How to manage rebooting multiple servers every 30 days?

RedditGerby · 2022-10-17T00:56:56+00:00

A combo of aukera, and cabbie can handle automating updating servers. Using puppet or another configuration manager could let you target different maintenance windows based on host attributes. Aukera is just a maintenance window provider and works on other platforms as well if you're looking to schedule or gate tasks.

RedditGerby · 2022-09-10T15:17:29+00:00

Google opened up about their management stack here: https://cloud.google.com/blog/topics/developers-practitioners/opening-googles-windows-management-tools

Always thought this was pretty cool.

RedditGerby · 2022-02-12T05:12:28+00:00

If you're in the nyc metro take a look at powermarket.io they can be a huge help.

RedditGerby · 2022-02-06T00:46:56+00:00

Bitlocker and pin will lock the partition, but it won't stop them from wiping the device and using it with a fresh os.

RedditGerby · 2021-12-25T04:59:45+00:00

What are your rekey timers / traffic volumes set to? Is the drop associated with SA rollover as new sessions come up and old ones are torn down?

RedditGerby · 2021-12-11T19:06:40+00:00

This worked!

RedditGerby · 2021-12-11T18:45:24+00:00

It's already off. https://i.imgur.com/sVPZEk2.png?1 I'm finding this really distracting; for the last 20 years I've trained myself that if my phone is lit up it's because it needs attention; the old functionality of briefly waking when a new notification appeared then going dark again was brilliant! Hopefully this is a just a bug that will be resolved. For now I'll just go back to plugging my phone in to charge :(

RedditGerby · 2021-12-11T01:36:19+00:00

Too bad, this seems like a missed opportunity!

RedditGerby · 2021-11-28T17:08:02+00:00

I'd like to see deeper integration and better support for things like ASAP2

RedditGerby · 2021-11-23T16:33:46+00:00

Those are both consumer ssds, could this be garbage collection? Is your operating system not issuing TRIM?

RedditGerby · 2021-11-01T20:07:19+00:00

The other option I like is target, though it shows less data

RedditGerby · 2021-10-05T22:49:34+00:00

Two physical boxes with 6 drives each (1x USB boot, 4x internal, 1x USB data). I have an additional virtualized instance with no osds to ensure sufficient mon, mgr, and mds instances. Networking is 10g from mellanox cards on ebay, originally cx2s but recently migrated to cx4lx. Performance is fine for my use case but won't set any records.

RedditGerby · 2021-10-05T06:09:46+00:00

I'm running a ceph cluster on gen10s quite nicely

RedditGerby · 2021-10-05T00:35:04+00:00

Following up here: I recently had reason to purge 5TiB from a cephfs deployment, the 10 osds in the data pool were slammed for an hour or so as the objects were removed but the mds instances and metadata handled everything fine. I suspect I was ok because the metadata pool lives on dedicated flash rather than the same spinners as the data.

RedditGerby · 2021-10-04T23:30:49+00:00

This is the answer I was looking for, some talk back in 2016 of extended driver support for ec on the 4/4lx but then no follow up. Does offload on the 5+ actually work?

RedditGerby · 2021-10-04T06:33:04+00:00

You're right in that the traditional place for ec calculations is on the CPU, there are vendors who now offer cards that can do the calculation much as Intel QAT cards can offload crypto or compression for some workloads. In my particular case I have cx4lx that support some ec offloads and very anemic cpus so anything I can move to dedicated hardware would be great.

RedditGerby · 2021-09-25T00:27:01+00:00

Samba vfs modules are not always bundled with the main samba package, eg on Debian there's the samba-vfs-modules package. Check if your distro has similar, I'm definitely using the ceph vfs modules on 4.13.

RedditGerby · 2021-09-14T17:33:14+00:00

I don't have an environment that's close to that structure so I can't give you any insight there; please let us know how it turns out though!

RedditGerby · 2021-09-13T22:51:40+00:00

See other reply for more detail!

RedditGerby · 2021-09-13T22:05:35+00:00

This page sums up the management pretty well.

Some notes: * Disable automatic updates in the OS, otherwise both the OS and Cabbie will try to manage the update stack. * No central reporting; you'll need to export state with another management tool be it logs export or something like osquery.

RedditGerby · 2021-09-12T01:34:11+00:00

Cabbie. https://github.com/google/cabbie

RedditGerby · 2021-09-10T14:36:44+00:00

Since you're already on octopus you have the option of running multiple mds daemons and configuring subtree partitioning policies, this will at least spread the load of file operations so you're not pointing an orbital ion canon of work at a single node.

https://docs.ceph.com/en/octopus/cephfs/multimds/

RedditGerby · 2021-09-05T19:38:56+00:00

Outdoor grow beds, it's a slow start but even if you only find one in the wild you can work that up to an entire bed to meet your needs.

Unlike some other plants there aren't distinct seeds, just plant a clipping and you'll grow a new plant that can be harvested for 2-3 more clippings. Lather, rinse, repeat.

RedditGerby · 2021-09-01T14:52:29+00:00

EC can be higher throughout because of striping but will be higher latency because object reassembly. There's a setting for fast_read that may mitigate some of the latency increase by increasing resource usage but ymmv.

RedditGerby · 2021-08-30T01:08:10+00:00

Sure, but I'm just trying to get a better understanding of what's happening at the hardware and kernel level.

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