Exercise 39.1 - Can't set fake_service to start on boot

I am using the Ubuntu 18.04 (kernel 4.15.0-101) VM provided by LF for this course.
Ubunutu, so am using update-rc.d
instead of chkconfig
.
Have set up fake-service so that it starts and stops OK with the service
program. When trying to set it to start on boot with:sudo update-rc.d fake_service enable 2345
I get the error message:update-rc.d: warning: enable action will have no effect on runlevel 2345
update-rc.d: error: no runlevel symlinks to modify, aborting!
The man page for update-rc.d
says:update-rc.d requires dependency and runlevel information to be provided in the init.d script LSB comment header of all init.d scripts
but this is missing from the script provided and there are no files for the service in /etc/rc(x).d
.
Where have I gone wrong?
Comments
-
If the fake_service is in /etc/init.d directory, the service can be enabled/disabled/started and stopped using:
systemctl start fake_service. To make it function on Ubuntu 18_04, please "sudo apt update" then "sudo apt upgrade" and it should work. The update fixed the error from "update-rc.d", my kernel is now 4.15.0-1120 -
You are better off not using either chkconfig or update-rc etc, as all major distributions are on the systemd bandwagon now, including Ubuntu 18.04. So using systemctl will work everywhere and in practical terms the way to go (You have to go back about 4 years at least to find a distribution that doesn't have it.) In a future version of LFS201 we are likely to terminate all references to anything based on the older System V init and service, chkconfig etc as just excess knowledge unless you have to administer really old systems. (RHEL 6 for example) There is still some Ubuntu 16.04 out in the wild but keeping that stuff around for that is not worth the confusion IMHO
1 -
Thanks lee42x.
Thanks coop. I was just trying to follow the guidance in the notes, as that is all I have to determine what I might need to know for the exam.
0 -
Hi coop, I tried using
systemctl
as suggested but still got an error:sudo systemctl enable fake_service
fake_service.service is not a native service, redirecting to systemd-sysv-install.
Executing: /lib/systemd/systemd-sysv-install enable fake_service
update-rc.d: error: fake_service Default-Start contains no runlevels, aborting.
0 -
It's not meant to be run under systemctl; for that you have the other scriptlet, "fake2.service". The lab description says one lab is for System V init and the other for systemd (systemctl)
0 -
Sorry coop, but the course exercises are very confusing in this area. Are you saying I should just not bother with exercise 39.1 ?
I have successfully completed exercise 39.2 on systemd.
0 -
no, I'm saying you cannot combine fake2_service with System V init or fake_service with systemd/systemctl. There are two labs, one for each methods. I am saying as a practical matter the first lab is a legacy task as System V init is disappearing, I cannot predict what is on the exams but they tend to look forward not backward.
I don't know why you have trouble running the first one, but using service and/or chkconfig on Ubuntu is unnatural to begin with as they only emulate it as they use a more debian based view, and Ubuntu 18.04 and later has all the systemd stuff anyway.
0 -
OK, thanks coop. I'll move on.
0
Categories
- All Categories
- 238 LFX Mentorship
- 238 LFX Mentorship: Linux Kernel
- 813 Linux Foundation IT Professional Programs
- 366 Cloud Engineer IT Professional Program
- 183 Advanced Cloud Engineer IT Professional Program
- 82 DevOps Engineer IT Professional Program
- 129 Cloud Native Developer IT Professional Program
- 142 Express Training Courses & Microlearning
- 142 Express Courses - Discussion Forum
- Microlearning - Discussion Forum
- 6.5K Training Courses
- 40 LFC110 Class Forum - Discontinued
- 66 LFC131 Class Forum
- 49 LFD102 Class Forum
- 233 LFD103 Class Forum
- 16 LFD110 Class Forum
- 29 LFD121 Class Forum
- LFD123 Class Forum
- LFD125 Class Forum
- 16 LFD133 Class Forum
- 6 LFD134 Class Forum
- 18 LFD137 Class Forum
- 70 LFD201 Class Forum
- 3 LFD210 Class Forum
- 2 LFD210-CN Class Forum
- 2 LFD213 Class Forum - Discontinued
- 128 LFD232 Class Forum - Discontinued
- 1 LFD233 Class Forum
- 2 LFD237 Class Forum
- 23 LFD254 Class Forum
- 718 LFD259 Class Forum
- 111 LFD272 Class Forum - Discontinued
- 3 LFD272-JP クラス フォーラム
- 13 LFD273 Class Forum
- 222 LFS101 Class Forum
- 1 LFS111 Class Forum
- 2 LFS112 Class Forum
- 1 LFS116 Class Forum
- 3 LFS118 Class Forum
- LFS120 Class Forum
- 1 LFS142 Class Forum
- 2 LFS144 Class Forum
- 3 LFS145 Class Forum
- 4 LFS146 Class Forum
- 15 LFS148 Class Forum
- 15 LFS151 Class Forum
- 1 LFS157 Class Forum
- 55 LFS158 Class Forum
- LFS158-JP クラス フォーラム
- 4 LFS162 Class Forum
- 1 LFS166 Class Forum
- 2 LFS167 Class Forum
- 3 LFS170 Class Forum
- 1 LFS171 Class Forum
- 1 LFS178 Class Forum
- 2 LFS180 Class Forum
- 1 LFS182 Class Forum
- 3 LFS183 Class Forum
- 30 LFS200 Class Forum
- 737 LFS201 Class Forum - Discontinued
- 2 LFS201-JP クラス フォーラム
- 20 LFS203 Class Forum
- 109 LFS207 Class Forum
- 1 LFS207-DE-Klassenforum
- 2 LFS207-JP クラス フォーラム
- 301 LFS211 Class Forum
- 55 LFS216 Class Forum
- 53 LFS241 Class Forum
- 43 LFS242 Class Forum
- 37 LFS243 Class Forum
- 16 LFS244 Class Forum
- 1 LFS245 Class Forum
- LFS246 Class Forum
- LFS248 Class Forum
- 44 LFS250 Class Forum
- 1 LFS250-JP クラス フォーラム
- LFS251 Class Forum
- 156 LFS253 Class Forum
- LFS254 Class Forum
- 2 LFS255 Class Forum
- 6 LFS256 Class Forum
- LFS257 Class Forum
- 1.3K LFS258 Class Forum
- 9 LFS258-JP クラス フォーラム
- 113 LFS260 Class Forum
- 161 LFS261 Class Forum
- 41 LFS262 Class Forum
- 82 LFS263 Class Forum - Discontinued
- 15 LFS264 Class Forum - Discontinued
- 11 LFS266 Class Forum - Discontinued
- 21 LFS267 Class Forum
- 18 LFS268 Class Forum
- 29 LFS269 Class Forum
- 7 LFS270 Class Forum
- 199 LFS272 Class Forum
- 1 LFS272-JP クラス フォーラム
- 2 LFS147 Class Forum
- LFS274 Class Forum
- 3 LFS281 Class Forum
- 2 LFW111 Class Forum
- 257 LFW211 Class Forum
- 176 LFW212 Class Forum
- 15 SKF100 Class Forum
- SKF200 Class Forum
- 2 SKF201 Class Forum
- 797 Hardware
- 198 Drivers
- 68 I/O Devices
- 37 Monitors
- 96 Multimedia
- 174 Networking
- 91 Printers & Scanners
- 83 Storage
- 752 Linux Distributions
- 82 Debian
- 67 Fedora
- 16 Linux Mint
- 13 Mageia
- 23 openSUSE
- 147 Red Hat Enterprise
- 31 Slackware
- 13 SUSE Enterprise
- 349 Ubuntu
- 463 Linux System Administration
- 39 Cloud Computing
- 71 Command Line/Scripting
- Github systems admin projects
- 91 Linux Security
- 78 Network Management
- 101 System Management
- 46 Web Management
- 55 Mobile Computing
- 18 Android
- 28 Development
- 1.2K New to Linux
- 1K Getting Started with Linux
- 364 Off Topic
- 115 Introductions
- 170 Small Talk
- 26 Study Material
- 518 Programming and Development
- 304 Kernel Development
- 211 Software Development
- 1.1K Software
- 211 Applications
- 180 Command Line
- 3 Compiling/Installing
- 405 Games
- 311 Installation
- 78 All In Program
- 78 All In Forum
Upcoming Training
-
August 20, 2018
Kubernetes Administration (LFS458)
-
August 20, 2018
Linux System Administration (LFS301)
-
August 27, 2018
Open Source Virtualization (LFS462)
-
August 27, 2018
Linux Kernel Debugging and Security (LFD440)