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This service is available as best effort for testing. Be aware when trying this service in your tenancy. |
EUMETCast Terrestrial over AMT can serve any user hosted on the EUMETSAT side of the EWC, regardless of native multicast connectivity. The encapsulated data can travel via GEANT network or the commercial internet.
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Pre-requisite
- You need to register to the EO Portal
- Subscribe to data for EUMETCast Terrestrial
- Request EUMETCast Terrestrial credentials for access from the EWC. You have to write to ops@eumetsat.int (Helpdesk) with you username from EO Portal.
Once you have the following parameters, you can proceed to the next steps.Users need to be registered to EO Portal and have the following credentials in order to provision the service in their tenancies:
| parameter | value or where to take it |
|---|---|
| username | from EO portal |
| userkey | from EO portal |
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provided by the helpdesk in the pilot phase. (opening a ticket and request EUMETCast Terrestrial credentials for access from the EWC |
Create security group
Once you enter your tenancy:
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3. Assign eumetcast-ssh name to the security group and hit save:
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In the scoped cloud select your tenancy from the list. If you leave All, the security group cannot be assigned to VMs. |
4. Click on the new security group to access it
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5. Click on the 'Add rule' button to create a new rule
6. Add the following rule rules and hit save
| Rule name | Direction | Rule Type | Protocol | Port Range | Source Type | Source | Destination Type |
|---|---|---|---|---|---|---|---|
| 2268-udp | ingress | Custom Rule | UDP | 2268 | Network | 0.0.0.0/0 | Instance |
| 22-ssh-tcp | ingress | Custom Rule | TCP | 22 | Network | 0.0.0.0/0 | Instance |
| 8500-tcp | ingress | Custom Rule | TCP | 8500 | Network | 0.0.0.0/0 | Instance |
Now you are ready to provision the client!
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- Go to Provisioning → Instances and click 'Add' button
2. Go to network category and select Use the search bar to find the 'EUMETCAST TERRESTRIAL ON AMT' (type eumetcast or terrestrial for example):
3. Select name for your VM:(e.g. eumetcast-client)
4. Use the following specifications for the provisioning of the client:
CPU | 8 cores |
RAM | 64 GB |
OS | Ubuntu v 1822.04 |
Storage | 1.2TB |
EWC Plan | hm.xlarge |
security group | eumetcast-ssh |
Insert your credentials
5. Save and create the VM
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| Warning |
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All data is deleted 5 mins after retrieval by default and this can be changed by the user. (See section below)How to modify the time to live of the data |
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sudo crontab -e
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You have to setup both crontabs to the same time! |
How to have real time logging
The entries to the log file for the tellicast client (/var/log/tellicast-client/recv_ter-1.log) is by default buffered.
In order to get real-time log events:
- ssh into the VM
2. Alter the file /etc/cast_client_ter-1.ini, removing the “>>” in front of the log file path:
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log_file=/var/log/tellicast-client/recv_ter-1.log |
3. After altering the file, you have to restart the service running the following command:
to modify that) |
6. Enable NAKs How to enable NAKs
7. Enable ACKs How to enable ACKs
User Notification Service
To access the User Notification Service (UNS), go to uns.eumetsat.int. You can find information on service alerts, scheduled maintenance and service enhancements. You can subscribe to UNS email notifications via the Earth Observation Portal. In addition, users can receive regular updates on scheduled maintenance and service enhancements through our EUMETSAT Users Twitter feed.
Advanced topics
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| Info |
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Full documentation related to EUMETCast Terrestrial can be found here. |
| Code Block |
| sudo systemctl restart tellicast-client |