12. Frequently Asked Questions¶
I get this error when accessing via SSH my virtual machine:
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ 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 the RSA host key has just been changed. The fingerprint for the RSA key sent by the remote host is c8:1b:1d:37:61:ee:9f:e4:db:5b:31:91:35:7b:d2:59. Please contact your system administrator. Add correct host key in /home/user/.ssh/known_hosts to get rid of this message. Offending key in /home/user/.ssh/known_hosts:3 RSA host key for 10.64.51.7 has changed and you have requested strict checking. Host key verification failed.
SOLUTION: the IP of your VM has probably been reused. You need to delete the offending entry on your /home/user/.ssh/known_hosts file. For example you can use:
sed -i '/^10.64.51.7 ssh/d' .ssh/known_hosts
and try again to connect.
I can’t see anymore my data after a reboot of my instance
SOLUTION: Are the data on an volume ? Did you remember to mount this volume ? Please also see this section.
I am using a flavor which has a supplementary ephemeral disk, but I not able to change ownership / mode of a directory
SOLUTION: A ‘fat’ file system is used for the supplementary ephemeral disk. We suggest to reformat this file system as described in Flavors with supplementary ephemeral disk.