systemctl-秋风落叶

标准模版

vim /etc/systemd/system/prometheus.service

[Unit]
Description=Prometheus
Wants=network-online.target
After=network-online.target

[Service]
User=prometheus
Group=prometheus
Type=simple
ExecStart=/usr/local/bin/prometheus --config.file=/etc/prometheus/prometheus.yml --storage.tsdb.path=/prometheus/data
Restart=on-failure
RestartSec=5s
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target

参数说明：

[Unit]
Description：服务的描述
After=network.target：确保网络启动后再启动此服务

[Service] 部分定义了服务的行为，包括启动前的准备命令（ExecStartPre）、启动命令（ExecStart）、重新加载命令（ExecReload）等
ExecStart：指定脚本路径
Restart=on-failure：如果脚本因错误退出，会自动重启
User=root：使用 root 用户运行该服务（如果需要）
Environment：设置环境变量，如 LOG_FILE。确保脚本中读取 $LOG_FILE 的位置正确
RestartSec=5s 定义了在尝试重新启动之前等待的时间（秒）
LimitNOFILE=65536 设置了进程的最大文件描述符数，这对于需要处理大量时间序列数据的Prometheus来说是很重要的

[Install]
WantedBy=multi-user.target：服务将在系统的多用户目标下启动，通常为默认运行级别。

prometheus

[root@iZuf60yo2r6jhkx73c9owjZ ~]# vim /etc/systemd/system/prometheus.service

[Unit]
Description=Prometheus
Wants=network-online.target
After=network-online.target

[Service]
Type=simple
ExecStart=/www/wwwroot/wangjian.run/RuanJian/prometheus-2.53.2.linux-amd64/prometheus --config.file=/www/wwwroot/wangjian.run/RuanJian/prometheus-2.53.2.linux-amd64/prometheus.yml --storage.tsdb.path=/www/wwwroot/wangjian.run/RuanJian/prometheus-2.53.2.linux-amd64/data
Restart=on-failure
RestartSec=5s
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target

systemctl daemon-reload
systemctl enable prometheus.service
systemctl start prometheus.service
systemctl restart prometheus.service
systemctl status prometheus.service

node_exporter

[root@iZuf60yo2r6jhkx73c9owjZ ~]# vim /etc/systemd/system/node_exporter.service

[Unit]
Description=node_exporter
Wants=network-online.target
After=network-online.target

[Service]
Type=simple
ExecStart=/www/wwwroot/wangjian.run/RuanJian/node_exporter-1.8.2.linux-amd64/node_exporter
Restart=on-failure
RestartSec=5s
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target

systemctl daemon-reload
systemctl enable node_exporter.service 
systemctl status node_exporter.service 
systemctl start node_exporter.service 
systemctl restart node_exporter.service 
systemctl status node_exporter.service

nginx

[root@k8s-master conf]# vim /etc/systemd/system/nginx.service

[Unit]
Description=The NGINX HTTP Server
Wants=network-online.target
After=network-online.target

[Service]
Type=forking
PIDFile=/opt/nginx-1.26.2/logs/nginx.pid
#ExecStart=/usr/sbin/nginx -c /etc/nginx/nginx.conf
ExecStart=/opt/nginx-1.26.2/sbin/nginx
Restart=on-failure
RestartSec=5s
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target

systemctl daemon-reload
systemctl enable nginx.service
systemctl start nginx.service
systemctl status nginx.service
systemctl restart nginx.service

样例3

vim /usr/lib/systemd/system/mysqld_exporter.service

#加入如下内容
[Unit]
Description=mysqld_exporter
Documentation=https://prometheus.io/
After=network.target

[Service]
Type=simple
User=prometheus
ExecStart=/software/installs/prometheus/mysqld_exporter/bin/mysqld_exporter --config.my-cnf=/software/installs/prometheus/mysqld_exporter/cfg/.my.cnf
Restart=on-failure

[Install]
WantedBy=multi-user.target
#完成且检查无误后:wq保存并退出

样例4 redis

vim /usr/lib/systemd/system/redis_exporter.service

#加入如下内容
[Unit]
Description=redis_exporter
Documentation=https://prometheus.io/
After=network.target

[Service]
Type=simple
User=prometheus
ExecStart=/software/installs/prometheus/redis_exporter/bin/redis_exporter
Restart=on-failure

[Install]
WantedBy=multi-user.target
#完成且检查无误后:wq保存并退出

systemctl daemon-reload
systemctl enable redis_exporter.service
systemctl start redis_exporter.service

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linux命令
# linux命令