From 06c37f84b943bf10ab5461643f7c799223f0ac0a Mon Sep 17 00:00:00 2001 From: waldek Date: Tue, 13 Jul 2021 15:33:04 +0200 Subject: [PATCH] adds sshfs --- modules/qualifying/learning_ssh.md | 50 +++++++++++++++++++++++++++--- 1 file changed, 46 insertions(+), 4 deletions(-) diff --git a/modules/qualifying/learning_ssh.md b/modules/qualifying/learning_ssh.md index b88b802..4804ce8 100644 --- a/modules/qualifying/learning_ssh.md +++ b/modules/qualifying/learning_ssh.md @@ -319,6 +319,52 @@ Last login: Tue Jul 13 14:12:18 2021 from 172.30.40.99 ➜ ~ ``` +## SFTP + +We've done quite a bit of SFTP before so we won't go into detail here but if you forgot, go have a look at the networking exercises in the resources directory. +I'm mentioning it because it's crucial to remember it's existence in order to understand the next topic, sshfs. + +## SSHFS + +Thanks to the sftp subsystem of ssh we can use it to copy files form one system to an other. +Some clever guy's used it to build [sshfs]() which mounts a remote folder into our system so we can use it like a network share. +It's a poor mans NFS that can be a true lifesaver. +You'll have to install it onto the client where you want to mount the folder to. +This can be done as follows, `sudo apt install sshfs`. +The server just needs a running sshd process with the internal-sftp subsystem configured but most, if not all, default ssh servers have this. + +``` +➜ ~ git:(master) ✗ ls media/sshfs +➜ ~ git:(master) ✗ sshfs waldek@172.30.4.19:/home/waldek media/sshfs +➜ ~ git:(master) ✗ ls media/sshfs +basement_session_1 broken_machines downloads go ipdb mbox sources test.sh +bigone.ovpn configuration gitea.service homeserver.yaml linux64.out media test.py +➜ ~ git:(master) ✗ df -h +Filesystem Size Used Avail Use% Mounted on +udev 5.8G 0 5.8G 0% /dev +tmpfs 1.2G 40M 1.2G 4% /run +/dev/mapper/helloworld--vg-root 226G 165G 50G 77% / +tmpfs 5.9G 87M 5.8G 2% /dev/shm +tmpfs 5.0M 4.0K 5.0M 1% /run/lock +tmpfs 5.9G 0 5.9G 0% /sys/fs/cgroup +/dev/sda1 236M 129M 95M 58% /boot +tmpfs 1.2G 0 1.2G 0% /run/user/998 +tmpfs 1.2G 24K 1.2G 1% /run/user/1000 +waldek@172.30.4.19:/home/waldek 219G 99G 109G 48% /home/waldek/media/sshfs +➜ ~ git:(master) ✗ +``` + +Once you're done with the share you can unmount it as follows. + +``` +➜ ~ git:(master) ✗ ls media/sshfs +basement_session_1 broken_machines downloads go ipdb mbox sources test.sh +bigone.ovpn configuration gitea.service homeserver.yaml linux64.out media test.py +➜ ~ git:(master) ✗ sudo umount media/sshfs +➜ ~ git:(master) ✗ ls media/sshfs +➜ ~ git:(master) ✗ +``` + ## Tweaking the sshd configuration file All server configuration is done in the `/etc/ssh/sshd_config` file. @@ -348,11 +394,7 @@ Protocol ## Tunnels -## SFTP - ## Autossh -## SSHFS - ## SSHuttle