Scales the number of docker containers for service based on threshold(s) for metrics
poll_interval_seconds: 60
metric_stores:
- name: monitoring
type: prometheus
prometheus:
url: http://localhost:9090
autoscale_rules:
- service_name: example_web
scale_min: 1
scale_max: 3
scale_step: 1
metric_store: monitoring
metric_query: scalar(avg(rate(http_requests_total{job="web"}[5m])))
scale_up_threshold: 300
scale_down_threshold: 200This service must be run on a docker swarm manager node if the connection to docker daemon needs to be established via
/var/run/docker.sock
You can alternatively pass docker host url via
DOCKER_HOSTenvironment variable. You can pass environment variableDOCKER_TLS_VERIFYto verify the host against a CA certificate andDOCKER_CERT_PATHfor specifying path to a directory containing TLS certificates to use when connecting to the Docker host.
# Ensure python 2.x and pip installed
pip install -r app/requirements.txt
python -m app.main example/autoscaler.yml --log-level debug
# Change example/autoscaler.yml as per your need
docker run -v /var/run/docker.sock:/var/run/docker.sock -v $(pwd)/example/autoscaler.yml:/etc/docker-swarm-service-autoscaler/autoscaler.yml sahajsoft/docker-swarm-service-autoscaler /etc/docker-swarm-service-autoscaler/autoscaler.yml --log-level=DEBUG
services:
autoscaler:
image: sahajsoft/docker-swarm-service-autoscaler
command: "/etc/docker-swarm-service-autoscaler/autoscaler.yml --log-leve=DEBUG"
volumes:
- /var/run/docker.sock:/var/run/docker.sock
configs:
- source: autoscaler.yml
target: /etc/docker-swarm-service-autoscaler/autoscaler.yml
deploy:
placement:
constraints:
- node.role == manager
Please checkout the examples here
# Run tests
py.test
# Run tests and print coverage
py.test --cov=app
# Run tests and create html covergae report
py.test --cov=app --cov-report html
# Run tests automatically on any file change
ptw
- Prometheus (Supported)
- InfluxDB (Pending): #4
Please raise an issue for feature requests & bugs. Please submit a pull request to contribute code
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