My name is Philipp C. Heckel and I write about nerdy things.
For my job, I work with file systems and image files a lot: Every day, we mess with Grub, the partition tables (MBR/GPT), EFI and BIOS systems, etc. So pretty much every day, I need to boot some image file or investigate why some image didn’t boot.
This (super duper) short post shows how to boot image files using straight kvm commands.
Let’s Encrypt is a revolutionary new certificate authority that provides free certificates in a completely automated process. These certificates are issued via the ACME protocol. Over the last 2 years or so, the Internet has widely adopted Let’s Encrypt — over 50% of the web’s SSL/TLS certificates are now issued by Let’s Encrypt.
But while there are many tools to automatically renew certificates for publicly available webservers (certbot, simp_le, I wrote about how to do that 3 years back), it’s hard to find any useful information about how to issue certificates for internal non Internet facing servers and/or devices with Let’s Encrypt.
This blog posts describes how to issue Let’s Encrypt certificates for internal servers. At my work, we issued a certificate for each of our 65,000 90,000+ BCDR appliances using this exact mechanism.
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