Trigger warning: contains talk of horrible old Unix kit running horrible old Unix
There’s a good chance I’m probably a massive arsehole and I get paid for it. Which, I dunno, maybe I’m supposed to be pleased with myself about it because being disruptive is seen as a good thing these days. The last time I came across people being described as such, they were the hyperactive (or just sugared-up) kids at junior school who seemed to be convinced that it was all about them and if it wasn’t they’d throw a massive strop and wander round with a lower lip hung out like a soup-plate. I’m assuming a disruptive technology doesn’t have a howling fit in the middle of the organic vegetable section of the supermarket if it doesn’t get its own way, but then I wouldn’t be surprised if it did.
The thing about the arseholedom isn’t malevolent in the slightest, it’s more a case of going up to someone and asking them why they’re nailing their legs to the table. You get this very weird selection of looks when you do things like that. As if they’re expecting you to come up with something sarcastic about using the contact adhesive on the shelf. Then they’ll say something like ‘Well we’ve always nailed our legs to the table in this department because it keeps the bees from flying to Winchcombe.’ Which, um, okay…
I mean, there’s no answer to that. Especially when some manager piles out of the end office going “D’you want the bees to go to Winchcombe? Do you? Because that’s what’s going to happen if you don’t buck your ideas up and crack on with that hammering.”
But you have to try. You point to one of the chairs in the corner and suggest that using those would be much less unpleasant. That’s when the trouble really starts. The manager goes pop-eyed and kicks off about ‘You smart buggers in IT think you know everything coming down here with your ideas I don’t have time for ideas there’s barely enough time to send Bob here down to the hardware shop for more nails, what with the bleeding and the Tetanus jabs and now you want us to cross-train to chairs I’m glad you think we all sit around with glue-guns like you wasters someone should sort you lot out once and for all.’
So you pull a chair over and they look at you like you just shat out a railway station.
What this is really about is that years ago (HP-UX 10.20 ago, in fact) I was given a HP9000 to look after. In poking around the filesystem to see what dreadful sort of albatross I’d been handed, I found a whole pile of cron-jobs that ran scripts to monitor sendmail and some more scripts that re-started sendmail and further scripts that tested the state of earlier scripts. It all seemed a bit pointless because even then sendmail could more or less be left alone to generate remote root exploits and sometimes deliver mail.
I asked one of the longer-serving chaps and he came over all leg-nailing. Apparently it wasn’t to be touched because sendmail was dreadfully unreliable and crashed every half hour.
I nodded, smiled and went off to throw away all the junk and upgrade the sendmail install to $latest.
It didn’t crash.
The point being that writing long-lived daemon processes is really very well known science and instead of mucking about with multiple layers of monitoring and backup, you’re much better off making the daemon work right.