https://github.com/mtulio/go-labs

Dummy Go API to run labs behind AWS *LB
https://github.com/mtulio/go-labs

Last synced: 8 days ago
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Dummy Go API to run labs behind AWS *LB

• Host: GitHub
• URL: https://github.com/mtulio/go-labs
• Owner: mtulio
• License: apache-2.0
• Created: 2021-10-09T02:14:18.000Z (about 3 years ago)
• Default Branch: main
• Last Pushed: 2022-03-02T21:30:57.000Z (over 2 years ago)
• Last Synced: 2024-05-10T00:02:22.653Z (6 months ago)
• Language: Go
• Size: 97.7 KB
• Stars: 1
• Watchers: 3
• Forks: 0
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# go-lab-api (WIP)

Dummy Go API to run labs behind AWS *LB.

Supported protocols (both service and health-check servers):

- TCP

- TLS

- HTTP

- HTTPS

## Lab Apps

### Lab 'app-server'

- Start App to bind servers `service` and `healtch-check` using different protocols (allowed: TCP, TLS, HTTP and HTTPS) and ports

- Watch Target group

- Send termination signal (default timeout 2 minutes)

- observe the metrics

### Lab 'k8sapi-watcher'

- Handle signal to count whether the termination time have started

- Pull /healthy and register the response code (bool)

- Pull TG ARN healthy targets (bool)

- Dump metrics

### Lab 'bind-all'

## Examples `app-server`

## Service TCP and Health Check HTTPS

- Run the app that will bind in service and health-check ports

``` shell

export AWS_REGION=us-east-1

export APP=mrb-tcp-https

TG_ARN=$(aws elbv2 describe-target-groups --region us-east-1 --query "TargetGroups[?TargetGroupName == \`${APP}\`].TargetGroupArn" --output text)

./lab-app-server --app-name ${APP} \

  --service-port 6444 --service-proto tcp \

  --health-check-port 6443 --health-check-proto https \

  --cert-pem ./server.crt --cert-key ./server.key \

  --log-path ./${APP}.log \

  --watch-target-group-arn ${TG_ARN}

```

- Force to fail health check

```

kill -TERM $(pidof lab-app-server)

```

- Wait 120sec to unhealth be cleared

- Collect the logs

```

for IP in $IP_SRV; do scp ec2-user@${IP}:~/mrb-tcp-https.log examples/mrb-tcp-https-${IP}.log; done

```

- Create a CSV for the main metrics that is printed to stdout every 1s

```

echo -e "TIMESTAMP \t APP_TERMINATION \t APP_HEALTHY \t TG_HEALTHY \t TG_HEA_CNT \t TG_UNH_CNT \t REQ_HC_CNT" > examples/mrb-svc-tcp-hc-https.csv

jq -r '. |select ( .type == "metrics" ) | .msg ' examples/mrb-tcp-https-54.83.236.78-TERM.log |jq -r ' [ .time , .app_termination, .app_healthy, .tg_healthy, .tg_health_count , .tg_unhealth_count , .reqc_hc ] | @tsv ' >> examples/mrb-svc-tcp-hc-https.csv

```