Redis failover test client

Connect to a redis server, PING it repeatedly, and reconnect upon each disconnect.

./fast_failover_client.py --help

usage: fast_failover_client.py [-h] [--host HOST] [--port PORT]
                               [--connect-timeout CONNECT_TIMEOUT]
                               [--connect-retry-interval CONNECT_RETRY_INTERVAL]
                               [--heartbeat-socket-timeout HEARTBEAT_SOCKET_TIMEOUT]
                               [--heartbeat-interval HEARTBEAT_INTERVAL]
                               [--heartbeat-key HEARTBEAT_KEY]
                               [--password PASSWORD]
                               [--tls TLS]]

optional arguments:
  -h, --help            show this help message and exit
  --host HOST           Server address (default: localhost)
  --port PORT           Server port (default: 6379)
  --connect-timeout CONNECT_TIMEOUT
                        Timeout (secs) for individual connect attempts
                        (default: 0.5)
  --connect-retry-interval CONNECT_RETRY_INTERVAL
                        Connect (secs) retry interval time (default: 0.1)
  --heartbeat-socket-timeout HEARTBEAT_SOCKET_TIMEOUT
                        PING heartbeat socket timeout (secs) (default: 0.3)
  --heartbeat-interval HEARTBEAT_INTERVAL
                        PING heartbeat interval time (secs) (default: 0.1)
  --heartbeat-key HEARTBEAT_KEY
                        Redis key name to use for heartbeat (default: None)
  --password PASSWORD   Password (default: None)
  --tls <boolean>       Use non-mutual TLS (default: False)

Use in Kubernetes

To run this in Kubernetes as a batch job:

1. Modify ffc.yaml appropriately for your envionment (hostname, password, etc)
2. Run kubectl apply -f ffc.yaml or equivalent oc command
3. Delete the job after a successful test: kubectl delete job.batch/fast-failover-client

What's New

• python3 support
• AUTH password support
• ipv6 localhost resolution
• Support for non-mutual TLS (w/SNI)
• k8s support