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GitHub - mwiater/golangconsuldiscovery: Replicating and Load Balancing Go Applic...
source link: https://github.com/mwiater/golangconsuldiscovery
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golangconsuldiscovery
Article reference
This repository is a code companion to my article on Better Programming: Replicating and Load Balancing Go Applications in Docker Containers with Consul and Fabio. Please see that post for more details on this implementation.
Application
Quickstart
make docker-run-consul-discovery
Building Docker image:
Docker build command: docker build -t mattwiater/golangconsuldiscovery .
[+] Building 9.1s (16/16) FINISHED
=> [internal] load build definition from Dockerfile 0.0s
=> => transferring dockerfile: 629B 0.0s
=> [internal] load .dockerignore 0.0s
=> => transferring context: 2B 0.0s
=> [internal] load metadata for docker.io/library/alpine:latest 0.4s
=> [internal] load metadata for docker.io/library/golang:alpine 0.4s
=> [golangconsuldiscovery 1/6] FROM docker.io/library/golang:alpine@sha256:ee2f23f1a612da71b8a4cd78fec827f1e67b0a8546a98d257cca441a4ddbebcb 0.0s
=> => resolve docker.io/library/golang:alpine@sha256:ee2f23f1a612da71b8a4cd78fec827f1e67b0a8546a98d257cca441a4ddbebcb 0.0s
=> [internal] load build context 0.0s
=> => transferring context: 9.84kB 0.0s
=> FROM docker.io/library/alpine:latest@sha256:02bb6f428431fbc2809c5d1b41eab5a68350194fb508869a33cb1af4444c9b11 0.0s
=> CACHED [golangconsuldiscovery 2/6] RUN addgroup -S golangconsuldiscovery && adduser -S -u 10000 -g golangconsuldiscovery golangconsuldiscovery 0.0s
=> CACHED [golangconsuldiscovery 3/6] WORKDIR /go/src/app 0.0s
=> [golangconsuldiscovery 4/6] COPY . . 0.1s
=> [golangconsuldiscovery 5/6] RUN CGO_ENABLED=0 go install -ldflags '-extldflags "-static"' -tags timetzdata 8.0s
=> [golangconsuldiscovery 6/6] RUN echo ${PWD} && ls -lR 0.5s
=> CACHED [stage-1 1/3] COPY --from=alpine:latest /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ 0.0s
=> CACHED [stage-1 2/3] COPY --from=golangconsuldiscovery /go/bin/golangconsuldiscovery /golangconsuldiscovery 0.0s
=> CACHED [stage-1 3/3] COPY --from=golangconsuldiscovery /etc/passwd /etc/passwd 0.0s
=> exporting to image 0.0s
=> => exporting layers 0.0s
=> => writing image sha256:c6c87e044c0a6327c012db61039aeb47ac433b692df75862c3e06de20c9080c9 0.0s
=> => naming to docker.io/mattwiater/golangconsuldiscovery 0.0s
Complete!
Starting Consul container:
Docker run command: docker run -d --rm -p 8500:8500 -p 8600:8600/udp --name=golangconsuldiscovery-consul consul agent -server -ui -node=consul -bootstrap-expect=1 -client=0.0.0.0
Complete!
Starting Fabio container:
Docker run command: docker run -d --rm -p 9000:9000 -p 9001:9001 -v ./fabio.properties:/etc/fabio/fabio.properties --name=golangconsuldiscovery-fabiolb fabiolb/fabio
Complete!
Starting hello app container instance 1/8:
Starting Docker container: mattwiater/golangconsuldiscovery
Container will forward its external port to the application port: 8001->8000
Docker run command: docker run -d --rm -p 8001:8000 --name golangconsuldiscovery-hello-1 -e DOCKERPORT=8001 -e CONSUL_HTTP_ADDR=192.168.0.99:8500 -e FABIO_HTTP_ADDR=192.168.0.99:9000 mattwiater/golangconsuldiscovery
Complete!
Starting hello app container instance 2/8:
Starting Docker container: mattwiater/golangconsuldiscovery
Container will forward its external port to the application port: 8002->8000
Docker run command: docker run -d --rm -p 8002:8000 --name golangconsuldiscovery-hello-2 -e DOCKERPORT=8002 -e CONSUL_HTTP_ADDR=192.168.0.99:8500 -e FABIO_HTTP_ADDR=192.168.0.99:9000 mattwiater/golangconsuldiscovery
Complete!
Starting hello app container instance 3/8:
Starting Docker container: mattwiater/golangconsuldiscovery
Container will forward its external port to the application port: 8003->8000
Docker run command: docker run -d --rm -p 8003:8000 --name golangconsuldiscovery-hello-3 -e DOCKERPORT=8003 -e CONSUL_HTTP_ADDR=192.168.0.99:8500 -e FABIO_HTTP_ADDR=192.168.0.99:9000 mattwiater/golangconsuldiscovery
Complete!
Starting hello app container instance 4/8:
Starting Docker container: mattwiater/golangconsuldiscovery
Container will forward its external port to the application port: 8004->8000
Docker run command: docker run -d --rm -p 8004:8000 --name golangconsuldiscovery-hello-4 -e DOCKERPORT=8004 -e CONSUL_HTTP_ADDR=192.168.0.99:8500 -e FABIO_HTTP_ADDR=192.168.0.99:9000 mattwiater/golangconsuldiscovery
Complete!
Starting hello app container instance 5/8:
Starting Docker container: mattwiater/golangconsuldiscovery
Container will forward its external port to the application port: 8005->8000
Docker run command: docker run -d --rm -p 8005:8000 --name golangconsuldiscovery-hello-5 -e DOCKERPORT=8005 -e CONSUL_HTTP_ADDR=192.168.0.99:8500 -e FABIO_HTTP_ADDR=192.168.0.99:9000 mattwiater/golangconsuldiscovery
Complete!
Starting hello app container instance 6/8:
Starting Docker container: mattwiater/golangconsuldiscovery
Container will forward its external port to the application port: 8006->8000
Docker run command: docker run -d --rm -p 8006:8000 --name golangconsuldiscovery-hello-6 -e DOCKERPORT=8006 -e CONSUL_HTTP_ADDR=192.168.0.99:8500 -e FABIO_HTTP_ADDR=192.168.0.99:9000 mattwiater/golangconsuldiscovery
Complete!
Starting hello app container instance 7/8:
Starting Docker container: mattwiater/golangconsuldiscovery
Container will forward its external port to the application port: 8007->8000
Docker run command: docker run -d --rm -p 8007:8000 --name golangconsuldiscovery-hello-7 -e DOCKERPORT=8007 -e CONSUL_HTTP_ADDR=192.168.0.99:8500 -e FABIO_HTTP_ADDR=192.168.0.99:9000 mattwiater/golangconsuldiscovery
Complete!
Starting hello app container instance 8/8:
Starting Docker container: mattwiater/golangconsuldiscovery
Container will forward its external port to the application port: 8008->8000
Docker run command: docker run -d --rm -p 8008:8000 --name golangconsuldiscovery-hello-8 -e DOCKERPORT=8008 -e CONSUL_HTTP_ADDR=192.168.0.99:8500 -e FABIO_HTTP_ADDR=192.168.0.99:9000 mattwiater/golangconsuldiscovery
Complete!
25cf15cf01c1 mattwiater/golangconsuldiscovery "/golangconsuldiscov…" Less than a second ago Up Less than a second 0.0.0.0:8008->8000/tcp, :::8008->8000/tcp golangconsuldiscovery-hello-8
2934ccbade8a mattwiater/golangconsuldiscovery "/golangconsuldiscov…" 1 second ago Up Less than a second 0.0.0.0:8007->8000/tcp, :::8007->8000/tcp golangconsuldiscovery-hello-7
ede6fbd4e796 mattwiater/golangconsuldiscovery "/golangconsuldiscov…" 1 second ago Up Less than a second 0.0.0.0:8006->8000/tcp, :::8006->8000/tcp golangconsuldiscovery-hello-6
b626b33b2eb1 mattwiater/golangconsuldiscovery "/golangconsuldiscov…" 1 second ago Up 1 second 0.0.0.0:8005->8000/tcp, :::8005->8000/tcp golangconsuldiscovery-hello-5
5e72d8ae1c7d mattwiater/golangconsuldiscovery "/golangconsuldiscov…" 2 seconds ago Up 1 second 0.0.0.0:8004->8000/tcp, :::8004->8000/tcp golangconsuldiscovery-hello-4
a05747f73613 mattwiater/golangconsuldiscovery "/golangconsuldiscov…" 2 seconds ago Up 1 second 0.0.0.0:8003->8000/tcp, :::8003->8000/tcp golangconsuldiscovery-hello-3
6ca922bf2e29 mattwiater/golangconsuldiscovery "/golangconsuldiscov…" 2 seconds ago Up 2 seconds 0.0.0.0:8002->8000/tcp, :::8002->8000/tcp golangconsuldiscovery-hello-2
bb6083c319aa mattwiater/golangconsuldiscovery "/golangconsuldiscov…" 3 seconds ago Up 2 seconds 0.0.0.0:8001->8000/tcp, :::8001->8000/tcp golangconsuldiscovery-hello-1
2f0d4fb5b23e fabiolb/fabio "/usr/bin/fabio -cfg…" 3 seconds ago Up 2 seconds 0.0.0.0:9000-9001->9000-9001/tcp, :::9000-9001->9000-9001/tcp, 9998-9999/tcp golangconsuldiscovery-fabiolb
366f53a2e74f consul "docker-entrypoint.s…" 3 seconds ago Up 3 seconds 8300-8302/tcp, 8600/tcp, 8301-8302/udp, 0.0.0.0:8500->8500/tcp, :::8500->8500/tcp, 0.0.0.0:8600->8600/udp, :::8600->8600/udp golangconsuldiscovery-consul
Complete!
Dashboards may take a few seconds to come on line:
Console Dashboard is avaiable: http://192.168.0.99:8500/ui/dc1/services
Fabio Dashboard is avaiable: http://192.168.0.99:9001/routes
Fabio Load Balanced Endpoint is: http://192.168.0.99:9000/hello/api/v1
Teardown
make docker-teardown-consul-discovery
Load testing: Ddosify
Setup
Install Docker-compose
sudo curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose
/usr/local/bin/docker-compose version
Ddosify Self-hosted
Ref: https://github.com/ddosify/ddosify/tree/master/selfhosted
git clone https://github.com/ddosify/ddosify.git
cd ddosify/selfhosted
Ddosify: Start
docker-compose up -d
The dashboard will be available, e.g.: http://192.168.0.99:8014
Ddosify: Teardown
docker compose down --volumes
RESULTS
1 Container Replica
-------------------
Total Requests: 6,000
Request Success: 233
Request Fail: 5,767
Avg: 2,840 (ms)
Min: 7 (ms)
Max: 9,933 (ms)
4 Container Replicas
--------------------
Total Requests: 6,000
Request Success: 5,796
Request Fail: 204
Avg: 290 (ms)
Min: 5 (ms)
Max: 9,873 (ms)
8 Container Replicas
--------------------
Total Requests: 6,000
Request Success: 6,000
Request Fail: 0
Avg: 17 (ms)
Min: 5 (ms)
Max: 86 (ms)
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