OpenShift 4 之登录进 CodeReady Container 的 CoreOS

OpenShift 4 开始master节点使用CoreOS作为其底层操作系统。CoreOS安装管理都是自动进行的，红帽不建议用户直接管理。不过可通过以下方法登录到CoreOS节点。

1. 获得运行CRC的虚拟机IP

$ crc ip
192.168.130.11

2. 用证书登录CoreOS

$ ssh -i ~/.crc/machines/crc/id_rsa [email protected]
Red Hat Enterprise Linux CoreOS 42.81.20191119.1
WARNING: Direct SSH access to machines is not recommended.
---
[systemd]
Failed Units: 1
  [email protected]

3. 切换到root用户

[core@crc-2n9vw-master-0 ~]$ whoami
core

[core@crc-2n9vw-master-0 ~]$ sudo -i
[systemd]
Failed Units: 1
  [email protected]

[root@crc-2n9vw-master-0 ~] whoami
root