Black Box LES1516A, Руководство пользователя

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CHAPTER 16: ADVANCED CONFIGURATION
To load this default:
# /etc/scripts/backup-usb load-default
To load any other config file:
# /etc/scripts/backup-usb load {filename}
The /etc/scripts/backup-usb script can be executed directly with various commands or called from other custom scripts you may
create. However it is recommended that you do not customize the /etc/scripts/backup-usb script itself.
16.1.9 BACKING-UP THE CONFIGURATION OFF-BOX
If you do not have a USB port on your console server, you can back up the configuration to an off-box file. Before backing up, you need
to arrange a way to transfer the backup off-box. This could be via an NFS share, a Samba (Windows) share to USB storage or copied
off-box via the network. If backing up directly to off-box storage, make sure it is mounted.
/tmp is not a good location for the backup except as a temporary location before transferring it off-box. The /tmp directory will not
survive a reboot. The /etc/config directory is not a good place either: it will not survive a restore.
Backup and restore should be done by the root user to ensure correct file permissions are set. The config command is used to create
a backup tarball:
# config -e <Output File>
The tarball will be saved to the indicated location. It will contain the contents of the /etc/config/ directory in an uncompressed and
unencrypted form.
Example nfs storage:
# mount -t nfs 192.168.0.2:/backups /mnt # config -e /mnt/ \
les1716a.config
# umount/mnt/
Example transfer off-box via scp:
# config -e /tmp/cm7116.config
# scp /tmp/cm7116.config username@192.168.0.2:/backups
The config command is also used to restore a backup:
# config -i <Input File>
This will extract the contents of the previously created backup to /tmp, and then synchronize the /etc/config directory with the copy
in /tmp.
One problem that can crop up here is that there is not enough room in /tmp to extract files to. The following command will
temporarily increase the size of /tmp:
# mount -t tmpfs -o remount,size=2048k tmpfs /var
If restoring to either a new unit or one that has been factory defaulted, it is important to make sure that the process generating SSH
keys is either stopped or completed before restoring configuration. If this is not done, then a mix of old and new keys may be put in
place.
SSH uses these keys to avoid man-in-the-middle attacks, logging in may be disrupted.