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Puppet Catalog Diff Viewer

License CI Donated by Camptocamp

A viewer for json reports produced by the puppet-catalog-diff tool

The interface can be tried online at

Acking diffs

This interface allows to ack differences in order to ease the report review. Differences are acked on all nodes that have the same resource with the same diff.

A global acking button is available for sections which allows to ack all diffs in the section at once.

Starring diffs

When using the global acking button, you might want to exclude some diffs from the global acking. Starring diffs does just that. Just as for acks, stars are cross-nodes.

Using with Docker

$ docker run -it --rm -p 8080:8080

will let you access the catalog diff viewer at http://localhost:8080.

Server Side storage

The will automatically populate the drop-down list of available reports, if they can be read from reportlist.json. This file contains a record of the json files in data. Assuming you have


the reportlist.json should have the format

  "First Report": "file1",
  "Second Report": "file2"

The python script will autopopulate it with all data/*.json using the filename also as key.

With the docker image, you can put everything in /data:

$ docker run -ti \
   -v ./data:/data \
   -p 8080:8080 \

S3 storage

The viewer can automatically retrieve catalogs from an S3 bucket. In order to use this feature, create a s3_credentials.js file with the following variables:

const s3_bucketName = 'your-bucket-name';
const s3_access_key = 'your-access-key';
const s3_secret_key = 'your-secret-key';
// something like this for standard s3 and the corresponding region
const s3_endpoint   = '';
// for self hosted s3
const s3_endpoint   = '';

// if you use a path within the bucket
const s3_bucketPathPrefix = 'your-prefix';
const s3_ForcePathStyle = true;

With the docker image, you can use:

$ docker run -it --rm \
   -v ./s3_credentials.js:/data/s3_credentials.js:ro \
   -p 8080:8080 \

or using environment variables:

$ docker run -it --rm \
   -e S3_BUCKET=your-bucket-name \
   -e S3_ACCESS_KEY=your-access-key \
   -e S3_SECRET_KEY=your-secret-key \
   -p 8080:8080 \

Make sure the access key belongs to a user that can perform actions s3:GetObject and s3:ListBucket on the bucket. Here is an example bucket policy you can use to upload files from the catalog-diff machine and retrieve them in the viewer:

  "Version": "2012-10-17",
  "Id": "Policy1451988974568",
  "Statement": [
      "Sid": "Upload",
      "Effect": "Allow",
      "Principal": {
        "AWS": "arn:aws:iam::123456789:user/uploader"
      "Action": "s3:PutObject",
      "Resource": "arn:aws:s3:::bucket-id/my-site/*"
      "Sid": "ViewerList",
      "Effect": "Allow",
      "Principal": {
        "AWS": "arn:aws:iam::123456789:user/viewer"
      "Action": "s3:ListBucket",
      "Resource": "arn:aws:s3:::bucket-id"
      "Sid": "ViewerGet",
      "Effect": "Allow",
      "Principal": {
        "AWS": "arn:aws:iam::123456789:user/viewer"
      "Action": "s3:GetObject",
      "Resource": "arn:aws:s3:::bucket-id/*"

Transfer Notice

This project was originally authored by Camptocamp. The maintainer preferred that Vox Pupuli take ownership of the project for future improvement and maintenance. Existing pull requests and issues were transferred over, please fork and continue to contribute here instead of Camptocamp.