Init services order

nacheitor · 01-09-2019, 12:34 PM

I am trying to add a service at the end of the linux service execution stack.

I have created the following service (/etc/init.d/my-service):

Code:

#!/bin/bash
### BEGIN INIT INFO
# Provides: my-service
# Required-Start: $all
# Required-Stop: $all
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Description: Run My Service
### END INIT INFO

# Service code .....

But when executing the command:

Code:

update-rc.d my-service defaults

The service is created in S01my-service like the rest of debian services. And it does not run at the end.

I have also tried this:

Code:

# Required-Start: $network network-manager
# Required-Stop: $network network-manager

I just need that when my service runs, it has access to the internet.

What is the problem?

Thanks in advance.

ehartman · 01-09-2019, 12:44 PM

Quote:

Originally Posted by nacheitor

The service is created in S01my-service like the rest of debian services. And it does not run at the end.

What is the problem?

Is this a Debian release that uses systemd?
If so, the starting order is determined BY it, not by the Sxx links and you need to create a systemd service for it.
The "required-start" etc clauses are for the old init system and will result into Sxx links that are numerical DIFFERENT, in the order they should be started.
I do not use systemd myself, so cannot tell you how to do it, but your reference to S01 "like the rest of debian services" makes me suspect you ARE using systemd and then the numbers aren't used anymore for the order of starting them (in fact, systemd often starts multiple services at the same time).

nacheitor · 01-10-2019, 06:44 AM

Thanks ehartman, I have created a file /lib/systemd/system/my-service.service like this:

Code:

[Unit]
Description=My Service
After=network-online.target

[Service]
Type=oneshot
ExecStart=/etc/init.d/my-service start
RemainAfterExit=true
ExecStop=/etc/init.d/my-service stop

[Install]
WantedBy=network-online.target

The service start and stops correctly but, inside the shell script I call (ping www.google.com) for cheching network, and I obtain the next output:

Code:

PING www.google.com (172.217.17.4) 56(84) bytes of data.
64 bytes from mad07s09-in-f4.1e100.net (172.217.17.4): icmp_seq=1 ttl=53 time=11                                                                                                             .0 ms
64 bytes from mad07s09-in-f4.1e100.net (172.217.17.4): icmp_seq=2 ttl=53 time=10                                                                                                             .0 ms
64 bytes from mad07s09-in-f4.1e100.net (172.217.17.4): icmp_seq=3 ttl=53 time=69                                                                                                             .9 ms
ping: sendmsg: The network is inaccessible
ping: sendmsg: The network is inaccessible
ping: sendmsg: The network is inaccessible
ping: sendmsg: The network is inaccessible
ping: sendmsg: The network is inaccessible

In the begining of execution of the service the network is up but in the middle of the exetion the networg goes down.

How could I stop the rest of the services until my-service ends?

Thanks in advance.