How to configure to start my application at boot time

Question

How to configure to start my application at boot time in Ubuntu 16.04

I am using following files to setup my application as a service.

/etc/init.d/myapp
/etc/systemd/systedm/myapp.service
/usr/local/myapp/myapp.sh

To start my application at boot time , I have used following command, but it throws error. How can I resolve this issue?

sudo update-rc.d paxata-server defaults 
insserv: script paxata-server is not an executable regular file, skipped!
insserv: warning: script 'hst' missing LSB tags and overrides

Solution 1

The old way is System V and UpStart but the new way is systemd. The steps are:

1. Create the service file in /etc/systemd/system/myapp.service:

   • contents might be (depending on your service needs):

     [Unit]
     Description=myapp service            
     
     [Service]
     Type=simple            
     ExecStart=/path/to/myapp.sh            
     
     [Install]
     WantedBy=multi-user.target
     

2. Start it: sudo systemctl start myapp

3. Get it to run at boot: sudo systemctl enable myapp
4. Other commands of systemctl:
   • stop it: sudo systemctl stop myapp
   • disable it: sudo systemctl disable myapp

Please see:

https://www.freedesktop.org/software/systemd/man/systemd.service.html

Solution 2

All you need is /etc/systemd/system/myapp.service.

To start: sudo systemctl start myapp

To stop: sudo systemctl stop myapp

To start at boot: sudo systemctl enable myapp

Comments

[George Udosen]

Why are you using both /etc/init.d/myapp, and /etc/systemd/systedm/myapp.service files at the same time either use init scripts or use systemd service files

[Galet]

@George I don't know which files should be mandatory. I want to start my app using "service myapp start" and start at boot. what are the steps for that.

[Galet]

I am getting this error when I execute this -> sudo systemctl enable myapp Failed to execute operation: No such file or directory

[Galet]

Currently I am using service command to start/stop services (e.g. service paxata-server start). Is there any service command to start my service at boot

[George Udosen]

The command was the one you used ealier: sudo update-rc.d myapp defaults

[Galet]

sudo update-rc.d myapp defaults insserv: script myapp is not an executable regular file, skipped! insserv: warning: script 'hst' missing LSB tags and overrides

[George Udosen]

That's cause it's not setup well use systemd

[Galet]

Tried sudo systemctl enable myapp and sudo update-rc.d myapp defaults. How to start using systemd?

[George Udosen]

Now if sudo systemctl enable myapp worked do systemctl status myapp to check the status, and since I don't know what is in your script you alone should be able to tell if it works as expected...

[Galet]

I am getting error for both commands 1. sudo systemctl enable myapp 2. sudo update-rc.d myapp defaults. Refer my previous comments.

[George Udosen]

Get rid of the myapp file in /etc/init.d and use only the one in /etc/systemd/system.

[Galet]

Let us continue this discussion in chat.