AWS - VPC Debugging
Debugging connectivity issues in a VPC is a common task for AWS users. So far, Flow Logs was the tool of choice to debug issues. Luckily, AWS released the VPC Reachability Analyzer a couple of weeks before, which helps a lot to speed up the debugging experience. Watch my video to quickly discover why your VPC config is not working as expected!
My three example issues are:
Security Group blocks access
NACL blocks access
Route table blocks access
Have you encountered other issues? Let me know, and I also encourage you to check out the explanation of the problem from Reachability Analyzer.
Interested in more? Check out the blog post: https://cloudonaut.io/debugging-a-vpc...
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Chapters:
00:00 - Intro
00:47 - What to expect
01:20 - AWS VPCs Explained
02:47 - VPC Flow Logs
04:34 - VPC Reachability Analyzer
05:50 - Issue 1 - Security Group Blocks Traffic
10:48 - Issue 2 - ACL Blocks Traffic
13:04 - Issue 3 - Missing Route
16:02 - Pitfalls
17:48 - Wrap Up
#aws #amazonwebservice #cloudcomputing #cloudonaut #vpc #debug #acl #security #flowlogs