Docker-Containers

docker run --name elastic_training_ --net training_net -p 9200:9300 -it -m 1GB -v docker.elastic.co/elasticsearch/elasticsearch:8.12.2

• Local port 9200 maps to container port 9300

• Local port 9300 maps to container port 9300

To solve this error: "Error response from daemon: Conflict. The container name "/kibana_training_" is already in use by container"

• 1. 1. stop container

  2. 2 remove container

  3. 3 restart container with same name

• 1. 1. stop container

  2. 2. restart container with same name

• 1. 1. stop container

  2. 2. remove container

  3. 3. start container with same name

• 1. 1. remove container

  2. 2. stop container with same name

Which command fix this "max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]"?

• sysctl -w vm.max_map_count=262144

• sysctl vm.max_map_count=262144

• sysctl -v m.max_map_count=262144

• sysctl -x vm.max_map_count=262144

Create a network NETWORK and add a container CONTAINER to this network

• 1. 1. docker network create NETWORK

  2. 2. docker network add NETWORK CONTAINER

• 2. 1. docker network create NETWORK

  2. 2. docker network connect NETWORK CONTAINER

• 3. 1. docker network add NETWORK

  2. 2. docker network connect NETWORK CONTAINER

• 1. 1. docker network connect NETWORK

  2. 2. docker network connect NETWORK CONTAINER

This docker-compose will not work...

• 1. Still pending mapping port

• Still pending network definition

• Still pending the volumes

• Still pending ENV variables

Is it possible to create different containers with just one Image?

• Yes, with the same container name

• Yes, with different container name

• No, a new image must be downloaded to create other container

• N/A

docker network inspect training_net

• Show network properties

• Show network properties and containers added in this Network

• Wrong command

• Command deprecated

You see this error : max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]" ..when...

• Try run docker command and there is an issue with mem

• Try to download an image and there is and issue on the volume

• Try to create a network and you do not have auth

• Try to add a container to a network without priviliges

You have a container A attached to a NETWORK A. If you attach container A to a NETWORK B

• Container A will change to NETWORK B

• Container A will remain in NETWORK A and will be added to NETWORK B

• Error: Container A must be detached from NETWORK A first

• Error: You cannot attach containers to networks

This command docker exec -it elastic_training_2 /bin/bash

• Raise an error

• Open a terminal inside container

• Open a terminal in WSL Windows

• Bad Syntax