Linux上服务的启动，停止和重启

yiwai

　　（1）查看所有的服务



[berry@berry:practice] service
Usage: service < option > | --status-all | [ service_name [ command | --full-restart ] ]
[berry@berry:practice] service --status-all
[ + ]  acpid
[ - ]  anacron
[ - ]  apparmor
[ ? ]  apport
[ + ]  avahi-daemon
[ + ]  bluetooth
[ - ]  brltty
[ ? ]  console-setup
[ + ]  cron
[ + ]  cups
[ + ]  cups-browsed
[ - ]  dbus
[ ? ]  dns-clean
[ + ]  friendly-recovery
[ - ]  grub-common
[ ? ]  irqbalance
[ + ]  kerneloops
[ ? ]  killprocs
[ ? ]  kmod
[ ? ]  lightdm
[ ? ]  networking
[ ? ]  ondemand
[ ? ]  pppd-dns
[ - ]  procps
[ - ]  pulseaudio
[ ? ]  rc.local
[ + ]  resolvconf
[ - ]  rsync
[ + ]  rsyslog
[ + ]  saned
[ ? ]  sendsigs
[ ? ]  speech-dispatcher
[ - ]  sudo
[ ? ]  thermald
[ - ]  udev
[ ? ]  umountfs
[ ? ]  umountnfs.sh
[ ? ]  umountroot
[ - ]  unattended-upgrades
[ - ]  urandom
[ + ]  vboxadd
[ + ]  vboxadd-service
[ - ]  vboxadd-x11
[ +]  vpnagentd
[ - ]  x11-common
　　可以看出vpnagetd服务是启动起来的。



[berry@berry:practice] ps -elf | grep vpnagentd
5 S root      6716  1553  0  80   0 - 10845 futex_ 21:43 ?        00:00:00 /opt/cisco/anyconnect/bin/vpnagentd
0 S berry     6966  2122  0  80   0 -  1172 pipe_w 21:48 pts/5    00:00:00 grep --color=auto vpnagentd
[berry@berry:practice] ps -elf | grep vpnagentd | grep -v berry
5 S root      6716  1553  0  80   0 - 10845 futex_ 21:43 ?        00:00:00 /opt/cisco/anyconnect/bin/vpnagentd
　　berry那一条是运行当前命令出现的。
查看当前vpnagentd这个服务所占用的端口号和相关ip地址和pid和服务名称



[berry@berry:practice] sudo netstat -anp | grep 6716
tcp        0      0 127.0.0.1:29754         0.0.0.0:*               LISTEN      6716/vpnagentd  
unix  2      [ ]         DGRAM                    75522    6716/vpnagentd  
　　利用service+服务名称+start/stop/restart对服务进行启动，停止和重启
　　（1）一种是可以使用service脚本来调度,如:
　　service 服务名 start
　　service 服务名 stop
　　service 服务名 restart



[berry@berry:practice] service vpnagentd status
vpnagentd is stopped
[berry@berry:practice] sudo service vpnagentd start
Starting up Cisco AnyConnect Secure Mobility Client Agent
[berry@berry:practice] service vpnagentd status
vpnagentd (pid 7000) is running
[berry@berry:practice] service vpnagentd restart
Shutting down Cisco AnyConnect Secure Mobility Client Agent
Starting up Cisco AnyConnect Secure Mobility Client Agent
[berry@berry:practice] service vpnagentd status
vpnagentd (pid 7020) is running
　　（2）一种是直接执行某个服务自己的管理脚本，以vpnagetd服务为例
　　/etc/init.d/vpnagentd  start
　　/etc/init.d/vpnagentd stop
　　/etc/init.d/vpnagentd restart



[berry@berry:practice] service vpnagentd status
vpnagentd (pid 7393) is running
[berry@berry:practice] sudo /etc/init.d/vpnagentd stop
Shutting down Cisco AnyConnect Secure Mobility Client Agent
[berry@berry:practice] service vpnagentd status
vpnagentd is stopped
[berry@berry:practice] sudo /etc/init.d/vpnagentd start
Starting up Cisco AnyConnect Secure Mobility Client Agent
[berry@berry:practice] service vpnagentd status
vpnagentd (pid 7707) is running
[berry@berry:practice] sudo netstat -anp | grep 7707
tcp        0      0 127.0.0.1:29754         0.0.0.0:*               LISTEN      7707/vpnagentd  
unix  2      [ ]         DGRAM                    78741    7707/vpnagentd      
[berry@berry:practice]
　　端口号仍然是29754。