The ‘kubectl cp‘ command is a convenient way to get files into and out of remote containers, however it requires that the ‘tar’ utility be installed inside the container. There are many images that have removed this utility because of the identified security vulnerability, while others have removed it due to the adoption of the … Kubernetes: copying files into and out of containers without ‘kubectl cp’
Ansible has support for generating self-signed certificates as well as certificates using a custom root CA (certificate authority). This is possible using the community.crypto collection. I’ve put this into a role named ansible-role-cert-with-ca available on github, and it can be used from a playbook like below: vars: # custom CA, leaving undefined will create self-signed … Ansible: creating SAN certificates with a custom root CA
Although sending a plain text message through an unauthenticated SMTP relay might be easily done with a few lines of Python code, sending rich HTML email through authenticated relays or via the Gmail API using OAuth2 requires a bit of work. In this article, I will provide sample code for sending rich HTML email with … Python: Sending HTML emails via Gmail API or SMTP relay
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