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Author: halfgaar
Using ‘Require expr’ in Apache: Cannot parse expression in require line: syntax error, unexpected $end
We found that if you do what the Apache documentation says and put quotes around the expr:
Require user victron
Require expr "%{REQUEST_URI} =~ m#^/.well-known/acme-challenge/.*#"
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More recent posts on YTEC blog
As Bigsmoke indicated, we had some issues with google not finding content. For the same reason, I would like to share my insight into some stuff I write about:
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Sending mail from a NATed host with Postfix
When sending mail from a host behind NAT, you will run into trouble when the "From" says "root@host.localdomain", because receiving servers will refuse that domain.
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Download dmcrypt (cryptsetup) encryption key from remote server and auto mount
One of the inconveniences of encryption is the need to open the encrypted volume by hand when the computer/server boots. Luckily, you can easily automate that securely. You need a machine that will act as a key server, whether that's a Raspberry Pi or some VPS you hire.
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Preventing degraded array on every boot
I had a server that booted with a degraded array every time, because there was a USB drive attached to it, that messed up the auto detection. I solved it by putting this in mdadm.conf:
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Decreasing shutdown time of MySQL with large transaction log file
If you need/have a large transaction log file, a shut down can take a while. This post lists how you can force a flush before you do so, decreasing shut down time.
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Excellent article about LC resonance resulting from turn-on transients
This article gives a good explation of LC resonances caused by turn-on transients.
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Better nagios SMS and E-mail messages
Just for my references. I made changes to it before, but I now added the comments to them (for custom notifications and acknowledgements):
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Teamviewer replacements
ChunkVNC consists of three parts, InstantSupport, Repeater and Viewer.
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