Compute host: instance networking (A,B,C)
A: virtual NIC on the VM
B: the tap device on the VM
qbr is the linux bridge device to connect VM's NIC with br-int (workaround to support openstack security group)
C: attach the firewall bridge to the integration-bridge (br-int)
Compute host: integration bridge (D,E):
The integration bridge, br-int, performs VLAN tagging and un-tagging for traffic coming from and to your instances
D: attach the firewall bridge to the integration-bridge (br-int)
E: attach the integration-bridge to the bridge-tunnel
Compute host: tunnel bridge (F,G) Network host: tunnel bridge (H,I)
The tunnel bridge translates VLAN-tagged traffic from the integration bridge into GRE tunnels.
Network host: integration bridge
The integration bridge on the network controller serves to connect instances to network services, such as routers and DHCP servers. It is like the network switch.
Network host: DHCP server (O,P):
DHCP is used to allocate/manage the IP address.
Network host: Router (M,N):
works as a router to the external network. A Neutron router is a network namespace with a set of routing tables and iptables rules that performs the routing between subnets.
- docker ps: list the docker containers
- docker logs: check the docker’s standard output
- docker stop: stop the docker container
- docker start: start the docker container
- docker version: list the docker client/GO version
- docker top [container]: check the docker’s process
- docker rm container: remove the docker
- docker images: list the local docker images
- docker pull [image]: pull down the docker images
- docker search [image]: search docker image in the docker hub
- docker run –d [container]: run the docker as a daemon.
