关闭zookeeper: 
# /usr/local/kafka/bin/zookeeper-server-stop.sh

//启动kafka服务: 
# /usr/local/kafka/bin/kafka-server-start.sh -daemon /usr/local/kafka/config/server.properties

//关闭kafka服务: 
# /usr/local/kafka/bin/kafka-server-stop.sh

• 安装nginx

// 安装 openssl
# yum -y install openssl openssl-devel
// 找到openssl安装路径
# whereis openssl
//创建源码目录
# mkdir -p /usr/nginx
// 解压
# tar zxvf nginx-1.10.1.tar.gz
//进入源码目录
# cd nginx-1.10.1
//编译
# ./configure --with-openssl=/usr/include/openssl/
//安装
# make && make install
//启动
# /usr/local/nginx/sbin/nginx
//查看进程
# ps -ef | grep nginx
//将nginx做成系统服务
# vi /etc/init.d/nginx

#! /bin/sh
# chkconfig: 2345 55 25
# Description: Startup script for nginx webserver on Debian. Place in /etc/init.d and
# run 'update-rc.d -f nginx defaults', or use the appropriate command on your
# distro. For CentOS/Redhat run: 'chkconfig --add nginx'

### BEGIN INIT INFO
# Provides:          nginx
# Required-Start:    $all
# Required-Stop:     $all
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts the nginx web server
# Description:       starts nginx using start-stop-daemon
### END INIT INFO

# Author:   licess
# website:  http://lnmp.org

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
NAME=nginx
NGINX_BIN=/usr/local/nginx/sbin/$NAME
CONFIGFILE=/usr/local/nginx/conf/$NAME.conf
PIDFILE=/usr/local/nginx/logs/$NAME.pid

case "$1" in
    start)
        echo -n "Starting $NAME... "

        if netstat -tnpl | grep -q nginx;then
            echo "$NAME (pid `pidof $NAME`) already running."
            exit 1
        fi

        $NGINX_BIN -c $CONFIGFILE

        if [ "$?" != 0 ] ; then
            echo " failed"
            exit 1
        else
            echo " done"
        fi
        ;;

    stop)
        echo -n "Stoping $NAME... "

        if ! netstat -tnpl | grep -q nginx; then
            echo "$NAME is not running."
            exit 1
        fi

        $NGINX_BIN -s stop

        if [ "$?" != 0 ] ; then
            echo " failed. Use force-quit"
            exit 1
        else
            echo " done"
        fi
        ;;

    status)
        if netstat -tnpl | grep -q nginx; then
            PID=`pidof nginx`
            echo "$NAME (pid $PID) is running..."
        else
            echo "$NAME is stopped"
            exit 0
        fi
        ;;

    force-quit)
        echo -n "Terminating $NAME... "

        if ! netstat -tnpl | grep -q nginx; then
            echo "$NAME is not running."
            exit 1
        fi

        kill `pidof $NAME`

        if [ "$?" != 0 ] ; then
            echo " failed"
            exit 1
        else
            echo " done"
        fi
        ;;

    restart)
        $0 stop
        sleep 1
        $0 start
        ;;

    reload)
        echo -n "Reload service $NAME... "

        if netstat -tnpl | grep -q nginx; then
            $NGINX_BIN -s reload
            echo " done"
        else
            echo "$NAME is not running, can't reload."
            exit 1
        fi
        ;;

    configtest)
        echo -n "Test $NAME configure files... "

        $NGINX_BIN -t
        ;;

    *)
        echo "Usage: $0 {start|stop|force-quit|restart|reload|status|configtest}"
        exit 1
        ;;

esac

# chkconfig --add nginx
# chmod +x /etc/init.d/nginx
# service nginx start
# service nginx restart
//开机启动
# systemctl enable nginx

//添加shell别名
# alias nginx="/usr/local/nginx/sbin/nginx"

//CentOS默认禁用了80端口
// 开启http服务：
# firewall-cmd --permanent --zone=public --add-service=http
// 重启防火墙：
# firewall-cmd --reload

• 安装tomcat

# cd /home/[你的用户名称]
 // 下载并解压tomcat压缩包
# tar -zxvf apache-tomcat-7.0.29.tar.gz
# mv apache-tomcat-7.0.29 /usr/local/tomcat
//打开端口
# sudo firewall-cmd --zone=public --permanent --add-port=8080/tcp
# sudo firewall-cmd --reload
//启动tomcat
# /usr/local/tomcat/bin/startup.sh