Sending Commands to Multiple Nodes in an ioredis Cluster

Ioredis would like to send commands to multiple nodes in the cluster (such as flushall and keys).

After reviewing the following documentation, I was going to use the node list that I got from Cluster#nodes, but when I called Cluster#nodes, it returned an empty array and I couldn't continue.
https://github.com/luin/ioredis/blob/master/README.md
Running commands to multiple nodes item

We are testing with the following source code to verify the node list.

var Redis=require('ioredis');

varcluster=newRedis.Cluster([{{
  host: '127.0.0.1',
  port —7000
}, {
  host: '127.0.0.1',
  port —7001
}, {
  host: '127.0.0.1',
  port —7002
}]);

console.log(cluster.nodes());

When I tried outputting the cluster, the nodes did not contain any values as shown below.

Cluster{
  domain —null,
  _events: {},
  _eventsCount: 0,
  _maxListeners: undefined,
  slots: [ ],
  retryAttempts: 0,
  delayQueue:DelayQueue {queues:{},timeouts:{},
  offlineQueue: 
   US>Denque{
     _head —0,
     _tail —0,
     _capacityMask—3,
     _list: <4 empty items>},
  isRefreshing: false,
  connectionEpoch: 1,
  options: 
   { showFriendlyErrorStack: false,
     clusterRetryStratey: Function: clusterRetryStratey,
     enableOfflineQueue: true,
     enableReadyCheck: true,
     scaleReads: 'master',
     maxRedirections—16,
     retryDelayOnFailover: 100,
     retryDelayOnClusterDown: 100,
     retryDelayOnTryAgain: 100,
     slotsRefreshTimeout: 1000,
     slotsRefreshInterval: 5000,
     dnsLookup: Function:lookup},
  scriptsSet: {},
  startupNodes: 
   [{host:'127.0.0.1', port:7000},
     { host: '127.0.0.1', port:7001},
     { host: '127.0.0.1', port:7002} ,
  connectionPool: 
   ConnectionPool {
     domain —null,
     _events: 
      { '-node': Array,
        '+node': Array,
        drain —Function,
        nodeError: Function},
     _eventsCount—4,
     _maxListeners: undefined,
     redisOptions: undefined,
     nodes: {all:{}, master:{}, slave:{},
     specifiedOptions: {},
  subscriber: 
   ClusterSubscriber {
     connectionPool: 
      ConnectionPool {
        domain —null,
        _ events —Object,
        _eventsCount—4,
        _maxListeners: undefined,
        redisOptions: undefined,
        nodes —Object,
        specifiedOptions: {},
     emitter: Circular,
     started: false,
     subscriber:null},
  status: 'connecting'}

Please let me know if there is anything wrong or missing.

redis

2022-09-30 13:47

1 Answers

You can now retrieve node information with the following correspondence:

var Redis=require('ioredis');

varcluster=newRedis.Cluster([{{
  host: '127.0.0.1',
  port —7000
}, {
  host: '127.0.0.1',
  port —7001
}, {
  host: '127.0.0.1',
  port —7002
}]);

// console.log (cluster);

cluster.on('connect',()=>{
  console.log(cluster);
});

2022-09-30 13:47

If you have any answers or tips

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