secrets/dataops/redis_cluster_connection.md

Redis Cluster Connection Guide

Cluster Nodes

• Node 1: localhost:18010
• Node 2: localhost:18011
• Node 3: localhost:18012

Connection Details

• Protocol: Redis Cluster
• Max Memory: 20GB per node
• Persistence: AOF + RDB
• Cluster Enabled: Yes

Redis-CLI Examples

# Connect to cluster
redis-cli -c -p 18010

# Cluster info
redis-cli -p 18010 cluster info

# Cluster nodes
redis-cli -p 18010 cluster nodes

Python Client Example

import redis
from redis.cluster import RedisCluster

# Connect to Redis Cluster
cluster = RedisCluster(
    startup_nodes=[
        {"host": "localhost", "port": 18010},
        {"host": "localhost", "port": 18011},
        {"host": "localhost", "port": 18012}
    ],
    decode_responses=True
)

# Cluster operations
cluster.set('cluster:key', 'cluster_value')
value = cluster.get('cluster:key')
print(f"Cluster value: {value}")

Health Checks

# Check cluster health
redis-cli -p 18010 cluster info | grep cluster_state

# Check all nodes
redis-cli -p 18010 ping  # Should return PONG
redis-cli -p 18011 ping
redis-cli -p 18012 ping

# Memory usage
redis-cli -p 18010 info memory | grep used_memory_human

# Persistence status
redis-cli -p 18010 info persistence | grep aof_enabled

Configuration Notes

• Data Directory: /data/redis/node*/data/
• Append Only File: Enabled for durability
• Max Memory: 20GB per node
• Cluster Replication: Each node has replicas

Security

• ❗ Localhost binding only
• ❗ No authentication required
• ❗ Monitor cluster state regularly
• ❗ Verify AOF persistence working
• ❗ Regular backup of RDB files recommended

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Last Updated: September 4, 2025