OpenStack different services have very powerful command line interfaces, with lots of different options.  

Here is quick reference of the most used command-line commands:

General:

You will probably want to know what is the name of your openstack deployment?   Aka Queens, Pines, Ocata, Newton but also to Mitaka, Liberty, Kilo & Juno.
Which OpenStack version is installed? 

$ openstack --version

Once you have the version, check here for the name.
Same way for other specific services  too, for example:

$ nova-manage --version
$ cinder-manage --version
$ glance-manage --version

Identity Service (aka Keystone):

List all users

$ openstack user list

List Identity service catalog

$ openstack catalog

List all services in service catalog

$ openstack service list

Compute (aka Nova)

List instances, notice status of instance

$ openstack server list

List images

$ openstack image list

List flavors

$ openstack flavor list

Boot an instance using flavor and image names

$ openstack server create --image IMAGE --flavor FLAVOR INSTANCE_NAME
$ openstack server create --image cirros-0.4.8-x86_64-uec --flavor m1.large\
  NewInstance

Login to a Linux instance

# ip netns

# ip netns exec NETNS_NAME ssh USER@SERVER

# ip netns exec qdhcp-34343ds43-2323-4f9c-5432-0432885dgtf2 \

ssh cirros@10.0.0.2

*Note, in CirrOS the password for user cirros is "cubswin:)".

Show details of instance

$ openstack server show NAME
$ openstack server show NewInstance

View console log of instance

$ openstack console-log NewInstance

Set metadata on an instance

$ nova meta volumeTwoImage set newmeta='my new meta data'

Create an instance snapshot

$ openstack image-create volumeImage snapshot1OfVolumeImage
$ openstack image-show snapshot1OfVolumeImage


Stop, Pause, resize, rebuild and offcourse reboot an instance

Pause

$ openstack server pause NAME
$ openstack server pause myinstance

Unpause

$ openstack server unpause NAME

Stop

$ openstack server stop NAME

Start

$ openstack server start NAME

Resize

$ openstack server resize NAME FLAVOR
$ openstack server resize myinstance  m2.large
$ openstack server resize --confirm myinstance 

Rebuild

$ openstack server rebuild NAME IMAGE
$ openstack server rebuild myinstance cirros-121

Reboot

$ openstack server reboot NAME
$ openstack server reboot myinstance 

Image Service (aka Glance)

List images you can access

$ openstack image list

Delete specified image

$ openstack image delete IMAGE

Describe a specific image

$ openstack image show IMAGE

Update image

$ openstack set imageIMAGE

Networking Service (aka Neutron)

Create network

$ openstack network create NAME

Create a subnet

$ openstack subnet create --subnet-pool SUBNET --network NETWORK SUBNET_NAME
$ openstack subnet create --subnet-pool 10.0.0.2/30 --network network1 subnetwork1

List network and subnet

$ neutron net-list
$ neutron subnet-list

Examine details of network and subnet

$ neutron net-show ID_OR_NAME_OF_NETWORK
$ neutron subnet-show ID_OR_NAME_OF_NETWORK

Block Storage Service (aka Cinder)

Create a new volume

$ openstack volume create --size SIZE_IN_GB  NAME
$ openstack volume create --size 10 MyVolume

Boot an instance and attach to volume

$ openstack server create --image cirros-qcow2 --flavor m2.large MyVolume

List volumes

$ openstack volume list

Attach volume to instance after instance is active, and volume is available

$ openstack server add volume INSTANCE_ID VOLUME_ID 

Manage volumes after login into the instance

List storage devices

# fdisk -l

Make filesystem on volume

# mkfs.ext3 /dev/vdb

Create a mountpoint

# mkdir /myspace

Mount the volume at the mountpoint

# mount /dev/vdb /myspace

Create a file on the volume

# touch /myspace/helloworld.txt 
# ls /myspace

Unmount the volume

# umount /myspace

Troubleshooting

(1) In case you tried run one of the above commands and received the following error "Missing value auth-url required for auth plugin password", simply follow this article and you are good to go.

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