refer to:
- systemctl basic operation command: https://my.oschina.net/u/3497124/blog/1439293
- Basic usage: https://linux.cn/article-5926-1.html
- Configuration instructions: https://blog.linuxeye.com/400.html
- Instructions in English: https://www.freedesktop.org/software/systemd/man/systemd.service.html
- Full instructions (in English): https://www.digitalocean.com/community/tutorials/understanding-systemd-units-and-unit-files
Configuration parameter description:
-
symbol “@”
- Template and Instance Unit Names
- http://superuser.com/questions/393423/the-symbol-and-systemctl-and-vsftpd
- Use @ to parameterize the service name. When a service has multiple instances on a machine, if you do not want to generate multiple service names, you can control it through parameters. The content after the %i proxy service name @ is used in the configuration file. Such as systemctl start mysql @3306 , %i is 3306
-
[unit]
- Description: Service description, displayed when printing the service
- After: Dependent service, must be started after the dependent service is started
- syslog.target, syslog service
- network.target, network service
-
[service]
- User: start user
- Group: start user group
- type: startup method,
- simple (default)
- forking (a process that automatically enters the background after startup, you need to use this method)
- Other methods are generally not used
- ExecStart: start method
- ExecStop: stop method
- PIDFILE: Specify the pid file to monitor the process status. When type=forking, it must be specified
- Restart: restart condition,
- always reboot, even if systemctl stop is turned off
- on-success, when exiting successfully
- on-failure, the process exit status is abnormal, the default is 0, you can use SuccessExitStatus to specify
- on-abnormal, process timeout, user canceled, watchdog
- on-watchdog, when the watchdog shuts down the process
- on-abort, user cancels
- no, no restart, default
- PrivateTmp: Allocate a separate temporary space for a process
-
[install]
- WantedBy, how the current service is loaded
Applications
Precautions:
- Use absolute path to command in ".service" file
- When the service has a specific running user, the running environment needs to be specified: user, group, environmentfile
- Adjust the use of parameters according to the characteristics of the service
1. Systemctl adds mysql service "@" to manage multiple instances
This script is used in an environment where multiple mysql instances are started. If you want to manage a single MySQL process, you only need to replace "%i" with specific parameters (mysql single instance management can refer to: http://blog.csdn.net /shen2308/article/details/78492460).
[Unit]
Description=MySQL Multi Server for instance %i
After=syslog.target
After=network.target
[Service]
User=mysql
Group=mysql
Type=forking
ExecStart=/usr/bin/mysqld_multi start %i
ExecStop=/usr/bin/mysqld_multi stop %i
Restart=always
PrivateTmp=true
[Install]
WantedBy=multi-user.target
#管理命令
systemctl start/stop/status/restart [email protected]
2. systemctl add tomcat service
[Unit]
Description=Tomcat of rapapi
After=syslog.target network.target
[Service]
#指定用户
User=root
Group=root
Type=forking
#因为tomcat使用信号管理进程，所以需要指定pid文件
PIDFile=/usr/share/apache-tomcat-7.0.72/tomcat.pid
ExecStart=/usr/share/apache-tomcat-7.0.72/bin/startup.sh
ExecReload=/bin/kill -s HUP $MAINPID
ExecStop=/bin/kill -s QUIT $MAINPID
PrivateTmp=true
Restart=on-failure
RestartSec=10
[Install]
WantedBy=multi-user.target
Administrative command: systemctl start/stop/status/restart ProcessName.service
3. systemctl add jenkins service
[Unit]
Description=Jenkins Control With Resin
After=syslog.target
After=network.target
[Service]
User=root
Group=root
ExecStart=/bin/bash /root/resin-3.1.12/bin/httpd.sh
Restart=on-failure
RestartSec=10
[Install]
WantedBy=multi-user.target
4. systemctl add redmine service
[Unit]
Description=Redmine Control
After=syslog.target
After=network.target
[Service]
User=redmine
Group=redmine
#指定虚拟环境文件
EnvironmentFile=-/home/redmine/redmine-2.5.1/rails.env
WorkingDirectory=/home/redmine/redmine-2.5.1
ExecStart=/usr/local/rvm/src/rvm/rubies/ruby-2.0.0-p648/bin/ruby /home/redmine/redmine-2.5.1/script/rails server webrick -e production -p 4000
Restart=on-failure
RestartSec=10
[Install]
WantedBy=multi-user.target
5. systemctl add falcon service
[Unit]
Description=Open Falcon Agent Service
After=network.target
[Service]
WorkingDirectory=/home/falcon/agent
ExecStart=/home/falcon/agent/falcon-agent -c /home/falcon/agent/cfg.json >> /dev/null 2>&1
StandardOutput=null
Restart=on-failure
RestartSec=15
[Install]
WantedBy=multi-user.target
rsync configuration file
# /etc/rsyncd: configuration file for rsync daemon mode
# See rsyncd.conf man page for more options.
# configuration example:
# uid = nobody
# gid = nobody
# use chroot = yes
# max connections = 4
# pid file = /var/run/rsyncd.pid
# exclude = lost+found/
# transfer logging = yes
# timeout = 900
# ignore nonreadable = yes
# dont compress = *.gz *.tgz *.zip *.z *.Z *.rpm *.deb *.bz2
# [ftp]
# path = /home/ftp
# comment = ftp export area
uid = nobody
gid = nobody
use chroot = no
max connections = 200
timeout = 300
pid file = /var/run/rsyncd.pid
lock file = /var/run/rsyncd.lock
log file = /var/log/rsyncd.log
[m_log]
path=/data/logs/
ignore erros
read only = false
list = false
hosts allow=10.9.12.2
hosts deny=*
Note: The rsync service only opens connection permissions to the specified ip to improve the security of the service! ! !