CDS no longer in testing mode from ECMWF new Data Centre in Bologna - period at risk ended


On 23 March 2022, we announced that the Climate Data Store (CDS) successfully migrated to the ECMWF new Data Centre in Bologna, Italy.

Following migration, the CDS remained in test mode for a while to check that the service was fully operational from the ECMWF new data centre in Bologna.

The CDS team confirmed that the CDS is now fully operational from the ECMWF new data centre in Bologna, therefore ending the period at risk.

Should you encounter any issue on the CDS, please let us know (ECMWF login required). You may also check the status of the CDS at anytime on the ECMWF Service Status (where CDS is referred to as CopDS).

ECMWF Support

Please also be aware of the Change to CDS Toolbox CDM after 23 March 2022

Dear Anabelle,

I cannot access to about week from Russia. Is there any country restriction from your side?

Thank you!

Update: The auto-download process in the CDS API scripts is now functioning correctly.


Dear CDS Support Team:

The new server functionality from Bologna was working flawlessly until a few hours ago. Currently, my CDS API scripts run and the requests successfully complete on the server as usual, but the process now fails at the point of  downloading the requested file.

The timeout error message is:

Python 3.7.12 | packaged by conda-forge | (default, Oct 26 2021, 06:08:53) 
[GCC 9.4.0] on linux
Type "help", "copyright", "credits" or "license()" for more information.
= RESTART: /media/icystorm/data_2/workshop/2022/DTN_BO_2022/ERA5/wind/
2022-03-25 19:25:22,747 INFO Welcome to the CDS
2022-03-25 19:25:22,749 INFO Sending request to
2022-03-25 19:25:25,474 INFO Request is queued
2022-03-25 19:27:20,607 INFO Request is completed
2022-03-25 19:27:20,641 INFO Downloading to (940K)
2022-03-25 19:28:21,140 WARNING Recovering from connection error [HTTPSConnectionPool(host='', port=443): Max retries exceeded with url: /cache-compute-0011/cache/data3/ (Caused by ConnectTimeoutError(<urllib3.connection.HTTPSConnection object at 0x7f865383cb50>, 'Connection to timed out. (connect timeout=60)'))], attemps 0 of 500
2022-03-25 19:28:21,178 WARNING Retrying in 120 seconds


The requested file that was created from the CDS API script is actually available on the CDS portal, and I can see it there online, but it no longer downloads automatically. The download process of the script abruptly ceased a few hours ago. Now it hangs before starting the download process. I've cleared all caches in Linux, but the problem persists. Perhaps this is a temporary artifact of the testing mode that you mentioned, but I want to verify that with you. Thank you!

Kind regards,

I also met the similar problem at point of downloading: 

2022-03-26 09:54:40,550 INFO Welcome to the CDS
2022-03-26 09:54:40,553 INFO Sending request to
2022-03-26 09:54:40,856 INFO Request is queued
2022-03-26 09:55:32,774 INFO Request is running
2022-03-26 09:59:03,283 INFO Request is completed
2022-03-26 09:59:03,285 INFO Downloading to D:/ (3.7G)
2022-03-26 09:59:24,394 WARNING Recovering from connection error [HTTPSConnectionPool(host='', port=443): Max retries exceeded with url: /cache-compute-0015/cache/data6/ (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x000001F8639958B0>: Failed to establish a new connection: [WinError 10060] 


Similar problem. Even the data download from the web-client fails with ERR_ADDRESS_UNREACHABLE





Download is now working.