Flatcar Container Linux is a container optimized OS that ships a minimal OS image, which includes only the tools needed to run containers. The OS is shipped through an immutable filesystem and includes automatic atomic updates.

Dnspython is a DNS toolkit for Python. It can be used for queries, zone transfers, dynamic updates, nameserver testing, and many other things.

Dnspython provides both high and low level access to the DNS. The high level classes perform queries for data of a given name, type, and class, and return an answer set. The low level classes allow direct manipulation of DNS zones, messages, names, and records. Almost all RR types are supported.

dnspython originated at Nominum where it was developed for testing DNS nameservers.

Powershell script to check windows updates using NRPE/NSClient++

Checks:

• how many critical and optional updates are available
• whether the system is waiting for reboot after installed updates
  Features:
• properly handles NRPE's 1024b limitation in return packet
• hidden updates return OK state
• Performance data in return packet shows titles of available critical updates
• caches updates in file to reduce network traffic, also dramatically increases script execution speed

Return Values for NRPE:

• No updates available - OK (0)
• Hidden Updates only - OK (0)
• Updates already installed, reboot required - WARNING (1)
• Optional updates available - WARNING (1)
• Critial updates available - CRITICAL (2)
• Script errors - UNKNOWN (3)