usage.md

General Docker usage

• docker run
• docker start
• docker ps
• docker images
• docker rm
• docker rm1
• docker inspect
• docker attach
• docker events

Docker login

• Use docker login to login to specific registrys and or artfactories.

Useful procedures

• docker stop
• docker ps -a | grep -i ${PWD##*/} | grep -i exited | awk '{print $1}' | xargs -i docker rm '{}'
• docker up -d
• on docker compose images should have the smae hash. check with docker images
• docker images |grep name ofprojectorcontainer
• docker rmi tagdeapp

when a container is exited with error

• docker run CONTAINER /bin/bash
• docker run CONTAINER

Deploy with new python req

• $> dc build --no-cache clarodelivery-django-prod (docker-compose = dc this is aliased)
• $> dc stop
• $> docker ps -a | grep -i ${PWD##*/} | grep -i exited | awk '{print $1}' | xargs -i docker rm '{}'
• $> docker images | grep servicename-example1
• $> docker images | grep servicename-example2
• $> docker rmi delivery_delivery-celery-worker-prod
• $> docker rmi delivery_delivery-celery-beat-prod
• $> docker rmi delivery_delivery-celery-worker-dataimporter-prod #erase all minus initial image build.
• $> dc up -d
• $> dc ps
• $> ./00-deploy.sh prod

On tests

• dct build --no-cache clarodelivery-test-django
• dct stop
• docker ps -a | grep -i ${PWD##*/} | grep -i exited | awk '{print $1}' | xargs -i docker rm '{}'
• docker images | grep delivery
• docker rmi clarodelivery_clarodelivery-test-celery-beat
• docker rmi clarodelivery_clarodelivery-test-celery-worker-dataimporter
• docker rmi clarodelivery_clarodelivery-test-celery-worker
• dct up -d
• dct ps
• ./00-deploy.sh test

iptables error

ERROR: for nginx Cannot start service nginx: driver failed programming external connectivity on endpoint nginx_nginx_1 (63d885cf18aa273a8b6b7aebaad70687a7d923ae9418e9954090cfaf024e9bcf): iptables failed: iptables --wait -t nat -A DOCKER -p tcp -d 0/0 --dport 80 -j DNAT --to-destination 172.18.0.2:80 ! -i br-3fbe0f108c06: (fork/exec /sbin/iptables: cannot allocate memory) ERROR: Encountered errors while bringing up the project.

• $> iptable -F
• $> systemctl stop / start docker

List of projects by container

• docker ps --format '{{.Names}}' | cut -d'_' -f1 | sort | uniq

View stats for a running project:

$> docker stats $(docker ps|grep -v "NAMES" | grep PROJECTNAME |awk '{ print $NF }'|tr "\n" " ")

Remove all snapshots for a given project:

$> docker ps -a | grep -i $( echo ${PWD##*/} | sed 's%_%%g') | grep -i exited | awk '{print $1}' | xargs -i docker rm '{}'

Remove all "none" docker images from server

• docker images |grep none|awk '{print $3}'| xargs -i docker rmi '{}'

remove docker processes.

• docker stop 01630a27dae6 #hash ok docker ps

knowing space used by containers

• docker ps --format "{{.ID}}" | xargs -i docker inspect '{}' | grep "json.log" | cut -d'"' -f4 | xargs -i du -sch '{}' | grep -v total | grep -v ^0 | grep -v ^4.0K
• docker ps |grep hashnumber

docker-compose

• sudo docker-compose down && sudo docker-compose up -d
• sudo docker-compose down && sudo docker-compose up --force-build -d

dct build on container

change settings (database and rabbit)

dct stop

rm exited containers.

dct rmi other containers

dct up -d