Nagios check_redis script

This is a Nagios check script for redis written in python3. There are command line arguments for a static memory usage value in MB OR memory usage percent. Memory usage percent requires that you have maxmemory set in redis.conf. Some performance data is printed in the output.

Installation requirements

• Python3
• pip install redis

Installation

cp check_redis <PATH_TO_NAGIOS_LIBEXEC>/check_redis

• Configure Nagios to use it. (much to complicated to explain that here... read the docs)

Command line arguments

• --host
  • host ip or name (default: 127.0.0.1)
• --port
  • redis port (default: 6379)
• -w / -c
  • Static memory usage in MB
  • These options are NOT compatible with -W / -C
• -W / -C (default: 80, 90)
  • Percentage memory usage Warning and Critical Values.
  • You may want to raise these defaults, or use static values if you are evicting.
  • These options are NOT compatible with -w / -c

Example output

check_redis OK - Memory usage = 43% | used_memory_pct=43,used_memory_rss=80,keys=2,connected_clients=6,instantaneous_ops_per_sec=12,keyspace_hit_ratio=90

TO-DO

• Add Auth