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by incognitum
Thu Jan 23, 2020 4:05 pm
Forum: Advanced users
Topic: Configure PiServer Tool to Listen on Multiple Interfaces??
Replies: 3
Views: 331

Re: Configure PiServer Tool to Listen on Multiple Interfaces??

3. Lastly, I found that the way PiServer works out of the box limits its functionality. I found a patch on github to fix this along with a few threads from the official PiServer github development page that helped me understand what was going on. They are: Ah, yes. You are right. Should have Pi 4 w...
by incognitum
Thu Jan 23, 2020 3:55 pm
Forum: Staffroom, classroom and projects
Topic: [solved] PiServer via terminal
Replies: 22
Views: 2865

Re: PiServer via terminal

florifreeman wrote:
Thu Jan 23, 2020 3:37 pm
Now it shows => "mount.nfs: requested NFS version or transport protocol is not supported" (??)
NFS server did not throw any errors on startup?
("systemctl status nfs-kernel-server" on piserver server)
by incognitum
Thu Jan 23, 2020 12:45 pm
Forum: Staffroom, classroom and projects
Topic: [solved] PiServer via terminal
Replies: 22
Views: 2865

Re: PiServer via terminal

The server is a fresh clean install of Ubuntu Server. I recall Ubuntu server offers a list of server roles to install during install. Any chance you could have accidentally selected "DHCP daemon" when you meant "DHCP client" there? If there may be more servers in your network that could have this p...
by incognitum
Thu Jan 23, 2020 12:21 pm
Forum: Networking and servers
Topic: NFSv4 with user-level Kerberos
Replies: 20
Views: 1561

Re: NFSv4 with user-level Kerberos

[*] Sshfs is slow. Correct, it will not win benchmarks. However the disk IO of the average student saving some Scratch project, some python code or some other document, is not that high. So it can serve its purpose. No experience with gnome though. At any rate, I'm currently having some success wit...
by incognitum
Wed Jan 22, 2020 9:15 pm
Forum: Networking and servers
Topic: NFSv4 with user-level Kerberos
Replies: 20
Views: 1561

Re: NFSv4 with user-level Kerberos

https://www.raspberrypi.org/blog/piserver/ might be using a fully kerberised version of NFSv4 to mount home directories. Does anyone know? Negative. It mounts home directories through sshfs (which uses ssh's sftp protocol). Problem with kerberos is that it pretty much requires static IPs, forward a...
by incognitum
Tue Jan 21, 2020 5:47 pm
Forum: Staffroom, classroom and projects
Topic: [solved] PiServer via terminal
Replies: 22
Views: 2865

Re: PiServer via terminal

florifreeman wrote:
Tue Jan 21, 2020 1:49 pm
dhcpd[1087]
You also have (ISC?) dhcpd running on the same server?!
by incognitum
Tue Jan 21, 2020 12:59 pm
Forum: Staffroom, classroom and projects
Topic: [solved] PiServer via terminal
Replies: 22
Views: 2865

Re: PiServer via terminal

I can´t see any IP adress during boot so iam not sure which IP it gets. How can i find out? Kernel should print that to console, among the lines of: IP-config: Got DHCP answer from 1.2.3.4, my address is 1.2.3.5 IP-config: complete device: eth0, hwaddr: xx:xx:xx:xx:xx, ipaddr=1.2.3.5, mask=255.255....
by incognitum
Tue Jan 21, 2020 9:42 am
Forum: Advanced users
Topic: Configure PiServer Tool to Listen on Multiple Interfaces??
Replies: 3
Views: 331

Re: Configure PiServer Tool to Listen on Multiple Interfaces??

I set up the PiServer tool on a VM and configured it to act as DHCP relay, I assume you configured piserver as proxy dhcp. DHCP relay = broadcast forwarding = ip helper-address So something else. I attempted to set up an ip helper, but I have been unsuccessful in getting it to work on any subnet ot...
by incognitum
Tue Jan 21, 2020 9:09 am
Forum: Staffroom, classroom and projects
Topic: [solved] PiServer via terminal
Replies: 22
Views: 2865

Re: PiServer via terminal

"IP-Config: Gateway not on directly connected network" (?) What IP/netmask/gateway does it report receiving through dhcp? Gateway IP must be inside same subnet as Pi. So if client IP is say 10.1.2.5 and netmask is 255.255.255.0, gateway IP must be between 10.1.2.1 and 10.1.2.254 (do not use first a...
by incognitum
Mon Jan 20, 2020 11:19 am
Forum: Staffroom, classroom and projects
Topic: [solved] PiServer via terminal
Replies: 22
Views: 2865

Re: PiServer via terminal

If you have a serial console cable you may want to capture and check the output above the kernel panic. Also double check in the output that the Linux kernel is receiving a proper DHCP lease. (It does a new request, so the lease it receives can be different then what was used during the network boot...
by incognitum
Tue Jan 14, 2020 12:54 pm
Forum: Staffroom, classroom and projects
Topic: Need advice - practical networking tutoring
Replies: 10
Views: 1595

Re: Need advice - practical networking tutoring

tpyo kingg wrote:
Sat Jan 11, 2020 6:36 am
3. Basics of filtering with IPTables
Would not teach legacy stuff like iptables, but go straight for nft instead.
by incognitum
Mon Jan 06, 2020 11:46 pm
Forum: Advanced users
Topic: Network boot using serial number to define root directory
Replies: 2
Views: 318

Re: Network boot using serial number to define root directory

The logs of your tftp server software confirm that the client Pi actually did download cmdline.txt from "/tftpboot/#serial#/cmdline.txt" and not from anywhere else? However, when I change that client over to another pi, with a different serial, it seems to boot from the same 10.0.0.37/clientfs/rpi01...
by incognitum
Mon Dec 30, 2019 1:44 pm
Forum: Beginners
Topic: How to prepare complete OS and software for multiple stations
Replies: 12
Views: 598

Re: How to prepare complete OS and software for multiple stations

You might want to practice with some Pi3 and netbooting them. Yes. For multi-user environments (like schools), there is piserver. https://www.raspberrypi.org/blog/piserver/ All Pi use same image, so only need to install extra software once. Do need to create accounts for all students (or link it to...
by incognitum
Sun Dec 29, 2019 4:37 pm
Forum: Beginners
Topic: Is DST recognised with no network time server?
Replies: 9
Views: 337

Re: Is DST recognised with no network time server?

Do keep in mind that the rules regarding daylight savings time have changed over the years, and can change again in the future. Some countries have abandoned it, exact date/time it starts differs by region, etc. May not be a problem if this is just for your personal use. In the rare event the rules ...
by incognitum
Sat Dec 28, 2019 10:26 pm
Forum: Beginners
Topic: Overclock using the Berryboot
Replies: 1
Views: 285

Re: Overclock using the Berryboot

Just add your overclock settings either at the top of the file, or at the bottom under [all]
Leave existing stuff as-is.
by incognitum
Sat Dec 28, 2019 6:17 pm
Forum: Staffroom, classroom and projects
Topic: Warranty and mean time to failure
Replies: 4
Views: 969

Re: Warranty and mean time to failure

As to warranty; that's whatever the legislation says it is in the UK, whatever has been agreed with the seller. If a school or other educational establishment it is likely different to what it would be for other consumers but your IT department should be able to advise you. Also be aware that somet...
by incognitum
Sun Dec 22, 2019 8:04 pm
Forum: Troubleshooting
Topic: Cannot edit configuration on BoothBerry SSD installation.
Replies: 2
Views: 125

Re: Cannot edit configuration on BoothBerry SSD installation.

What weather plugin?

Don't think you can set any city in the Pi config utility.
by incognitum
Fri Dec 20, 2019 4:36 pm
Forum: Advanced users
Topic: nfsroot - firewall configuration on the client
Replies: 14
Views: 696

Re: nfsroot - firewall configuration on the client

Eh, you have a writable NFS share to which basically any computer/device in your network can make changes to No, not really. the export is only available to the ip address of the pi. Barring ip-spoofing, or a security breach on the file server, no other devices should be writing to the nfs export. ...
by incognitum
Fri Dec 20, 2019 12:28 pm
Forum: Advanced users
Topic: nfsroot - firewall configuration on the client
Replies: 14
Views: 696

Re: nfsroot - firewall configuration on the client

Eh, you have a writable NFS share to which basically any computer/device in your network can make changes to.

But you do are concerned about setting up a firewall on the client?
by incognitum
Tue Dec 17, 2019 10:45 pm
Forum: Staffroom, classroom and projects
Topic: Piserver DHCP Proxy - Clients do not boot reliably
Replies: 24
Views: 3160

Re: Piserver DHCP Proxy - Clients do not boot reliably

would a Pi4 with the beta netboot work? Generally speaking: Pi 4 do work with Piserver, yes. Provided you flash the Pi 4's EEPROM with the beta network boot code and the right bootorder setting. Don't know whether or not it may currently be affected by the same issue, though. IF you already have Pi...
by incognitum
Mon Dec 16, 2019 11:54 pm
Forum: Advanced users
Topic: Raspberry Pi4 bootloader - network boot support - BETA
Replies: 90
Views: 28658

Re: Raspberry Pi4 bootloader - network boot support - BETA

uncarvedblock78 wrote:
Mon Dec 16, 2019 4:42 pm
permissions on /home are uid:gid=root mode=755
permissions on /home/pi are uid:gid=1000 mode=755
Don't forget to check / as well. ("stat /volume1/rpi-rootfs" on your Synology)
by incognitum
Mon Dec 16, 2019 4:25 pm
Forum: Advanced users
Topic: Raspberry Pi4 bootloader - network boot support - BETA
Replies: 90
Views: 28658

Re: Raspberry Pi4 bootloader - network boot support - BETA

uncarvedblock78 wrote:
Mon Dec 16, 2019 2:21 pm
The permissions for /home/pi in the nfs export appear to be correct (uid:gid=1000 mode=755).
Also double check the parent directories (/home and /) have "x" permission for other users.
by incognitum
Mon Dec 16, 2019 1:48 pm
Forum: Staffroom, classroom and projects
Topic: Piserver DHCP Proxy - Clients do not boot reliably
Replies: 24
Views: 3160

Re: Piserver DHCP Proxy - Clients do not boot reliably

I'm not follwing everything, but could it be that dnsmasq sends the wrong file (and not the Pi asks for the wrong file)? Note that the second column of the tcpdump packet capture clearly shows that there are two different Pi (one with MAC address ending in :50 and one with MAC address ending in :1d...
by incognitum
Mon Dec 16, 2019 12:06 pm
Forum: Staffroom, classroom and projects
Topic: Piserver DHCP Proxy - Clients do not boot reliably
Replies: 24
Views: 3160

Re: Piserver DHCP Proxy - Clients do not boot (UPDATE)

When I boot them up one by one and wait until the login screen appears before I power up the next Pi, it works. But this worked without the SD cards also. Suspect that if you wait 2 seconds between powering up the next Pi, it also works. I think it might be a bootcode bug, in which the Pi is snatch...
by incognitum
Mon Dec 16, 2019 11:47 am
Forum: Staffroom, classroom and projects
Topic: [solved*] PiServer and Arduino
Replies: 8
Views: 1285

Re: [solved*] PiServer and Arduino

oth wrote:
Fri Dec 13, 2019 4:42 pm
thank you so much for the help and suggestions. I will try this next week.
Arduino fixed the permissions inside their tarball (per), so just redownloading without the chmod should work.

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