DOCKER-NOTES.txt

#############DOCKER NETWORK #################
$ docker info  ## Use this to get networks
 plugin section --> network
$ docker network ls ## list network 
1. Bridge: Default network
2. Host: Replicate host network. Used for standalone containers. Uses host nN/w
3. Null: No network between containers
4. Overlay

Main networks are first three

BRIDGE NETWORKING:
command to attach a network
## none network
$ docker run ubuntu --network=none
## host network
$ docker run ubuntu --network=host

docker0 is networkgateway
ehto is communication to ouside
Cannot communicate between network. No communication between cross network
All containers can communicate among them in bridge network

$ docker inspect <container name>
 you will see the network used by docker
 
## Create a network
$ docker network create --d bridge --subnet=192.168.0.0/16
$ docker network create -d overlay --subnet=192.168.10.0/25 --gateway=192.168.10.100

## CONNECT TO NETWORK
$ docker network connect [OPTIONS] <NETWORK Name> <CONTAINER Name>

## You can use --link option to link another container with a preferred alias
$ docker network connect --link container1:c1 multi-host-network container2
## specify the IP address you want to be assigned to the container’s interface.
$ docker network connect --ip 10.10.36.122 multi-host-network container2


HOST NETWORKING:
It uses the Host IP. If a container installed on VM the container take the VM IP
It communicates with ip and port number of container
Each container has its own ip on same host like vmip:port
## host network
$ docker run ubuntu --network=host
$ docker run -d --network host --name my_nginx nginx