====== LLicències del ParaVision ======

Les llicències a l'antic ordinador estaven associades al **hostid = 001635008807**

<file>
...
#<!-- LICENSE START --> 
SERVER sermn112 001635008807 1700
DAEMON bruker_ls /usr/local/flexlm/Bruker 
DAEMON bbmri_ls /usr/local/flexlm/Bruker
...
</file>

que es correspon a **l'adreça MAC 00:16:35:00:88:07** del dispositiu de xarxa //eth0//

<file>
[root@sermn112 root]# ip addr
1: lo: <LOOPBACK,UP> mtu 16436 qdisc noqueue 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 brd 127.255.255.255 scope host lo
4: dev11794: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000
    link/ether 00:10:18:14:59:ff brd ff:ff:ff:ff:ff:ff
5: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:16:35:00:88:07 brd ff:ff:ff:ff:ff:ff
    inet 192.168.2.12/24 brd 192.168.2.255 scope global eth0
</file>

Aquest dispositiu **és el que està a la placa base,** o sigui que no es pot transferir al nou ordinador i, en conseqüència, les llicències associades a aquest hostid tampoc es poden transferir.

===== Fitxer de llicències =====

Aquestes són les llicències del ParaVision a l'ordinador antic que s'han transferit al nou ordinador,

<file>
#NOTE: You can edit the hostname on the server line (1st arg),
#      the port address on the server line (3rd arg),
#      or the path to the daemon on the daemon line (2nd arg)
#      and any right-half of a string (b) of the form a=b
#      where a is all lowercase.
#      Any other changes will invalidate this license.

#<!-- LICENSE START --> 
SERVER sermn112 001635008807 1700
DAEMON bruker_ls /usr/local/flexlm/Bruker 
DAEMON bbmri_ls /usr/local/flexlm/Bruker
#
# TOPSPIN 2
#
FEATURE TOPSPIN2 bruker_ls 0.0 29-may-2024 1 DB5EE0D1B6D41336FB3E \
	vendor_info=" for hostid(s) : 001635008807" \
	ISSUER=003048741683
FEATURE TOPSPIN_1D bruker_ls 0.0 29-may-2024 1 2B7E00A170B10F13CE6C \
	vendor_info=" for hostid(s) : 001635008807" \
	ISSUER=003048741683
FEATURE TOPSPIN_2D bruker_ls 0.0 29-may-2024 1 2B9E30E170A9446ED119 \
	vendor_info=" for hostid(s) : 001635008807" \
	ISSUER=003048741683
FEATURE XWINPLOT bruker_ls 0.0 29-may-2024 1 EB3E7041DC49A8E88C66 \
	vendor_info=" for hostid(s) : 001635008807" \
	ISSUER=003048741683
FEATURE TOPSPIN_ACQU bruker_ls 0.0 29-may-2024 1 7BCE408134EF3D45D6FB \
	vendor_info=" for hostid(s) : 001635008807" \
	ISSUER=003048741683
FEATURE NMRSIM bruker_ls 0.0 29-may-2024 1 EBDE1011C44DB45F3533 \
	vendor_info=" for hostid(s) : 001635008807" \
	ISSUER=003048741683
FEATURE NMRCHECK bruker_ls 0.0 29-may-2024 1 BBDEC0F1ED2C3CD7A387 \
	vendor_info=" for hostid(s) : 001635008807" \
	ISSUER=003048741683
FEATURE NMRGUIDE bruker_ls 0.0 29-may-2024 1 7BBE80E13B533908CD0F \
	vendor_info=" for hostid(s) : 001635008807" \
	ISSUER=003048741683
FEATURE AUREMOL2.0 bruker_ls 0.0 29-aug-2009 uncounted \
	AB0EC0D1D587C8731CB0 HOSTID=001635008807 vendor_info=" for \
	hostid(s) : 001635008807" ISSUER=003048741683
FEATURE AUTOLINK bruker_ls 0.0 29-nov-2009 uncounted \
	1BFEF071CF46CED2DEFF HOSTID=001635008807 vendor_info=" for \
	hostid(s) : 001635008807" ISSUER=003048741683
FEATURE TOPSPIN_ACQU bruker_ls 0.0 29-apr-2023 1 6B6E50B17D9F36A5A09C \
 vendor_info=" for hostid(s) : 001635008807" \ 
#
# PV License Manager 1.000 (C) Copyright Bruker BioSpin MRI GmbH, 2002-2008 
# generated on host 149.236.5.194 
# License ID : 28227@1209393614
#  
INCREMENT PVSTARTUP bbmri_ls 4.000 28-apr-2033 1 \ 
        ISSUER=00304870aa810430WWWeWtHIommFWWeItuWWPPWo0493S2380w \ 
        SIGN="0050 9718 2699 9B19 AFC6 4000 79C1 3400 9D6B 342E FA6C \ 
        1BAC 65FA 8997 BF7B" 
INCREMENT PVDATMAN bbmri_ls 4.000 28-apr-2033 1 \ 
        ISSUER=00304870aa810430WWWeWtHIommFWWeItuWWPPWo04gS3BSnw \ 
        SIGN="00CA 0D06 080D 85C3 990C 1964 93C8 AD00 2344 26E6 86F2 \ 
        0E76 5E89 11AC 34A9" 
INCREMENT 3DVISUAL bbmri_ls 4.000 28-apr-2033 1 \ 
        ISSUER=00304870aa810430WWWeWtHIommFWWeItuWWPPWotg4Z98Svw \ 
        SIGN="00E4 11CD B5D7 A957 C51C 44AF 7AAC 7500 33F9 6847 EB32 \ 
        F6A7 6D89 28C3 1DBB" 
INCREMENT NMRCALC bbmri_ls 4.000 28-apr-2033 1 \ 
        ISSUER=00304870aa8171dd999394i6QEEy99364599ww9QWqYyrGyg \ 
        SIGN="004E 1FA2 94E8 2A7D 9347 1407 EC6B 9300 D4B8 CA57 11FC \ 
        CD0D 53DC BEB7 CC7B" 
INCREMENT DCMSTORAGE bbmri_ls 4.000 28-apr-2033 1 \ 
        ISSUER=00304870aa8171dd999394i6QEEy99364599ww9QUyquIeYrpig \ 
        SIGN="001E 22F1 B512 48B4 E0B0 3E7B 6F8C 6600 DA65 5B79 B0D5 \ 
        3942 188C 1DBD 0F84" 
INCREMENT PVMDTI bbmri_ls 4.000 28-apr-2033 1 \ 
        ISSUER=00304870aa8171dd999394i6QEEy99364599ww9QRPqUIsg \ 
        SIGN="00DF C064 A08C E843 4FB9 0D53 1B0B 3400 41E8 BE5B D9EF \ 
        B4E3 359E 34CE F1A2" 
INCREMENT PVMSPECTRO bbmri_ls 4.000 28-apr-2033 1 \ 
        ISSUER=00304870aa8171dd999394i6QEEy99364599ww9QRPquRiyIYeg \ 
        SIGN="0037 3502 A879 1567 43C9 E4E2 7BA1 F200 2E6A BB8B 6F4A \ 
        5A6E 40BA 474A 16F0"
#
# PV License Manager 1.000 (C) Copyright Bruker BioSpin MRI GmbH, 2002-2008
# generated on host 149.236.5.194
# License ID : 4272@1236257295
#
INCREMENT PVSTARTUP bbmri_ls 5.000 5-mar-2034 1 \
        ISSUER=003048c038225177xxxCxB501994xxC0BMxx22x1pqDf3sfGpY \
        SIGN="001A 29C0 E1D2 79AE EBF8 A2DC D65E 6A00 7DD1 D207 CEF1 \
        5F92 D140 8285 8FAA"
INCREMENT PVDATMAN bbmri_ls 5.000 5-mar-2034 1 \
        ISSUER=003048c038225177xxxCxB501994xxC0BMxx22x1pq73fU3iY \
        SIGN="00B6 74C0 13A1 E315 3B6A EE2A 9984 3800 6FEE 895E F1EA \
        79F0 0398 AD26 9815"
INCREMENT 3DVISUAL bbmri_ls 5.000 5-mar-2034 1 \
        ISSUER=003048c038225177xxxCxB501994xxC0BMxx22x1B7qEDG3yY \
        SIGN="004F 2C97 3896 9DA9 4205 BFBB F1FE 3200 5FDA 67BC 7651 \
        1CCB 02FC A20F 6A63"
INCREMENT NMRCALC bbmri_ls 5.000 5-mar-2034 1 \
        ISSUER=003048c038225177xxxCxB501994xxC0BMxx22x1iUs43y4Y \
        SIGN="0044 0EE4 73E1 BB1A 0769 4304 33A4 D300 E0D5 9427 FA52 \
        1C82 565B F9F5 D4AB"
INCREMENT DCMSTORAGE bbmri_ls 5.000 5-mar-2034 1 \
        ISSUER=003048c038225177xxxCxB501994xxC0BMxx22x174UDfOs3Q5Y \
        SIGN="00A3 62E8 FDAB ED1B DD22 C306 EE0B 5700 6065 6A4C 5E96 \
        945A 4B89 F0B5 8508"
INCREMENT PVMDTI bbmri_ls 5.000 5-mar-2034 1 \
        ISSUER=003048c038225177xxxCxB501994xxC0BMxx22x1pqU7fEY \
        SIGN="0016 A048 7FEB DA0B 94B6 E1AB A50B 7700 BB7A 07F2 BA7E \
        8DFF 7BDB DFC2 6347"
INCREMENT PVMEPI bbmri_ls 5.000 5-mar-2034 1 \
        ISSUER=003048c038225177xxxCxB501994xxC0BMxx22x1pqU5pEY \
        SIGN="0095 8C66 E0FE E142 AA68 7778 6D33 1700 AE4D 72C6 0815 \
        2C44 70F9 151A EE3D"
INCREMENT PVMUTE bbmri_ls 5.000 5-mar-2034 1 \
        ISSUER=003048c038225177xxxCxB501994xxC0BMxx22x1pqUGf5Y \
        SIGN="0060 13DC 8050 A699 AF01 A44F 4493 7200 739E CA75 1E5D \
        17CF 8E9A 1C8C 4EB2"
INCREMENT PVMSPECTRO bbmri_ls 5.000 5-mar-2034 1 \
        ISSUER=003048c038225177xxxCxB501994xxC0BMxx22x1pqUDp54fsOY \
        SIGN="0067 5C0E C11C F727 52BF 239F E74A 0200 7969 91CD EC4E \
        5A06 4F72 3EB9 9FD9"
# NOTE: You can edit the following items: 
#       - hostnames in the SERVER line(s), 
#       - port number(s) (TCP/IP) in the SERVER line(s), or 
#       - pathnames in the DAEMON line 
#       Any other changes may invalidate your license! 
#<!-- LICENSE END --> 
</file>

Edito el fitxer i canvio el nom del servidor de //sermn112// a //sermn115//.

===== Virtual Ethernet Interface =====

Una possible solució seria crear una interfície de xarxa virtual amb l'adreça MAC corresponent al hostid de les llicències,
  * [[https://unix.stackexchange.com/questions/152331/how-can-i-create-a-virtual-ethernet-interface-on-a-machine-without-a-physical-ad | How can I create a virtual ethernet interface on a machine without a physical adapter?]]
    * [[wp>iproute2]]
    * [[http://www.pocketnix.org/posts/Linux%20Networking:%20Dummy%20Interfaces%20and%20Virtual%20Bridges | Linux Networking: Dummy Interfaces and Virtual Bridges]]
  * [[https://unix.stackexchange.com/questions/335284/how-can-we-create-multiple-dummy-interfaces-on-linux | How can we create multiple dummy interfaces on Linux?]]
  * [[http://wiki.networksecuritytoolkit.org/index.php/Dummy_Interface | Dummy Interface]]

Provo a crear un dispositiu de xarxa virtual,

<file>
root@cie-50-189:/etc/apt/sources.list.d# lsmod  | grep dummy
root@cie-50-189:/etc/apt/sources.list.d# modprobe dummy
root@cie-50-189:/etc/apt/sources.list.d# lsmod  | grep dummy

root@cie-50-189:/etc/apt/sources.list.d# ip link set name eth10 dev dummy0

root@cie-50-189:/etc/apt/sources.list.d# ip link show eth10
3: eth10: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
    link/ether 72:41:bb:27:88:0d brd ff:ff:ff:ff:ff:ff

root@cie-50-189:/etc/apt/sources.list.d# ip link set eth10 address 00:16:35:00:88:07
</file>

i comprovo que efectivament es crea un dispositiu de xarxa amb l'adreça MAC 00:16:35:00:88:07 corresponent al hostid de les llicències que tenim: 001635008807,

<file>
root@cie-50-189:/etc/apt/sources.list.d# ip link show eth10
3: eth10: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
    link/ether 00:16:35:00:88:07 brd ff:ff:ff:ff:ff:ff
</file>

Per ara el desactivo

<file>
root@cie-50-189:/etc/modules-load.d# ip link set eth10 down
root@cie-50-189:/etc/modules-load.d# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether dc:4a:3e:6f:8d:fa brd ff:ff:ff:ff:ff:ff
    inet 192.168.2.15/24 brd 192.168.2.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::de4a:3eff:fe6f:8dfa/64 scope link 
       valid_lft forever preferred_lft forever
3: eth10: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether 00:16:35:00:88:07 brd ff:ff:ff:ff:ff:ff
</file>

si tingués una adreça IP assignada l'hauríem d'esborrar abans d'eliminar l'enllaç al dispositiu,

<file>
ip addr del 192.168.0.77/24 dev eth10
</file>

però com que no en té, es pot eliminar l'enllaç directament

<file>
ip link delete eth10 type dummy
</file>

i elimino el dispositiu virtual (dummy kernel module)

<file>
root@cie-50-189:/etc/modules-load.d# rmmod dummy
root@cie-50-189:/etc/modules-load.d# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether dc:4a:3e:6f:8d:fa brd ff:ff:ff:ff:ff:ff
    inet 192.168.2.15/24 brd 192.168.2.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::de4a:3eff:fe6f:8dfa/64 scope link 
       valid_lft forever preferred_lft forever
</file>

El problema ara és que el gestor de llicències fa servir l'adreça MAC del dispositiu de xarxa de nom //eth0//, però aquest correspon al dispositiu de xarxa real i no el virtual. Així doncs, caldrà assignar a aquest dispositiu un nom diferent, per exemple //eth1//, i així poder crear un dispositiu de xarxa virtual de nom //eth0//.

Per aconseguir-ho caldrà modificar al fitxer ///etc/udev/rules.d/70-persistent-net.rules// la regla d'assignació del gestor de dispositius //udev// [[informatica:hp_z240mt_offstation#configuracio_de_la_xarxa | creada anteriorment]] de forma semblant a com es descriu a [[http://www.artwork.com/support/linux/eth0_configuration.htm | Configuring eth0 for Flexlm/Hostid.]]

Canvio el nom assignat al dispositiu de //eth0// a //eth1//:

<file>
root@cie-50-189:/etc/udev/rules.d# cat 70-persistent-net.rules
# This file was automatically generated by the /lib/udev/write_net_rules
# program, run by the persistent-net-generator.rules rules file.
#
# You can modify it, as long as you keep each rule on a single
# line, and change only the value of the NAME= key.

# PCI device 0x8086:0x15b7 (e1000e)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="dc:4a:3e:6f:8d:fa", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"
</file>

També cal comprovar els fitxers de configuració del gestor de xarxes //systemd-networkd,// on sembla ser que també es podrà definir del dispositiu virtual de xarxa:

<WRAP info>
The configuration files are read from the files located in the system network directory /lib/systemd/network, the volatile runtime network directory /run/systemd/network and the local administration network directory /etc/systemd/network.

Networks are configured in .network files, see systemd.network(5), and virtual network devices are configured in .netdev files, see systemd.netdev(5).
</WRAP>

Per informació sobre cóm fer-ho, cal consultar les següents pàgines del manual (man pages)
  * systemd.network
  * systemd-networkd (systemd-networkd.service)
  * ...

===== Carregar el mòdul dummy =====

A Debian, els mòduls que s'han de carregar quan es posa en marxa l'ordinador es poden definir al fitxer ///etc/modules// o en un fitxer a part dins la carpeta ///etc/modules-load.d//, per exemple, el fitxer ///etc/modules-load.d/dummy.conf// amb el següent contingut,

<file>
# Load dummy at boot to create virtual network device
dummy
</file>

===== Configurar el mòdul dummy =====

Hi ha dues opcions per configurar el dispositiu //dummy0// com a dispositiu de xarxa virtual. La primera opció és posar al fitxer ///etc/modprobe.d/dummy.conf// les comandes que s'han d'executar per crear el dispositiu de xarxa un cop el kernel hagi carregat el mòdul

<file>
install dummy /sbin/modprobe --ignore-install dummy; \
/sbin/ip link set name ethdummy1 dev dummy0
</file>

La segona és configurar-ho com a servei de //systemd// tal i com s'explica per [[https://wiki.archlinux.org/index.php/Matlab | Matlab a la wiki d'Archlinux.]] Aquesta segona opció em sembla preferible, i és la que decideixo aplicar. Per fer-ho, caldrà crear a //etc/systemd/system// un fitxer //bruker.licensing.service// amb la següent informació,

<file>
[Unit]
Description=Dummy network interface for Bruker TopSpin/ParaVision
Requires=systemd-modules-load.service

[Service]
Type=oneshot
ExecStart=/sbin/ip link set dev dummy0 name eth0
ExecStart=/sbin/ip link set dev eth0 address 00:00:00:00:00:00

[Install]
WantedBy=multi-user.target
</file>

on s'haurà de substituir 00:00:00:00:00:00 per l'adreça MAC corresponent al hostid de les llicències, en aquest cas, 00:16:35:00:88:07 del hostid = 001635008807.

Per finalitzar, s'haurà de configurar l'execució automàtica d'aquest script quan es posi en marxa l'ordinador amb la comanda,

<file>
# systemctl enable bruker.licensing
Created symlink from /etc/systemd/system/multi-user.target.wants/bruker.licensing.service to /etc/systemd/system/bruker.licensing.service.
</file>



===== Referències =====

  * [[https://www.centos.org/forums/viewtopic.php?t=53233 | Permanent dummy interface]]
  * [[https://manpages.debian.org/jessie/systemd/modules-load.d.5.en.html | modules-load.d - Configure kernel modules to load at boot]]
  * [[https://wiki.archlinux.org/index.php/Matlab | Running Matlab on Archlinux]]
  * [[https://unix.stackexchange.com/questions/71064/automate-modprobe-command-at-boot-time-on-fedora | Automate modprobe command at boot time on Fedora]]
  * [[https://ubuntuforums.org/showthread.php?t=2277526 | Where to put fake interface commands and startup? which file?]]
  * [[http://honglus.blogspot.com.es/2011/04/load-kernel-modules-at-boot-time-on.html | Load kernel modules at boot time on Redhat/Centos Linux]]
  * [[https://wiki.archlinux.org/index.php/kernel_modules | Kernel modules]]
  * [[https://en.wikibooks.org/wiki/Changing_Your_MAC_Address/Linux | Changing Your MAC Address/Linux]]
  * [[https://askubuntu.com/questions/676007/how-do-i-make-my-systemd-service-run-via-specific-user-and-start-on-boot | How do I make my systemd service run via specific user and start on boot?]]
  * [[https://wiki.debian.org/systemd | systemd - system and service manager]]
  * [[https://wiki.debian.org/NetworkManager | Network Manager]]
  * [[https://wiki.debian.org/NetworkConfiguration | Network Configuration]]