Re:Tarsnap outage (July 2-3, 2023) postmortem
by vintagedave on Thursday July 27, 2023 @01:37PM
(#36897279)
The infrastructure page* says,
> at the present time it is possible — but quite unlikely — that a hardware failure would result in the Tarsnap service becoming unavailable until a new EC2 instance can be launched and the Tarsnap server code can be restarted ... So far such an outage has never occurred
I read the postmortem as that a hardware failure did cause it to be unavailable and the code could not be restarted, a new server had to be built. If my assessment is correct, lessons (as Jacques mentions) could be written up and this page updated with outage information. I think one outage of a single day in fifteen years is impressive. If my ballpark math is correct, that's 99.992% uptime, ie four nines.
> at the present time it is possible — but quite unlikely — that a hardware failure would result in the Tarsnap service becoming unavailable until a new EC2 instance can be launched and the Tarsnap server code can be restarted ... So far such an outage has never occurred
I read the postmortem as that a hardware failure did cause it to be unavailable and the code could not be restarted, a new server had to be built. If my assessment is correct, lessons (as Jacques mentions) could be written up and this page updated with outage information. I think one outage of a single day in fifteen years is impressive. If my ballpark math is correct, that's 99.992% uptime, ie four nines.
* http://www.tarsnap.com/infrastructure.html