As we discussed in Part 1, CNI plugins play an essential role in Kubernetes networking. There are many third-party CNI plugins available today; Calico is one of them. Many engineers prefer Calico; one of the main reasons is its ease of use and how it shapes the network fabric.
GNU parallel 是一个 shell 工具,用于使用一台或多台计算机并行执行作业。作业可以是单个命令或必须为输入中的每一行运行的小脚本。典型的输入是文件列表、主机列表、用户列表、URL 列表或表列表。作业也可以是从管道读取的命令。 GNU parallel 然后可以拆分输入并将其通过管道并行传输到命令中。