Corresponding Option in dragonfly.conf for DFLYCLUSTER CONFIG ?

[chamalis]

Hello all,

I am trying to pass the example found in the documentation for cluster mode:

[  // Array of node-entries
  {  // Node #1
    "slot_ranges": [
      { "start": X1, "end": Y1 },  // Slots [X1, Y1) owned by node 1
      { "start": X2, "end": Y2 }   // Slots [X2, Y2) are also owned by node 1
    ],
    "master": {
      "id": "...",  // Returned from DFLYCLUSTER MYID
      "ip": "...",  // The IP or hostname that *clients* should use to access this node
      "port": ...   // The port that *clients* should use to access this node
    },
    "replicas": [  // Replicas use the same fields as the master config
      { "id": "...", "ip": "...", port: ... },  // First replica for node
      { "id": "...", "ip": "...", port: ... }   // Second replica for node
    ]
  },
  { ... }, // Node #2
  { ... }, // Node #3, etc
]

via the DFLYCLUSTER CONFIG <str> command after connecting with redis-cli or netcat to the admin port, but I keep getting the same error:

(error) ERR Invalid cluster configuration.

I pass this json encoded string, which I have confirmed that is a valid json representation:

"[\n  {\n    \"slot_ranges\": [\n      { \"start\": 0, \"end\": 4096 }\n    ],\n    \"master\": {\n      \"id\": \"4d45329da3b911c9323dac7c5dc4c15572e5b119\",\n      \"ip\": \"22.33.44.55\",\n      \"port\": 6379   \n    }\n  },\n  \n  {\n    \"slot_ranges\": [\n        { \"start\": 4096, \"end\": 8192 }\n    ],\n    \"master\": {\n      \"id\": \"afb31ca9512bb4bd72d96e29319d236399024589\",\n      \"ip\": \"33.44.55.66\",\n      \"port\": 6379\n    }\n  },\n  \n  {\n    \"slot_ranges\": [\n        { \"start\": 8192, \"end\": 12288 }\n    ],\n    \"master\": {\n      \"id\": \"0a9daffaf663056ed81a3068970fb7d02533de1e\",\n      \"ip\": \"11.22.33.44\",\n      \"port\": 6379\n    }\n  },\n\n  {\n    \"slot_ranges\": [\n        { \"start\": 12288, \"end\": 16384 }\n    ],\n    \"master\": {\n      \"id\": \"b8791581ba96794cce98b078a067ce51168b861e\",\n      \"ip\": \"44.55.66.77\", \n      \"port\": 6379\n    }\n  }\n]\n"

Is there any way to pass this as a file or attribute to dragonfly.conf ?

[romange]

@chakaz might help here. Also we have cluster_mgr.py in the repo that should be able to print a valid config file.

[chakaz]

Hey there @chamalis
You can see the error in Dragonfly's logs. If this is a development instance, I'd recommend passing --logtostdout to see that more easily.
Specifically, when pushing the above config, Dragonfly prints the error: Invalid JSON cluster config: replicas is not an array null. Try adding an empty array [] as replicas to each master :)

[chamalis]

You are correct, it needs an empty list of replicas. Thank you!