Ubuntu – Have a service start on startup with Ubuntu

avahiinit.dUbuntu

I'm not clear on how to start a service when the server boots, I read on some of the other questions asked about adding the script to /etc/init.d, but It's just one line that I need to execute in the commandline:

sudo /etc/init.d/avahi-daemon restart

But I have a few issues with this, firstly, I apparently need to use sudo, and it gives me the following:

ngl-server-01:~% sudo /etc/init.d/avahi-daemon start  
Rather than invoking init scripts through /etc/init.d, use the service(8)
utility, e.g. service avahi-daemon start

Since the script you are attempting to invoke has been converted to an
Upstart job, you may also use the start(8) utility, e.g. start avahi-daemon

But when I try just avahi-daemon start I get:

Too many arguments

Why is this? and how would you start this service?

Update

Similarly, how can I mount a disk on boot as well?

Best Answer

You can start the service manually by using

sudo start avahi-daemon

and not using

sudo avahi-daemon start

If you want it so the service starts at boot. You need to have a look at adding a symlink to /etc/rc2.d/ to point at /etc/init.d/avahi-daemon. It is probably easier to read up on the programs sysv-rc-conf or update-rc.d

For mounting a disk you need to edit /etc/fstab with the correct details. You need to know the device you are trying to mount (eg /dev/sdb1), the mount point (eg /mnt/data)and the filesystem.

The entry in fstab will look something like this:

/dev/sdb1    /mnt/data    ext3    defaults    0    2

Related Solutions

Ubuntu – How to start nginx via upstart

You cannot have multiple stop on directives in an upstart job description for Upstart >= 0.5.

And console owner is probably not what you want (this makes nginx the owner of the system console).

Try:

description "nginx http daemon"
start on runlevel 2
stop on runlevel [016]
console output
exec /usr/sbin/nginx -c /etc/nginx/nginx.conf  -g "daemon off;"
respawn

Ubuntu – SSH restart and kill instances

Invoking the init.d script should still restart the service:

dermot@porkboy:~$ sudo /etc/init.d/ssh restart
[sudo] password for dermot:
Rather than invoking init scripts through /etc/init.d, use the service(8)
utility, e.g. service ssh restart

Since the script you are attempting to invoke has been converted to an
Upstart job, you may also use the stop(8) and then start(8) utilities,
e.g. stop ssh ; start ssh. The restart(8) utility is also available.
ssh stop/waiting
ssh start/running, process 4877
dermot@porkboy:~$

'service ssh restart' works fine here (11.04). It's worth noting that restarting sshd won't kill existing SSH sessions. When you log into a box via SSH, sshd spawns new processes to handle the session. Restarting sshd will kill the main sshd daemon process (and start it again, obviously) but leave other spawned instances of sshd untouched. You want this behaviour because it makes life a lot easier when you're working with headless servers in distant datacenters!

Now, to answer the rest of your question. Instead of running 'ps -A', try this:

dermot@porkboy:~$ ps -ef | grep ssh
root      2522     1  0 Aug29 ?        00:00:00 sshd: dermot [priv]
dermot    2615  2522  0 Aug29 ?        00:00:04 sshd: dermot@pts/0
root      4655     1  0 10:52 ?        00:00:00 sshd: dermot [priv]
dermot    4756  4655  0 10:52 ?        00:00:00 sshd: dermot@pts/1
root      4887     1  0 10:55 ?        00:00:00 /usr/sbin/sshd -D

This probably accounts for the three sshd processes you're seeing - one for the main sshd daemon and then two (root parent, dermot child) per session. I'm SSHed in from two locations o I have five processes. The pts/X bit relates to the virtual terminal that the session is attached so...

dermot@porkboy:~$ who
dermot   pts/0        2011-08-29 21:32 (williams-mb.local)
dermot   pts/1        2011-08-30 10:52 (192.168.253.109)

... gives us some idea which session is which. So if I wanted to kill the session from my MacBook I'd 'kill -9 2522'.

Best Answer

Related Solutions

Ubuntu – How to start nginx via upstart

Ubuntu – SSH restart and kill instances

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