Cross-posting from where I've written up some other pieces:
- How to set up Ceph RGW StaticSites (S3 Website mode). I wrote the code over the course of the last year, and here's the first solid documentation for setting it up now. As for 'using' it, your S3 client with WebsiteConfiguration support should just work.
- Boto S3: how to muck with where ( Read more... )

This requires temporarily having 2x the size of your LVM volume. You need to create a mirror of your data, with the new leg of the mirror striped over the target disks, then drop the old leg of the mirror that was not striped. If you want to stripe over ALL of your disks (including the one that was already used), you also need to specify --alloc ( Read more... )

Some quick notes on upgrading a Hammer-era Ceph RGW setup to Jewel, because the upstream notes don't cover it well. The multisite docs are the closest there is, but here's what I put together instead.

• The Zone concept has remained the same.
• A Region is now a Zonegroup.
• The top-level RegionMap is moved inside the content of a Period
• Only one Period ( Read more... )

Some mis-reading the help for 'rbd resize' recently lead somebody to making an RBD volume extremely large, if the units are bytes, this command makes sense:
rbd resize --size $((155*1024*1024*1024)) $RBD_VOL_NAME
But, as it happens, the units are actually in MiB.

# rbd info $RBD_VOL_NAME ( Read more... )

For the mutt users with GnuPG, depending on your configuration, you might notice that mutt's handling of GnuPG mail stopped working with GnuPG. There were a few specific cases that would have caused this, which I'll detail, but if you just want it to work again, put the below into your Muttrc, and make the tweak to gpg-agent.conf. The underlying ( Read more... )

This is a slightly edited copy of an email I send to the mailing lists for my local hackspace, VHS. I run their mailing lists presently for historical reasons, but we're working on migrating them slowly.

Hi all,

Speaking as your email list administrator here. I've tried to keep the logs ( Read more... )

One of my past consulting customers, came to me with a problem. He'd been relatively diligent in upgrading his servers since last I spoke (it had been some years), and now the admin panel on one of his client's very old PHP websites was no longer working.

I knew the code had some roots back to at least PHP3, at the file headers I'd previously seen ( Read more... )

Munin is commonly used to graph lots of systems stuff, however it lacks a common piece of functionality: 95th percentile.

The Munin bug tracker has ticket #443 sitting open for 7 years now, asking for this, and proving a not-great patch for it.

I really wanted to add 95th percentile to one of my complicated graphs (4 base variables, and 3 derived ( Read more... )

So recently at one of the things I do for money, we got some used APC PDUs, AP7900. You can get them on eBay now for $100-$150USD, including shipping. They still sell the identical model, so there's nothing wrong with used gear. However, when they come, it's possible that the last owner didn't remove the passwords. There are some general guides on ( Read more... )

Running into another system today with the fun python-exec block, I realise that while it has been discussed on the Gentoo mailing lists, and the forums slightly, there's been hardly any posts about it in the blog stream.

I'm not going to go into what caused it, but rather solutions for package conflicts in the short term, and also the long-term. ( Read more... )