Centos7安装轻量级TCP转发工具rinetd注册为服务的正确姿势 并设置开机自启 实践笔记 自用

#安装依赖
yum install gcc gcc-c++ make git -y
#克隆源码
git clone https://github.com/boutell/rinetd.git
#进入rinetd源码目录
cd rinetd
#创建手册目录
mkdir -p /usr/man/man8
#编译安装
make && make install

[root@localhost rinetd]# mkdir -p /usr/man/man8
[root@localhost rinetd]# make && make install
cc -DLINUX -g   -c -o rinetd.o rinetd.c
rinetd.c:176:6: 警告：与内建函数‘log’类型冲突 [默认启用]
 void log(int i, int coSe, int result);
      ^
cc -DLINUX -g   -c -o match.o match.c
cc rinetd.o match.o -o rinetd
install -m 700 rinetd /usr/sbin
install -m 644 rinetd.8 /usr/man/man8
[root@localhost rinetd]#

[root@localhost rinetd]# /usr/sbin/rinetd -v
rinetd 0.62

#导出手册
man rinetd  > rinetd.txt

#创建rinetd相关文件夹
mkdir /usr/local/rinetd /usr/local/rinetd/sbin /usr/local/rinetd/etc/ /usr/local/rinetd/log
#移动可执行文件
mv  /usr/sbin/rinetd  /usr/local/rinetd/sbin
#编辑配置文件 
vim /usr/local/rinetd/etc/rinetd.conf

#配置文件内容
#vim /usr/local/rinetd/etc/rinetd.conf
#
0.0.0.0 3306 192.168.0.110 3306
#0.0.0.0 3306 3a9f2f27648e4c85a9c5d2e7fba12ae0in01.internal.cn-north-4.mysql.rds.myhuaweicloud.com 3306
0.0.0.0 6379 redis-47c5c0d-dcs-ps4e.dcs.huaweicloud.com 6379
logfile /usr/local/rinetd/log/rinetd.log

0.0.0.0 3306 192.168.0.110 3306 
0.0.0.0            --- 源IP
3306               --- 源端口
192.168.0.110      --- 目标IP
3306               --- 目标端口
上面配置的意思是将本机3306端口转发到192.168.0.110的3306端口

vim  /lib/systemd/system/rinetd.service

[Unit]
Description=Rinetd Daemon
After=network.service
Wants=network.service
[Service]
Type=forking
PIDFile=/var/run/rinetd.pid
ExecStart=/usr/local/rinetd/sbin/rinetd -c /usr/local/rinetd/etc/rinetd.conf
Restart=on-failure
[Install]
WantedBy=multi-user.target

#重新加载
systemctl  daemon-reload
#开机自启rinetd
systemctl enable rinetd.service   

systemctl enable rinetd.service    //开机自启rinetd

systemctl disable rinetd.service    //禁用开机自启rinetd

systemctl start rinetd.service    //启动rinetd

systemctl stop rinetd.service    //关闭rinetd   

systemctl restart rinetd.service   //重启rinetd 

systemctl status rinetd.service   //查看状态rinetd