SSHFS mounting without password with SSH keys

First we need to generate public and private keys on our host.
When prompted for passphrase just hit enter to go without it

nevillegroup@shell:~$ ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/home/nevillegroup/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/nevillegroup/.ssh/id_rsa.
Your public key has been saved in /home/nevillegroup/.ssh/id_rsa.pub.

We need to add our public key into authorized_keys file and upload it to the remote host into the .ssh directory.

nevillegroup@shell:~$ cat .ssh/id_rsa.pub > authorized_keys

Now we can create a bash script for mounting the remote directory

!/bin/bash

USERID="YOUR_UID"
USER="example"
HOST="example.com"
MOUNT_DIR="/home/example/examplecom_sshfs"

# create dir if it doesn't exists
if [ ! -d "$MOUNT_DIR" ]; then
    umount $MOUNT_DIR &> /dev/null
    mkdir $MOUNT_DIR
fi

# to check your uid use command `id`
sshfs -C -o uid=$USERID,ssh_command='ssh -i ~/.ssh/id_rsa',workaround=rename $USER@$HOST:. $MOUNT_DIR

Add executable flag to the file and you ready to mount with the script

nevillegroup@shell:~$ chmod +x bin/sshfs_examplecom
nevillegroup@shell:~$ ./bin/sshfs_examplecom
nevillegroup@shell:~$ ls /home/example/examplecom_sshfs
dev/  git/  logs/  sub/  web/

Backup with RSYNC and SSH authorized key

Finally I wrote my rsync backup script v. 0.1
https://raw.github.com/mikaelz/bin/master/backup.sh

#!/bin/sh

# ~/bin/backup.sh
# 
# Some help from
# http://www.sakana.fr/blog/2008/05/07/securing-automated-rsync-over-ssh/
# https://wiki.archlinux.org/index.php/Rsync#Automated_backup_with_SSH
# https://wiki.archlinux.org/index.php/Full_System_Backup_with_rsync
# https://www.linux.com/news/enterprise/storage/8200-back-up-like-an-expert-with-rsync
# Thanks

# man rsync
# -v be verbose
# -h human readable bytes
# -a, --archive archive mode; same as -rlptgoD (no -H) -H hard-links
# -z compress data during transfer
# --progress show file transfer progress
# -e remote shell to use

time rsync -vhaz --progress -e "ssh -i .ssh/id_rsa" \
    --exclude ".DS_Store" \
    --exclude "._.DS_Store" \
    --exclude "Thumbs.db" \
    --exclude "thumbs.db" \
    --exclude "desktop.ini" \
    --exclude ".svn" \
    --exclude ".git" \
    /Volumes/data/Dropbox/ \
    nevillegroup@shell.websupport.sk:/home/nevillegroup/optimalizaciaseosk/backup/Dropbox/
    # >> backup.log # log output
    # &> /dev/null


# needs FTP password
# time rsync -vhaz --progress -e ssh \
#     --exclude ".DS_Store" \
#     --exclude "._.DS_Store" \
#     --exclude "Thumbs.db" \
#     --exclude "thumbs.db" \
#     --exclude "desktop.ini" \
#     --exclude ".svn" \
#     --exclude ".git" \
#     /Volumes/data/Dropbox/ \
#     optimalizaciaseo.sk@optimalizaciaseo.sk:/backup/Dropbox/
#     # >> backup.log # log output
#     # &> /dev/null