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Troubleshooting Oracle Linux Instances

If you have issues with Oracle Linux instances on Oracle Cloud Infrastructure, review troubleshooting, diagnostics, and monitoring information:

  • SSH Connections Troubleshooting
  • Login Troubleshooting
  • Permissions Troubleshooting
  • Unbreakable Enterprise Kernel Troubleshooting
  • Collecting Crash Dumps Using Kdump
  • Collecting System and Debug Information Using sos
  • Enabling the Oracle Linux 7 Extended Support Repository

See also: Known Issues for Oracle Linux Instances.

SSH Connections Troubleshooting

If you're unable to connect to an Oracle Linux instance on Oracle Cloud Infrastructure using SSH, review the following information.

  • SSH Login Denied Using PuTTYgen Key Files: "Permission denied (publickey,gssapi-keyex,gssapi-with-mic)"
  • SSH Fails with Error: "Authentication Refused: Bad Ownership Or Modes For Directory "
  • SSH Error: connect to host w.x.y.z port 22: Operation timed out
  • SSH: Connect to host w.x.y.z port 22: Connection refused
  • <user-name>@w.x.y.z: Permission denied (publickey,gssapi-keyex,gssapi-with-mic)

For more help, see Troubleshooting the SSH Connection.

  • Troubleshooting Oracle Linux Instances
  • SSH Connections Troubleshooting
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