红帽全球峰会2.6. 为远程服务器访问创建自定义 live RHCOS ISO
在某些情况下，您无法将外部磁盘驱动器附加到服务器，但您需要远程访问服务器来调配节点。建议您启用对服务器的 SSH 访问。您可以创建一个启用了 SSHd 并预定义的凭证的 live RHCOS ISO，以便您可以在服务器引导后访问服务器。
先决条件
-
已安装
butane工具。
流程
-
从
coreos-installerimage mirror 页面下载coreos-installer二进制文件。 - 从 mirror.openshift.com 下载最新的 live RHCOS ISO。
创建
butane实用程序用来创建 Ignition 文件的embedded.yaml文件：variant: openshift version: 4.16.0 metadata: name: sshd labels: machineconfiguration.openshift.io/role: worker passwd: users: - name: core1 ssh_authorized_keys: - '<ssh_key>'- 1
core用户具有 sudo 权限。
运行以下命令，运行
butane工具来创建 Ignition 文件：$ butane -pr embedded.yaml -o embedded.ign创建 Ignition 文件后，您可以使用
coreos-installer工具将配置包含在新的 live RHCOS ISO 中，名为rhcos-sshd-4.16.0-x86_64-live.x86_64.iso：$ coreos-installer iso ignition embed -i embedded.ign rhcos-4.16.0-x86_64-live.x86_64.iso -o rhcos-sshd-4.16.0-x86_64-live.x86_64.iso
验证
运行以下命令，检查自定义 live ISO 是否可用于引导服务器：
# coreos-installer iso ignition show rhcos-sshd-4.16.0-x86_64-live.x86_64.iso输出示例
{ "ignition": { "version": "3.2.0" }, "passwd": { "users": [ { "name": "core", "sshAuthorizedKeys": [ "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCZnG8AIzlDAhpyENpK2qKiTT8EbRWOrz7NXjRzopbPu215mocaJgjjwJjh1cYhgPhpAp6M/ttTk7I4OI7g4588Apx4bwJep6oWTU35LkY8ZxkGVPAJL8kVlTdKQviDv3XX12l4QfnDom4tm4gVbRH0gNT1wzhnLP+LKYm2Ohr9D7p9NBnAdro6k++XWgkDeijLRUTwdEyWunIdW1f8G0Mg8Y1Xzr13BUo3+8aey7HLKJMDtobkz/C8ESYA/f7HJc5FxF0XbapWWovSSDJrr9OmlL9f4TfE+cQk3s+eoKiz2bgNPRgEEwihVbGsCN4grA+RzLCAOpec+2dTJrQvFqsD alosadag@sonnelicht.local" ] } ] } }
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