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Month: 2020年6月

Linux中的chkconfig增加自己想要启动项

热度 444 度

总有些需要自己配置启动项的,简单记录一下过程

#先写一个自己需要执行的软件或是其他要执行的事项,这里就拿同步系统时间作为例子
[root@localhost ~]# vim /root/syncDate.sh
#!/bin/bash
/usr/sbin/ntpdate cn.pool.ntp.org>/root/times.log
[root@localhost ~]# chmod +x /root/syncDate.sh

#开始写启动项文件kiccleaf
[root@localhost ~]# vim /etc/init.d/kiccleaf
#!/bin/bash
# chkconfig: 3 88 88
/bin/bash /root/syncDate.sh &>/dev/null 2&>/dev/null

注意:# chkconfig: 3 88 88 这一行很重要,如果不添加,
执行chkconfig –add kiccleaf 会提示失败

[root@localhost ~]# chkconfig --add kiccleaf
service kiccleaf does not support chkconfig
#以上是失败提醒,未增加# chkconfig: 3 88 88

#增加可执行权限
[root@localhost ~]# chmod +x /etc/init.d/kiccleaf

#添加到chkconfig,开机自启动
[root@localhost ~]# chkconfig --add kiccleaf
[root@localhost ~]# chkconfig --list kiccleaf

Note: This output shows SysV services only and does not include native
      systemd services. SysV configuration data might be overridden by native
      systemd configuration.

      If you want to list systemd services use 'systemctl list-unit-files'.
      To see services enabled on particular target use
      'systemctl list-dependencies [target]'.

kiccleaf        0:off   1:off   2:off   3:on    4:off   5:off   6:off
#重启系统,查看结果

[root@localhost ~]# cat /root/times.log
12 Jun 11:38:34 ntpdate[10221]: step time server 203.107.6.88 offset -28799.359688 sec
操作成功

#关闭开机启动

[root@localhost ~]# chkconfig kiccleaf off
[root@localhost ~]# chkconfig --list kiccleaf
kiccleaf        0:off   1:off   2:off   3:off   4:off   5:off   6:off

#从chkconfig管理中删除kiccleaf
[root@localhost ~]# chkconfig --del kiccleaf
#查看列表中是否还存在kiccleaf启动项,结果已经没有
[root@localhost ~]# chkconfig --list kiccleaf
service kiccleaf supports chkconfig, but is not referenced in any runlevel (run 'chkconfig --add kiccleaf')

关于chkconfig更多内容,可以参考:Linux下chkconfig命令详解

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linux中rc.local设置开机自启没有生效解决方案

热度 464 度

经常在一些小细节方面卡壳,先查看一下文件是否有执行属性

[root@localhost ~]# ll /etc/rc.d/rc.local
-rw-r--r--  1 root root 507 Jun 12 11:01 /etc/rc.d/rc.local

#上面可以看出没有可执行权限,添加以下可执行权限即可
[root@localhost ~]# chmod +x  /etc/rc.d/rc.local
[root@localhost ~]# ll /etc/rc.d/rc.local
-rwxr-xr-x 1 root root 507 Jun 12 11:01 /etc/rc.d/rc.local
#执行后,查看已经增加了可执行权限

想在系统启动后执行的命令可以添加到/etc/rc.d/rc.local文件
比如启动时同步系统时间

#!/bin/bash
# THIS FILE IS ADDED FOR COMPATIBILITY PURPOSES
#
# It is highly advisable to create own systemd services or udev rules
# to run scripts during boot instead of using this file.
#
# In contrast to previous versions due to parallel execution during boot
# this script will NOT be run after all other services.
#
# Please note that you must run 'chmod +x /etc/rc.d/rc.local' to ensure
# that this script will be executed during boot.

touch /var/lock/subsys/local
#同步系统时间
/usr/sbin/ntpdate cn.pool.ntp.org
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