Systemctl failed to enable unit

Systemctl failed to enable unit

Systemd is an alternative service manager to the more traditional init system. To ensure the system is healthy, failed units should be investigated on a regular basis. Sooner or later a unit might fail and showing up the systemctl listing. In this article we have a look at how to solve it. During the start of the system, enabled services are started and queued to be executed. Most processes will start correctly and systemd logs the related status in the journal.

Services usually fail because of a missing dependency e. In this example we see that the dev-mqueue unit with type mount fails. As the type is a mount, the reason is most likely because mounting a particular partition failed.

By using the systemctl status command we can see the details of the dev-mqueue. This shows the related command which was executed. We see the unit failed on exit-code as it was not the expected value of 0 actually it is Similar to this service, IPMI fails on our virtual machine. You can manually clear out failed units with the systemctl reset-failed command. This can be done for all units, or a single one. So you are interested in Linux security?

Join the Linux Security Expert training program, a practical and lab-based training ground. For those who want to become or stay a Linux security expert. See training package. Run automated security scans and increase your defenses. Lynis is an open source security tool to perform in-depth audits. It helps with system hardening, vulnerability discovery, and compliance.

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Auditing systemd

Thiss submit actually made my day. Your email address will not be published. This site uses Akismet to reduce spam. Learn how your comment data is processed. Search for:.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. When there is some kind of parse error, systemctl should return the line found in error. Otherwise, the error may be very difficult to identify. The argument is the unit file. This second part of the error comes from strerrorand it's not very easy to change this without writing our own error messages, which, while useful in many cases, also increases the required amount of code.

So, while it would be possible to change this, I don't find current output particularly bad. On second thought, since the "argument" must be somewhere within the Install section itself - Is that true? A better error message, though, would point-out this obvious-in-retrospect fact, such as: Failed to enable unit - Install section: Invalid Argument.

It is otherwise not entirely or immediately obvious that the error would be from some statement within the Install section.

Yeah, we should fix the install logic to propagate parsing errors back to the clients in a more expressive form. I thoroughly agree with this. Good error messages to the end user and administrator is the badge of a good project! In the mean time, I came across a new-to-me command for possibly resolving invalid argument errors:.

I'm facing with this right now, and using systemd-analyze verify doesn't help its output is empty. I came across this issue when adding to the [Install] section. No details as to what was invalid or why it was invalid. I realize that is technically something to verify, but this was part of an automated ansible deploy with a validate: directive which uses a temporary file that I have no control over.

I hope that's because the VM I use for debugging can't be put to sleep how do you ask that question? I get this on one particular server among many that do not show this error. Service unit file is exactly same.

Thanks to the comments here, I managed to find what was wrong in my service file. I was going through all the lines in my unit and service and didn't check the Install section and that an unwanted s was added to. Just lost 6 hours on this so happy I am not the only one that didn't know what to do with this error message hehe. The solution here was kinda obvious, as I didn't really expect the unit argument or whatever it's called to support slashes in the first place.

If you are worried about the amount of code, why not remove the error messages completely?

systemctl failed to enable unit

It would make no difference to my ability to debug the problem. The current messages are completely unhelpful. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Ask Ubuntu is a question and answer site for Ubuntu users and developers.

It only takes a minute to sign up. When I run the command sudo systemctl list-unit-files I think the sudo is optionalI get output which shows all services and their state. I wonder why some services are in the "masked" state. I think this means, "this is better than 'disabling', because the service cannot be started, neither by hand or by systemd".

Note: Here I know exactly what dsmcad service is and what it does, I have installed it myself.

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I am more interested in a general solution. Using disable all symlinks of the specified unit file are removed. This will be displayed if you check e. The advantage of mask is to prevent any kind of activation, even manual. Caution: systemctl list-unit-files is listing the state of the unit files static, enabled, disabled, masked, indirect and has nothing to do with the state of the service.

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To have a look at the services use systemctl list-units. Similarly, Debian can now run without a shell script to halt the system, it's handled by systemd-shutdown source code here instead.

Automatically restart crashed services with systemd

I don't know why. Since you are requesting information about the masked state, it is important to mention that it can be observed in a service that after started, had it definitions modified, reload systemctl daemon-reload and the new state is NOT ok. One easy example to understand it is the following scenario:.

Hence, the masked state may be originated from a improper service definitions. Therefore, the user may induce unmasked state by editing improperly the service. Observation: I'm not sure if it happens on purpose or it is a simple bug default optionbut it may be some interesting info to share. The services labeled as masked can neither be started manually using the start command nor by systems at system boot. Therefore, use caution when employing the systemctl mask command on a service.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

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Apparently systemd doesn't follow symbolic links, the solution is simply to copy or move the file. It is incredibly frustrating because the file is clearly there but nothing seems to want to see it.

There is no failure from the systemd analyze either. It just shows as 'bad' under systemctl --list-unit-files. Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. I can't enable or disable a user service: Failed to execute operation: No such file or directory Ask Question.

Asked 4 years, 7 months ago. Active 4 months ago. Viewed 60k times. Background save may fail under low memory condition. To fix this issue add 'vm. Aug 25 arkos-vagrant redis-server[]: M 25 Aug This will create latency and memory usage issues with Redis.

Redis must be restarted after THP is disabled. Background save may fail under low m Aug 25 arkos-vagrant redis-server[]: M 25 Aug Folatt Folatt 1, 5 5 gold badges 15 15 silver badges 28 28 bronze badges.

Active Oldest Votes. Alex Alex 66 1 1 silver badge 4 4 bronze badges. It's been a long time since I've had this problem, but I remember something like this being the solution. Symlink issue? I had a similar error message when using symbolic links. User service? Benoit Blanchon Benoit Blanchon 2 2 silver badges 7 7 bronze badges. Was also the symlink problem here. You're right the symlink didn't work. I ended up using a hard link instead.

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I'm using a symlink because it lets me git-manage the service file as part of its project, and it's fine for starting and stopping, but not for enabling. Very strange limitation. Here begins the discussion about why to allow or not symlinks: bugzilla. If that doesn't work: sudo strace systemctl enable arkos-redis Look for where the last failure occurs.From the project web page :.

The main command used to introspect and control systemd is systemctl. Some of its uses are examining the system state and managing the system and services. See systemctl 1 for more details. List installed unit files with:. Show the cgroup slicememory and parent for a PID:. Units can be, for example, services. When using systemctlyou generally have to specify the complete name of the unit file, including its suffix, for example sshd.

There are however a few short forms when specifying the unit in the following systemctl commands:. See systemd. Mask a unit to make it impossible to start it both manually and as a dependency, which makes masking dangerous :.

If you are in a local systemd-logind user session and no other session is active, the following commands will work without root privileges. If not for example, because another user is logged into a ttysystemd will automatically ask you for the root password. Look at the units installed by your packages for examples, as well as the annotated example section of systemd.

With systemddependencies can be resolved by designing the unit files correctly. The most typical case is that the unit A requires the unit B to be running before A is started. Dependencies are typically placed on services and not on Targets. For example, network. There are several different start-up types to consider when writing a custom service file. See the systemd. This article or section needs language, wiki syntax or style improvements.

See Help:Style for reference. To avoid conflicts with pacman, unit files provided by packages should not be directly edited.

systemctl failed to enable unit

There are two safe ways to modify a unit without touching the original file: create a new unit file which overrides the original unit or create drop-in snippets which are applied on top of the original unit. For both methods, you must reload the unit afterwards to apply your changes. This can be done either by editing the unit with systemctl edit which reloads the unit automatically or by reloading all units with:.

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For example, if you simply want to add an additional dependency to a unit, you may create the following file:. As another example, in order to replace the ExecStart directive for a unit that is not of type oneshotcreate the following file:. Note how ExecStart must be cleared before being re-assigned [1].

The same holds for every item that can be specified multiple times, e. OnCalendar for timers. They serve a similar purpose as runlevels but act a little different. Each target is named instead of numbered and is intended to serve a specific purpose with the possibility of having multiple ones active at the same time. Some target s are implemented by inheriting all of the services of another target and adding additional services to it. The runlevels that held a defined meaning under sysvinit i.

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Unfortunately, there is no good way to do the same for the user-defined runlevels like 2 and 4. This will only change the current target, and has no effect on the next boot. This is equivalent to commands such as telinit 3 or telinit 5 in Sysvinit. The standard target is default.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here. Change your preferences any time.

Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. You have an Alias with the same name as the unit developer. This caused the same issue for me while writing a service file. It is completely redundant, so just remove it. Learn more. Asked 6 years, 4 months ago. Active 4 years, 2 months ago. Viewed 30k times. LottaLava LottaLava 1 1 gold badge 7 7 silver badges 19 19 bronze badges.

systemctl failed to enable unit

You cannot use [section] inside a script comment those to line [] as a meaining in shell. As a consequence the call to the shell function [] have incorrect argument.

If the after the services must be enabled also, after systemctl will create the. But i still having problems with the pid file. See the section Unit Load Path of man 5 systemd.

Active Oldest Votes. Anton Eliasson Anton Eliasson 1 1 gold badge 6 6 silver badges 8 8 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook.Get the latest tutorials on SysAdmin and open source topics. Write for DigitalOcean You get paid, we donate to tech non-profits. DigitalOcean Meetups Find and meet other developers in your city. Become an author. Systemd is an init system and system manager that is widely becoming the new standard for Linux machines.

While there are considerable opinions about whether systemd is an improvement over the traditional SysV init systems it is replacing, the majority of distributions plan to adopt it or have already done so. Due to its heavy adoption, familiarizing yourself with systemd is well worth the trouble, as it will make administering servers considerably easier. Learning about and utilizing the tools and daemons that comprise systemd will help you better appreciate the power, flexibility, and capabilities it provides, or at least help you to do your job with minimal hassle.

In this guide, we will be discussing the systemctl command, which is the central management tool for controlling the init system. We will cover how to manage services, check statuses, change system states, and work with the configuration files. As you go through this tutorial, if your terminal outputs the error bash: systemctl is not installed then it is likely that your machine has a different init system installed.

The init system is also used to manage services and daemons for the server at any point while the system is running. With that in mind, we will start with some simple service management operations. Units are categorized by the type of resource they represent and they are defined with files known as unit files. The type of each unit can be inferred from the suffix on the end of the file. For service management tasks, the target unit will be service units, which have unit files with a suffix of.

However, for most service management commands, you can actually leave off the. If you are running as a non-root user, you will have to use sudo since this will affect the state of the operating system:. Although you may use the above format for general administration, for clarity, we will use the. If the application in question is able to reload its configuration files without restartingyou can issue the reload command to initiate that process:.

If you are unsure whether the service has the functionality to reload its configuration, you can issue the reload-or-restart command. This will reload the configuration in-place if available.

Otherwise, it will restart the service so the new configuration is picked up:. The above commands are useful for starting or stopping commands during the current session. To tell systemd to start services automatically at boot, you must enable them. To start a service at boot, use the enable command:. We will go over what a target is later in this guide.

This will remove the symbolic link that indicated that the service should be started automatically. Keep in mind that enabling a service does not start it in the current session.

If you wish to start the service and enable it at boot, you will have to issue both the start and enable commands. This gives you a nice overview of the current status of the application, notifying you of any problems and any actions that may be required. There are also methods for checking for specific states. For instance, to check to see if a unit is currently active runningyou can use the is-active command:. This will return the current unit state, which is usually active or inactive.

To see if the unit is enabled, you can use the is-enabled command:.


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