Manage System-d services

Operation	Command
View services	sudo systemctl list-unit-files –type=service
Start	sudo systemctl start application.service sudo systemctl start application
Stop	sudo systemctl stop application.service sudo systemctl stop application
Restart	sudo systemctl restart application.service
Reload	sudo systemctl reload application.service
Enable/disable	sudo systemctl enable application.service
Status	systemctl status application.service

Vagrant CLI Reference

Note: You should use the commands in the same directory with the vagrant file.

Basic management

Description	Command
List of processes	vagrant global-status
Create or start process	vagrant up
Reconfigure existing process	vagrant provision
Reboot process	vagrant reload
Shutdown process	vagrant halt
Connect via SSH	vagrant SSH
Destroy the image	vagrant destroy

Authoring commands

Description	Command
vagrant init	Create new vagrantfile
vagrant share	Share the image
vagrant snapshot push	Push a copy to the snapshot stack
vagrant snapshot list	List stack contents
vagrant snapshot restore ID	Restore a specific snapshot

Run without environment variables

env -u GEM_HOME -u GEM_PATH vagrant

Docker CLI Reference

Reference

Command	Description
systemctl start docker systemctl status docker systemctl stop docker docker info docker version	start docker view docker process status stop docker view docker info view docker version
docker images docker image ls docker search ubuntu docker pull ubuntu docker rmi ubuntu docker image rm	view image list view image list ( > v1.13) search for an image download an image delete an image delete an image ( > v1.13)
docker ps -a docker ps -l docker container ls docker container rm <cid> docker rm <cid>	view running containers view all containers view containers ( > v1.13) delete container with id <cid> delete container with id <cid>
docker run imagename docker run –name bla imagename docker run -it ubuntu docker start <cid> docker stop <cid> docker stop $(docker ps -q) docker stats <cid> docket top <cid> docker kill<cid>	create and run a container create and run a named container create interactive session start an existing container stop a container stop all running containers view running stats of a container view top stats of a container kill a running container
docker attach <cid> docker exec -it ubuntu bash	reconnect to a running container Open a new terminal window

How to detach

How container was started	how to detach
-t and -i is used to launch the container	ctrl + P and then ctrl + Q
-t is used to launch the container	ctrl + C
otherwise	pkiill

Examples

sudo docker run --detach \
  --hostname gitlab.example.com \
  --publish 443:443 --publish 80:80 --publish 22:22 \
  --name gitlab \
  --restart always \
  --volume /srv/gitlab/config:/etc/gitlab \
  --volume /srv/gitlab/logs:/var/log/gitlab \
  --volume /srv/gitlab/data:/var/opt/gitlab \
  gitlab/gitlab-ce:latest

References:

• https://www.tecmint.com/install-docker-and-learn-containers-in-centos-rhel-7-6/