We’ve asked the data center team to add our group to their change notification list for any network or access policy updates. No more surprises (hopefully).
If dl3 or dl4 becomes the target of a distributed denial-of-service (DDoS) attack, the data center’s security team will restrict incoming traffic. Instead of taking the server completely offline, they allow only whitelisted IPs or limit connections to prevent collapse. The user-friendly error message is a polite way of saying, "These servers are under siege right now."
Look for a status page (e.g., status.datacenter.com). Many data centers provide real-time updates on DL3/DL4 availability. We’ve asked the data center team to add
For critical, time-sensitive pipelines, we submitted a formal exception request with justifications:
If the service offers multiple download regions (e.g., US East, EU West), switch to a different geographic endpoint. The restriction may apply only to specific logical nodes, not all servers. Ask them to whitelist these for HTTP/HTTPS traffic
If you lease DL3 or DL4, ask for an estimated time to resolution (ETR). In many cases, they can temporarily expose your files via a different server (e.g., DL7) upon request.
Provide your data center or network team with the exact URLs and IP ranges. Example for generic Linux repositories: We’ve asked the data center team to add
Ask them to whitelist these for HTTP/HTTPS traffic.