ubuntu@ganso-bastion:~$ ssh 10.5.0.53
Warning: Permanently added '10.5.0.53' (ECDSA) to the list of known hosts.
Welcome to Ubuntu 20.04 LTS (GNU/Linux 5.4.0-37-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

  System information as of Tue Jun 16 15:49:53 UTC 2020

  System load:  0.0               Processes:             112
  Usage of /:   3.1% of 38.60GB   Users logged in:       0
  Memory usage: 4%                IPv4 address for ens3: 10.5.0.53
  Swap usage:   0%

0 updates can be installed immediately.
0 of these updates are security updates.



The programs included with the Ubuntu system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by
applicable law.

To run a command as administrator (user "root"), use "sudo <command>".
See "man sudo_root" for details.

ubuntu@focal2:~$ sudo apt-get install open-iscsi
Reading package lists... Done
Building dependency tree       
Reading state information... Done
open-iscsi is already the newest version (2.0.874-7.1ubuntu6.1).
open-iscsi set to manually installed.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
ubuntu@focal2:~$ iscsiadm -m discovery -t st -p 10.5.0.41
iscsiadm: Maybe you are not root?
iscsiadm: Could not lock discovery DB: /run/lock/iscsi/lock.write: Permission denied
iscsiadm: Maybe you are not root?
iscsiadm: Could not lock discovery DB: /run/lock/iscsi/lock.write: Permission denied
iscsiadm: Could not add new discovery record.
ubuntu@focal2:~$ sudo iscsiadm -m discovery -t st -p 10.5.0.41
10.5.0.41:3260,1 iqn.2018-02.ganso.com:lun1
ubuntu@focal2:~$ sudo -s
root@focal2:/home/ubuntu# vi /etc/iscsi/nodes/iqn.2018-02.ganso.com\:lun1/10.5.0.41\,3260\,1/default 
root@focal2:/home/ubuntu# systemctl restart open-iscsi
root@focal2:/home/ubuntu# lsblk
NAME    MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
loop0     7:0    0 30.3M  1 loop /snap/snapd/7777
loop1     7:1    0   55M  1 loop /snap/core18/1754
loop2     7:2    0 69.3M  1 loop /snap/lxd/15457
sda       8:0    0 1020M  0 disk 
vda     252:0    0   40G  0 disk 
├─vda1  252:1    0 39.9G  0 part /
├─vda14 252:14   0    4M  0 part 
└─vda15 252:15   0  106M  0 part /boot/efi
root@focal2:/home/ubuntu# sudo reboot
Connection to 10.5.0.53 closed by remote host.
Connection to 10.5.0.53 closed.
ubuntu@ganso-bastion:~$ ssh 10.5.0.53
Warning: Permanently added '10.5.0.53' (ECDSA) to the list of known hosts.
Welcome to Ubuntu 20.04 LTS (GNU/Linux 5.4.0-37-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

  System information as of Tue Jun 16 15:55:52 UTC 2020

  System load:  0.02              Processes:             124
  Usage of /:   3.1% of 38.60GB   Users logged in:       0
  Memory usage: 4%                IPv4 address for ens3: 10.5.0.53
  Swap usage:   0%


0 updates can be installed immediately.
0 of these updates are security updates.


Last login: Tue Jun 16 15:49:54 2020 from 10.5.0.13
ubuntu@focal2:~$ lsblk
NAME    MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
loop0     7:0    0   55M  1 loop /snap/core18/1754
loop1     7:1    0 69.3M  1 loop /snap/lxd/15457
loop2     7:2    0 30.3M  1 loop /snap/snapd/7777
sda       8:0    0 1020M  0 disk 
vda     252:0    0   40G  0 disk 
├─vda1  252:1    0 39.9G  0 part /
├─vda14 252:14   0    4M  0 part 
└─vda15 252:15   0  106M  0 part /boot/efi
ubuntu@focal2:~$ dmesg
[    0.000000] Linux version 5.4.0-37-generic (buildd@lcy01-amd64-001) (gcc version 9.3.0 (Ubuntu 9.3.0-10ubuntu2)) #41-Ubuntu SMP Wed Jun 3 18:57:02 UTC 2020 (Ubuntu 5.4.0-37.41-generic 5.4.41)
[    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-5.4.0-37-generic root=PARTUUID=807c9158-e442-4cfd-aa48-46c3b7d5c64b ro console=tty1 console=ttyS0
<REDACTED>
[   11.536651] Loading iSCSI transport class v2.0-870.
[   11.608242] iscsi: registered transport (tcp)
[   12.616110] scsi host2: iSCSI Initiator over TCP/IP
[   12.633202] scsi 2:0:0:0: RAID              IET      Controller       0001 PQ: 0 ANSI: 5
[   12.634638] scsi 2:0:0:0: Attached scsi generic sg0 type 12
[   12.641374] scsi 2:0:0:1: Direct-Access     IET      VIRTUAL-DISK     0001 PQ: 0 ANSI: 5
[   12.643057] sd 2:0:0:1: Attached scsi generic sg1 type 0
[   12.643298] sd 2:0:0:1: Power-on or device reset occurred
[   12.661381] sd 2:0:0:1: [sda] 2088960 512-byte logical blocks: (1.07 GB/1020 MiB)
[   12.670605] sd 2:0:0:1: [sda] Write Protect is off
[   12.670608] sd 2:0:0:1: [sda] Mode Sense: 69 00 10 08
[   12.672140] sd 2:0:0:1: [sda] Write cache: enabled, read cache: enabled, supports DPO and FUA
[   12.733272] sd 2:0:0:1: [sda] Attached SCSI disk
[   79.709424] random: crng init done
[   79.709432] random: 7 urandom warning(s) missed due to ratelimiting
ubuntu@focal2:~$ sudo mkdir /data
ubuntu@focal2:~$ sudo apt install nfs-kernel-server
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  keyutils libnfsidmap2 libtirpc-common libtirpc3 nfs-common rpcbind
Suggested packages:
  watchdog
The following NEW packages will be installed:
  keyutils libnfsidmap2 libtirpc-common libtirpc3 nfs-common nfs-kernel-server rpcbind
0 upgraded, 7 newly installed, 0 to remove and 0 not upgraded.
Need to get 500 kB of archives.
After this operation, 1887 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://nova.clouds.archive.ubuntu.com/ubuntu focal/main amd64 libtirpc-common all 1.2.5-1 [7632 B]
Get:2 http://nova.clouds.archive.ubuntu.com/ubuntu focal/main amd64 libtirpc3 amd64 1.2.5-1 [77.2 kB]
Get:3 http://nova.clouds.archive.ubuntu.com/ubuntu focal/main amd64 rpcbind amd64 1.2.5-8 [42.8 kB]
Get:4 http://nova.clouds.archive.ubuntu.com/ubuntu focal/main amd64 keyutils amd64 1.6-6ubuntu1 [45.0 kB]
Get:5 http://nova.clouds.archive.ubuntu.com/ubuntu focal/main amd64 libnfsidmap2 amd64 0.25-5.1ubuntu1 [27.9 kB]
Get:6 http://nova.clouds.archive.ubuntu.com/ubuntu focal/main amd64 nfs-common amd64 1:1.3.4-2.5ubuntu3 [205 kB]
Get:7 http://nova.clouds.archive.ubuntu.com/ubuntu focal/main amd64 nfs-kernel-server amd64 1:1.3.4-2.5ubuntu3 [94.8 kB]
Fetched 500 kB in 1s (553 kB/s)           
Selecting previously unselected package libtirpc-common.
(Reading database ... 63093 files and directories currently installed.)
Preparing to unpack .../0-libtirpc-common_1.2.5-1_all.deb ...
Unpacking libtirpc-common (1.2.5-1) ...
Selecting previously unselected package libtirpc3:amd64.
Preparing to unpack .../1-libtirpc3_1.2.5-1_amd64.deb ...
Unpacking libtirpc3:amd64 (1.2.5-1) ...
Selecting previously unselected package rpcbind.
Preparing to unpack .../2-rpcbind_1.2.5-8_amd64.deb ...
Unpacking rpcbind (1.2.5-8) ...
Selecting previously unselected package keyutils.
Preparing to unpack .../3-keyutils_1.6-6ubuntu1_amd64.deb ...
Unpacking keyutils (1.6-6ubuntu1) ...
Selecting previously unselected package libnfsidmap2:amd64.
Preparing to unpack .../4-libnfsidmap2_0.25-5.1ubuntu1_amd64.deb ...
Unpacking libnfsidmap2:amd64 (0.25-5.1ubuntu1) ...
Selecting previously unselected package nfs-common.
Preparing to unpack .../5-nfs-common_1%3a1.3.4-2.5ubuntu3_amd64.deb ...
Unpacking nfs-common (1:1.3.4-2.5ubuntu3) ...
Selecting previously unselected package nfs-kernel-server.
Preparing to unpack .../6-nfs-kernel-server_1%3a1.3.4-2.5ubuntu3_amd64.deb ...
Unpacking nfs-kernel-server (1:1.3.4-2.5ubuntu3) ...
Setting up libtirpc-common (1.2.5-1) ...
Setting up keyutils (1.6-6ubuntu1) ...
Setting up libnfsidmap2:amd64 (0.25-5.1ubuntu1) ...
Setting up libtirpc3:amd64 (1.2.5-1) ...
Setting up rpcbind (1.2.5-8) ...
Created symlink /etc/systemd/system/multi-user.target.wants/rpcbind.service → /lib/systemd/system/rpcbind.service.
Created symlink /etc/systemd/system/sockets.target.wants/rpcbind.socket → /lib/systemd/system/rpcbind.socket.
Setting up nfs-common (1:1.3.4-2.5ubuntu3) ...

Creating config file /etc/idmapd.conf with new version
Adding system user `statd' (UID 113) ...
Adding new user `statd' (UID 113) with group `nogroup' ...
Not creating home directory `/var/lib/nfs'.
Created symlink /etc/systemd/system/multi-user.target.wants/nfs-client.target → /lib/systemd/system/nfs-client.target.
Created symlink /etc/systemd/system/remote-fs.target.wants/nfs-client.target → /lib/systemd/system/nfs-client.target.
nfs-utils.service is a disabled or a static unit, not starting it.
Setting up nfs-kernel-server (1:1.3.4-2.5ubuntu3) ...
Created symlink /etc/systemd/system/multi-user.target.wants/nfs-server.service → /lib/systemd/system/nfs-server.service.
Job for nfs-server.service canceled.

Creating config file /etc/exports with new version

Creating config file /etc/default/nfs-kernel-server with new version
Processing triggers for systemd (245.4-4ubuntu3.1) ...
Processing triggers for man-db (2.9.1-1) ...
Processing triggers for libc-bin (2.31-0ubuntu9) ...
ubuntu@focal2:~$ sudo mkfs.xfs /dev/sda
meta-data=/dev/sda               isize=512    agcount=4, agsize=65280 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=1, sparse=1, rmapbt=0
         =                       reflink=1
data     =                       bsize=4096   blocks=261120, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0, ftype=1
log      =internal log           bsize=4096   blocks=1566, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
ubuntu@focal2:~$ sudo mount /dev/sda /data
ubuntu@focal2:~$ cd /data
ubuntu@focal2:/data$ df -h
Filesystem      Size  Used Avail Use% Mounted on
udev            2.0G     0  2.0G   0% /dev
tmpfs           394M  960K  393M   1% /run
/dev/vda1        39G  1.3G   38G   4% /
tmpfs           2.0G     0  2.0G   0% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           2.0G     0  2.0G   0% /sys/fs/cgroup
/dev/vda15      105M  3.9M  101M   4% /boot/efi
/dev/loop0       55M   55M     0 100% /snap/core18/1754
/dev/loop1       70M   70M     0 100% /snap/lxd/15457
/dev/loop2       31M   31M     0 100% /snap/snapd/7777
tmpfs           394M     0  394M   0% /run/user/1000
/dev/sda       1014M   40M  975M   4% /data
ubuntu@focal2:/data$ sudo -s
root@focal2:/data# mkdir dir1
root@focal2:/data# mkdir dir2
root@focal2:/data# ls
dir1  dir2
root@focal2:/data# chown nobody:nogroup dir1
root@focal2:/data# chown nobody:nogroup dir2
root@focal2:/data# chmod 777 dir1
root@focal2:/data# chmod 777 dir2
root@focal2:/data# ll
total 4
drwxr-xr-x  4 root   root      30 Jun 16 15:57 ./
drwxr-xr-x 20 root   root    4096 Jun 16 15:56 ../
drwxrwxrwx  2 nobody nogroup    6 Jun 16 15:57 dir1/
drwxrwxrwx  2 nobody nogroup    6 Jun 16 15:57 dir2/
root@focal2:/data# sudo reboot
root@focal2:/data# Connection to 10.5.0.53 closed by remote host.
Connection to 10.5.0.53 closed.
ubuntu@ganso-bastion:~$ ssh 10.5.0.53
Warning: Permanently added '10.5.0.53' (ECDSA) to the list of known hosts.
Welcome to Ubuntu 20.04 LTS (GNU/Linux 5.4.0-37-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

  System information as of Tue Jun 16 16:00:05 UTC 2020

  System load:  0.11              Processes:             145
  Usage of /:   3.1% of 38.60GB   Users logged in:       0
  Memory usage: 5%                IPv4 address for ens3: 10.5.0.53
  Swap usage:   0%


0 updates can be installed immediately.
0 of these updates are security updates.


Last login: Tue Jun 16 15:55:53 2020 from 10.5.0.13
ubuntu@focal2:~$ lsblk
NAME    MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
loop0     7:0    0   55M  1 loop /snap/core18/1754
loop1     7:1    0 69.3M  1 loop /snap/lxd/15457
loop2     7:2    0 30.3M  1 loop /snap/snapd/7777
sda       8:0    0 1020M  0 disk 
vda     252:0    0   40G  0 disk 
├─vda1  252:1    0 39.9G  0 part /
├─vda14 252:14   0    4M  0 part 
└─vda15 252:15   0  106M  0 part /boot/efi
ubuntu@focal2:~$ sudo mount /dev/sda /data
ubuntu@focal2:~$ sudo blkid
/dev/vda1: LABEL="cloudimg-rootfs" UUID="bfd5b501-4b43-4ee0-9cf2-37ac369e4fe0" TYPE="ext4" PARTUUID="807c9158-e442-4cfd-aa48-46c3b7d5c64b"
/dev/vda15: LABEL_FATBOOT="UEFI" LABEL="UEFI" UUID="1E4B-0542" TYPE="vfat" PARTUUID="0e51c68e-0a1a-4c7a-b1ca-6f843f13883c"
/dev/loop0: TYPE="squashfs"
/dev/loop1: TYPE="squashfs"
/dev/loop2: TYPE="squashfs"
/dev/vda14: PARTUUID="ca478454-388d-44f5-9883-1739dd525e4a"
/dev/sda: UUID="198f308d-2486-462e-bbae-d1bf399cb6b5" TYPE="xfs"
ubuntu@focal2:~$ sudo vi /etc/fstab
ubuntu@focal2:~$ sudo cat /etc/fstab
LABEL=cloudimg-rootfs	/	 ext4	defaults	0 0
LABEL=UEFI	/boot/efi	vfat	defaults	0 0
UUID="198f308d-2486-462e-bbae-d1bf399cb6b5" /data xfs defaults,auto,_netdev 0 0
ubuntu@focal2:~$ cd /data
ubuntu@focal2:/data$ ls
dir1  dir2
ubuntu@focal2:/data$ sudo reboot
Connection to 10.5.0.53 closed by remote host.
Connection to 10.5.0.53 closed.
ubuntu@ganso-bastion:~$ ssh 10.5.0.53
Warning: Permanently added '10.5.0.53' (ECDSA) to the list of known hosts.
Welcome to Ubuntu 20.04 LTS (GNU/Linux 5.4.0-37-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

  System information as of Tue Jun 16 16:12:42 UTC 2020

  System load:  0.96              Processes:             156
  Usage of /:   3.1% of 38.60GB   Users logged in:       0
  Memory usage: 5%                IPv4 address for ens3: 10.5.0.53
  Swap usage:   0%


0 updates can be installed immediately.
0 of these updates are security updates.


Last login: Tue Jun 16 16:02:37 2020 from 10.5.0.13
ubuntu@focal2:~$ lsblk
NAME    MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
loop0     7:0    0   55M  1 loop /snap/core18/1754
loop1     7:1    0 69.3M  1 loop /snap/lxd/15457
loop2     7:2    0 30.3M  1 loop /snap/snapd/7777
sda       8:0    0 1020M  0 disk /data
vda     252:0    0   40G  0 disk 
├─vda1  252:1    0 39.9G  0 part /
├─vda14 252:14   0    4M  0 part 
└─vda15 252:15   0  106M  0 part /boot/efi
ubuntu@focal2:~$ cd /data
ubuntu@focal2:/data$ ls
dir1  dir2
ubuntu@focal2:/data$ sudo vi /etc/exports
ubuntu@focal2:/data$ sudo cat /etc/exports
# /etc/exports: the access control list for filesystems which may be exported
#		to NFS clients.  See exports(5).
#
# Example for NFSv2 and NFSv3:
# /srv/homes       hostname1(rw,sync,no_subtree_check) hostname2(ro,sync,no_subtree_check)
#
# Example for NFSv4:
# /srv/nfs4        gss/krb5i(rw,sync,fsid=0,crossmnt,no_subtree_check)
# /srv/nfs4/homes  gss/krb5i(rw,sync,no_subtree_check)
#
/data/dir1 *(rw,async,root_squash,subtree_check)
/data/dir2

ubuntu@focal2:/data$ systemctl -a | grep nfs
  proc-fs-nfsd.mount                                                                                    loaded    active   mounted   NFSD configuration filesystem                                                      
  nfs-blkmap.service                                                                                    loaded    active   running   pNFS block layout mapping daemon                                                   
  nfs-config.service                                                                                    loaded    inactive dead      Preprocess NFS configuration                                                       
  nfs-idmapd.service                                                                                    loaded    active   running   NFSv4 ID-name mapping service                                                      
  nfs-mountd.service                                                                                    loaded    active   running   NFS Mount Daemon                                                                   
  nfs-server.service                                                                                    loaded    active   exited    NFS server and services                                                            
  nfs-utils.service                                                                                     loaded    inactive dead      NFS server and client services                                                     
  nfs-client.target                                                                                     loaded    active   active    NFS client services                                                                
ubuntu@focal2:/data$ sudo reboot
Connection to 10.5.0.53 closed by remote host.
Connection to 10.5.0.53 closed.
ubuntu@ganso-bastion:~$ ssh 10.5.0.53
Warning: Permanently added '10.5.0.53' (ECDSA) to the list of known hosts.
Welcome to Ubuntu 20.04 LTS (GNU/Linux 5.4.0-37-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

  System information as of Tue Jun 16 16:14:30 UTC 2020

  System load:  0.45              Processes:             137
  Usage of /:   3.1% of 38.60GB   Users logged in:       0
  Memory usage: 4%                IPv4 address for ens3: 10.5.0.53
  Swap usage:   0%


0 updates can be installed immediately.
0 of these updates are security updates.


Last login: Tue Jun 16 16:12:44 2020 from 10.5.0.13
ubuntu@focal2:~$ lsblk
NAME    MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
loop0     7:0    0   55M  1 loop /snap/core18/1754
loop1     7:1    0 69.3M  1 loop /snap/lxd/15457
loop2     7:2    0 30.3M  1 loop /snap/snapd/7777
sda       8:0    0 1020M  0 disk /data
vda     252:0    0   40G  0 disk 
├─vda1  252:1    0 39.9G  0 part /
├─vda14 252:14   0    4M  0 part 
└─vda15 252:15   0  106M  0 part /boot/efi
ubuntu@focal2:~$ sudo showmount -e
clnt_create: RPC: Program not registered
ubuntu@focal2:~$ systemctl -a | grep nfs
  proc-fs-nfsd.mount                                                                                    loaded    active   mounted   NFSD configuration filesystem                                                      
  nfs-blkmap.service                                                                                    loaded    active   running   pNFS block layout mapping daemon                                                   
  nfs-config.service                                                                                    loaded    inactive dead      Preprocess NFS configuration                                                       
  nfs-idmapd.service                                                                                    loaded    inactive dead      NFSv4 ID-name mapping service                                                      
  nfs-mountd.service                                                                                    loaded    inactive dead      NFS Mount Daemon                                                                   
● nfs-server.service                                                                                    loaded    failed   failed    NFS server and services                                                            
  nfs-utils.service                                                                                     loaded    inactive dead      NFS server and client services                                                     
  nfs-client.target                                                                                     loaded    active   active    NFS client services                                                                
ubuntu@focal2:~$ vi /etc/apt/
apt.conf.d/     auth.conf.d/    preferences.d/  sources.list    sources.list.d/ trusted.gpg.d/  
ubuntu@focal2:~$ sudo vi /etc/apt/sources.list
ubuntu@focal2:~$ sudo cat /etc/apt/sources.list
## Note, this file is written by cloud-init on first boot of an instance
## modifications made here will not survive a re-bundle.
## if you wish to make changes you can:
## a.) add 'apt_preserve_sources_list: true' to /etc/cloud/cloud.cfg
##     or do the same in user-data
## b.) add sources in /etc/apt/sources.list.d
## c.) make changes to template file /etc/cloud/templates/sources.list.tmpl

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://nova.clouds.archive.ubuntu.com/ubuntu/ focal main restricted
# deb-src http://nova.clouds.archive.ubuntu.com/ubuntu/ focal main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://nova.clouds.archive.ubuntu.com/ubuntu/ focal-updates main restricted
# deb-src http://nova.clouds.archive.ubuntu.com/ubuntu/ focal-updates main restricted
deb http://nova.clouds.archive.ubuntu.com/ubuntu/ focal-proposed main restricted
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://nova.clouds.archive.ubuntu.com/ubuntu/ focal universe
# deb-src http://nova.clouds.archive.ubuntu.com/ubuntu/ focal universe
deb http://nova.clouds.archive.ubuntu.com/ubuntu/ focal-updates universe
# deb-src http://nova.clouds.archive.ubuntu.com/ubuntu/ focal-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://nova.clouds.archive.ubuntu.com/ubuntu/ focal multiverse
# deb-src http://nova.clouds.archive.ubuntu.com/ubuntu/ focal multiverse
deb http://nova.clouds.archive.ubuntu.com/ubuntu/ focal-updates multiverse
# deb-src http://nova.clouds.archive.ubuntu.com/ubuntu/ focal-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://nova.clouds.archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse
# deb-src http://nova.clouds.archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu focal partner
# deb-src http://archive.canonical.com/ubuntu focal partner

deb http://security.ubuntu.com/ubuntu focal-security main restricted
# deb-src http://security.ubuntu.com/ubuntu focal-security main restricted
deb http://security.ubuntu.com/ubuntu focal-security universe
# deb-src http://security.ubuntu.com/ubuntu focal-security universe
deb http://security.ubuntu.com/ubuntu focal-security multiverse
# deb-src http://security.ubuntu.com/ubuntu focal-security multiverse

ubuntu@focal2:~$ sudo apt update
Hit:1 http://nova.clouds.archive.ubuntu.com/ubuntu focal InRelease
Get:2 http://nova.clouds.archive.ubuntu.com/ubuntu focal-updates InRelease [107 kB]
Get:3 http://nova.clouds.archive.ubuntu.com/ubuntu focal-proposed InRelease [265 kB]   
Get:4 http://nova.clouds.archive.ubuntu.com/ubuntu focal-backports InRelease [98.3 kB]
Get:5 http://security.ubuntu.com/ubuntu focal-security InRelease [107 kB]             
Get:6 http://nova.clouds.archive.ubuntu.com/ubuntu focal/universe amd64 Packages [8628 kB]
Get:7 http://nova.clouds.archive.ubuntu.com/ubuntu focal/universe Translation-en [5124 kB]
Get:8 http://nova.clouds.archive.ubuntu.com/ubuntu focal/universe amd64 c-n-f Metadata [265 kB]
Get:9 http://nova.clouds.archive.ubuntu.com/ubuntu focal/multiverse amd64 Packages [144 kB]
Get:10 http://nova.clouds.archive.ubuntu.com/ubuntu focal/multiverse Translation-en [104 kB]
Get:11 http://nova.clouds.archive.ubuntu.com/ubuntu focal/multiverse amd64 c-n-f Metadata [9136 B]
Get:12 http://nova.clouds.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages [192 kB]
Get:13 http://nova.clouds.archive.ubuntu.com/ubuntu focal-updates/main Translation-en [75.1 kB]
Get:14 http://nova.clouds.archive.ubuntu.com/ubuntu focal-updates/main amd64 c-n-f Metadata [5496 B]
Get:15 http://nova.clouds.archive.ubuntu.com/ubuntu focal-updates/restricted amd64 Packages [11.0 kB]
Get:16 http://nova.clouds.archive.ubuntu.com/ubuntu focal-updates/restricted Translation-en [3000 B]
Get:17 http://nova.clouds.archive.ubuntu.com/ubuntu focal-updates/universe amd64 Packages [108 kB]
Get:18 http://nova.clouds.archive.ubuntu.com/ubuntu focal-updates/universe Translation-en [50.6 kB]
Get:19 http://nova.clouds.archive.ubuntu.com/ubuntu focal-updates/universe amd64 c-n-f Metadata [3892 B]
Get:20 http://nova.clouds.archive.ubuntu.com/ubuntu focal-updates/multiverse amd64 Packages [1172 B]
Get:21 http://nova.clouds.archive.ubuntu.com/ubuntu focal-updates/multiverse Translation-en [540 B]
Get:22 http://nova.clouds.archive.ubuntu.com/ubuntu focal-updates/multiverse amd64 c-n-f Metadata [116 B]
Get:23 http://nova.clouds.archive.ubuntu.com/ubuntu focal-proposed/main amd64 Packages [60.5 kB]
Get:24 http://nova.clouds.archive.ubuntu.com/ubuntu focal-proposed/main Translation-en [26.5 kB]
Get:25 http://nova.clouds.archive.ubuntu.com/ubuntu focal-proposed/main amd64 c-n-f Metadata [1752 B]
Get:26 http://nova.clouds.archive.ubuntu.com/ubuntu focal-proposed/restricted amd64 Packages [10.7 kB]
Get:27 http://nova.clouds.archive.ubuntu.com/ubuntu focal-proposed/restricted Translation-en [2952 B]
Get:28 http://nova.clouds.archive.ubuntu.com/ubuntu focal-proposed/restricted amd64 c-n-f Metadata [116 B]
Get:29 http://nova.clouds.archive.ubuntu.com/ubuntu focal-backports/main amd64 c-n-f Metadata [112 B]
Get:30 http://nova.clouds.archive.ubuntu.com/ubuntu focal-backports/restricted amd64 c-n-f Metadata [116 B]
Get:31 http://nova.clouds.archive.ubuntu.com/ubuntu focal-backports/universe amd64 Packages [2784 B]
Get:32 http://nova.clouds.archive.ubuntu.com/ubuntu focal-backports/universe Translation-en [1272 B]
Get:33 http://nova.clouds.archive.ubuntu.com/ubuntu focal-backports/universe amd64 c-n-f Metadata [192 B]
Get:34 http://nova.clouds.archive.ubuntu.com/ubuntu focal-backports/multiverse amd64 c-n-f Metadata [116 B]
Get:35 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages [105 kB]
Get:36 http://security.ubuntu.com/ubuntu focal-security/main Translation-en [39.1 kB]
Get:37 http://security.ubuntu.com/ubuntu focal-security/main amd64 c-n-f Metadata [2664 B]
Get:38 http://security.ubuntu.com/ubuntu focal-security/restricted amd64 Packages [11.0 kB]
Get:39 http://security.ubuntu.com/ubuntu focal-security/restricted Translation-en [3000 B]
Get:40 http://security.ubuntu.com/ubuntu focal-security/universe amd64 Packages [34.9 kB]
Get:41 http://security.ubuntu.com/ubuntu focal-security/universe Translation-en [17.3 kB]
Get:42 http://security.ubuntu.com/ubuntu focal-security/universe amd64 c-n-f Metadata [1444 B]
Get:43 http://security.ubuntu.com/ubuntu focal-security/multiverse amd64 Packages [1172 B]
Get:44 http://security.ubuntu.com/ubuntu focal-security/multiverse Translation-en [540 B]
Get:45 http://security.ubuntu.com/ubuntu focal-security/multiverse amd64 c-n-f Metadata [116 B]
Fetched 15.6 MB in 3s (4941 kB/s)                          
Reading package lists... Done
Building dependency tree       
Reading state information... Done
37 packages can be upgraded. Run 'apt list --upgradable' to see them.
ubuntu@focal2:~$ sudo apt list --upgradable
Listing... Done
accountsservice/focal-proposed 0.6.55-0ubuntu12~20.04.1 amd64 [upgradable from: 0.6.55-0ubuntu11]
alsa-ucm-conf/focal-proposed 1.2.2-1ubuntu0.1 all [upgradable from: 1.2.2-1]
apport/focal-proposed 2.20.11-0ubuntu27.3 all [upgradable from: 2.20.11-0ubuntu27.2]
apt-utils/focal-proposed 2.0.3 amd64 [upgradable from: 2.0.2ubuntu0.1]
apt/focal-proposed 2.0.3 amd64 [upgradable from: 2.0.2ubuntu0.1]
busybox-initramfs/focal-updates,focal-proposed 1:1.30.1-4ubuntu6.1 amd64 [upgradable from: 1:1.30.1-4ubuntu6]
busybox-static/focal-updates,focal-proposed 1:1.30.1-4ubuntu6.1 amd64 [upgradable from: 1:1.30.1-4ubuntu6]
cloud-init/focal-proposed 20.2-45-g5f7825e2-0ubuntu1~20.04.1 all [upgradable from: 20.1-10-g71af48df-0ubuntu5]
fwupd-signed/focal-updates,focal-proposed,focal-security 1.27.1ubuntu1+1.3.9-4ubuntu0.1 amd64 [upgradable from: 1.27+1.3.9-4]
fwupd/focal-updates,focal-security 1.3.9-4ubuntu0.1 amd64 [upgradable from: 1.3.9-4]
gir1.2-glib-2.0/focal-proposed 1.64.1-1~ubuntu20.04.1 amd64 [upgradable from: 1.64.0-2]
grub-efi-amd64-signed/focal-proposed 1.142.1+2.04-1ubuntu26 amd64 [upgradable from: 1.142+2.04-1ubuntu26]
initramfs-tools-bin/focal-updates,focal-proposed 0.136ubuntu6.1 amd64 [upgradable from: 0.136ubuntu6]
initramfs-tools-core/focal-updates,focal-proposed 0.136ubuntu6.1 all [upgradable from: 0.136ubuntu6]
initramfs-tools/focal-updates,focal-proposed 0.136ubuntu6.1 all [upgradable from: 0.136ubuntu6]
libaccountsservice0/focal-proposed 0.6.55-0ubuntu12~20.04.1 amd64 [upgradable from: 0.6.55-0ubuntu11]
libapt-pkg6.0/focal-proposed 2.0.3 amd64 [upgradable from: 2.0.2ubuntu0.1]
libfwupd2/focal-updates,focal-security 1.3.9-4ubuntu0.1 amd64 [upgradable from: 1.3.9-4]
libfwupdplugin1/focal-updates,focal-security 1.3.9-4ubuntu0.1 amd64 [upgradable from: 1.3.9-4]
libgirepository-1.0-1/focal-proposed 1.64.1-1~ubuntu20.04.1 amd64 [upgradable from: 1.64.0-2]
liblzma5/focal-proposed 5.2.4-1ubuntu1 amd64 [upgradable from: 5.2.4-1]
libnetplan0/focal-updates,focal-proposed 0.99-0ubuntu3~20.04.2 amd64 [upgradable from: 0.99-0ubuntu3~20.04.1]
libseccomp2/focal-proposed 2.4.3-1ubuntu3.20.04.2 amd64 [upgradable from: 2.4.3-1ubuntu1]
libsqlite3-0/focal-updates,focal-security 3.31.1-4ubuntu0.1 amd64 [upgradable from: 3.31.1-4]
linux-headers-generic/focal-proposed 5.4.0.38.41 amd64 [upgradable from: 5.4.0.37.40]
linux-headers-virtual/focal-proposed 5.4.0.38.41 amd64 [upgradable from: 5.4.0.37.40]
linux-image-virtual/focal-proposed 5.4.0.38.41 amd64 [upgradable from: 5.4.0.37.40]
linux-virtual/focal-proposed 5.4.0.38.41 amd64 [upgradable from: 5.4.0.37.40]
netplan.io/focal-updates,focal-proposed 0.99-0ubuntu3~20.04.2 amd64 [upgradable from: 0.99-0ubuntu3~20.04.1]
nfs-common/focal-proposed 1:1.3.4-2.5ubuntu3.1 amd64 [upgradable from: 1:1.3.4-2.5ubuntu3]
nfs-kernel-server/focal-proposed 1:1.3.4-2.5ubuntu3.1 amd64 [upgradable from: 1:1.3.4-2.5ubuntu3]
python3-apport/focal-proposed 2.20.11-0ubuntu27.3 all [upgradable from: 2.20.11-0ubuntu27.2]
python3-problem-report/focal-proposed 2.20.11-0ubuntu27.3 all [upgradable from: 2.20.11-0ubuntu27.2]
python3-update-manager/focal-proposed 1:20.04.10.1 all [upgradable from: 1:20.04.10]
tmux/focal-proposed 3.0a-2ubuntu0.1 amd64 [upgradable from: 3.0a-2]
update-manager-core/focal-proposed 1:20.04.10.1 all [upgradable from: 1:20.04.10]
xz-utils/focal-proposed 5.2.4-1ubuntu1 amd64 [upgradable from: 5.2.4-1]
ubuntu@focal2:~$ sudo apt install nfs-kernel-server
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  nfs-common
Suggested packages:
  watchdog
The following packages will be upgraded:
  nfs-common nfs-kernel-server
2 upgraded, 0 newly installed, 0 to remove and 35 not upgraded.
Need to get 303 kB of archives.
After this operation, 49.2 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://nova.clouds.archive.ubuntu.com/ubuntu focal-proposed/main amd64 nfs-common amd64 1:1.3.4-2.5ubuntu3.1 [204 kB]
Get:2 http://nova.clouds.archive.ubuntu.com/ubuntu focal-proposed/main amd64 nfs-kernel-server amd64 1:1.3.4-2.5ubuntu3.1 [98.8 kB]
Fetched 303 kB in 1s (495 kB/s)         
(Reading database ... 63254 files and directories currently installed.)
Preparing to unpack .../nfs-common_1%3a1.3.4-2.5ubuntu3.1_amd64.deb ...
Unpacking nfs-common (1:1.3.4-2.5ubuntu3.1) over (1:1.3.4-2.5ubuntu3) ...
Preparing to unpack .../nfs-kernel-server_1%3a1.3.4-2.5ubuntu3.1_amd64.deb ...
Unpacking nfs-kernel-server (1:1.3.4-2.5ubuntu3.1) over (1:1.3.4-2.5ubuntu3) ...
Setting up nfs-common (1:1.3.4-2.5ubuntu3.1) ...
nfs-utils.service is a disabled or a static unit not running, not starting it.
Setting up nfs-kernel-server (1:1.3.4-2.5ubuntu3.1) ...
Processing triggers for man-db (2.9.1-1) ...
Processing triggers for systemd (245.4-4ubuntu3.1) ...
ubuntu@focal2:~$ sudo reboot
Connection to 10.5.0.53 closed by remote host.
Connection to 10.5.0.53 closed.
ubuntu@ganso-bastion:~$ ssh 10.5.0.53
ssh: connect to host 10.5.0.53 port 22: Connection refused
ubuntu@ganso-bastion:~$ ssh 10.5.0.53
ssh: connect to host 10.5.0.53 port 22: Connection refused
ubuntu@ganso-bastion:~$ ssh 10.5.0.53
Warning: Permanently added '10.5.0.53' (ECDSA) to the list of known hosts.
"System is booting up. Unprivileged users are not permitted to log in yet. Please come back later. For technical details, see pam_nologin(8)."
Connection closed by 10.5.0.53 port 22
ubuntu@ganso-bastion:~$ ssh 10.5.0.53
Warning: Permanently added '10.5.0.53' (ECDSA) to the list of known hosts.
Welcome to Ubuntu 20.04 LTS (GNU/Linux 5.4.0-37-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

  System information as of Tue Jun 16 16:18:35 UTC 2020

  System load:  0.9               Processes:             157
  Usage of /:   3.5% of 38.60GB   Users logged in:       0
  Memory usage: 6%                IPv4 address for ens3: 10.5.0.53
  Swap usage:   0%


34 updates can be installed immediately.
5 of these updates are security updates.
To see these additional updates run: apt list --upgradable


Last login: Tue Jun 16 16:14:31 2020 from 10.5.0.13
ubuntu@focal2:~$ sudo -s
root@focal2:/home/ubuntu# lsblk
NAME    MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
loop0     7:0    0   55M  1 loop /snap/core18/1754
loop1     7:1    0 69.3M  1 loop /snap/lxd/15457
loop2     7:2    0 30.3M  1 loop /snap/snapd/7777
sda       8:0    0 1020M  0 disk /data
vda     252:0    0   40G  0 disk 
├─vda1  252:1    0 39.9G  0 part /
├─vda14 252:14   0    4M  0 part 
└─vda15 252:15   0  106M  0 part /boot/efi
root@focal2:/home/ubuntu# sudo showmount -e
Export list for focal2:
/data/dir2 *
/data/dir1 *
root@focal2:/home/ubuntu# systemctl -a | grep nfs
  proc-fs-nfsd.mount                                                                                    loaded    active   mounted   NFSD configuration filesystem                                                      
  nfs-blkmap.service                                                                                    loaded    active   running   pNFS block layout mapping daemon                                                   
  nfs-config.service                                                                                    loaded    inactive dead      Preprocess NFS configuration                                                       
  nfs-idmapd.service                                                                                    loaded    active   running   NFSv4 ID-name mapping service                                                      
  nfs-mountd.service                                                                                    loaded    active   running   NFS Mount Daemon                                                                   
  nfs-server.service                                                                                    loaded    active   exited    NFS server and services                                                            
  nfs-utils.service                                                                                     loaded    inactive dead      NFS server and client services                                                     
  nfs-client.target                                                                                     loaded    active   active    NFS client services                                                                
root@focal2:/home/ubuntu#