Can not start installation in China

[jospoh]

[root@iZbp1eix22exovznsp626kZ ~]# curl -sfL https://rancher-mirror.oss-cn-beijing.aliyuncs.com/rke2/install.sh | INSTALL_RKE2_MIRROR=cn sh -
[INFO] finding release for channel stable
[INFO] using 1.28 series from channel stable
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile

• base: mirrors.cloud.aliyuncs.com
• epel: mirrors.ustc.edu.cn
• extras: mirrors.cloud.aliyuncs.com
• updates: mirrors.cloud.aliyuncs.com
  https://rpm.rancher.io/rke2/stable/1.28/centos/7/x86_64/repodata/repomd.xml: [Errno 12] Timeout on https ://rpm.rancher.io/rke2/stable/1.28/centos/7/x86_64/repodata/repomd.xml: (28, 'Operation timed out after 30001 milliseconds with 0 out of 0 bytes received')
  Trying other mirror.
  https://rpm.rancher.io/rke2/stable/1.28/centos/7/x86_64/repodata/repomd.xml: [Errno 12] Timeout on https ://rpm.rancher.io/rke2/stable/1.28/centos/7/x86_64/repodata/repomd.xml: (28, 'Operation timed out after 30001 milliseconds with 0 out of 0 bytes received')
  Trying other mirror.
  https://rpm.rancher.io/rke2/stable/1.28/centos/7/x86_64/repodata/repomd.xml: [Errno 12] Timeout on https ://rpm.rancher.io/rke2/stable/1.28/centos/7/x86_64/repodata/repomd.xml: (28, 'Operation timed out after 30001 milliseconds with 0 out of 0 bytes received')
  Trying other mirror.
  rancher-rke2-1.28-stable | 2.9 kB 00:00:00
  rancher-rke2-common-stable | 2.9 kB 00:00:00
  rancher-rke2-1.28-stable/prima FAILED

[jospoh]

All right,it's the network stuff...