# Miscellanous Notes on Server Hosting specifics

## LUKS container over sshfs

* enable user\_allow\_other in /etc/fuse.conf
* sshfs -o allow\_root user@server:/BACKUPS/ ~/mnt/
* dd if=/dev/urandom of=~/mnt/megaloman bs=1M count=512
* sudo cryptsetup -y luksFormat ~/mnt/megaloman
* sudo cryptsetup luksOpen ~/mnt/megaloman vol1
* sudo mkfs.ext4 /dev/mapper/vol1
* sudo mount /dev/mapper/vol1 /mnt
* df -h | grep vol1
* sudo umount /mnt
* sudo cryptsetup luksClose vol1
* fusermount -u ~/mnt

NOTE: backup your data example use : rsync -a –info=progress2 source dist

## Ownlcoud

### Mounting Ownclouds DavFS

    $ apt-get install davfs2

    * since owncloud seems to have problems with locks, edit /etc/davfs2/davfs2.conf and set use_locks to 0 in order to allow creating files (as well as probably writing)

    $ mount -t davfs https://secure.sf.com/owncloud/remote.php/webdav /mnt/

### rescan/rebuild ownlocud files database

    inside ownlcoud  directory run:
    sudo -u www-owncloud php console.php files:scan –all

## Postfix

We want to handle different domains on a single postfix server and have virtual users along real unix users.
For the virtual users we use uid/gid 5000.

Relevant config files are:

    /etc/postfix/master.cf
    /etc/postfix/main.cf
    /etc/postfix/smtpd_sender_login_maps (tells which emails belong to which login)
    /etc/postfix/vmailbox (sepcifies our VIRTUAL mailboxes and the names of the spoolfiles)
    /etc/postfix/virtual (aliases for our local unix users)
    /etc/dovecot/users (specifies the logins, passwords, home directories,..)
    /etc/dovecot/conf.d/10-mail (set inbox and mailbox dirs)

Be careful about the permissions of the different folders, so uid/gid 5000, postfix and dovecot can access as relevant.

A very nice tutorial on setting up postfixadmin can be found here: 

    https://lelutin.ca/posts/installing_postfix_-_clamav_-_spamassassin_-_dovecot_-_postfixadmin_on_debian_squeeze/