{
  "id": "quorum-node",
  "title": "Set up a quorum node",
  "url": "https://redis.io/docs/latest/operate/rs/clusters/quorum-node/",
  "summary": "To reduce infrastructure costs, you can set up a quorum-only node with minimal resources.",
  "tags": [
    "docs",
    "operate",
    "rs"
  ],
  "last_updated": "2026-07-28T14:23:48-07:00",
  "page_type": "content",
  "content_hash": "95626cd3fd75df7778686a8bee15f4e0815e6e2087855e7aee4fa69c643ebd4d",
  "sections": [
    {
      "id": "overview",
      "title": "Overview",
      "role": "overview",
      "text": "Clusters require an odd number of nodes to maintain [quorum](https://en.wikipedia.org/wiki/Quorum_(distributed_computing)) and avoid [split-brain](https://en.wikipedia.org/wiki/Split-brain_(computing)) scenarios when making decisions. If you need to add another node to a cluster for quorum but want to provision fewer resources and reduce infrastructure costs, you can set up a quorum node instead of a regular node.\n\nQuorum nodes participate in cluster quorum decisions and can act as a tiebreaker. However, they do not host database shards or endpoints, which reduces their resource requirements. A quorum node should have at least 2 cores and 8 GB of RAM. See the [hardware requirements](https://redis.io/docs/latest/operate/rs/installing-upgrading/install/plan-deployment/hardware-requirements) for more details and considerations."
    },
    {
      "id": "enable-quorum-only-setting",
      "title": "Enable quorum_only setting",
      "role": "content",
      "text": "1. Run [`rladmin status nodes`](https://redis.io/docs/latest/operate/rs/references/cli-utilities/rladmin/status#status-nodes) and find a node with no shards.\n\n   In the following example, nodes without shards have `0/100` for the `SHARDS` column.\n\n   [code example]\n\n2. Enable `quorum_only` for the node using [`rladmin tune node`](https://redis.io/docs/latest/operate/rs/references/cli-utilities/rladmin/tune#tune-node):\n   [code example]\n\n3. Rerun `rladmin status nodes` to verify the quorum node shows  `0/0` for `SHARDS` and `0KB/0KB` for `PROVISIONAL_RAM`.\n\n   [code example]"
    }
  ],
  "examples": [
    {
      "id": "enable-quorum-only-setting-ex0",
      "language": "bash",
      "code": "$ rladmin status nodes\n   CLUSTER NODES:\n   NODE:ID    ROLE      ADDRESS             EXTERNAL_ADDRESS        HOSTNAME                SHARDS    CORES         FREE_RAM            PROVISIONAL_RAM        VERSION           STATUS\n   node:1     master    192.0.2.0                                   3d99db1fdf4b            0/100     2             6.33GB/7.79GB       4.93GB/6.39GB          7.8.6-36          OK\n   node:2     slave     198.51.100.0                                b87cc06c830f            2/100     2             6.44GB/7.79GB       1.04GB/6.39GB          7.8.6-36          OK\n   *node:3    slave     203.0.113.0                                 fc7a3d332458            0/100     2             6.45GB/7.79GB       4.93GB/6.39GB          7.8.6-36          OK",
      "section_id": "enable-quorum-only-setting"
    },
    {
      "id": "enable-quorum-only-setting-ex1",
      "language": "bash",
      "code": "$ rladmin tune node <node-id> quorum_only enabled",
      "section_id": "enable-quorum-only-setting"
    },
    {
      "id": "enable-quorum-only-setting-ex2",
      "language": "sh",
      "code": "$ rladmin status nodes\n   CLUSTER NODES:\n   NODE:ID    ROLE      ADDRESS             EXTERNAL_ADDRESS        HOSTNAME                SHARDS    CORES         FREE_RAM            PROVISIONAL_RAM        VERSION           STATUS\n   node:1     master    192.0.2.0                                   3d99db1fdf4b            0/100     2             6.33GB/7.79GB       4.93GB/6.39GB          7.8.6-36          OK\n   node:2     slave     198.51.100.0                                b87cc06c830f            2/100     2             6.44GB/7.79GB       1.04GB/6.39GB          7.8.6-36          OK\n   *node:3    slave     203.0.113.0                                 fc7a3d332458            0/0       2             6.45GB/7.79GB       0KB/0KB                7.8.6-36          OK",
      "section_id": "enable-quorum-only-setting"
    }
  ]
}