Update DevHub Site

[kj4ezj]

@nsjames asked me to update the https://learn.eosnetwork.com portal for the DevHub release with the build artifacts of the frontend v0.0.1 tag. In doing so, we ran into issues with the content delivery network (CDN) in some Eastern European and Middle East nations, including but not limited to Israel.

This ticket tracks time originally spent updating the DevHub portal website, plus the time spent investigating and resolving the CDN propagation troubles.

See Also

• devrel issue 80 - Standup DevHub Infrastructure
• devrel issue 96 - DNS Mapping for learn.eosnetwork.com
• devrel issue 134 - Update DevHub Site
• devrel issue 135 - DevHub Frontend CICD
• devrel issue 137 - Encrypt DevHub Backend
• devhub issue 12 - Put AWS Resources into Terraform with a CICD Deployment
• devhub issue 13 - Document CICD System
• devhub issue 14 - Staging Environment
• devhub issue 15 - Backend CICD
• devhub issue 16 - Structures CICD
• devhub issue 17 - Add a JavaScript/TypeScript Linter to the DevHub Projects
• devhub issue 18 - Add BASH Linters for CICD Code
• devhub issue 19 - Include Test Suite in CICD

[kj4ezj]

This is currently my highest priority per @wanderingbort.

[kj4ezj]

Between 16:07 and 16:18 EST today, I used a VPN to test https://learn.eosnetwork.com in 14 countries. Of 14 countries, 10 rendered correctly.

1. Israel - ❌
2. United Kingdom - ✔️
3. Germany - ❌
4. Greece - ❌
5. Argentina - ✔️
6. Mexico - ✔️
7. Georgia - ❌
8. Hong Kong - ✔️
9. Indonesia - ✔️
10. Japan - ✔️
11. New Zealand - ✔️
12. Australia - ✔️
13. South Africa - ✔️
14. United States - ✔️

From these results, you can see only the EU and the Middle East appear to be rendering incorrectly.

Incorrect Render

Correct Render

It has been substantially longer than the expected global propagation time of 20-35 minutes. I tried adding a new origin and changing the behavior to point to this new origin before 17:00 EST to force a replication, but this did not resolve the issue.

[kj4ezj]

I figured out how to use invalidations to "delete" files from edge locations nearly instantaneously and force the CDN to pull content from the origin. I was able to successfully use this technique to force CloudFront to revert to the preregistration portal, then to load the newest version of the DevHub portal. Using my VPN and clearing browser cache between attempts, I tested the expected (latest) content loads in the following regions:

1. Israel - ✔️
2. Germany - ✔️
3. Greece - ✔️
4. Georgia - ✔️
5. Argentina - ✔️
6. South Africa - ✔️
7. Hong Kong - ✔️
8. New Zealand - ✔️
9. Japan - ✔️
10. Turkey - ✔️
11. The United Kingdom - ✔️
12. Finland - ✔️
13. South Korea - ✔️
14. Mexico - ✔️
15. Chile - ✔️
16. Taiwan - ✔️
17. Canada - ✔️
18. Indonesia - ✔️
19. Brazil - ✔️
20. Costa Rica - ✔️
21. Ireland - ✔️
22. Portugal - ✔️
23. Ukraine - ✔️
24. United States
    1. Chicago - ✔️
    2. Dallas - ✔️
    3. Denver - ✔️
    4. Los Angeles - ✔️
    5. Manassas - ✔️
    6. Miami - ✔️
    7. New York - ✔️
    8. Saint Louis - ✔️

This means the content on the CDN can be reliably updated. According to the AWS documentation, we can do this 1,000 times per month for free.

[kj4ezj]

Marking this issue as "Done" and closing as completed because learn.eosnetwork.com is serving the head of eosnetworkfoundation/devhub (currently 62d6152) in all regions worldwide, and we have a strategy to update the site nearly instantaneously moving forward.