我可以在 Kubernetes 中将 YAML 代码部署为没有 YAML 文件的文件吗

Question

可以通过使用 kubectl apply 或使用 helm install 一次部署所有 YAML 文件，轻松地在 Kubernetes 中部署 YAML 文件，但我正在寻找一种方法，通过它我能够不实际创建文件部署YAML文件，直接通过nodeJS代码部署

我现在在做什么：

我可以部署由我的 nodeJS 代码创建的 YAML 文件，它首先创建 JSON 对象将其解析为 YAML，然后生成其 YAML 文件，同样的代码能够部署这些文件文件。

我需要的：

我希望能够在不创建 YAML 文件的情况下直接部署 YAML 代码。

Answer 1

要从命令行应用，请使用：

node-js-generate-yaml-command | kubectl apply -f -

或直接从代码使用 kubectl javascript 客户端 https://github.com/kubernetes-client/javascript

kubectl apply的例子可以在这里找到https://github.com/kubernetes-client/javascript/blob/master/examples/typescript/apply/apply-example.ts

import * as k8s from '@kubernetes/client-node';
import * as fs from 'fs';
import * as yaml from 'js-yaml';
import { promisify } from 'util';

/**
 * Replicate the functionality of `kubectl apply`.  That is, create the resources defined in the `specFile` if they do
 * not exist, patch them if they do exist.
 *
 * @param specPath File system path to a YAML Kubernetes spec.
 * @return Array of resources created
 */
export async function apply(specPath: string): Promise<k8s.KubernetesObject[]> {
    const kc = new k8s.KubeConfig();
    kc.loadFromDefault();
    const client = k8s.KubernetesObjectApi.makeApiClient(kc);
    const fsReadFileP = promisify(fs.readFile);
    const specString = await fsReadFileP(specPath, 'utf8');
    const specs: k8s.KubernetesObject[] = yaml.safeLoadAll(specString);
    const validSpecs = specs.filter((s) => s && s.kind && s.metadata);
    const created: k8s.KubernetesObject[] = [];
    for (const spec of validSpecs) {
        // this is to convince the old version of TypeScript that metadata exists even though we already filtered specs
        // without metadata out
        spec.metadata = spec.metadata || {};
        spec.metadata.annotations = spec.metadata.annotations || {};
        delete spec.metadata.annotations['kubectl.kubernetes.io/last-applied-configuration'];
        spec.metadata.annotations['kubectl.kubernetes.io/last-applied-configuration'] = JSON.stringify(spec);
        try {
            // try to get the resource, if it does not exist an error will be thrown and we will end up in the catch
            // block.
            await client.read(spec);
            // we got the resource, so it exists, so patch it
            const response = await client.patch(spec);
            created.push(response.body);
        } catch (e) {
            // we did not get the resource, so it does not exist, so create it
            const response = await client.create(spec);
            created.push(response.body);
        }
    }
    return created;
}

我可以在 Kubernetes 中将 YAML 代码部署为没有 YAML 文件的文件吗

Can I deploy YAML code as file without YAML file in Kubernetes

yaml

node.js

kubernetes

kubectl