今天完成的事情： 

上半天：

学习tomcat，shell，nginx

下半天：

今天有点水，连一个软件都安装配置不成功，，

卡就卡在了var这个软件

遇到的问题： 

Failed to start nginx.service: Unit not found.

https://www.cnblogs.com/ansibee/p/8087476.html

#!/bin/sh

# nginx - this script starts and stops the nginx daemin

#

# chkconfig:   - 85 15

# description:  Nginx is an HTTP(S) server, HTTP(S) reverse \

#               proxy and IMAP/POP3 proxy server

# processname: nginx

# config:      /usr/local/nginx/conf/nginx.conf

# pidfile:     /usr/local/nginx/logs/nginx.pid

# Source function library.

. /etc/rc.d/init.d/functions

# Source networking configuration.

. /etc/sysconfig/network

# Check that networking is up.

[ "$NETWORKING" = "no" ] && exit 0

nginx="/usr/local/nginx/sbin/nginx"

prog=$(basename $nginx)

NGINX_CONF_FILE="/usr/local/nginx/conf/nginx.conf"

lockfile=/var/lock/subsys/nginx

start() {

    [ -x $nginx ] || exit 5

    [ -f $NGINX_CONF_FILE ] || exit 6

    echo -n $"Starting $prog: "

    daemon $nginx -c $NGINX_CONF_FILE

    retval=$?

    echo

    [ $retval -eq 0 ] && touch $lockfile

    return $retval

}

stop() {

    echo -n $"Stopping $prog: "

    killproc $prog -QUIT

    retval=$?

    echo

    [ $retval -eq 0 ] && rm -f $lockfile

    return $retval

}

restart() {

    configtest || return $?

    stop

    start

}

reload() {

    configtest || return $?

    echo -n $"Reloading $prog: "

    killproc $nginx -HUP

    RETVAL=$?

    echo

}

force_reload() {

    restart

}

configtest() {

  $nginx -t -c $NGINX_CONF_FILE

}

rh_status() {

    status $prog

}

rh_status_q() {

    rh_status >/dev/null 2>&1

}

case "$1" in

    start)

        rh_status_q && exit 0

        $1

        ;;

    stop)

        rh_status_q || exit 0

        $1

        ;;

    restart|configtest)

        $1

        ;;

    reload)

        rh_status_q || exit 7

        $1

        ;;

    force-reload)

        force_reload

        ;;

    status)

        rh_status

        ;;

    condrestart|try-restart)

        rh_status_q || exit 0

            ;;

    *)

        echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload|configtest}"

        exit 2

esac

var，

安装easy-rsa3，是没有这个var，安装easy-rsa2，有var这个文件

完全可以跳过配置var这步骤

收获：

easy-rsa3中，少了2版本中的许多执行文件，只剩下easyrsa一个执行文件。。。比如 var。。我今天就吃亏在这点！！！浪费了一天

CentOS 7 安装openvpn：

https://www.dwhd.org/20160614_044415.html

https://cloud.tencent.com/developer/article/1026294

https://blog.csdn.net/zhemeban/article/details/69665985

https://www.cnblogs.com/fengjian2016/p/6904415.html

https://www.landui.com/help/show-7514.html

http://ju.outofmemory.cn/entry/71676

https://www.cnblogs.com/hjfeng1988/p/5702594.html

https://blog.csdn.net/rdcxuly/article/details/54909325

http://www.jb51.net/LINUXjishu/402416.html

https://blog.csdn.net/angle_sun/article/details/53144617

https://blog.csdn.net/orangleliu/article/details/43157955

http://blog.51cto.com/icenycmh/1867641

http://shit.name/openvpn-on-centos/

重新安装了nginx，

编译安装Nginx：

https://blog.csdn.net/u011781521/article/details/75675019

https://blog.csdn.net/shile/article/details/53355191

https://blog.csdn.net/xuguokun1986/article/details/74732833

openvpn配置文件详解：

https://blog.csdn.net/skymanwww/article/details/63707082

tomcat入门：

https://www.cnblogs.com/jingmoxukong/p/8258837.html?utm_source=gold_browser_extension

Maven:

http://www.trinea.cn/android/maven/

明天计划的事情：

 继续学习空白知识，安装软件，