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What Should I Do If I Cannot Switch to an ECS or HANA ECS Using SSH?
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What Should I Do If I Cannot Switch to an ECS or HANA ECS Using SSH?
Symptom
When I switched from a Linux ECS/HANA ECS to another Linux ECS/HANA ECS using SSH, the system displayed a message indicating the switching failed.
The message is as follows:
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! Someone could be eavesdropping on you right now (man-in-the-middle attack)! It is also possible that a host key has just been changed. The fingerprint for the RSA key sent by the remote host is 2c:d0:17:8a:82:4c:23:d6:14:be:d0:1d:88:8b:8b:03 [MD5]. Please contact your system administrator. Add correct host key in /root/.ssh/known_hosts to get rid of this message. Offending ECDSA key in /root/.ssh/known_hosts:1 You can use following command to remove all keys for this IP: ssh-keygen -R fanhana-0002 -f /root/.ssh/known_hosts RSA host key for fanhana-0002 has changed and you have requested strict checking. Host key verification failed.
Possible Causes
- OpenSSH has been reinstalled on the target ECS/HANA ECS.
- The node IP address or name has been changed.
- Other issues have occurred.
Handling Method
Delete the known_hosts file on the local end to resolve this issue. To do so, perform the following operations:
- On the local ECS/HANA ECS, switch to the CLI as user root.
- Run the following command to delete the known_hosts file:
rm /root/.ssh/known_hosts
NOTE:
After the file deletion, when you attempt to switch to the target ECS/HANA ECS using SSH, the system displays the fingerprint as well as the message "Are you sure you want to continue connecting (yes/no)?". In such a case, enter yes and continue the switching.
Parent topic: FAQs
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