{ "IS-MASTER-DOWN-BY-ADDR": { "summary": "Determines whether a master Redis instance is down.", "complexity": "O(1)", "group": "sentinel", "since": "2.8.4", "arity": 6, "container": "SENTINEL", "function": "sentinelCommand", "command_flags": [ "ADMIN", "SENTINEL", "ONLY_SENTINEL" ], "reply_schema": { "type": "array", "minItems": 3, "maxItems": 3, "items": [ { "oneOf": [ { "const": 0, "description": "Master is up." }, { "const": 1, "description": "Master is down." } ] }, { "type": "string", "description": "Sentinel address." }, { "type": "integer", "description": "Port." } ] }, "arguments": [ { "name": "ip", "type": "string" }, { "name": "port", "type": "integer" }, { "name": "current-epoch", "type": "integer" }, { "name": "runid", "type": "string" } ] } }