start webps.service error

[webp-sh]

start webps.service error

[mathieu-aubin]

Thank yourself, for being truly open to the community and what it has to offer.

There are way too many 'opensource' projects which are, really, only 'open' on the surface.

For the benefit of all, we shall keep innovating!

[mathieu-aubin]

I believe it has to do with the kernel you are currently using not allowing the capabilities stated in the service file.

First make sure all is well stopped and ready for modifications and a clean start

systemctl stop webps

Then, comment the following line, in webps.service

AmbientCapabilities=CAP_NET_BIND_SERVICE

And of course, this is followed by a reaload of systemd stuff with

systemctl daemon-reload

and an attempt at restarting your server.

systemctl start webps

If the previous worked, probably you would benefit from running a newer kernel on the machine you are using and if it is out of the question, you could keep running it with the line commented, providing it is not causing any issues that you can see.

This is of course a temporary fix as the service file would likely be overwritten by a future update with a package manager (obviously, you control that when installing manually, right).

For a more permanent solution, you could create a override file with

systemctl edit webps

and adding the following content

[Service]
AmbientCapabilities=

which would in fact nullify whatever value it had in the original service unit file.

[BennyThink]

@noangel2014
I'm doing it fine with non-root user. Ubuntu 18.04 kernel 5.3.0-42-generic. Please inform us with your kernel version, user, owner of files. Bellow is an example. As @mathieu-aubin suggests, it could be kernel capabilities.

☺  ll
total 14M
-rw-rw-r-- 1 benny benny  160 Mar 11 19:32 config.json
drwxrwxr-x 2 benny benny 4.0K Mar 11 19:32 pics
-rwxrwxr-x 1 benny benny  14M Mar 11 19:28 webp-server
-rw-rw-r-- 1 benny benny  391 Mar 11 19:30 webps.service

/opt/webps
☺  cat /lib/systemd/system/webps.service
[Unit]
Description=WebP Server Go
Documentation=https://github.com/webp-sh/webp_server_go
After=nginx.target

[Service]
Type=simple
StandardError=journal
AmbientCapabilities=CAP_NET_BIND_SERVICE
WorkingDirectory=/opt/webps
ExecStart=/opt/webps/webp-server --config /opt/webps/config.json
ExecReload=/bin/kill -HUP $MAINPID
Restart=always
RestartSec=3s


[Install]
WantedBy=multi-user.target

/opt/webps
☺  whoami
benny

☺ uname -a
Linux home 5.3.0-42-generic #34~18.04.1-Ubuntu SMP Fri Feb 28 13:42:26 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

[noangel2014]

I believe it has to do with the kernel you are currently using not allowing the capabilities stated in the service file.

First make sure all is well stopped and ready for modifications and a clean start

systemctl stop webps

Then, comment the following line, in webps.service

AmbientCapabilities=CAP_NET_BIND_SERVICE

And of course, this is followed by a reaload of systemd stuff with

systemctl daemon-reload

and an attempt at restarting your server.

systemctl start webps

If the previous worked, probably you would benefit from running a newer kernel on the machine you are using and if it is out of the question, you could keep running it with the line commented, providing it is not causing any issues that you can see.

This is of course a temporary fix as the service file would likely be overwritten by a future update with a package manager (obviously, you control that when installing manually, right).

For a more permanent solution, you could create a override file with

systemctl edit webps

and adding the following content

[Service]
AmbientCapabilities=

which would in fact nullify whatever value it had in the original service unit file.

Hello, I have run successfully according to your help

[Service]
AmbientCapabilities=

I don't know why, but it's done. Thank you

[BennyThink]

Thanks Mathieu, for your kindly support!

[n0vad3v]

Hi, could you try systemctl status webps.service -l and post the full output here?

[BennyThink]

Hi, could you please tell us which OS you're using? If it is CentOS, is SELinux enabled? And please paste all the service file's content.

[mathieu-aubin]

As per linux kernel capabilities

... Ambient capabilities were established in k4.3+
Ambient (since Linux 4.3)

Again, what kernel version are you running?

[noangel2014]

@noangel2014
I'm doing it fine with non-root user. Ubuntu 18.04 kernel 5.3.0-42-generic. Please inform us with your kernel version, user, owner of files. Bellow is an example. As @mathieu-aubin suggests, it could be kernel capabilities.

☺  ll
total 14M
-rw-rw-r-- 1 benny benny  160 Mar 11 19:32 config.json
drwxrwxr-x 2 benny benny 4.0K Mar 11 19:32 pics
-rwxrwxr-x 1 benny benny  14M Mar 11 19:28 webp-server
-rw-rw-r-- 1 benny benny  391 Mar 11 19:30 webps.service

/opt/webps
☺  cat /lib/systemd/system/webps.service
[Unit]
Description=WebP Server Go
Documentation=https://github.com/webp-sh/webp_server_go
After=nginx.target

[Service]
Type=simple
StandardError=journal
AmbientCapabilities=CAP_NET_BIND_SERVICE
WorkingDirectory=/opt/webps
ExecStart=/opt/webps/webp-server --config /opt/webps/config.json
ExecReload=/bin/kill -HUP $MAINPID
Restart=always
RestartSec=3s


[Install]
WantedBy=multi-user.target

/opt/webps
☺  whoami
benny

☺ uname -a
Linux home 5.3.0-42-generic #34~18.04.1-Ubuntu SMP Fri Feb 28 13:42:26 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

[root@MyCloudServer ~]# uname -a
Linux MyCloudServer 3.10.0-229.7.2.el7.x86_64 #1 SMP Tue Jun 23 22:06:11 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

I'm root, running in CentOS Linux release 7.7.1908 (core)

By the way, there's an error in the documentation

./webp-server -dump-systemd > /lib/systemd/system/webp-server.service

webp-server.service is error

./webp-server -dump-systemd > /lib/systemd/system/webp-server.service

[mathieu-aubin]

Glad this is resolved, happy to have helped