This section helps you get started using your Eucalyptus cloud, and covers setting up your user credentials, installing and configuring the command line tools, and working with images and instances.As a cloud user, you can access the Eucalyptus cloud using a command line interface such as Euca2ools, or using a web-based interface such as the Eucalyptus Management Console.
This section primarily deals with using the Eucalyptus command line. For complete documentation on using web-based the Eucalyptus Console, see Console Login.
To access Eucalyptus via the command line tools, you need keys for Euca2ools. To access Eucalyptus with the Management Console, you’ll need a password for the Management Console. Talk to your cloud administrator to get your keys and passwords.
Enter the following command:
# euca-describe-images -a IMAGE emi-0ba907069cb1845bc ubuntu-focal/focal-server-cloudimg-amd64.raw.manifest.xml 000575948401 available public x86_64 machine instance-storehvm IMAGE emi-371ada125a928669e centos-7/CentOS-7-x86_64-GenericCloud-2003.raw.manifest.xml 000575948401 available public x86_64 machine instance-storehvm
Look for the image ID in the second column and write it down. The image ID starts with
emi- . Once you find a suitable image to use, make sure you have a keypair to use.
Enter the following command:
euca-create-keypair -f <keypair_name>.private <keypair_name>
<keypair_name> is a unique name for your keypair. For example:
euca-create-keypair -f "alice-keypair.private" "alice-keypair"
The private key is saved to a file in your local directory. Query the system to view the public key:
# euca-describe-keypairs KEYPAIR alice-keypair 92:40:28:cb:08:54:80:95:8d:69:d9:ab:9a:ff:28:30:40:12:6a:66
Before you can log in to an instance, you must authorize access to that instance. This done by configuring a security group for that instance.
A security group is a set of networking rules applied to instances associated with that group. When you first create an instance, it is assigned to a default security group that denies incoming network traffic from all sources. To allow login and usage of a new instance, you must authorize network access to the default security group with the euca-authorize command.
To authorize a security group, use euca-authorize with the name of the security group, and the options of the network rules you want to apply.
Use the following command to grant unlimited network access using SSH (TCP, port 22) and VNC (TCP, ports 5900 to 5910) to the security group
# euca-authorize -P tcp -p 22 -s 0.0.0.0/0 default # euca-authorize -P tcp -p 5900-5910 -s 0.0.0.0/0 default
Use the euca-run-instances command and provide an image ID and the user data file, in the format
euca-run-instances <image_id> . For example:
For additional details and options that can be used with the euca-run-instances command. Enter the following command to get the launch status of the instance:
When you create an instance, Eucalyptus assigns the instance two IP addresses: a public IP address and a private IP address. The public IP address provides access to the instance from external network sources; the private IP address provides access to the instance from within the Eucalyptus cloud environment. For more information on Eucalyptus networking modes, see the Eucalyptus Administrator’s Guide.
To use an instance you must log into it via ssh using one of the IP addresses assigned to it. You can obtain the instance’s IP addresses using the euca-describe-instances query as shown in the following example.
To log into a VM instance:
Enter the following command to view the IP addresses of your instance:
# euca-describe-instances RESERVATION r-825a2c9c04e97ee62 000332850814 default INSTANCE i-131e5853a71c87f16 emi-371ada125a928669e euca-192-168-134-74.eucalyptus.mycloud.example.com euca-172-31-15-2.eucalyptus.internal running 0 t2.micro 2020-10-19T16:35:36.120Z cloud-1a monitoring-disabled 192.168.134.74 172.31.15.2 vpc-bded94e5dd0a07bc3 subnet-1343e38b5566c8e90 instance-store hvm sg-84741faf0bd87ea73 x86_64 NETWORKINTERFACE eni-c1ba7d641cb70a7ee subnet-1343e38b5566c8e90 vpc-bded94e5dd0a07bc3 000332850814 in-use 172.31.15.2 euca-172-31-15-2.eucalyptus.internal true ATTACHMENT eni-attach-d597b44874e84bbb2 0 attached 2020-10-19T16:35:36.125Z true ASSOCIATION 192.168.134.74 172.31.15.2 GROUP sg-84741faf0bd87ea73 default PRIVATEIPADDRESS 172.31.15.2 euca-172-31-15-2.eucalyptus.internal primary
Note that the public IP address appears after the monitoring-disabled text, with the private address immediately following.
Look for the instance ID in the second field of the INSTANCE line and write it down. Use this ID to manipulate and terminate this instance.
Be sure that the security group for the instance allows SSH access.
Use SSH to log into the instance, using your private key and the public IP address. For example:
ssh -i alice-keypair.private firstname.lastname@example.org
You are now logged in to your Linux instance.
The euca-terminate-instances command lets you cancel running VM instances. When you terminate instances, you must specify the ID string of the instance(s) you wish to terminate. You can obtain the ID strings of your instances using the euca-describe-instances or euca-describe-instance-status commands.
Terminating an instance can cause the instance and all items associated with the instance (data, packages installed, etc.) to be lost. Be sure to save any important work or data to Object Storage or EBS before terminating an instance.
To terminate VM instances:
Enter euca-describe-instance-status to obtain the ID of the instances you wish to terminate. Note that an instance ID strings begin with the prefix
# euca-describe-instance-status INSTANCE i-131e5853a71c87f16 cloud-1a running 16 ok ok active SYSTEMSTATUS reachability passed INSTANCESTATUS reachability passed
Enter euca-terminate-instances and the ID string(s) of the instance(s) you wish to terminate:
# euca-terminate-instances i-131e5853a71c87f16 INSTANCE i-131e5853a71c87f16 running shutting-down