Before you start using examples, be sure to enter your username and API key and store them locally by running the
rack configure command. For more information, see Installation and configuration.
You can get help for any command and its options by appending
--help to the series of commands.
$ rack servers instance create --help
Delete servers with an error status¶
You can list servers that have an error status and then delete them all in one line.
$ rack servers instance list --status error --fields id --no-header | rack servers instance delete --stdin id
If you get a
404 Not Found error message, it means that no servers were in error status.
Reboot multiple servers¶
With this one-line example, you list all the servers in an active state, omit the header row from the output, look for servers with
-db in the name, and then restart those servers. Use the appropriate search command for your operating system.
$ rack servers instance list --status active --fields name --no-header | grep -i '-db' | rack servers instance reboot --soft --stdin name
Search for existing servers¶
If you have a large number of servers, you can use the following command to search through the list of available servers running in your account. Use the appropriate search command for your operating system.
$ rack servers instance list | grep "minecraft"
543ce918-9d5c-476b-80a8-eefd396214ef minecraft ACTIVE 184.108.40.206 10.209.161.191 e19a734c-c7e6-443a-830c-242209c4d65d performance1-4
If you expect a long list of servers in the output, you can list them with only the server ID returned.
$ rack servers instance list --fields id
ID aa049bf9-132c-4364-9808-bea21a009061 543ce918-9d5c-476b-80a8-eefd396213ff
You can just get a list of IP addresses for all your cloud servers.
$ rack servers instance list --fields publicipv4
PublicIPv4 220.127.116.11 18.104.22.168
You can also search through metadata on each server. The following example shows the Orchestration information available for a particular server.
$ rack servers instance get-metadata --name minecraft
Get required information before creating a server¶
You usually want to list or create a few things before you launch a server instance. For example, you might want to choose a flavor and image, and add a key pair that you can use to log in to the server after it is launched. This series of commands shows you what to expect in return.
If you want to upload your public key, you can either point to the file or copy and paste it into the command itself.
$ cat ~/.ssh/id_rsa.pub
ssh-rsa AAAB3.........t0mr firstname.lastname@example.org $ rack servers keypair upload --file ~/.ssh/id_rsa.pub --name macpub
$ rack servers keypair upload --public-key "ssh-rsa AAAB3.........t0mr email@example.com" --name macpub
View any key pairs that you already have by listing them.
$ rack servers keypair list
Name Fingerprint 4cb08c2f-c9db-4b00-86db-5d4b2c9a3aff 01:1b:4a:8f:9b:a3:c3:76:3d:90:06:bd:d2:5e:c2:16 macpub 5b:6e:55:2e:07:db:6c:e2:f6:4e:96:eb:29:30:64:2d
Now get the current list of images. Images created with Rackspace Cloud Images are listed first, followed by any snapshot images that you have stored in your account.
$ rack servers image list | grep -i ubuntu
973775ab-0653-4ef8-a571-7a2777787735 Ubuntu 12.04 LTS (Precise Pangolin) (PVHVM) ACTIVE 20 512 656e65f7-6441-46e8-978d-0d39beaaf559 Ubuntu 12.04 LTS (Precise Pangolin) (PV) ACTIVE 20 512 4315b2dc-23fc-4d81-9e73-aa620357e1d8 Ubuntu 15.04 (Vivid Vervet) (PVHVM) ACTIVE 20 512 09de0a66-3156-48b4-90a5-1cf25a905207 Ubuntu 14.04 LTS (Trusty Tahr) (PVHVM) ACTIVE 20 512 5ed162cc-b4eb-4371-b24a-a0ae73376c73 Ubuntu 14.04 LTS (Trusty Tahr) (PV) ACTIVE 20 512
Next, choose the size and power of the server by looking at the available flavors.
$ rack servers flavor list | grep -i compute
compute1-15 15 GB Compute v1 15360 0 0 8 1250 compute1-30 30 GB Compute v1 30720 0 0 16 2500 compute1-4 3.75 GB Compute v1 3840 0 0 2 312.5 compute1-60 60 GB Compute v1 61440 0 0 32 5000 compute1-8 7.5 GB Compute v1 7680 0 0 4 625
Start a server with a key pair and metadata¶
In this example, you choose the image and flavor to launch a Rackspace Cloud Servers instance, such as a 4 GB General Purpose server on Ubuntu 14.04 LTS (Trusty Tahr) (PVHVM), and then put those values into the command along with the key pair and any metadata key-value pairs that you want to include.
$ rack servers instance create --name devserver \ --image-name "Ubuntu 14.04 LTS (Trusty Tahr) (PVHVM)" \ --flavor-id general1-4 --metadata purpose=dev \ --keypair macpub
ID ab95d1d6-27d1-42bb-8cdc-800efcb5fc1f AdminPass k6yfaDkgQfEr
Now you can view the server to ensure that the status is active.
$ rack servers instance list | grep devserver
ID Name Status PublicIPv4 PrivateIPv4Image Flavor ab95d1d6-27d1-42bb-8cdc-800efcb5fc1f devserver ACTIVE 22.214.171.124 10.209.137.65 09de0a66-3156-48b4-90a5-1cf25a905207 general1-4
Connect to the server with SSH by using your public key.
$ ssh firstname.lastname@example.org
Start a server from a volume¶
The boot from volume feature gives you the ability to start a server with an attached volume. You can either start with a volume with a bootable image, to enable simpler migration when a server fails, or a storage volume that remains intact even after a server is shut down or deleted.
To create a bootable volume from an image and launch an instance from this volume, use the
Use the following command to list your bootable volumes:
$ rack block-storage volume list ID Name Bootable Size Status VolumeType SnapshotID 18d361d1-2875-458b-9917-65010e37982a BFV-test-SSD true 100 in-use SSD 88f2a1b0-b5f7-4634-ac4c-5e7ef0d9b2ac BFB-test-SSD true 100 available SSD 6efa7008-ada7-4438-9033-efba4aa5cb06 Volume-1 false 100 available SATA
Following are the parameters for
- The type of object used to create the block device. Valid values are
- The ID of the source resource (volume, snapshot, or image) from which to create the instance.
- The type of the target virtual device. Valid values are
- The size of the volume that is created in GB.
- What to do with the volume when the instance is deleted. Use
falseto delete the volume and use
trueto delete the volume when the instance is deleted.
The following example command boots a server instance from a volume:
$ rack servers instance create --name rackTestBFV --block-device \ "source-type=image,source-id=18d361d1-2875-458b-9917-65010e37982a,\ volume-size=100,destination-type=volume,delete-on-termination=false" \ --flavor-id compute1-15 --keypair macpub