主機升級了ssh，grid安裝過程互信無法驗證通過，setup能正常安裝成功，手工測試也沒有問題，報錯如下：
主機信息
解決辦法
參考
[INS-06006] Passwordless SSH connectivity not set up between the following node(s): [crmdb1, crmdb2]主機信息
# cat /etc/redhat-release
CentOS Linux release 7.6.1810 (Core)
# ssh -V
OpenSSH_8.3p1, OpenSSL 1.1.1h 22 Sep 2020解決辦法
# Rename the original scp.
mv /usr/bin/scp /usr/bin/scp.orig
# Create a new file </usr/bin/scp>.
vi /usr/bin/scp
# Add the below line to the new created file </usr/bin/scp>.
/usr/bin/scp.orig -T $*
# Change the file permission.
chmod 555 /usr/bin/scp
安裝grid,完成以後修改回來：
# mv /usr/bin/scp.orig /usr/bin/scp參考
GI runInstaller Fails with INS-6006 in VNC During SSH test even though SSH Setup is successful (Doc ID 2070270.1)
INS-06006 GI RunInstaller Fails If OpenSSH Is Upgraded to 8.x (Doc ID 2555697.1)