- Mirror
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A copy of an outside software library, kept on your own server. Your machines take from your copy instead of reaching out to the original every time.
Think of it like Like photocopying a reference book for the office. If the library closes, your team can still read it.
- Snapshot
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A copy of the software library frozen at a single moment. Once it is made, it never changes. You can come back to it months later and find exactly the same thing.
Think of it like Like a photograph. The world keeps moving, but the picture stays the same forever.
- Publish endpoint
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The web address your machines check when they need to install or update software. Point every machine at the same address and they all get the same thing.
Think of it like Like telling everyone in the family to shop at one specific store, so you all come home with the same brand of milk.
- Ingress policy
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Your written rule about which outside software sources are allowed onto your machines. Anything not on the list is kept out.
Think of it like Like the guest list at the door. If your name is not on it, you do not come in.
- CVE
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A public number given to a known security flaw in a piece of software. Everyone in the industry uses the same number, so people can talk about the same flaw without confusion.
Think of it like Like a recall notice on a car part. It has a number, and every garage in the country recognises it.
- Package
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A single piece of installable software, bundled into one file along with the notes a machine needs to install it. On Debian and Ubuntu these files end in .deb.
Think of it like Like a flat-pack furniture box. All the parts and the instruction sheet, in one carton.
- Repository
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A collection of software packages stored in one place, so machines have a single spot to download from.
Think of it like Like a warehouse that all the local shops order their stock from.
- Upstream
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The original supplier that your copy was taken from. If they publish a change, it flows down to you.
Think of it like Like the publisher a bookshop orders from. The shop has the books, but the publisher made them.
- APT
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The tool built into Debian and Ubuntu machines that installs and updates software. It is what actually goes and fetches a package.
Think of it like Like the app store that comes built into a phone. You do not install it. It is just there.
- dpkg
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The record kept on each individual machine listing exactly which software is installed on it right now.
Think of it like Like the receipt drawer in a kitchen. It shows everything that was actually bought and brought home.
- Signature
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A seal attached to a file that shows who produced it and proves nobody altered it afterward. If someone changes even one character, the seal stops matching. The common tool for this is called GPG.
Think of it like Like a wax seal on an envelope. If the seal is broken when it arrives, you do not trust what is inside.
- Canonical
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The company that produces Ubuntu, one of the two systems this product works with. The other is Debian, which is made by a volunteer community.
Think of it like Like the publisher whose name is printed on the spine of a book.
- Hash
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A short string of characters worked out from everything inside a file. Change any part of the file and the string changes completely, so it is an easy way to check whether two files are identical.
Think of it like Like a fingerprint. Tiny, quick to compare, and no two people share one.
- Air-gapped
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A network deliberately kept with no connection to the internet. Anything that goes in or out has to be carried in by hand.
Think of it like Like a room with no doors to the outside. Deliveries only arrive when someone physically walks them in.
- Environment
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One set of machines kept separate from your other sets. Teams usually keep the machines customers touch apart from the ones used for testing.
Think of it like Like two separate kitchens. A mess in the practice kitchen never reaches the one serving customers.
- Machine band
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The number of machines included in a pricing plan. Go past it and you move up to the next plan.
Think of it like Like the number of seats on a booking. More people, bigger table.
- PostgreSQL
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The database this product keeps its records in. It is the only other piece of software you need to run alongside it.
Think of it like Like the filing cabinet in the back office where all the paperwork is kept.
- Bearer token
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A secret string of characters that acts as a key to the system. Whoever holds it gets in, so it has to be kept private.
Think of it like Like a hotel key card. It does not know who you are. It only knows you are holding it.
- High availability
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Running more than one copy of the software at the same time, so that if one stops working the others carry on and nobody notices.
Think of it like Like the spare tire already bolted to the car. A flat becomes a delay instead of the end of the trip.
- SBOM not yet built
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A full list of every part inside a piece of software and where each part came from. Customers and auditors ask for these. This product does not produce them.
Think of it like Like the ingredients panel on the back of a food package.
Package-Master does not do this today.
- Evidence pack not yet built
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A bundle of records handed to an auditor or a customer to answer their questions about your software. This product does not produce these.
Think of it like Like gathering your receipts and statements into one folder before meeting an accountant.
Package-Master does not do this today.
