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nixnotwin
Asked: 2010-12-03 00:42:25 +0800 CST

Stopping daemons from loading at boot time

  • 772

I want to stop some daemons from loading at boot time, specially squid3. What is the best way of doing this?

boot squid

5 Answers

  1. Best Answer

    You can use the chkconfig utility for this purpose. 

    sudo apt-get install chkconfig

    To check the run level status of squid you can run this command: 

     chkconfig --list | grep squid

    This will output something like below:

    squid           0:off   1:off   2:on    3:on    4:on    5:on    6:off

    To turn off squid in all run level you can use this command:

    sudo chkconfig  squid off

 chkconfig --list | grep squid

squid           0:off   1:off   2:off   3:off   4:off   5:off   6:off

    To turn off squid in a particular run level you can use this command:

     chkconfig  --level 3  squid off
    • 7

  2. System daemons can use either legacy SysV init scripts or the newer Upstart.

    For sysv scripts there are several management tools, one of such tools is "sysv-rc-conf" from the "sysv-rc-conf" package, install it and launch it from the terminal.

    Regarding Upstart as far as I know there is no management tool yet, you need to manually rename the corresponding script from /etc/init, eg:

    mv /etc/init/ufw.conf /etc/init/ufw.conf.disabled

    Squid3 uses sysv init scripts, you can disable it with sysv-rc-conf .

    • 3

  3. The above answers did not work for my Ubuntu 16.04.

    Here is what it worked:

    sudo systemctl stop squid 
update-rc.d squid disable

sudo systemctl status squid

    Although you may get an error like:

    insserv: warning: current start runlevel(s) (empty) of script squid overrides LSB defaults (2 3 4 5).

    insserv: warning: current stop runlevel(s) (0 1 2 3 4 5 6) of script `squid' overrides LSB defaults (0 1 6). insserv: fopen(.depend.stop): Permission denied

    The service remains stopped even after reboot.

    If you know why the error happens and how to fix it, please feel free to comment or edit the answer.

    • 3

  4. Squid uses the old init system, so this command should do the trick: sudo update-rc.d -f squid3 remove.

    For more find-grained control of when to start/stop the service: sudo sysv-rc-conf

    • 2

  5. Two the simplest ways (from my point of view).

    1) mv /etc/init/squid3.conf /etc/init/squid3.conf.disabled

    2) comment out the following line

    start on runlevel [2345]

    in /etc/init/squid3.conf

    • 1