SSH Permissions xxxx for 'xxxx' are too open.

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Permissions 0664 for 'tools/cncl' are too open.
It is required that your private key files are NOT accessible by others.
This private key will be ignored.
bad permissions: ignore key: tools/cncl
Permission denied (publickey).
lost connection
           

chmod 600 tools/cncl           

需要给证书 600权限