Mudanças entre as edições de "Minicluster:Rede"

Edição atual tal como às 02h16min de 19 de julho de 2017

Topologia da rede

                       X.X.X.X  192.168.0.100
 /\/\/\/\/\/\/\/\/\       /------\     
< rede.mat.ufrgs.br >----<  one   >   
 \/\/\/\/\/\/\/\/\/       \------/   /----[ cell108 ]  192.168.0.108
                             |      /
                         +--------+/------[ cell109 ]  192.168.0.109
                         [ SWITCH ]
                         [        ]-------[ cell110 ]  192.168.0.110
                         +--------+\
                                    \-----[ cell111 ]  192.168.0.111

vi /etc/hosts

127.0.0.1   localhost localhost.localdomain
::1         localhost6 localhost6.localdomain6

143.54.226.61  euler
143.54.226.62  turing
143.54.226.118 hunter   hunter.mat.ufrgs.br

192.168.0.100 cellautoenp7s4

192.168.0.108 cell108
192.168.0.109 cell109
192.168.0.110 cell110
192.168.0.111 cell111
 
192.168.0.112 cell112
192.168.0.113 cell113
192.168.0.114 cell114
192.168.0.115 cell115

192.168.0.116 cell116
192.168.0.117 cell117
192.168.0.118 cell118
192.168.0.119 cell119

192.168.0.120 cell120
192.168.0.121 cell121
192.168.0.122 cell122
192.168.0.123 cell123

ifconfig

• one

NIC      HWaddr             Hostname  inet addr:     Bcast:         Mask:         Link encap: inet6 addr:                 Scope:
enp0s25  18:A9:05:E8:AE:0B  one       143.54.226.116 143.54.227.255 255.255.254.0 Ethernet    fe80::f8b4:c258:f7e1:3939/64 Link
enp7s4   00:0A:5E:5C:2C:04            192.168.0.100  192.168.0.255  255.255.255.0 Ethernet

lo                                    127.0.0.1                     255.0.0.0     Local Loopback ::1/128                  Host
virbr0 ??????

Desativar a interfave virbr0

• Foi necessário desativar a bridge virbr0 usando o Network Manager (o DRBL tentava configurar nós para a bridge também).

A interface virbr0, ou "Virtual Bridge 0" é usada pelo NAT (Network Address Translation). Fornecida pela biblioteca libvirt e ambientes virtuais é algumas vezes usada para se conectar com redes externas.

• cell108

eth0 18:A9:05:E8:0E:B8 cell101       192.168.0.101  192.168.0.255  255.255.255.0 Ethernet    fe80::1aa9:5ff:fee8:eb8/64  Link
lo                                   127.0.0.1                     255.0.0.0     Local Loopback ::1/128                  Host

Trocar ip do mestre

[root@one] $ cd /etc/sysconfig/network-scripts/
[root@one] $ ls ifcfg*
ifcfg-enp0s25
ifcfg-enpPlaca
ifcfg-lo

[root@one] $ vi ifcfg-enpPlaca
...
IPADDR=192.168.0.100
PREFIX=24
GATEWAY=192.168.0.255
...
 

• http://www.cyberciti.biz/faq/rhel-centos-fedoracore-linux-network-card-configuration/

Patrimônio e MAC

Os números MAC serão usados no DRBL.

459708  18:A9:05:E8:ae:08  cell108  192.168.0.108
....09  18:A9:05:E8:0e:b2  cell109  192.168.0.109
....10  18:A9:05:E8:0e:ec  cell110            .. 
....11  18:A9:05:E8:9e:49  cell111            ..
....12  18:A9:05:E8:ae:64  cell112
....13  18:A9:05:E8:9e:f7  cell113
....14  18:A9:05:E8:ae:0c  cell114
....15  18:A9:05:E8:ae:7b  cell115
....16  18:A9:05:E8:ae:18  cell116
....17  18:A9:05:E8:1e:1c  cell117
....18  18:A9:05:E8:0e:b8  cell118  (teste inicial)
....19  18:A9:05:E8:9e:f0  cell119  (sata -> one)
....20  18:A9:05:E8:9e:f4  cell120
....21  18:A9:05:E8:9e:8e  cell121
....22  18:A9:05:E8:9e:ea  cell122
....23  18:A9:05:E8:9e:a9  cell123

459724  18:A9:05:E8:ae:0b  tri
459725  18:A9:05:E8:1e:16  one.matrix     143.54.226.166 
  --    00:06:4F:61:C4:5A  theone         192.168.0.100 (PLACA REDE)
  --    00:0a:5e:5c:2c:04                               (NOVA PLACA REDE)

461466  00:24:73:d7:a5:41  switch         192.168.0.50

Configurar servidor dhcp

• descrever ....

Parte do arquivo /etc/dhcp.conf deve ser configurada e parte será configurada pelo DRBL.

# Generated by DRBL. 
# Do NOT modify this file unless you know what you are doing!

default-lease-time			300;
max-lease-time				300;
option subnet-mask			255.255.255.0;
option domain-name-servers  		143.54.2.165,143.54.2.166;
option domain-name			"drbl.org";	
ddns-update-style                       none;
server-name 				drbl;

allow booting;
allow bootp;
    
option arch code 93 = unsigned integer 16;
option space pxelinux;
option pxelinux.magic      code 208 = string;
option pxelinux.configfile code 209 = text;
option pxelinux.pathprefix code 210 = text;
option pxelinux.reboottime code 211 = unsigned integer 32;

site-option-space "pxelinux";
if exists dhcp-parameter-request-list {
    # Always send the PXELINUX options (specified in hexadecimal)
    option dhcp-parameter-request-list = concat(option dhcp-parameter-request-list,d0,d1,d2,d3);
}

# (2) grub (drbl-gen-grub-efi-nb)
if option arch = 00:06 {
    filename "bootia32.efi";
} else if option arch = 00:07 {
    filename "bootx64.efi";
} else if option arch = 00:09 {
    # For iPXE uEFI client. Ref: http://ipxe.org/cfg/platform
    # Thanks to Danny Russ for providing this.
    filename "bootx64.efi";
} else {
    filename "pxelinux.0";
}
##
## A parte abaixo é feita pelo DRBL
##
##########################################
# The DRBL client class: PXE, Etherboot or DRBL client
class "DRBL-Client" {
  match if 
  (substring(option vendor-class-identifier, 0, 9) = "PXEClient") or
  (substring(option vendor-class-identifier, 0, 9) = "Etherboot") or
  (substring(option vendor-class-identifier, 0, 10) = "DRBLClient") ;
}

subnet 192.168.0.0 netmask 255.255.255.0 {
    option subnet-mask	255.255.255.0;
    option routers 192.168.0.100;
    next-server 192.168.0.100;

    host cellswitch {
        hardware ethernet  00:24:73:d7:a5:41;
        fixed-address 192.168.0.50;
        # BY DAGO
    }
    host cell108 {
        hardware ethernet  18:A9:05:E8:1E:16;
        fixed-address 192.168.0.108;
	# option host-name "cell108";
    }
    host cell109 {
      ...
    }
    host cell123 {
      ...
    }
}

Nova placa

• A placa de rede MAC 00:06:4F:61:C4:5A aparenta problemas (físicos, porém pode ser apenas configuração)
• Nova placa externa foi instalada MAC 00:0A:5E:5C:2C:04

Comando úteis:

• atualiza nomes e dados de placas (não fez diferença)

[user] update-pciids

• https://www.linuxquestions.org/questions/linux-networking-3/how-do-i-assign-switch-eth0-and-eth1-308008/
• http://writeonly.wordpress.com/2009/05/08/installing-a-reluctant-network-card-on-debian/