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I don't get it. If a server restarts, don't you just get a different one? Why is that disruptive? At work every machine reboots at least every month. Everythin

I don't get it. If a server restarts, don't you just get a different one? Why is that disruptive? At work every machine reboots at least every month. Everything is designed to cope with that reality.

dogecoinbase 12y ago
Did you bother to read either of the other comments in this thread before posting? Not only are the reboots of every system happening simultaneously and taking up to hours to complete, the specific issue the post links to is affected by networking issues.
- thrownaway2424 12y ago
  Yes I read both of those rather uninformative posts and the OP. What fraction of servers are going down at once? What fraction of VMs are not scheduled?
  - dogecoinbase 12y ago
    All next-gen (i.e. created within the last 20 months) servers are being rebooted at an undeterminable time within a 3-4 hour window, the window specific to the datacenter they're in. No next-gen servers are not being rebooted.
    - thrownaway2424 12y ago
      100% churn in three hours is a bit aggressive. I'm not a rackspace customer but I'm wondering why they don't (if they don't) offer service level guarantees for eviction rate and time spent not running.
ayrx 12y ago
This is a little different from the usual "virtual server goes down" scenario. This is presumably to patch the new undisclosed Xen bug so the actual physical machines running the virtual servers need to go down.
deathanatos 12y ago
> At work every machine reboots at least every month. Everything is designed to cope with that reality. Count your blessings. Not all of us work with software so well designed. For us, at least, a server going down can be anywhere from an "eh" to a desperate need for attention, depending on the exact VM. Some technologies just don't take it that well. (Including many that are on HN.) Further, every server went down in a very tight window. If you weren't replicated across regions, for all you knew, every VM might be rebooting at the same time. I know you should be replicated across regions, but again, count your blessings.
ars 12y ago
It's disruptive if you have a long running tasks and you make sure your planned reboots are in between runs - but when rackspace reboots you with barely any notice that's a big problem. And not every organization has the budget for multiple machines, many run on just a single machine. Yes, that means accepting downtime may happen - but that doesn't mean being happy about it.

I don't get it. If a server restarts, don't you just get a different one? Why is that disruptive? At work every machine reboots at least every month. Everything is designed to cope with that reality.

dogecoinbase 12y ago

Did you bother to read either of the other comments in this thread before posting? Not only are the reboots of every system happening simultaneously and taking up to hours to complete, the specific issue the post links to is affected by networking issues.

thrownaway2424 12y ago
Yes I read both of those rather uninformative posts and the OP. What fraction of servers are going down at once? What fraction of VMs are not scheduled?
- dogecoinbase 12y ago
  All next-gen (i.e. created within the last 20 months) servers are being rebooted at an undeterminable time within a 3-4 hour window, the window specific to the datacenter they're in. No next-gen servers are not being rebooted.
  - thrownaway2424 12y ago
    100% churn in three hours is a bit aggressive. I'm not a rackspace customer but I'm wondering why they don't (if they don't) offer service level guarantees for eviction rate and time spent not running.

ayrx 12y ago

This is a little different from the usual "virtual server goes down" scenario. This is presumably to patch the new undisclosed Xen bug so the actual physical machines running the virtual servers need to go down.

deathanatos 12y ago

> At work every machine reboots at least every month. Everything is designed to cope with that reality. Count your blessings. Not all of us work with software so well designed. For us, at least, a server going down can be anywhere from an "eh" to a desperate need for attention, depending on the exact VM. Some technologies just don't take it that well. (Including many that are on HN.) Further, every server went down in a very tight window. If you weren't replicated across regions, for all you knew, every VM might be rebooting at the same time. I know you should be replicated across regions, but again, count your blessings.

ars 12y ago

It's disruptive if you have a long running tasks and you make sure your planned reboots are in between runs - but when rackspace reboots you with barely any notice that's a big problem. And not every organization has the budget for multiple machines, many run on just a single machine. Yes, that means accepting downtime may happen - but that doesn't mean being happy about it.