Linux系统-redis集群、nacos、nginx、keepalived、mysql开机自启

一、Redis集群开机自启：
如三主三从交叉式redis集群，有两个方法，自行选择。
方法一：

第一步：分别在各节点添加以下redis.service文件
命令：vim /lib/systemd/system/redis_6379.service
添加：

[Unit]
Description=Redis persistent key-value database
After=network.target
After=network-online.target
Wants=network-online.target

[Service]
Type=forking
ExecStart=/usr/local/redis/bin/redis-server /home/redis/redis6379.conf
ExecReload=/usr/local/redis/bin/redis-server -s reload
ExecStop=/usr/local/redis/bin/redis-server -s stop
PrivateTmp=true

User=redis
Group=redis

[Install]
WantedBy=multi-user.target

命令：vim /lib/systemd/system/redis_6380.service
添加：

[Unit]
Description=Redis persistent key-value database
After=network.target
After=network-online.target
Wants=network-online.target

[Service]
Type=forking
ExecStart=/usr/local/redis/bin/redis-server /home/redis/redis6380.conf
ExecReload=/usr/local/redis/bin/redis-server -s reload
ExecStop=/usr/local/redis/bin/redis-server -s stop
PrivateTmp=true

User=redis
Group=redis

[Install]
WantedBy=multi-user.target

注意以上按自己的实际路径添加

第二步，重启服务
依次执行以下命令

systemctl enable redis     # 设置redis开机自启动
ps -ef |grep redis
kill -9 pid
systemctl start redis      # 启动redis服务
systemctl status redis     # 查看redis服务状态

参考命令：
systemctl stop redis # 停止redis服务
systemctl restart redis # 重启redis服务
systemctl daemon-reload # 重启所有服务

第三步：验证
命令：reboot

方法二：

第一步，添加rc.local文件内容
命令：vim /etc/rc.d/rc.local
在结尾添加：

/usr/local/redis/bin/redis-server   /home/redis/redis6379.conf &
/usr/local/redis/bin/redis-server   /home/redis/redis6380.conf &

第二步：添加执行权限：chmod +x /etc/rc.d/rc.local
第三步：验证：reboot

二、nacos集群配置开机自启
第一步：各节点服务器创建/lib/systemd/system/nacos.service文件
命令：vim /lib/systemd/system/nacos.service
添加：

[Unit]
Description=nacos
After=network.target

[Service]
# java安装位置
Environment="JAVA_HOME=/usr/local/jdk1.8.0_341"
Type=forking
ExecStart=/usr/local/nacos/bin/startup.sh
ExecReload=/usr/local/nacos/bin/shutdown.sh
ExecStop=/usr/local/nacos/bin/shutdown.sh
PrivateTmp=true


[Install]
WantedBy=multi-user.target
![](https://img2024.cnblogs.com/blog/3426651/202407/3426651-20240723174231714-1902871039.png)

第二步，重启服务
依次执行以下命令

cd /usr/local/nacos/bin/ && ./shutdown.sh   停nacos
systemctl enable nacos     # 设置nacos开机自启动
systemctl start nacos      # 启动nacos服务
systemctl status nacos     # 查看nacos服务状态

参考命令：

systemctl stop nacos      # 停止nacos服务
systemctl restart nacos    # 重启nacos服务
systemctl daemon-reload   # 重启所有服务

三、nginx集群配置开机自启
各节点服务器配置nginx开机启动

sudo vim /etc/rc.d/rc.local
添加执行语句/usr/bin/nginx
退出保存
开机启动文件授权
sudo chmod +x /etc/rc.d/rc.local

四、keepalived多节点配置开机自启

systemctl status keepalived    检查服务的当前状态
systemctl enable keepalived    设置开机自启
systemctl is-enabled keepalived 验证服务是否已设置为开机自启

systemctl is-enabled keepalived 并得到 enabled 的结果意味着 keepalived 服务已经被配置为在系统启动时自动启动
参考命令：

启动：systemctl start keepalived
停止：systemctl stop keepalived
重启：systemctl  restart keepalived

五、mysql配置开机自启
systemctl enable keepalived 设置开机自启
参考命令：

启动：systemctl start keepalived
停止：systemctl stop keepalived
重启：systemctl  restart keepalived
systemctl status keepalived    检查服务的当前状态
systemctl is-enabled keepalived 验证服务是否已设置为开机自启