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====== Esercitazione 4 ======


==== Remote cluster ====

Configurazione dell'export del file system /dev/c16fs sil cluster c16.openlab.infn.it per essere
montatp dal cluster c15-serv.openlab.infn.it


**__Crea le chiavi SSL e configura il cipherlist per il cluster__**

Su C16:

<html><p style="border:1px dashed; background-color:#D9D9D9;">
# mmauth genkey new<br>
Generating RSA private key, 512 bit long modulus<br>
.......++++++++++++<br>
.....++++++++++++<br>
e is 65537 (0x10001)<br>
writing RSA key<br>
mmauth: Command successfully completed<br>
mmauth: Propagating the cluster configuration data to all affected nodes.<br>
<br>
# mmauth genkey new<br>
Generating RSA private key, 512 bit long modulus<br>
.......++++++++++++<br>
.....++++++++++++<br>
e is 65537 (0x10001)<br>
writing RSA key<br>
mmauth: Command successfully completed<br>
mmauth: Propagating the cluster configuration data to all affected nodes.<br>
[root@c16-serv1 ~]# mmauth genkey commit<br>
mmauth: The current authentication files are already committed.<br>
<br>
# mmauth update . -l AUTHONLY<br>
Verifying GPFS is stopped on all nodes ...<br>
mmauth: Command successfully completed<br>
mmauth: Propagating the cluster configuration data to all affected nodes.<br>
<br>
</p></html>

Su C15:

<html><p style="border:1px dashed; background-color:#D9D9D9;">
# mmauth genkey new<br>
Generating RSA private key, 512 bit long modulus<br>
............++++++++++++<br>
...++++++++++++<br>
e is 65537 (0x10001)<br>
writing RSA key<br>
mmauth: Command successfully completed<br>
mmauth: Propagating the cluster configuration data to all affected nodes.<br>
<br>
# mmauth genkey commit<br>
mmauth: The current authentication files are already committed.<br>
<br>
<br>
# mmauth update . -l AUTHONLY<br>
Verifying GPFS is stopped on all nodes ...<br>
mmauth: Command successfully completed<br>
mmauth: Propagating the cluster configuration data to all affected nodes.<br>
<br>
</p></html>

**__Scambio delle chiavi__**

Su C16:

<html><p style="border:1px dashed; background-color:#D9D9D9;">
# scp /var/mmfs/ssl/id_rsa.pub c15-serv1:/root/c16_id_rsa.pub<br>
id_rsa.pub                                                                                                               100%  852     0.8KB/s   00:00<br>
<br>
<br>
# scp c15-serv1:/var/mmfs/ssl/id_rsa.pub /root/c15_id_rsa.pub<br>
id_rsa.pub                                                                                                               100%  870     0.9KB/s   00:00<br>
<br>
</p></html>

**__Su C16: autorizza C15 a montare il file system da C16__**

Su C16:

<html><p style="border:1px dashed; background-color:#D9D9D9;">
# mmauth add c15-serv.openlab.infn.it -k c15_id_rsa.pub<br>
mmauth: Command successfully completed<br>
mmauth: Propagating the cluster configuration data to all affected nodes.<br>
<br>
autorizza cluster15 a montare il file system c16fs<br>
<br>
# mmauth grant c15-serv.openlab.infn.it -f /dev/c16fs<br>
<br>
mmauth: Granting cluster c15-serv.openlab.infn.it access to file system c16fs:<br>
access type rw; root credentials will not be remapped.<br>
<br>
mmauth: Command successfully completed<br>
mmauth: Propagating the cluster configuration data to all affected nodes.<br>
<br>
<br>
# mmauth show<br>
Cluster name:        c15-serv.openlab.infn.it<br>
Cipher list:         AUTHONLY<br>
SHA digest:          7ef9a05b8f00dee2fccaf11af060e536291e4844<br>
File system access:  c16fs     (rw, root allowed)<br>
<br>
Cluster name:        c16.openlab.infn.it (this cluster)<br>
Cipher list:         AUTHONLY<br>
SHA digest:          69b277862781be346ce7cf231e363b422458c3f8<br>
File system access:  (all rw)<br>
<br>
<br>
</p></html>

**__Su C15: aggiungi C16 come cluster da cui montare remote file systems__**

Su C15:

<html><p style="border:1px dashed; background-color:#D9D9D9;">
# mmremotecluster add c16.openlab.infn.it -n c16-serv1,c16-serv2 -k c16_id_rsa.pub<br>
mmremotecluster: Command successfully completed<br>
mmremotecluster: Propagating the cluster configuration data to all<br>
affected nodes.  This is an asynchronous process.<br>
<br>
# mmremotecluster show<br>
Cluster name:    c16.openlab.infn.it<br>
Contact nodes:   c16-serv1,c16-serv2<br>
SHA digest:      69b277862781be346ce7cf231e363b422458c3f8<br>
File systems:    remote_c16fs (c16fs)<br>
<br>
</p></html>

**__Su C15: aggiungi il file system /dev/c16fs come remote file system da montare da C16__**

<html><p style="border:1px dashed; background-color:#D9D9D9;">
# mmremotefs add /dev/remote_c16fs -f /dev/c16fs -T /gpfs/remote_c16fs -C c16.openlab.infn.it<br>
mmremotefs: Propagating the cluster configuration data to all<br>
affected nodes.  This is an asynchronous process.<br>
<br>
# mmremotefs show<br>
Local Name  Remote Name  Cluster name       Mount Point        Mount Options    Automount  Drive  Priority<br>
remote_c16fs c16fs        c16.openlab.infn.it /gpfs/remote_c16fs rw               no           -        0<br>
<br>
</p></html>

**__Su C15: monta il file system remoto__**

Su C15:

<html><p style="border:1px dashed; background-color:#D9D9D9;">
# mmmount /dev/remote_c16fs<br>
Thu Nov 27 10:32:26 CET 2014: mmmount: Mounting file systems ...<br>
# cd /gpfs/remote_c16fs/<br>
# ls<br>
cloni  fileset.quota  fset1  fset2  group.quota  testdir  user.quota<br>
<br>
</p></html>

**__Su C16: visualizza chi monta il file system__**

<html><p style="border:1px dashed; background-color:#D9D9D9;">
# mmlsmount /dev/c16fs -L<br>
<br>
File system c16fs is mounted on 4 nodes:<br>
192.168.200.248 c16-serv3                 c16.openlab.infn.it<br>
192.168.200.247 c16-serv2                 c16.openlab.infn.it<br>
192.168.200.246 c16-serv1                 c16.openlab.infn.it<br>
192.168.200.243 c15-serv1                 c15-serv.openlab.infn.it<br>
<br>
</p></html>