28、基础设施即代码（IaC）的重构与故障修复

基础设施即代码（IaC）的重构与故障修复

1. 拆解单体式IaC配置

在管理基础设施时，单体式的IaC配置可能带来诸多问题，例如移除一个资源可能导致整个配置失败。为了解决这些问题，我们需要对单体式IaC进行拆解和重构。

1.1 拆解前的检查

在开始拆解之前，我们可以使用Terraform来检查基础设施状态。以下是一段示例输出：

google_service_account.blue: Refreshing state...
google_compute_network.blue: Refreshing state...
google_compute_subnetwork.blue: Refreshing state...
google_container_cluster.blue: Refreshing state...
google_container_node_pool.blue: Refreshing state…
No changes. Your infrastructure matches the configuration.
Terraform has compared your real infrastructure against your configuration 
➥and found no differences, so no changes are needed.
Apply complete! Resources: 0 added, 0 changed, 0 destroyed.

如果在预运行（dry run）中包含了已重构