Signs release files
A helper tool to quickly crawl a file system and sign commonly used files for repositories, with gpg, rpm-sign, and any other similar tool.
“a tool called “merfi” … what could possibly go wrong?”
For rpm-sign, the default operation will just crawl the filesystem looking for Debian repositories containing Release files. When the proper Release file is found, merfi will proceed to sign the file like:
$ merfi rpm-sign --key "mykey" --> signing: /Users/alfredo/repos/debian/dists/trusty/Release --> signed: /Users/alfredo/repos/debian/dists/trusty/Release.gpg --> signed: /Users/alfredo/repos/debian/dists/trusty/InRelease
Like all the other supported backends, it will crawl from the current working directory unless a path is specified:
$ merfi rpm-sign --key "mykey" /opt/packages
What is really doing behind the scenes is using rpm-sign like this:
rpm-sign --key "mykey" --detachsign Release --output Release.gpg rpm-sign --key "mykey" --clearsign Release > InRelease
You can also specify a --keyfile argument to rpm-sign. This will cause merfi to copy this GPG public key as release.asc to the root of each repository:
$ merfi rpm-sign --key "mykey" --keyfile /etc/RPM-GPG-KEY-testing /opt/packages
This feature is designed for Ceph’s ISO installer (ceph-ansible), because it expects the GPG public key to be present in this location.
If you are running the rpm-sign command on a computer that is behind a NAT, you must pass the --nat argument, like so:
$ merfi rpm-sign --nat --key "mykey"
GPG support is similar to rpm-sign in that merfi will crawl a path (defaults to the current working directory) looking for Debian repositories, and sign the appropriate Release files:
$ merfi gpg –> signing: /Users/alfredo/repos/debian/dists/trusty/Release –> signed: /Users/alfredo/repos/debian/dists/trusty/Release.gpg –> signed: /Users/alfredo/repos/debian/dists/trusty/InRelease
Behind the scenes the tool is running gpg like:
gpg --armor --detach-sig --output Release.gpg Release gpg --clearsign --output InRelease Release
merfi can generate an ISO from a tree of package repositories:
$ merfi iso /opt/packages --output my-dvd.iso
This will generate two files, my-dvd.iso and my-dvd.iso.SHA256SUM. You can verify the ISO file’s integrity by passing the checksum file to the sha256sum -c command:
$ sha256sum -c my-dvd.iso.SHA256SUM my-dvd.iso: OK
About the name
“Firme” is the Spanish word for “sign” and “merfi” is the Peruvian slang for it.
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