Acceleration Service

Acceleration Service provides a general service to Harbor with the ability to automatically convert user images to accelerated images. When a user does something such as artifact push, Harbor will request the service to complete the corresponding image conversion through its integrated Nydus, eStargz, etc. drivers.

⚠️ This project is still in progress, see more details in this proposal.

Quickstart

Build binary

$ make

Configuration (Harbor side)

Login to Harbor web interface to complete the following operation.

1. Add webhook configuration

Projects -> Webhooks -> + NEW WEBHOOK, add webhook configuration with following fields:

• Notify Type: http
• Event Type: artifact pushed
• Endpoint URL: /api/v1/conversions
• Auth Header:

2. Add robot account

Administration -> Robot Accounts -> + NEW ROBOT ACCOUNT, add robot account with following fields:

• Expiration time:
• Reset permissions: select Push Artifact, Pull Artifact, Create Tag

Generate a base64 encoded auth string using robot account name and secret like this:

$ printf '<robot-name>:<robot-secret>' | base64

Configuration (Acceleration service side)

1. Copy template config file

nydus:

$ cp misc/config/config.yaml.nydus.tmpl misc/config/config.yaml

estargz:

$ cp misc/config/config.yaml.estargz.tmpl misc/config/config.yaml

2. Edit config file

Following comments in misc/config/config.yaml, ensure base64 encoded auth string and webhook auth header be configured correctly.

Boot service

1. Ensure containerd service is running

Acceleration service depends on containerd service to manage image content, containerd service is used default if you have installed the latest docker.

$ ps aux | grep contained
root        929  0.5  0.5 2222284 22368 ?       Ssl  Sep16   4:27 /usr/local/bin/containerd

2. Boot daemon to serve webhook request in PUSH_ARTIFACT event

$ ./acceld --config ./misc/config/config.yaml

Test image conversion

1. Trigger image conversion

We can either push an image to Harbor:

$ docker push <harbor-service-address>/library/nginx:latest

Or convert an existing image manually using the accelctl CLI tool:

$ ./accelctl task create <harbor-service-address>/library/nginx:latest
$ ./accelctl list

2. Got converted image

If everything is ready, we can see the log output in acceleration service like this:

INFO[2021-09-17T05:43:49.783769943Z] Version: ecbfefc312ea78d81eb895ef7768a60caa30a281.20210917.0543
INFO[2021-09-17T05:43:49.786146553Z] [API] HTTP server started on 0.0.0.0:2077
INFO[2021-09-17T05:44:01.82592358Z] received webhook request from 192.168.1.1:46664  module=api
INFO[2021-09-17T05:44:01.826490232Z] POST /api/v1/conversions 200 552.695µs 392>5bytes 192.168.1.1  module=api
INFO[2021-09-17T05:44:01.830893103Z] pulling image 192.168.1.1/library/nginx:latest  module=converter
INFO[2021-09-17T05:44:01.916123236Z] pulled image 192.168.1.1/library/nginx:latest  module=converter
INFO[2021-09-17T05:44:01.916175337Z] converting image 192.168.1.1/library/nginx:latest  module=converter
INFO[2021-09-17T05:44:04.317992888Z] converted image 192.168.1.1/library/nginx:latest-converted  module=converter

After that, we will find converted artifact in Harbor interface with name <harbor-service-address>/nginx:latest-converted.