If you have a file with special characters (single quotes, wildcard, etc) in the name, it can be difficult to discover the exact escape sequence to correctly delete. To avoid playing with escape characters, you can simply use the inode number of the file instead. For example, let’s say you accidentally specify tar options incorrectly … Bash: deleting a file with special characters using its inode value
Managing certificates is one of the most mundane, yet critical chores in the maintenance of environments. However, this manual maintenance can be off-loaded to cert-manager on Kubernetes. In this article, we will use cert-manager to generate TLS certs for a public NGINX ingress using Let’s Encrypt. The primary ingress will have two different hosts using … Kubernetes: LetsEncrypt certificates using HTTP and DNS solvers on DigitalOcean
The JRE comes preloaded with a set of trusted root authorities, but if you are working with self-signed certificates, or SAN server certificates that were signed using your own Certificate Authority then you are going to need to add these certificates to your trusted keystore. If your Java application attempts to communicate via TLS to … Java: Loading self-signed, CA, and SAN certificates into a Java Keystore
There are numerous articles I’ve written where a certificate is a prerequisite for deploying a piece of infrastructure. This article will guide you through generating a self-signed certificate with SAN (Subject Alternative Name) and SAN wildcard entries, replacing the deprecated usage of CN=<FQDN>. In addition to the operational benefits of managing SAN, it is also … Ubuntu: Creating a self-signed SAN certificate using OpenSSL
There are numerous articles I’ve written where a certificate is a prerequisite for deploying a piece of infrastructure. This article will guide you through creating a trusted CA (Certificate Authority), and then using that to sign a server certificate that supports SAN (Subject Alternative Name). Operationally, having your own trusted CA is advantageous over a … Ubuntu: Creating a trusted CA and SAN certificate using OpenSSL