Implementing Metrics and Tracing Capabilities by envoyproxy

Step 1 - Start Envoy

envoy.yaml

docker run --name=proxy -d \
    -p 9901:9901 \
    -p 80:10000 \
    -v /root/:/etc/envoy \
    envoyproxy/envoy:latest;
docker run -d katacoda/docker-http-server:healthy; 
docker run -d katacoda/docker-http-server:healthy;

Step 1 - Adding Metrics

cat prometheus.yml

docker run -d -p 9090:9090 \
    -v /root/prometheus.yml:/etc/prometheus/prometheus.yml \
    --name prometheus-server \
    prom/prometheus

https://[[HOST_SUBDOMAIN]]-9090-[[KATACODA_HOST]].environments.katacoda.com/targets

Step 2 - Adding Tracing

tracing:
  http:
    name: envoy.zipkin
    config:
      collector_cluster: 172.18.0.6
      collector_endpoint: "/api/v1/spans"
      shared_span_context: false

Ensure that Jaeger is configured to accept Zipkin requests via the COLLECTOR_ZIPKIN_HTTP_PORT Environment Variable.

docker run -d --name jaeger -e COLLECTOR_ZIPKIN_HTTP_PORT=9411 -p 9411:9411 -p 5775:5775/udp -p 16686:16686 jaegertracing/all-in-one:latest

Step 3 - Generating Traffic

while true; do curl localhost; sleep .5; done

Step 4 - Viewing Metrics

https://[[HOST_SUBDOMAIN]]-9901-[[KATACODA_HOST]].environments.katacoda.com/stats/prometheus

https://[[HOST_SUBDOMAIN]]-9090-[[KATACODA_HOST]].environments.katacoda.com/graph

envoy_cluster_external_upstream_rq{envoy_cluster_name="targetCluster"}

Step 5 - Dashboarding Metrics with Grafana

docker run --name=grafana -d -p 3000:3000 grafana/grafana

https://[[HOST_SUBDOMAIN]]-3000-[[KATACODA_HOST]].environments.katacoda.com/

admin \ admin

http://172.18.0.5:9090

https://2886795274-3000-ollie02.environments.katacoda.com/dashboard/import

https://grafana.com/dashboards/6693

6693

Select Prometheus as the data source and Import.

View Dashboard for the targetCluster

Change Traffic

while true; do curl localhost; sleep .1; done

Should see a big spike in the traffic on the dashboard.

docker ps -a | grep "docker-http-server" | awk '{print $1}' | xargs docker rm -f

Generate Errors

curl 172.18.0.3/unhealthy; curl 172.18.0.4/unhealthy;

Within Prometheus, you will also see a increase in the number of 500 error messages.

https://[[HOST_SUBDOMAIN]]-9090-[[KATACODA_HOST]].environments.katacoda.com/graph

envoy_cluster_external_upstream_rq{envoy_cluster_name="targetCluster"}

Step 6 - Viewing Tracing

https://[[HOST_SUBDOMAIN]]-16686-[[KATACODA_HOST]].environments.katacoda.com/search

cd <directory>	Change directory
ls	List directory
echo 'contents' > <file>	Write contents to a file
cat <file>	Output contents of file

i	In Command Mode	Change into Insert Mode, you can now insert and edit text in the file
esc	In Insert Mode	Change into Command Mode, you can now execute commands
:wq	In Command Mode	Save and Exit

Welcome!

Implementing Metrics and Tracing Capabilities

Congratulations!

You've completed the scenario!

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