Difference between revisions of "OPS345 Lab 6"
| Line 4: | Line 4: | ||
* add an iptables rule on router to forward port 2212 to email:22, don't forget to edit ops345sg | * add an iptables rule on router to forward port 2212 to email:22, don't forget to edit ops345sg | ||
* email_public_ip | * email_public_ip | ||
| + | * same instructions as for vg_www-lv_www but vg_email-lv_email, mounted on /home | ||
| + | * but also mount it on /tmp/home, and move everything from /home to /tmp/home before rebooting | ||
| + | ** can lose access to ssh key if don't do it right - see what happens if mount on /home without | ||
| + | <source>[root@email ~]# vi /etc/fstab | ||
| + | [root@email ~]# mount /home/ | ||
| + | [root@email ~]# ls /home/ | ||
| + | lost+found | ||
| + | # try to ssh now, it won't work | ||
| + | [root@email ~]# umount /home/ | ||
| + | [root@email ~]# mkdir /tmp/home | ||
| + | [root@email ~]# mount /dev/mapper/vg_email-lv_email /tmp/home/ | ||
| + | [root@email ~]# cd /home/ | ||
| + | [root@email home]# ls -a | ||
| + | . .. andrew | ||
| + | [root@email home]# mv andrew/ /tmp/home/ | ||
| + | [root@email home]# cd / | ||
| + | [root@email /]# ls /home/ | ||
| + | [root@email /]# ls /tmp/home/ | ||
| + | andrew lost+found | ||
| + | [root@email /]# umount /tmp/home/ | ||
| + | [root@email /]# ls /tmp/home/ | ||
| + | [root@email /]# ls /home/ | ||
| + | [root@email /]# mount /home/ | ||
| + | [root@email /]# ls -a /home/andrew/ | ||
| + | . .. .bash_history .bash_logout .bash_profile .bashrc .ssh | ||
| + | [root@email /]# reboot # and confirm can still log in. if not - have to rebuild email vm | ||
| + | </source> | ||
Revision as of 01:12, 26 November 2021
- Email overview
- Create a new VM named 'email' in vpc-ops345, 10.3.45.12, with an extra 4GB EBS volume, ops345sgemail, email.asmith15.ops345.ca
- ssh only from ops345sgprivate
- add an iptables rule on router to forward port 2212 to email:22, don't forget to edit ops345sg
- email_public_ip
- same instructions as for vg_www-lv_www but vg_email-lv_email, mounted on /home
- but also mount it on /tmp/home, and move everything from /home to /tmp/home before rebooting
- can lose access to ssh key if don't do it right - see what happens if mount on /home without
[root@email ~]# vi /etc/fstab
[root@email ~]# mount /home/
[root@email ~]# ls /home/
lost+found
# try to ssh now, it won't work
[root@email ~]# umount /home/
[root@email ~]# mkdir /tmp/home
[root@email ~]# mount /dev/mapper/vg_email-lv_email /tmp/home/
[root@email ~]# cd /home/
[root@email home]# ls -a
. .. andrew
[root@email home]# mv andrew/ /tmp/home/
[root@email home]# cd /
[root@email /]# ls /home/
[root@email /]# ls /tmp/home/
andrew lost+found
[root@email /]# umount /tmp/home/
[root@email /]# ls /tmp/home/
[root@email /]# ls /home/
[root@email /]# mount /home/
[root@email /]# ls -a /home/andrew/
. .. .bash_history .bash_logout .bash_profile .bashrc .ssh
[root@email /]# reboot # and confirm can still log in. if not - have to rebuild email vm