File Safe

Goals and implementation

The collector file safe is a S3-like file storage with the following features:

  • upload and download over https

  • user or node authentication

  • fine-grained ACLs

  • immutable files

  • file integrity check upon download request

  • unique file version id

  • binary and text file types

Safe content search

Using the collector web interface

The safe can be searched either using the safe view column filters, or using the header’s search tool. Using the latter method, the “safe:<pattern>” syntax can be used to search the safe only.

Using om node collector cli

$ om node collector cli -- get /safe --props uuid,name,uploaded_date --filter name~%resolv% --filter "uploaded_date>2015-10-15"
 uuid                                                   uploaded_date       name
|safe.uuid.9a575b137e43ddde.7265736f6c762e636f6e66.conf|2015-10-15 10:04:33|/etc/resolv.conf ref5|
|safe.uuid.98310537fa921428.7265736f6c762e636f6e66.conf|2015-10-15 10:12:19|/etc/resolv.conf ref5|
|safe.uuid.8d9012b0056bd4ce.7265736f6c762e636f6e66.conf|2015-10-15 10:12:47|/etc/resolv.conf ref5|
|safe.uuid.bb6041401edc4e51.7265736f6c762e636f6e66.conf|2015-10-15 10:13:40|/etc/resolv.conf ref5|
|safe.uuid.a494ab792666883c.7265736f6c762e636f6e66.conf|2015-10-15 10:14:23|/etc/resolv.conf ref5|
|safe.uuid.9a993b63a0dfec88.7265736f6c762e636f6e66.conf|2015-10-15 10:15:40|/etc/resolv.conf ref5|
|safe.uuid.a552480bb99faf09.7265736f6c762e636f6e66.conf|2015-10-15 10:18:45|/etc/resolv.conf ref5|
|safe.uuid.800c5b83f25d089a.7265736f6c762e636f6e66.conf|2015-10-15 10:21:54|/etc/resolv.conf ref5|
|safe.uuid.a6b87a493d780133.7265736f6c762e636f6e66.conf|2015-10-15 10:22:29|/etc/resolv.conf ref5|
|safe.uuid.9fe62906afaf8498.7265736f6c762e636f6e66.conf|2015-10-15 10:28:21|/etc/resolv.conf ref5|
|safe.uuid.94ac04753bbe7b58.7265736f6c762e636f6e66.conf|2015-10-15 10:31:15|/etc/resolv.conf ref5|
|safe.uuid.b8fff57ea749eef2.7265736f6c762e636f6e66.conf|2015-10-15 10:31:43|/etc/resolv.conf ref5|
|safe.uuid.b8b684977f854261.7265736f6c762e636f6e66.conf|2015-10-15 10:32:41|/etc/resolv.conf ref5|
|safe.uuid.af67647d9c857fa4.7265736f6c762e636f6e66.conf|2015-10-15 10:35:00|/etc/resolv.conf ref5|
|safe.uuid.9c87f0be85771222.7265736f6c762e636f6e66.conf|2015-10-15 10:35:16|/etc/resolv.conf ref5|
|safe.uuid.aaeb1e59c21d4da8.7265736f6c762e636f6e66.conf|2015-10-15 10:41:50|/etc/resolv.conf ref5|
|safe.uuid.9e0382beb8ea43b3.7265736f6c762e636f6e66.conf|2015-10-15 10:51:49|/etc/resolv.conf ref5|

Creating a safe file using the collector web interface

A “add safe file” tool is accessible directly from the navigation menu.

A file created using this tool has no initial content. An upload should follow.

Upload/Download using the collector web interface

Upload and download buttons are located in the safe file properties tab.

Upload/Download using nodemgr

The safe cli command Syntax

$ om node collector cli -- safe --help
Usage: nodemgr.py [options]

Upload, download and manage files in the collector safe. The safe is a file
sharing facility with access control rules for nodes and users making it
suitable to serve compliance reference files.

Options:
  -h, --help   show this help message and exit
  --ls         List the accessible files in the safe.
  --upload     Upload the file pointed by --file to the safe. Optionally give
               a name using --name.
  --download   Download from the safe the file pointed by --file to the file
               path or directory pointed by --to.
  --file=FILE  The safe file uuid to download, or the local file to upload.
  --to=TO      The local file path or directory name to download.
  --name=NAME  The user-friendly name to attach to the upload.

Example upload

Create a new file

$ om node collector cli -- safe --upload --file /etc/resolv.conf --name resolv.conf

Upload a new version of an existing file

$ om node collector cli -- safe --upload --file /etc/resolv.conf --name resolv.conf --id 59

Oneliner to store a secret in the safe

$ echo -n s3cr3t | om node collector cli -- safe --upload --name mysecret --file /dev/stdin
{
    "data": {
        "id": 56,
        "md5": "cc414bfc9c00475b59c87595299ff31d",
        "name": "mysecret",
        "size": 5,
        "uploaded_date": "2018-03-25 22:49:05",
        "uploaded_from": "10.0.3.1",
        "uploader": 1,
        "uuid": "safe.uuid.aaab49ba4f926d2a.706970653a5b3135343430323733335d.txt"
    }
}

Example download

By content uuid

$ om node collector cli -- safe --download --file safe.uuid.a44b45aa173dfe3c.7265736f6c762e636f6e66.conf --to /tmp/foo
.
downloaded

$ cat /tmp/foo
nameserver 8.8.8.8

By id (last content version)

$ om node collector cli -- safe --download --file 59 --to /tmp/foo
.
downloaded

$ cat /tmp/foo
nameserver 8.8.8.8

Safe support in compliance

The files compliance object is able to fetch file content from the safe. To that end, just use the safe://<file id> format in the files rule ref key. The path key specifies where the file should be installed.

Safe support in service configurations

The {safe://<id>} and {safe://<uuid>} service configuration references are automatically resolved if the service app code responsibles are allowed to read the corresponding secrets.

Those secrets are obfuscated in the service action logs.