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Update a config

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Published Oct 17, 2025

Updates the configuration for a single port on a NodeBalancer.

Script linode Verified
Use in Windmill

The script

Submitted by hugo697 Bun
Verified 235 days ago
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//native
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type Linode = {
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  token: string;
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};
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/**
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 * Update a config
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 * Updates the configuration for a single port on a NodeBalancer.
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 */
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export async function main(
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  auth: Linode,
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  apiVersion: "v4" | "v4beta",
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  nodeBalancerId: string,
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  configId: string,
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  body:
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    | {
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        algorithm?: "roundrobin" | "leastconn" | "source";
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        check?: "none" | "connection" | "http" | "http_body";
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        check_attempts?: number;
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        check_body?: string;
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        check_interval?: number;
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        check_passive?: false | true;
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        check_path?: string;
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        check_timeout?: number;
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        cipher_suite?: string;
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        id?: number;
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        nodebalancer_id?: number;
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        nodes_status?: { down?: number; up?: number };
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        port?: number;
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        protocol?: "tcp";
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        proxy_protocol?: "none" | "v1" | "v2";
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        ssl_cert?: string;
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        ssl_commonname?: string;
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        ssl_fingerprint?: string;
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        ssl_key?: string;
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        stickiness?: "none" | "table";
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      }
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    | {
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        algorithm?: "roundrobin" | "leastconn" | "source";
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        check?: "none" | "connection" | "http" | "http_body";
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        check_attempts?: number;
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        check_body?: string;
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        check_interval?: number;
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        check_passive?: false | true;
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        check_path?: string;
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        check_timeout?: number;
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        cipher_suite?: string;
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        id?: number;
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        nodebalancer_id?: number;
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        nodes_status?: { down?: number; up?: number };
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        port?: number;
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        protocol?: "http";
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        proxy_protocol?: string;
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        ssl_cert?: string;
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        ssl_commonname?: string;
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        ssl_fingerprint?: string;
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        ssl_key?: string;
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        stickiness?: "none" | "table" | "http_cookie";
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      }
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    | {
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        algorithm?: "roundrobin" | "leastconn" | "source";
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        check?: "none" | "connection" | "http" | "http_body";
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        check_attempts?: number;
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        check_body?: string;
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        check_interval?: number;
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        check_passive?: false | true;
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        check_path?: string;
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        check_timeout?: number;
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        cipher_suite?: "recommended" | "legacy";
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        id?: number;
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        nodebalancer_id?: number;
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        nodes_status?: { down?: number; up?: number };
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        port?: number;
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        protocol?: "https";
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        proxy_protocol?: string;
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        ssl_cert?: string;
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        ssl_commonname?: string;
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        ssl_fingerprint?: string;
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        ssl_key?: string;
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        stickiness?: "none" | "table" | "http_cookie";
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      },
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) {
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  const url = new URL(
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    `https://api.linode.com/${apiVersion}/nodebalancers/${nodeBalancerId}/configs/${configId}`,
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  );
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  const response = await fetch(url, {
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    method: "PUT",
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    headers: {
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      "Content-Type": "application/json",
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      Authorization: "Bearer " + auth.token,
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    },
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    body: JSON.stringify(body),
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  });
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  if (!response.ok) {
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    const text = await response.text();
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    throw new Error(`${response.status} ${text}`);
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  }
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  return await response.json();
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}
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