RRDPIT

"rrdpit" is a small little tool that can be pointed at a directory on your system, and produce RPKI RRDP (RFC 8182) notification, snapshot, and delta files. You will need to use an http server of your preferred flavour to deliver these files to the world.

WARNING:

This tool is designed to be run in between publication runs, but not during. As part of the syncing process the source directory is crawled recursively. If there are any changes made to the paths during the sync then this can result in RRDP snapshots and delta containing inconsistent repository state.

This situation would resolve itself when rrdpit runs again while there are no changes being made, but it could cause errors and noise for RPKI validators.

So, the best option is to run this when it is known that there will be no changes made to the source. E.g. when a non RRDP capable publication server knows that it's done writing content, it could trigger rrdpit, and wait with writing new content until rrdpit is done.

Of course, the safest option might still be to use an RRDP capable RPKI Publication Server instead so this extra helper tool would not be needed.

Changelog

Release 0.1.0

Updated all dependencies to their most recent version.

The command line interface was rewritten. Some arguments may no longer work the same way as they did (most notably the shorthands such as -h).

The --rsync and --https arguments have been normalised to always end in a /.

There are now prebuilt packages for:

• Debian (10/11/12)
• Ubuntu (20.04/22.04/24.04)
• RHEL (8/9/10)

Release 0.0.4

Updated ring to 0.17.

Release 0.0.3

Add option to limit the maximum number of deltas using --max_deltas. Keeping too many deltas will result in large RRDP notification files if the individual deltas are much smaller than the snapshot. This can have a big impact on the server if many RPs request a large notification file.

The default limit is set to 25. This value will work well if rrdpit runs every minute as it's more than twice the number of the typical RP fetch interval (10 minutes). If rrdpit runs less frequently then this number can be lowered. Essentially, one should keep enough deltas so that returning RPs never need to load the snapshot.

The minimum value of this setting is 1.

Release 0.0.2

Ignore hidden files in the source directory. I.e. exclude any and all files and folders starting with a '.' character.

Release 0.0.1

Initial release.

Installing rrdpit

NLnet Labs repository

Debian / Ubuntu

First update the apt package index:

sudo apt update

Then install packages to allow apt to use a repository over HTTPS:

sudo apt install \
  ca-certificates \
  curl \
  gnupg \
  lsb-release

Add the GPG key from NLnet Labs:

curl -fsSL https://packages.nlnetlabs.nl/aptkey.asc | sudo gpg --dearmor -o /usr/share/keyrings/nlnetlabs-archive-keyring.gpg

Now, use the following command to set up the main repository:

Debian

echo \
"deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/nlnetlabs-archive-keyring.gpg] https://packages.nlnetlabs.nl/linux/debian \
$(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/nlnetlabs.list /dev/null

Ubuntu

echo \
"deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/nlnetlabs-archive-keyring.gpg] https://packages.nlnetlabs.nl/linux/ubuntu \
$(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/nlnetlabs.list > /dev/null

Update the apt package index once more:

sudo apt update

You can now install rrdpit with:

sudo apt install rrdpit

RHEL / Rocky Linux / Alma Linux

First create a file named /etc/yum.repos.d/nlnetlabs.repo, enter this configuration and save it:

[nlnetlabs]
name=NLnet Labs
baseurl=https://packages.nlnetlabs.nl/linux/centos/$releasever/main/$basearch
enabled=1

Add the GPG key from NLnet Labs:

sudo rpm --import https://packages.nlnetlabs.nl/aptkey.asc

You can now install rrdpit with:

sudo yum install -y rrdpit

Compile it yourself

Assuming you have rsync and the C toolchain but not yet Rust, here’s how you get rust installed.

curl https://sh.rustup.rs -sSf | sh
source ~/.cargo/env

If you have an old version of rust installed you may have to update it.

rustup update

To install 'rrdpit' under your user's home directory, use this:

git clone git@github.com:NLnetLabs/rrdpit.git
cd rrdpit
cargo install

If you have an older version of rrdpit installed, you can update via

cargo install -f

Using rrdpit

You can ask rrdpit for help.

rrdpit --help
Dist to RPKI RRDP

Usage: rrdpit [OPTIONS] --source <dir> --target <dir> --rsync <uri> --https <uri> [clean]

Arguments:
  [clean]  Clean up target dir (handle with care!)

Options:
      --source <dir>         source directory
      --target <dir>         target directory
      --rsync <uri>          base rsync uri
      --https <uri>          base rrdp uri
      --max_deltas <number>  Limit the maximum number of deltas kept. Default: 25. Minimum: 1
  -h, --help                 Print help
  -V, --version              Print version

Note that 'clean' is optional. If used rrdpit will try to clean out the target dir, i.e. it will remove unused session id dirs, and unused version directories for delta files which are no longer referenced.

Use this option with care. You do NOT want to use this and accidentally use a system directory for the --target option. Especially if you run this as root, which would be ill-advised as well.

Examples

Sync the entire ARIN RPKI repository:

$ mkdir -p tmp/arin
$ cd tmp/arin/
$ mkdir source
$ rsync -zarvh rsync://rpki.arin.net/repository ./source/
receiving file list ... done
./
arin-rpki-ta.cer
arin-rpki-ta/
arin-rpki-ta/5e4a23ea-e80a-403e-b08c-2171da2157d3.cer
arin-rpki-ta/arin-rpki-ta.crl
arin-rpki-ta/arin-rpki-ta.mft
arin-rpki-ta/5e4a23ea-e80a-403e-b08c-2171da2157d3/
.....
.....

sent 158.78K bytes  received 11.08M bytes  976.85K bytes/sec
total size is 14.25M  speedup is 1.27

Now create RRDP files in a target dir:

$ mkdir target
$ time rrdpit --https https://rpki.arin.net/rrdp/ \
              --rsync rsync://rpki.arin.net/repository/ \
              --source ./source/ \
              --target ./target/

real  0m0.848s
user  0m0.385s
sys   0m0.258s

Check that all expected files are there, or well, at least the number:

$ find ./source/ -type f | wc -l
    7031

$ grep uri ./target/8e142e20-236c-4694-8430-b05693fab150/1/snapshot.xml | wc -l
    7031

(note that that uuid is a randomly generated session id, used when the target dir is empty)

$ rm source/arin-rpki-ta.cer 
$ time rrdpit --https https://rpki.arin.net/rrdp/ \
              --rsync rsync://rpki.arin.net/repository/ \
              --source ./source/ \
              --target ./target/

real  0m1.484s
user  0m1.285s
sys   0m0.186s

$ find target
target
target/8e142e20-236c-4694-8430-b05693fab150
target/8e142e20-236c-4694-8430-b05693fab150/1
target/8e142e20-236c-4694-8430-b05693fab150/1/snapshot.xml
target/8e142e20-236c-4694-8430-b05693fab150/2
target/8e142e20-236c-4694-8430-b05693fab150/2/snapshot.xml
target/8e142e20-236c-4694-8430-b05693fab150/2/delta.xml
target/notification.xml

$ cat ./target/notification.xml 
<notification xmlns="http://www.ripe.net/rpki/rrdp" version="1" session_id="8e142e20-236c-4694-8430-b05693fab150" serial="2">
  <snapshot uri="https://rpki.arin.net/rrdp/8e142e20-236c-4694-8430-b05693fab150/2/snapshot.xml" hash="3e8645f306c3c9a888c236fc923128959c88ee2d7abad11802a2d201a29f992f" />
  <delta serial="2" uri="https://rpki.arin.net/rrdp/8e142e20-236c-4694-8430-b05693fab150/2/delta.xml" hash="c08298b02f4e53a652bc6bc6d66c136e2ee9181d19d616e90bfd80b50341d6eb" />
</notification>

$ cat ./target/8e142e20-236c-4694-8430-b05693fab150/2/delta.xml 
<delta xmlns="http://www.ripe.net/rpki/rrdp" version="1" session_id="8e142e20-236c-4694-8430-b05693fab150" serial="2">
  <withdraw uri="rsync://rpki.arin.net/repository/arin-rpki-ta.cer" hash="88e8ed8bb7bdafb8942c82cb6816bb65f37372a8f67a26c045c0103e42996b9e" />
</delta>

Note that if you sync again, and there are no changes in the source dir, no deltas will be written:

$ time rrdpit --https https://rpki.arin.net/rrdp/ \
              --rsync rsync://rpki.arin.net/repository/ \
              --source ./source/ \
              --target ./target/

real  0m1.495s
user  0m1.292s
sys   0m0.190s

$ find target
target
target/8e142e20-236c-4694-8430-b05693fab150
target/8e142e20-236c-4694-8430-b05693fab150/1
target/8e142e20-236c-4694-8430-b05693fab150/1/snapshot.xml
target/8e142e20-236c-4694-8430-b05693fab150/2
target/8e142e20-236c-4694-8430-b05693fab150/2/snapshot.xml
target/8e142e20-236c-4694-8430-b05693fab150/2/delta.xml
target/notification.xml

rrdpit will also perform some sanity checks on the existing RRDP files, and if it finds an issue it will use a new session:

$ find target -type f
target/8e142e20-236c-4694-8430-b05693fab150/1/snapshot.xml
target/8e142e20-236c-4694-8430-b05693fab150/2/snapshot.xml
target/8e142e20-236c-4694-8430-b05693fab150/2/delta.xml
target/notification.xml

$ echo "corrupt" > target//8e142e20-236c-4694-8430-b05693fab150/2/delta.xml


$ rrdpit --https https://rpki.arin.net/rrdp/ \
         --rsync rsync://rpki.arin.net/repository/ \
         --source ./source/ \
         --target ./target/
         
$ find target -type f
target/07cfc1ce-e7d9-4bec-8a70-9feb76778700/1/snapshot.xml
target/8e142e20-236c-4694-8430-b05693fab150/1/snapshot.xml
target/8e142e20-236c-4694-8430-b05693fab150/2/snapshot.xml
target/8e142e20-236c-4694-8430-b05693fab150/2/delta.xml
target/notification.xml

Optionally you can let rrdpit clean up old files as well:

$ rrdpit --https https://rpki.arin.net/rrdp/ \
         --rsync rsync://rpki.arin.net/repository/ \
         --source ./source/ \
         --target ./target/ \
         clean

$ find target -type f
target/07cfc1ce-e7d9-4bec-8a70-9feb76778700/1/snapshot.xml
target/notification.xml

Future

This code can possibly use more testing. And some things can be cleaned up. However, it seems to work well from the testing we have done.

Of course you can create issues, but given that our main effort is directed at Krill for the moment, which includes its own RRDP server, we cannot guarantee that issues will get a high priority. Pull requests may get more mileage ;)