Console tool to check the latency to each Amazon EC2 region
License: MIT License
My name is Eugene and I'm a Software Developer.
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goSee pinned below.
The behaviour seems to be correct for bogus service names:
$ go run main.go -service=not-a-service
US-East (Virginia) NaN ms
US-East (Ohio) NaN ms
US-West (California) NaN ms
US-West (Oregon) NaN ms
Canada (Ceentral) NaN ms
Europe (Ireland) NaN ms
Europe (Frankfurt) NaN ms
Europe (London) NaN ms
Asia Pacific (Tokyo) NaN ms
Asia Pacific (Seoul) NaN ms
Asia Pacific (Singapore) NaN ms
Asia Pacific (Mumbai) NaN ms
Asia Pacific (Sydney) NaN ms
South America (São Paulo) NaN msbut panics for partially available services:
$ go run main.go -service=ecr
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x11f4345]
goroutine 7 [running]:
main.(*AWSRegion).CheckLatencyTCP(0xc4200bc5b0, 0xc4200164d0)
/tmp/workspace/awsping/main.go:85 +0x295
created by main.CalcLatency
/tmp/workspace/awsping/main.go:141 +0x357
exit status 2Using a PAT with packages: read scope, I can't pull it from my machine
$ echo "$GHCR_PAT" | docker login ghcr.io --password-stdin --username user
WARNING! Your password will be stored unencrypted in /home/lestephane/snap/docker/1779/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store
Login Succeeded
$ docker pull ghcr.io/ekalinin/awsping:v2.0.1
Error response from daemon: denied
Unless I can actually pull the image locally, I won't be able to troubleshoot issues I'm having pulling this container from a GitHub workflow. I'm not even sure the image in question is available publicly. The docker pull command is taken directly from the release notes.
There's not much you can do about it, but thought I should raise it as an FYI for future users.
When running awsping TCP test I got the following results from Australia, which was really confusing until I realised there was a transparent proxy in place.
$ ./awsping -verbose 2 -repeats 3
Code Region Try #1 Try #2 Try #3 Avg Latency
0 sa-east-1 South America (São Paulo) 5.94 ms 5.42 ms 5.21 ms 5.52 ms
1 eu-west-1 Europe (Ireland) 5.36 ms 6.09 ms 5.40 ms 5.62 ms
2 us-east-2 US-East (Ohio) 6.59 ms 5.50 ms 4.85 ms 5.65 ms
3 ap-northeast-2 Asia Pacific (Seoul) 6.30 ms 5.27 ms 5.49 ms 5.69 ms
4 ap-south-1 Asia Pacific (Mumbai) 6.44 ms 5.46 ms 5.16 ms 5.69 ms
5 us-west-1 US-West (California) 7.09 ms 5.21 ms 4.94 ms 5.75 ms
6 ap-southeast-1 Asia Pacific (Singapore) 6.25 ms 5.51 ms 5.93 ms 5.89 ms
7 us-east-1 US-East (Virginia) 6.73 ms 5.33 ms 5.64 ms 5.90 ms
8 us-west-2 US-West (Oregon) 6.19 ms 5.91 ms 5.70 ms 5.94 ms
9 eu-central-1 Europe (Frankfurt) 6.63 ms 6.05 ms 5.42 ms 6.03 ms
10 ap-southeast-2 Asia Pacific (Sydney) 7.18 ms 5.77 ms 5.96 ms 6.31 ms
11 ap-northeast-1 Asia Pacific (Tokyo) 8.49 ms 5.02 ms 5.43 ms 6.31 ms
Perhaps docs need to be updated to explain what the 'TCP' test does (3 way handshake RTT to http endpoint), or make HTTP the default.
af-south-1 is Africa (Cape Town)
Ping is hardcoded against dynamodb. Take cmd line argument to accept AWS service, eg: ec2, sdb, sns, sqs
All should follow the naming pattern http://<service>.<region>.amazonaws.com/ping
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