LeaseWeb provides an API that can be used to request information about servers and perform some maintanance tasks like update reverse DNS entries, null route IP addresses, reboot specific server or launch rescue/reinstallation process. I will show you how to request and display identifiable information about servers in each location including data traffic details.
I am using simple shell script to manage OpenSSL
known_hosts file as it requires many small updates due to constantly changing host keys on a dynamic virtual servers.
Backport repository provides packages for stable system that are recompiled from testing or unstable distribution. It is important to know that these packages are provided as is without any security support guarantee.
Debian Stretch provides
gnupg in minimal installation as the package priority is set to important. The command is fully operational, but it requires
dirmngr to perform network operations for managing and downloading certificates.
Remove package dependencies that are now no longer needed and configure system to perform this task automatically.
init-system-helpers package that provides a helper tools for all init systems is not available in primary Debian Wheezy repositories. You need to use
wheezy-backports repository to install it on that operaing system.
Keeping an eye on the APT cache on constantly changing operating systems can be quite tedious. You can perform maintance from time to time by hand on a single server, but it does not scale well to multiple servers. It is better to automatate this task and free up your time to focus on other projects.
This is just a brief note on how to reverse a text file. It is not really useful for anything other than fun, but it is stuck in my head, so I need to write it down.
Clear the APT cache to reclaim disk space used by the downloaded packages.