When you have a bunch of computers networked, each of them is assigned a unique number, so when other computers send data on the wire, they can say who it is meant for (imagine each blurb of data starting out like: “yo, I’m sending these next 500 bytes for computer 0A123FBC32, here they come”).
Now the right computer will listen, but it doesn’t know what program the data is for - is it a chunk of a file your browser is downloading? Or the email your email app wants to display? Or perhaps a join request from your buddy’s computer for the Minecraft game you’re hosting?
So in addition to the unique number of the target computer, the data also specifies a “port number”, which tells the computer which of its running programs the data is meant for (programs ask the computer’s operating system: “if any network data arrives on port XY, give it to me”). Some ports have become standards - for example, a program that serves web pages to other computers would typically ask the operating system that any data arriving on the computer that indicates port numbers 80 and 443 should be given to it, and when a web browser wants to fetch a web page, it will send a request to the computer serving the page, defaulting to port 80 o 443.
If you dig deeper, you’ll find that there are even more unique numbers involved and routers/firewalls let data through not only by port number but also by distinguishing between data that is the initial request to another computer’s port number and data that is an answer to an earlier seen request – and more.
I’m on OpenRC, so I can’t say anything about systemd, but I have several SSHFS mounts (non-auto) listed in my fstab
:
root@192.168.0.123:/random-folder/ /mnt/random-folder fuse noauto,uid=1000,gid=100,allow_other 0 0
Is that similar to what you’ve tried in your fstab? I’d assume replacing noauto
with auto
should just work, but then again, I haven’t tried it (and rebooting my system right now would be very inconvenient, sorry).
It also might require you to either use password-based login and specify the password or store the SSH keys in the .ssh
directory of the user doing the mount (should be root with auto
set).
I liked agile as it was practiced in the “Extreme Programming” days.
Rather than attempt to design the perfect system from the get-go, you accept that software architecture is a living, moving target that needs to evolve as your understanding of the problem evolves.
Rather than stare down a mountain of ill-defined work, you have neat little user stories that can be completed in a few days at most and you just move around some Kanban cards instead of feeding a soul-sucking bureaucratic ticketing, time tracking and monitoring system.
Rather than sweat and enter crunch mode for deadlines, the project owners see how many user stories (or story points or perfect hours) the team completes per week and can use a velocity graph / burndown chart to estimate when all work will be completed.
.
But it’s just a corporate buzzword now. “We’re agile” often enough means “we have no plan, take no responsibility and expect the team to wing it somehow” or “we cargo cult a few agile ideas that feel good to management, like endless meetings with infinite course changes where everyone gives feel-good responses to the managers.”
Having a goal, a specification, a release plan, a vision and someone who is responsible and approachable (the “project owner”) are all part of the agile manifesto, not something it tries to do away with. I would be sad if agile faces the same fate as the waterfall model back in its time and even sadder if we return to the time-tracking-ticket-system-with-Gantt-chart hell as the default.
Maybe we need a new term or an “agility index” to separate the cases of “incompetent manager uses buzzword to cover up messy planning” from the cases of “project owner with a clearly defined goal creates a low-bureaucracy work environment for his team.” :)