通过快照创建夜间 Google Cloud VM

Question

我创建了一个 Google Cloud Compute Engine，并每晚对其进行备份（快照）。我在同一个项目中有第二个 VM，它是第一个 VM 的克隆。每次都可以使用第一个 VM 的刚创建的新快照更新第二个 VM 实例吗？所以我有一个故障回复服务器，它最多有 24 小时的历史？

Answer 1

您很可能需要从快照创建一个新实例，验证新实例是否健康，然后删除第二个 VM 实例。gcloud sdk 有一个标志 -

gcloud compute instances create和--source-snapshot=SNAPSHOT旗帜。

我不确定你的情况，但似乎新发布的GCP 机器映像可能是一个不错的选择。它提供了磁盘快照所不具备的功能，例如多磁盘备份、实例克隆和复制。您可以从机器创建实例所有实例属性、配置和数据均完整的图像。

Answer 2

如果有人遇到同样的问题，我编写了一个云函数并每天安排它。步骤如下：

1. 获取最新快照
2. 删除旧虚拟机
3. 创建新虚拟机
4. 将新创建的 VM IP 放入 Cloudflare LoadBalancer

这是它的代码：

    const Compute = require("@google-cloud/compute");
    const axios = require("axios");

    const compute = new Compute({
      projectId: "myProjectID",
      keyFilename: "./gcloud_key.json"
    });

    exports.updateFailOverVM = async (pubSubEvent, context) => {
      try {
        const snapshots = await compute.getSnapshots({
          orderBy: "creationTimestamp desc"
        });
        const snapshot = snapshots[0][0];
        console.log(`Going to use Snapshot: ${snapshot.name}`);
        const sourceSnapshot = `https://www.googleapis.com/compute/v1/projects/myProjectID/global/snapshots/${snapshot.name}`;

        const zone = compute.zone("MySelectedZone");
        const vm = zone.vm("MyVMName");

        // Delete old FailOver
        console.log("start deleting old VM");
        const [deleteOperation] = await vm.delete();

        deleteOperation.on("complete", async function(metadata) {
          console.log("finished deleting old VM");

          // Create new VM
          console.log("start creating new VM");
          const [newVM, createOperation] = await vm.create({
            http: false,
            https: true,
            machineType: "n1-standard-1",
            disks: [
              {
                initializeParams: {
                  sourceSnapshot
                },
                sizeGb: 50,
                type:
                  "projects/MyProjectID/zones/mySelectedZone/diskTypes/pd-standard",
                boot: true
              }
            ]
          });
          createOperation.on("complete", async function(metadata) {
            const [newVMMeta] = await vm.getMetadata();
            const newIP = newVMMeta.networkInterfaces[0].accessConfigs[0].natIP;
            console.log("finished creating new VM");

            // Route Cloudflare to new IP
            console.log("Put new IP to Cloudflare");
            await axios({
              method: "patch",
              url:
                "https://api.cloudflare.com/client/v4/user/load_balancers/pools/MyPoolID",
              data: {
                origins: [
                  {
                    name: "MyPoolName",
                    address: newIP,
                    enabled: true,
                    weight: 1
                  }
                ]
              },
              headers: {
                "X-Auth-Email": "MyCloudflareEmail",
                "X-Auth-Key": "MyCloudflareAuthKey"
              }
            });
            console.log("Finished putting IP to Cloudflare");
          });
        });
      } catch (err) {
        console.error(err);
      }
    };