ubuntu ldap authentication

Start Apache service unexpectedly prompt permission is not enough, with SU switch, enter password hint authentication failed, this is done, and then once the original Ubuntu installed, root user is locked, not allowed to log in, and do not allow Su to root, For desktop users this may be to enhance security, but the server version of this is not true, and quickly set it down.Under Terminal[email protected]:

are appended to the Authorized_keys file, so masternode authorized_keys files contain the public key of all nodes:cat ~/.ssh/temp1 >> ~/.ssh/authorized_keyscat ~/.ssh/temp2 >> ~/.ssh/authorized_keysRM ~/.ssh/temp1RM ~/.ssh/temp2Distribute the merged Authorized_keys files to each node in the Masternode:SCP ~/.ssh/authorized_keys slavenode1:~/.ssh/SCP ~/.ssh/authorized_keys slavenode2:~/.ssh/Fourth Step: All system configuration/etc/ssh/sshd_config file, make the system use public key

1. Restart the system, and hold down the SHIFT key to enter the Grub menu;2. Select the recovery mode recovery model;3. In recovery menu, select root drop to root shell prompt;4. Enter the passwd user name in the command line;If the successful appears to indicate the success of the modification;If it appears:Describes no permission changes.Workaround at this time:Re-mount the root/read-write mode, enter Mount-o rw,remount/Change the password again to succeed.About Mount-o Rw,remount/It is import