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Running Docker Containers with Systemd question - General Discussions / General - Docker Forums
Q: [...] I’m looking for information about how systemd interacts with Docker containers. I implemented systemd unit file for one of my container. [...]
2018  forumthread  docker  systemd  issue  example  sysadmin 
4 days ago by ezequiel
linux - Systemd: Supervising process XXXX which is not our child. We'll most likely not notice when it exits - Server Fault
Q: [...] Everything looks ok, except for:

... systemd[1]: aaa.service: Supervising process 18285 which is not our child. We'll most likely not notice when it exits.

Wondering why this message is showing and if it is anything to be concerned about?
issue  forumthread  stackexchange  2017  linux  systemd  sysadmin  example 
11 days ago by ezequiel
systemctl failed to get Dbus connection: No connection to service manager
It seems like a hot ticket, but this doesn't work if 'systemctl' depends on D-Bus being running. It's a total chicken-and-egg problem then. This is the case in the official Docker image for CentOS 7.

<code class="language-bash">sudo systemctl start dbus.service</code>
centos7  centos  docker  systemctl  systemd  dbus  annoyance 
13 days ago by kme
Bug #1581864 “nginx.service: Failed to read PID from file /run/n...” : Bugs : nginx package : Ubuntu
[Description]

Nginx logs an error when started on a machine with a single CPU:

systemctl start nginx
systemctl status nginx
● nginx.service - A high performance web server and a reverse proxy server
   Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)
   Active: active (running) since Sat 2016-05-14 19:35:03 UTC; 2s ago
  Process: 1303 ExecStop=/sbin/start-stop-daemon --quiet --stop --retry QUIT/5 --pidfile /run/nginx.pid (code=exited, status=0/SUC...
nginx  bug  startup  systemd 
14 days ago by unconsidered
CentOS / RHEL 7 : How to configure serial getty with systemd – The Geek Diary
With SysV init, by default, getty processes are started on the first six virtual consoles. They can be accessed with the Ctrl+Alt+F1 to Ctrl+Alt+F6 key combination. systemd starts the getty processes only when needed. That means, only after you change to, for instance, the second virtual terminal by pressing Ctrl+Alt+F2 is the getty process started in that terminal.
linux  centos  rhel  rhel7  centos7  systemd 
18 days ago by bsa3
Autostart – How to run a service on Linux boot time using systemd – Better-Coding
We start defining a new service by creating my-service.service file located in /etc/systemd/system directory:

sudo nano /etc/systemd/system/my-service.service
The following listing presents the simplest configuration, which is required to run the service. As you can see it is very simple. We put only the name of the service and commands responsible for to starting and stopping our service.
docker  blogpost  2018  example  tips  linux  systemd 
18 days ago by ezequiel
Start a docker container on CentOS at boot time as a linux service | esalagea
Note: If docker daemon does not start at boot, you might want to enable the docker service
(me: very simple example that does not address errors well, integration with firewalls (ufw), reusability, etc.)
docker  blogpost  2016  example  tips  linux  systemd 
18 days ago by ezequiel
systemd.service man page [freedesktop.org]
A unit configuration file whose name ends in ".service" encodes information about a process controlled and supervised by systemd.
This man page lists the configuration options specific to this unit type. See systemd.unit(5) for the common options of all unit configuration files. The common configuration items are configured in the generic "[Unit]" and "[Install]" sections. The service specific configuration options are configured in the "[Service]" section.
freedesktop  documentation  manpage  online  systemd  booting  reference  linux 
19 days ago by ezequiel
systemd(1) man page [freedesktop.org]
systemd is a system and service manager for Linux operating systems. When run as first process on boot (as PID 1), it acts as init system that brings up and maintains userspace services.
freedesktop  documentation  manpage  online  systemd  booting  reference  linux 
19 days ago by ezequiel
Post-installation steps for Linux | Docker Documentation
This section contains optional procedures for configuring Linux hosts to work better with Docker.
docker  installation  configuration  booting  linux  debian  ubuntu  centos  fedora  redhat  howto  guide  sysadmin  cli  systemd  security 
19 days ago by ezequiel

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