- What We Offer
- Your Processing Environment
- Example of tool usage
- Processing EO Data and Serving www services
- Processing and Storing EO
- Embedding OGC WMS Services into Your website
- GPU Use Case
- Using the EO Browser
- EO Data Finder API Manual
- Use of SNAP and QGIS on a CREODIAS Virtual Machine
- Use of WMS Configurator
- DNS as a Service - user documentation
- Use of Sinergise Sentinel Hub on the CREODIAS EO Data Hub
- Load Balancer as a Service
- Jupyter Hub
- Use of CREODIAS Finder for ordering data
- Legal Matters
- Pricing Plans
- Public Reporting Dashboards
- Sentinel Hub Documentation
- Integration Guides
- OGC API
- Custom Processing Scripts
Can a user be registered in two different CREODIAS domains?
Briefly: it is not possible. Each user, while creating CREODIAS account is identified by his mail address given during the registration process.
The mail address is equivalent for user login in clients database. For this reason, our billing and provisioning systems won't allow duplicates for avoiding issues related to confusing the same logins with several tenants.
What is more, in this case, security system sees no difference between a main account and sub-account, which causes that user with a domain created with one login cannot be subaccount using the same mail address.
Please note that this issue takes place only on CREODIAS platform and Client Area. In Horizon Dashboard each domain can contain the same user which should log in via Keystone credentials and provide a number of the domain in the login procedure.
How to activate jumbo frames in VM with Windows?
By default, in our platform Linux hosts have the highest size of IP data packet payload (Maximum Transmission Unit) set as 8950 bytes by DHCP server.
It does not have any impact on the speed of internet connection, but it may optimize connectivity with EOData network.
Unfortunately, Windows VMs does not respect this DHCP setting, and at least so far, Windows users have to switch it manually.
To do so, please click the Start button, and enter cmd command. You will see the Windows command line. After that, check your existing and attached network interfaces by executing:
netsh interface ipv4 show interfaces
You will see output like this:
After that, perform the ipconfig command to see what IP is attached to the particular interface.
In this example, I will focus on Ethernet 3 adapter with EOData network IP address (10.111.0.207) attached.
To increase MTU payload, execute the command
netsh interface ipv4 set subinterface "Ethernet 3" mtu=8950 store=persistent
where "Ethernet 3" is the name of the desired network and "mtu" is the size of packet measured in bytes
After that, check the correctness of operation by checking interfaces list again.
How to download CREODIAS products using EO Finder?
First, it is required to log in on CREODIAS in order to download satellite products. Click “Log In” button
You will be moved to login site and asked to enter your login and password.
Click “Data & Analytics” and choose EOFinder
Select desired product (by entering REST query or finding it by in-built search engine, as explained here
Click on product path in “Search Results” panel
Choose “Download” icon
Now you will be able to download product to your computer.
As well as using graphic interface of EOFinder, you can browse and download satellite products by s3cmd, s3fs and boto3 using terminal:
VM created with option "Create New Volume" and additional Volume attached
It is a common problem with using additional volumes if we have created a new instance with a real volume before. After performing a particular operation, our virtual machine is unable to boot.
This article splits up in two sections: reproduction of the issue and workaround for CREODIAS users.
1. Create a virtual machine with a new real root disk.
2. Click on the name of your instance.
3. Verify the type of the disk. It has been set up as vda. (Within a virtual machine it is visible as sda)
4. Create additional volume and attach it to the Instance. It has been set up as sda. (Within a virtual machine it is visible as sdb)
5. If you choose one of those options: [...]
Soft Reboot Instance
Hard Reboot Instance
Your instance will become unavailable to boot:
Why did it happen? The additional volume (which does not contain any OS) has been chosen as a sda device during booting this time.
To overcome this issue, you have to create a virtual machine with real root disk using Openstack CLI.
1. Source your RC file and use this command to create a bootable volume:
User@CREODIAS:~$ openstack volume create --image image_id --size 5 name_of_the_volume
2. As you may see, you have created a bootable volume with Image Ubuntu 18.04.
3. Now you can create a virtual machine:
User@CREODIAS:~$ openstack server create --volume volume_id --flavor flavor_name --key-name key_name --security-group security_group_id --network network_id name_of_the_virtual_machine
4. The instance has been deployed. Go to Instance details.
Attached volume has a proper sda prefix.
How to run visual applications?
You can access visual applications in two ways:
- X11 forwarding
- X2GO (NX standard)
The simplest (but inefficient for intense pixel graphics, as in satellite imagery analysis programs) is X-over-ssh. The window of a single application is just displayed on terminal screen.
To allow X11 forwarding:
make sure that /etc/ssh/sshd_config on the virtual machine contains:
X11Forwarding yes X11DisplayOffset 10
Now you can establish an ssh session including -X parameter:
user@CREODIAS:~$ ssh -X eouser@instance_ip
-X Enables X11 forwarding. This can also be specified on a per-host basis in a configuration file. X11 forwarding should be enabled with caution. Users with the ability to bypass file permissions on the remote host (for the user's X authorization database) can access the local X11 display through the forwarded connection. An attacker may then be able to perform activities such as keystroke monitoring.
Other solution is NX standard which, however, requires X2Go software, which is not supported directly by linux distributions. Nevertheless, it can be used and many people prefer it over VNC. Clients are available for linux, Windows, and Mac. You can gather more information in separate article:
The installation and configuration is well guided on X2Go official site