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| (No se muestran 5 ediciones intermedias del mismo usuario) | |||
| Línea 1: | Línea 1: | ||
== Creación de un clúster Pacemaker == | == Creación de un clúster Pacemaker ( EN DESARROLLO) == | ||
=== Introducción === | === Introducción === | ||
| Línea 17: | Línea 17: | ||
* '''Servidor SAN''' | * '''Servidor SAN''' | ||
** Icecube — <code>192.168. | ** Icecube — <code>192.168.1.80</code> | ||
* '''Nodos Pacemaker''' | * '''Nodos Pacemaker''' | ||
** Nodo1 — <code>192.168. | ** Nodo1 — <code>192.168.1.81</code> | ||
** Nodo2 — <code>192.168. | ** Nodo2 — <code>192.168.1.82</code> | ||
--- | --- | ||
| Línea 36: | Línea 36: | ||
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
[root@icecube ~]# subscription-manager register | |||
Registering to: subscription.rhsm.redhat.com:443/subscription | |||
targetcli | Username: jagfloriano | ||
Password: | |||
The system has been registered with ID: dddb6e1e-049a-4ea2-8943-403ec63bb06f | |||
The registered system name is: icecube | |||
</syntaxhighlight> | |||
<syntaxhighlight lang="bash"> | |||
[root@icecube ~]# subscription-manager repos --enable codeready-builder-for-rhel-9-$(arch)-rpms | |||
Repository 'codeready-builder-for-rhel-9-x86_64-rpms' is enabled for this system. | |||
[root@icecube ~]# dnf install \ | |||
https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm | |||
Updating Subscription Management repositories. | |||
Red Hat CodeReady Linux Builder for RHEL 9 x86_64 (RPMs) 24 MB/s | 15 MB 00:00 | |||
epel-release-latest-9.noarch.rpm 41 kB/s | 19 kB 00:00 | |||
Dependencies resolved. | |||
========================================================================================================================================================================================================================================================================= | |||
Package Architecture Version Repository Size | |||
========================================================================================================================================================================================================================================================================= | |||
Installing: | |||
epel-release noarch 9-10.el9 @commandline 19 k | |||
Transaction Summary | |||
========================================================================================================================================================================================================================================================================= | |||
Install 1 Package | |||
Total size: 19 k | |||
Installed size: 26 k | |||
Is this ok [y/N]: y | |||
Downloading Packages: | |||
Running transaction check | |||
Transaction check succeeded. | |||
Running transaction test | |||
Transaction test succeeded. | |||
Running transaction | |||
Preparing : 1/1 | |||
Installing : epel-release-9-10.el9.noarch 1/1 | |||
Running scriptlet: epel-release-9-10.el9.noarch 1/1 | |||
Many EPEL packages require the CodeReady Builder (CRB) repository. | |||
It is recommended that you run /usr/bin/crb enable to enable the CRB repository. | |||
Verifying : epel-release-9-10.el9.noarch 1/1 | |||
Installed products updated. | |||
Installed: | |||
epel-release-9-10.el9.noarch | |||
Complete! | |||
</syntaxhighlight> | |||
<syntaxhighlight lang="bash"> | |||
[root@icecube ~]# dnf --enablerepo=epel* install targetcli | |||
Updating Subscription Management repositories. | |||
Last metadata expiration check: 0:02:26 ago on Fri 02 Jan 2026 09:50:24 PM CET. | |||
Dependencies resolved. | |||
========================================================================================================================================================================================================================================================================= | |||
Package Architecture Version Repository Size | |||
========================================================================================================================================================================================================================================================================= | |||
Installing: | |||
targetcli noarch 2.1.57-2.el9 rhel-9-for-x86_64-appstream-rpms 79 k | |||
Installing dependencies: | |||
python3-configshell noarch 1:1.1.30-1.el9 rhel-9-for-x86_64-baseos-rpms 76 k | |||
python3-kmod x86_64 0.9-32.el9 rhel-9-for-x86_64-baseos-rpms 88 k | |||
python3-pyparsing noarch 2.4.7-9.el9 rhel-9-for-x86_64-baseos-rpms 154 k | |||
python3-rtslib noarch 2.1.76-1.el9 rhel-9-for-x86_64-appstream-rpms 104 k | |||
python3-urwid x86_64 2.1.2-4.el9 rhel-9-for-x86_64-baseos-rpms 842 k | |||
target-restore noarch 2.1.76-1.el9 rhel-9-for-x86_64-appstream-rpms 16 k | |||
Transaction Summary | |||
========================================================================================================================================================================================================================================================================= | |||
Install 7 Packages | |||
Total download size: 1.3 M | |||
Installed size: 5.0 M | |||
Is this ok [y/N]: y | |||
Downloading Packages: | |||
(1/7): python3-pyparsing-2.4.7-9.el9.noarch.rpm 1.0 MB/s | 154 kB 00:00 | |||
(2/7): python3-kmod-0.9-32.el9.x86_64.rpm 347 kB/s | 88 kB 00:00 | |||
(3/7): python3-configshell-1.1.30-1.el9.noarch.rpm 683 kB/s | 76 kB 00:00 | |||
(4/7): target-restore-2.1.76-1.el9.noarch.rpm 145 kB/s | 16 kB 00:00 | |||
(5/7): python3-rtslib-2.1.76-1.el9.noarch.rpm 900 kB/s | 104 kB 00:00 | |||
(6/7): targetcli-2.1.57-2.el9.noarch.rpm 677 kB/s | 79 kB 00:00 | |||
(7/7): python3-urwid-2.1.2-4.el9.x86_64.rpm 318 kB/s | 842 kB 00:02 | |||
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | |||
Total 513 kB/s | 1.3 MB 00:02 | |||
Red Hat Enterprise Linux 9 for x86_64 - BaseOS (RPMs) 2.7 MB/s | 3.6 kB 00:00 | |||
Importing GPG key 0xFD431D51: | |||
Userid : "Red Hat, Inc. (release key 2) <security@redhat.com>" | |||
Fingerprint: 567E 347A D004 4ADE 55BA 8A5F 199E 2F91 FD43 1D51 | |||
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release | |||
Is this ok [y/N]: y | |||
Key imported successfully | |||
Importing GPG key 0x5A6340B3: | |||
Userid : "Red Hat, Inc. (auxiliary key 3) <security@redhat.com>" | |||
Fingerprint: 7E46 2425 8C40 6535 D56D 6F13 5054 E4A4 5A63 40B3 | |||
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release | |||
Is this ok [y/N]: y | |||
Key imported successfully | |||
Running transaction check | |||
Transaction check succeeded. | |||
Running transaction test | |||
Transaction test succeeded. | |||
Running transaction | |||
Preparing : 1/1 | |||
Installing : python3-urwid-2.1.2-4.el9.x86_64 1/7 | |||
Installing : python3-pyparsing-2.4.7-9.el9.noarch 2/7 | |||
Installing : python3-configshell-1:1.1.30-1.el9.noarch 3/7 | |||
Installing : python3-kmod-0.9-32.el9.x86_64 4/7 | |||
Installing : python3-rtslib-2.1.76-1.el9.noarch 5/7 | |||
Installing : target-restore-2.1.76-1.el9.noarch 6/7 | |||
Running scriptlet: target-restore-2.1.76-1.el9.noarch 6/7 | |||
Installing : targetcli-2.1.57-2.el9.noarch 7/7 | |||
Running scriptlet: targetcli-2.1.57-2.el9.noarch 7/7 | |||
Verifying : python3-kmod-0.9-32.el9.x86_64 1/7 | |||
Verifying : python3-pyparsing-2.4.7-9.el9.noarch 2/7 | |||
Verifying : python3-urwid-2.1.2-4.el9.x86_64 3/7 | |||
Verifying : python3-configshell-1:1.1.30-1.el9.noarch 4/7 | |||
Verifying : target-restore-2.1.76-1.el9.noarch 5/7 | |||
Verifying : python3-rtslib-2.1.76-1.el9.noarch 6/7 | |||
Verifying : targetcli-2.1.57-2.el9.noarch 7/7 | |||
Installed products updated. | |||
Installed: | |||
python3-configshell-1:1.1.30-1.el9.noarch python3-kmod-0.9-32.el9.x86_64 python3-pyparsing-2.4.7-9.el9.noarch python3-rtslib-2.1.76-1.el9.noarch python3-urwid-2.1.2-4.el9.x86_64 target-restore-2.1.76-1.el9.noarch targetcli-2.1.57-2.el9.noarch | |||
Complete! | |||
</syntaxhighlight> | |||
<syntaxhighlight lang="bash"> | |||
</syntaxhighlight> | </syntaxhighlight> | ||
==== Configuración del iSCSI Target (targetcli) ==== | ==== Configuración del iSCSI Target (targetcli) ==== | ||
| Línea 216: | Línea 350: | ||
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
[root@nodo1 ~]# dnf -y install iscsi-initiator-utils | |||
iscsi-initiator-utils | Updating Subscription Management repositories. | ||
Red Hat Enterprise Linux 9 for x86_64 - AppStream (RPMs) 43 MB/s | 79 MB 00:01 | |||
Red Hat CodeReady Linux Builder for RHEL 9 x86_64 (RPMs) 19 MB/s | 15 MB 00:00 | |||
Red Hat Enterprise Linux 9 for x86_64 - BaseOS (RPMs) 45 MB/s | 95 MB 00:02 | |||
Package iscsi-initiator-utils-6.2.1.9-1.gita65a472.el9.x86_64 is already installed. | |||
Dependencies resolved. | |||
================================================================================================================================================================================================================================================================================================ | |||
Package Architecture Version Repository Size | |||
================================================================================================================================================================================================================================================================================================ | |||
Upgrading: | |||
iscsi-initiator-utils x86_64 6.2.1.11-0.git4b3e853.el9 rhel-9-for-x86_64-baseos-rpms 392 k | |||
iscsi-initiator-utils-iscsiuio x86_64 6.2.1.11-0.git4b3e853.el9 rhel-9-for-x86_64-baseos-rpms 81 k | |||
Transaction Summary | |||
================================================================================================================================================================================================================================================================================================ | |||
Upgrade 2 Packages | |||
Total download size: 473 k | |||
Downloading Packages: | |||
(1/2): iscsi-initiator-utils-6.2.1.11-0.git4b3e853.el9.x86_64.rpm 1.6 MB/s | 392 kB 00:00 | |||
(2/2): iscsi-initiator-utils-iscsiuio-6.2.1.11-0.git4b3e853.el9.x86_64.rpm 330 kB/s | 81 kB 00:00 | |||
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | |||
Total 1.9 MB/s | 473 kB 00:00 | |||
Red Hat Enterprise Linux 9 for x86_64 - BaseOS (RPMs) 3.1 MB/s | 3.6 kB 00:00 | |||
Importing GPG key 0xFD431D51: | |||
Userid : "Red Hat, Inc. (release key 2) <security@redhat.com>" | |||
Fingerprint: 567E 347A D004 4ADE 55BA 8A5F 199E 2F91 FD43 1D51 | |||
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release | |||
Key imported successfully | |||
Importing GPG key 0x5A6340B3: | |||
Userid : "Red Hat, Inc. (auxiliary key 3) <security@redhat.com>" | |||
Fingerprint: 7E46 2425 8C40 6535 D56D 6F13 5054 E4A4 5A63 40B3 | |||
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release | |||
Key imported successfully | |||
Running transaction check | |||
Transaction check succeeded. | |||
Running transaction test | |||
Transaction test succeeded. | |||
Running transaction | |||
Preparing : 1/1 | |||
Upgrading : iscsi-initiator-utils-iscsiuio-6.2.1.11-0.git4b3e853.el9.x86_64 1/4 | |||
Running scriptlet: iscsi-initiator-utils-iscsiuio-6.2.1.11-0.git4b3e853.el9.x86_64 1/4 | |||
Upgrading : iscsi-initiator-utils-6.2.1.11-0.git4b3e853.el9.x86_64 2/4 | |||
Running scriptlet: iscsi-initiator-utils-6.2.1.11-0.git4b3e853.el9.x86_64 2/4 | |||
Running scriptlet: iscsi-initiator-utils-6.2.1.9-1.gita65a472.el9.x86_64 3/4 | |||
Cleanup : iscsi-initiator-utils-6.2.1.9-1.gita65a472.el9.x86_64 3/4 | |||
Running scriptlet: iscsi-initiator-utils-6.2.1.9-1.gita65a472.el9.x86_64 3/4 | |||
Running scriptlet: iscsi-initiator-utils-iscsiuio-6.2.1.9-1.gita65a472.el9.x86_64 4/4 | |||
Cleanup : iscsi-initiator-utils-iscsiuio-6.2.1.9-1.gita65a472.el9.x86_64 4/4 | |||
Running scriptlet: iscsi-initiator-utils-iscsiuio-6.2.1.9-1.gita65a472.el9.x86_64 4/4 | |||
Verifying : iscsi-initiator-utils-6.2.1.11-0.git4b3e853.el9.x86_64 1/4 | |||
Verifying : iscsi-initiator-utils-6.2.1.9-1.gita65a472.el9.x86_64 2/4 | |||
Verifying : iscsi-initiator-utils-iscsiuio-6.2.1.11-0.git4b3e853.el9.x86_64 3/4 | |||
Verifying : iscsi-initiator-utils-iscsiuio-6.2.1.9-1.gita65a472.el9.x86_64 4/4 | |||
Installed products updated. | |||
Upgraded: | |||
iscsi-initiator-utils-6.2.1.11-0.git4b3e853.el9.x86_64 iscsi-initiator-utils-iscsiuio-6.2.1.11-0.git4b3e853.el9.x86_64 | |||
Complete! | |||
</syntaxhighlight> | </syntaxhighlight> | ||
Revisión actual - 21:16 2 ene 2026
Creación de un clúster Pacemaker ( EN DESARROLLO)[editar]
Introducción[editar]
En este laboratorio se configura un clúster Pacemaker utilizando almacenamiento compartido vía iSCSI. Para ello se emplean un mínimo de tres máquinas:
- Dos nodos que formarán el clúster Pacemaker
- Una máquina adicional que actuará como servidor de almacenamiento SAN
El objetivo es simular el uso de discos compartidos de una cabina de almacenamiento en una infraestructura real.
---
Topología del laboratorio[editar]
Máquinas[editar]
- Servidor SAN
- Icecube —
192.168.1.80
- Icecube —
- Nodos Pacemaker
- Nodo1 —
192.168.1.81 - Nodo2 —
192.168.1.82
- Nodo1 —
---
Configuración del almacenamiento SAN[editar]
Para simular una cabina de almacenamiento se compartirá un disco mediante iSCSI hacia ambos nodos del clúster Pacemaker.
---
Instalación de paquetes requeridos[editar]
En el servidor SAN:
[root@icecube ~]# subscription-manager register
Registering to: subscription.rhsm.redhat.com:443/subscription
Username: jagfloriano
Password:
The system has been registered with ID: dddb6e1e-049a-4ea2-8943-403ec63bb06f
The registered system name is: icecube
[root@icecube ~]# subscription-manager repos --enable codeready-builder-for-rhel-9-$(arch)-rpms
Repository 'codeready-builder-for-rhel-9-x86_64-rpms' is enabled for this system.
[root@icecube ~]# dnf install \
https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm
Updating Subscription Management repositories.
Red Hat CodeReady Linux Builder for RHEL 9 x86_64 (RPMs) 24 MB/s | 15 MB 00:00
epel-release-latest-9.noarch.rpm 41 kB/s | 19 kB 00:00
Dependencies resolved.
=========================================================================================================================================================================================================================================================================
Package Architecture Version Repository Size
=========================================================================================================================================================================================================================================================================
Installing:
epel-release noarch 9-10.el9 @commandline 19 k
Transaction Summary
=========================================================================================================================================================================================================================================================================
Install 1 Package
Total size: 19 k
Installed size: 26 k
Is this ok [y/N]: y
Downloading Packages:
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Installing : epel-release-9-10.el9.noarch 1/1
Running scriptlet: epel-release-9-10.el9.noarch 1/1
Many EPEL packages require the CodeReady Builder (CRB) repository.
It is recommended that you run /usr/bin/crb enable to enable the CRB repository.
Verifying : epel-release-9-10.el9.noarch 1/1
Installed products updated.
Installed:
epel-release-9-10.el9.noarch
Complete!
[root@icecube ~]# dnf --enablerepo=epel* install targetcli
Updating Subscription Management repositories.
Last metadata expiration check: 0:02:26 ago on Fri 02 Jan 2026 09:50:24 PM CET.
Dependencies resolved.
=========================================================================================================================================================================================================================================================================
Package Architecture Version Repository Size
=========================================================================================================================================================================================================================================================================
Installing:
targetcli noarch 2.1.57-2.el9 rhel-9-for-x86_64-appstream-rpms 79 k
Installing dependencies:
python3-configshell noarch 1:1.1.30-1.el9 rhel-9-for-x86_64-baseos-rpms 76 k
python3-kmod x86_64 0.9-32.el9 rhel-9-for-x86_64-baseos-rpms 88 k
python3-pyparsing noarch 2.4.7-9.el9 rhel-9-for-x86_64-baseos-rpms 154 k
python3-rtslib noarch 2.1.76-1.el9 rhel-9-for-x86_64-appstream-rpms 104 k
python3-urwid x86_64 2.1.2-4.el9 rhel-9-for-x86_64-baseos-rpms 842 k
target-restore noarch 2.1.76-1.el9 rhel-9-for-x86_64-appstream-rpms 16 k
Transaction Summary
=========================================================================================================================================================================================================================================================================
Install 7 Packages
Total download size: 1.3 M
Installed size: 5.0 M
Is this ok [y/N]: y
Downloading Packages:
(1/7): python3-pyparsing-2.4.7-9.el9.noarch.rpm 1.0 MB/s | 154 kB 00:00
(2/7): python3-kmod-0.9-32.el9.x86_64.rpm 347 kB/s | 88 kB 00:00
(3/7): python3-configshell-1.1.30-1.el9.noarch.rpm 683 kB/s | 76 kB 00:00
(4/7): target-restore-2.1.76-1.el9.noarch.rpm 145 kB/s | 16 kB 00:00
(5/7): python3-rtslib-2.1.76-1.el9.noarch.rpm 900 kB/s | 104 kB 00:00
(6/7): targetcli-2.1.57-2.el9.noarch.rpm 677 kB/s | 79 kB 00:00
(7/7): python3-urwid-2.1.2-4.el9.x86_64.rpm 318 kB/s | 842 kB 00:02
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total 513 kB/s | 1.3 MB 00:02
Red Hat Enterprise Linux 9 for x86_64 - BaseOS (RPMs) 2.7 MB/s | 3.6 kB 00:00
Importing GPG key 0xFD431D51:
Userid : "Red Hat, Inc. (release key 2) <security@redhat.com>"
Fingerprint: 567E 347A D004 4ADE 55BA 8A5F 199E 2F91 FD43 1D51
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
Is this ok [y/N]: y
Key imported successfully
Importing GPG key 0x5A6340B3:
Userid : "Red Hat, Inc. (auxiliary key 3) <security@redhat.com>"
Fingerprint: 7E46 2425 8C40 6535 D56D 6F13 5054 E4A4 5A63 40B3
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
Is this ok [y/N]: y
Key imported successfully
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Installing : python3-urwid-2.1.2-4.el9.x86_64 1/7
Installing : python3-pyparsing-2.4.7-9.el9.noarch 2/7
Installing : python3-configshell-1:1.1.30-1.el9.noarch 3/7
Installing : python3-kmod-0.9-32.el9.x86_64 4/7
Installing : python3-rtslib-2.1.76-1.el9.noarch 5/7
Installing : target-restore-2.1.76-1.el9.noarch 6/7
Running scriptlet: target-restore-2.1.76-1.el9.noarch 6/7
Installing : targetcli-2.1.57-2.el9.noarch 7/7
Running scriptlet: targetcli-2.1.57-2.el9.noarch 7/7
Verifying : python3-kmod-0.9-32.el9.x86_64 1/7
Verifying : python3-pyparsing-2.4.7-9.el9.noarch 2/7
Verifying : python3-urwid-2.1.2-4.el9.x86_64 3/7
Verifying : python3-configshell-1:1.1.30-1.el9.noarch 4/7
Verifying : target-restore-2.1.76-1.el9.noarch 5/7
Verifying : python3-rtslib-2.1.76-1.el9.noarch 6/7
Verifying : targetcli-2.1.57-2.el9.noarch 7/7
Installed products updated.
Installed:
python3-configshell-1:1.1.30-1.el9.noarch python3-kmod-0.9-32.el9.x86_64 python3-pyparsing-2.4.7-9.el9.noarch python3-rtslib-2.1.76-1.el9.noarch python3-urwid-2.1.2-4.el9.x86_64 target-restore-2.1.76-1.el9.noarch targetcli-2.1.57-2.el9.noarch
Complete!
Configuración del iSCSI Target (targetcli)[editar]
Acceder a la consola de configuración:
[root@icecube ~]# targetcli
Warning: Could not load preferences file /root/.targetcli/prefs.bin.
targetcli shell version 2.1.53
Copyright 2011-2013 by Datera, Inc and others.
For help on commands, type 'help'.
Crear el backstore y el target iSCSI:
/> cd backstores/fileio
/backstores/fileio> create disk01 /var/lib/iscsi_disks/disk01.img 8G
Created fileio disk01 with size 8589934592
/backstores/fileio> cd /iscsi
/iscsi> create iqn.2027-04.icecube:storage.target00
Created target iqn.2027-04.icecube:storage.target00.
Created TPG 1.
Global pref auto_add_default_portal=true
Created default portal listening on all IPs (0.0.0.0), port 3260.
Crear el LUN y asociarlo al target:
/iscsi> cd iqn.2027-04.icecube:storage.target00/tpg1/luns
/iscsi/iqn.20...t00/tpg1/luns> create /backstores/fileio/disk01
Created LUN 0.
Configurar ACLs y autenticación CHAP:
/iscsi/iqn.20...t00/tpg1/luns> cd ../acls
/iscsi/iqn.20...t00/tpg1/acls> create iqn.2027-04.icecube:www.icecube
Created Node ACL for iqn.2027-04.icecube:www.icecube
Created mapped LUN 0.
/iscsi/iqn.20...t00/tpg1/acls> cd iqn.2027-04.icecube:www.icecube
/iscsi/iqn.20...e:www.icecube> set auth userid=bonzo
Parameter userid is now 'bonzo'.
/iscsi/iqn.20...e:www.icecube> set auth password=PASSWORD2020
Parameter password is now 'PASSWORD2020'.
Salir y guardar la configuración:
/iscsi/iqn.20...e:www.icecube> exit
Global pref auto_save_on_exit=true
Configuration saved to /etc/target/saveconfig.json
---
Comprobación del servicio iSCSI[editar]
Verificar que el puerto iSCSI está en escucha:
[root@icecube ~]# ss -napt | grep 3260
LISTEN 0 256 *:3260 *:*
[root@icecube ~]#
[root@icecube ~]# firewall-cmd --add-service=iscsi-target --permanent
success
[root@icecube ~]# firewall-cmd --reload
success
---
Configuración alternativa del Target (tgt)[editar]
Ajustar contextos SELinux:
[root@icecube ~]# chcon -R -t tgtd_var_lib_t /var/lib/iscsi_disks
[root@icecube ~]# semanage fcontext -a -t tgtd_var_lib_t /var/lib/iscsi_disks
Configurar el archivo /etc/tgt/targets.conf:
[root@icecube ~]# cat /etc/tgt/targets.conf |grep -v ^#
default-driver iscsi
<target iqn.2027-04.icecube:storage.target00>
backing-store /var/lib/iscsi_disks/disk01.img
initiator-address 192.168.0.81
initiator-address 192.168.0.82
incominguser bonzo PASSWORD2020
</target>
Iniciar y habilitar el servicio:
[root@icecube ~]# systemctl start tgtd
[root@icecube ~]# systemctl enable tgtd
Created symlink from /etc/systemd/system/multi-user.target.wants/tgtd.service to /usr/lib/systemd/system/tgtd.service.
[root@icecube ~]#
Verificación del target:
[root@icecube ~]# tgtadm --mode target --op show
Target 1: iqn.2027-04.icecube:storage.target00
System information:
Driver: iscsi
State: ready
I_T nexus information:
LUN information:
LUN: 0
Type: controller
SCSI ID: IET 00010000
SCSI SN: beaf10
Size: 0 MB, Block size: 1
Online: Yes
Removable media: No
Prevent removal: No
Readonly: No
SWP: No
Thin-provisioning: No
Backing store type: null
Backing store path: None
Backing store flags:
LUN: 1
Type: disk
SCSI ID: IET 00010001
SCSI SN: beaf11
Size: 8590 MB, Block size: 512
Online: Yes
Removable media: No
Prevent removal: No
Readonly: No
SWP: No
Thin-provisioning: No
Backing store type: rdwr
Backing store path: /var/lib/iscsi_disks/disk01.img
Backing store flags:
Account information:
bonzo
ACL information:
192.168.0.81
192.168.0.82
---
Configuración del iSCSI Initiator en los nodos[editar]
Los siguientes pasos deben ejecutarse en todos los nodos del clúster.
---
Instalación de paquetes[editar]
[root@nodo1 ~]# dnf -y install iscsi-initiator-utils
Updating Subscription Management repositories.
Red Hat Enterprise Linux 9 for x86_64 - AppStream (RPMs) 43 MB/s | 79 MB 00:01
Red Hat CodeReady Linux Builder for RHEL 9 x86_64 (RPMs) 19 MB/s | 15 MB 00:00
Red Hat Enterprise Linux 9 for x86_64 - BaseOS (RPMs) 45 MB/s | 95 MB 00:02
Package iscsi-initiator-utils-6.2.1.9-1.gita65a472.el9.x86_64 is already installed.
Dependencies resolved.
================================================================================================================================================================================================================================================================================================
Package Architecture Version Repository Size
================================================================================================================================================================================================================================================================================================
Upgrading:
iscsi-initiator-utils x86_64 6.2.1.11-0.git4b3e853.el9 rhel-9-for-x86_64-baseos-rpms 392 k
iscsi-initiator-utils-iscsiuio x86_64 6.2.1.11-0.git4b3e853.el9 rhel-9-for-x86_64-baseos-rpms 81 k
Transaction Summary
================================================================================================================================================================================================================================================================================================
Upgrade 2 Packages
Total download size: 473 k
Downloading Packages:
(1/2): iscsi-initiator-utils-6.2.1.11-0.git4b3e853.el9.x86_64.rpm 1.6 MB/s | 392 kB 00:00
(2/2): iscsi-initiator-utils-iscsiuio-6.2.1.11-0.git4b3e853.el9.x86_64.rpm 330 kB/s | 81 kB 00:00
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total 1.9 MB/s | 473 kB 00:00
Red Hat Enterprise Linux 9 for x86_64 - BaseOS (RPMs) 3.1 MB/s | 3.6 kB 00:00
Importing GPG key 0xFD431D51:
Userid : "Red Hat, Inc. (release key 2) <security@redhat.com>"
Fingerprint: 567E 347A D004 4ADE 55BA 8A5F 199E 2F91 FD43 1D51
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
Key imported successfully
Importing GPG key 0x5A6340B3:
Userid : "Red Hat, Inc. (auxiliary key 3) <security@redhat.com>"
Fingerprint: 7E46 2425 8C40 6535 D56D 6F13 5054 E4A4 5A63 40B3
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
Key imported successfully
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Upgrading : iscsi-initiator-utils-iscsiuio-6.2.1.11-0.git4b3e853.el9.x86_64 1/4
Running scriptlet: iscsi-initiator-utils-iscsiuio-6.2.1.11-0.git4b3e853.el9.x86_64 1/4
Upgrading : iscsi-initiator-utils-6.2.1.11-0.git4b3e853.el9.x86_64 2/4
Running scriptlet: iscsi-initiator-utils-6.2.1.11-0.git4b3e853.el9.x86_64 2/4
Running scriptlet: iscsi-initiator-utils-6.2.1.9-1.gita65a472.el9.x86_64 3/4
Cleanup : iscsi-initiator-utils-6.2.1.9-1.gita65a472.el9.x86_64 3/4
Running scriptlet: iscsi-initiator-utils-6.2.1.9-1.gita65a472.el9.x86_64 3/4
Running scriptlet: iscsi-initiator-utils-iscsiuio-6.2.1.9-1.gita65a472.el9.x86_64 4/4
Cleanup : iscsi-initiator-utils-iscsiuio-6.2.1.9-1.gita65a472.el9.x86_64 4/4
Running scriptlet: iscsi-initiator-utils-iscsiuio-6.2.1.9-1.gita65a472.el9.x86_64 4/4
Verifying : iscsi-initiator-utils-6.2.1.11-0.git4b3e853.el9.x86_64 1/4
Verifying : iscsi-initiator-utils-6.2.1.9-1.gita65a472.el9.x86_64 2/4
Verifying : iscsi-initiator-utils-iscsiuio-6.2.1.11-0.git4b3e853.el9.x86_64 3/4
Verifying : iscsi-initiator-utils-iscsiuio-6.2.1.9-1.gita65a472.el9.x86_64 4/4
Installed products updated.
Upgraded:
iscsi-initiator-utils-6.2.1.11-0.git4b3e853.el9.x86_64 iscsi-initiator-utils-iscsiuio-6.2.1.11-0.git4b3e853.el9.x86_64
Complete!
---
Configuración del iniciador[editar]
Comprobar el IQN del iniciador:
[root@nodo1 ~]# cat /etc/iscsi/initiatorname.iscsi
InitiatorName=iqn.2027-04.icecube:www.icecube
Editar el archivo de configuración CHAP:
[root@nodo1 ~]# vim /etc/iscsi/iscsid.conf
Verificar parámetros de autenticación:
[root@nodo1 ~]# grep -i node.session.auth /etc/iscsi/iscsid.conf|grep -v ^#
node.session.auth.authmethod = CHAP
node.session.auth.username = bonzo
node.session.auth.password = PASSWORD2020
---
Descubrimiento y conexión al target[editar]
Descubrir targets disponibles:
[root@nodo1 ~]# iscsiadm -m discovery -t sendtargets -p 192.168.0.80
192.168.0.80:3260,1 iqn.2027-04.icecube:storage.target00
[root@nodo1 ~]# iscsiadm -m node -o show
# BEGIN RECORD 6.2.0.874-19
node.name = iqn.2027-04.icecube:storage.target00
node.tpgt = 1
node.startup = automatic
node.leading_login = No
iface.hwaddress = <empty>
iface.ipaddress = <empty>
iface.iscsi_ifacename = default
iface.net_ifacename = <empty>
iface.gateway = <empty>
iface.subnet_mask = <empty>
iface.transport_name = tcp
iface.initiatorname = <empty>
iface.state = <empty>
iface.vlan_id = 0
iface.vlan_priority = 0
iface.vlan_state = <empty>
iface.iface_num = 0
iface.mtu = 0
iface.port = 0
iface.bootproto = <empty>
iface.dhcp_alt_client_id_state = <empty>
iface.dhcp_alt_client_id = <empty>
iface.dhcp_dns = <empty>
iface.dhcp_learn_iqn = <empty>
iface.dhcp_req_vendor_id_state = <empty>
iface.dhcp_vendor_id_state = <empty>
iface.dhcp_vendor_id = <empty>
iface.dhcp_slp_da = <empty>
iface.fragmentation = <empty>
iface.gratuitous_arp = <empty>
iface.incoming_forwarding = <empty>
iface.tos_state = <empty>
iface.tos = 0
iface.ttl = 0
iface.delayed_ack = <empty>
iface.tcp_nagle = <empty>
iface.tcp_wsf_state = <empty>
iface.tcp_wsf = 0
iface.tcp_timer_scale = 0
iface.tcp_timestamp = <empty>
iface.redirect = <empty>
iface.def_task_mgmt_timeout = 0
iface.header_digest = <empty>
iface.data_digest = <empty>
iface.immediate_data = <empty>
iface.initial_r2t = <empty>
iface.data_seq_inorder = <empty>
iface.data_pdu_inorder = <empty>
iface.erl = 0
iface.max_receive_data_len = 0
iface.first_burst_len = 0
iface.max_outstanding_r2t = 0
iface.max_burst_len = 0
iface.chap_auth = <empty>
iface.bidi_chap = <empty>
iface.strict_login_compliance = <empty>
iface.discovery_auth = <empty>
iface.discovery_logout = <empty>
node.discovery_address = 192.168.0.80
node.discovery_port = 3260
node.discovery_type = send_targets
node.session.initial_cmdsn = 0
node.session.initial_login_retry_max = 8
node.session.xmit_thread_priority = -20
node.session.cmds_max = 128
node.session.queue_depth = 32
node.session.nr_sessions = 1
node.session.auth.authmethod = CHAP
node.session.auth.username = bonzo
node.session.auth.password = ********
node.session.auth.username_in = <empty>
node.session.auth.password_in = <empty>
node.session.auth.chap_algs = MD5
node.session.timeo.replacement_timeout = 120
node.session.err_timeo.abort_timeout = 15
node.session.err_timeo.lu_reset_timeout = 30
node.session.err_timeo.tgt_reset_timeout = 30
node.session.err_timeo.host_reset_timeout = 60
node.session.iscsi.FastAbort = Yes
node.session.iscsi.InitialR2T = No
node.session.iscsi.ImmediateData = Yes
node.session.iscsi.FirstBurstLength = 262144
node.session.iscsi.MaxBurstLength = 16776192
node.session.iscsi.DefaultTime2Retain = 0
node.session.iscsi.DefaultTime2Wait = 2
node.session.iscsi.MaxConnections = 1
node.session.iscsi.MaxOutstandingR2T = 1
node.session.iscsi.ERL = 0
node.session.scan = auto
node.conn[0].address = 192.168.0.80
node.conn[0].port = 3260
node.conn[0].startup = manual
node.conn[0].tcp.window_size = 524288
node.conn[0].tcp.type_of_service = 0
node.conn[0].timeo.logout_timeout = 15
node.conn[0].timeo.login_timeout = 15
node.conn[0].timeo.auth_timeout = 45
node.conn[0].timeo.noop_out_interval = 5
node.conn[0].timeo.noop_out_timeout = 5
node.conn[0].iscsi.MaxXmitDataSegmentLength = 0
node.conn[0].iscsi.MaxRecvDataSegmentLength = 262144
node.conn[0].iscsi.HeaderDigest = None
node.conn[0].iscsi.IFMarker = No
node.conn[0].iscsi.OFMarker = No
# END RECORD
Iniciar sesión:
[root@nodo1 ~]# iscsiadm -m node --login
Verificar la sesión activa:
[root@nodo1 ~]# iscsiadm -m discovery -t sendtargets -p 192.168.0.80
192.168.0.80:3260,1 iqn.2027-04.icecube:storage.target00
---
Verificación del disco compartido[editar]
Comprobar que el nuevo disco aparece en el sistema:
[root@nodo1 ~]# iscsiadm -m session -o show
tcp: [1] 192.168.0.80:3260,1 iqn.2027-04.icecube:storage.target00 (non-flash)
[root@nodo1 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 10.5G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 9.5G 0 part
├─centos-root 253:0 0 8.4G 0 lvm /
└─centos-swap 253:1 0 1G 0 lvm [SWAP]
sdb 8:16 0 8G 0 disk
sr0 11:0 1 1024M 0 rom
Inicializar el disco como volumen físico:
[root@nodo1 ~]# pvcreate /dev/sdb
Physical volume "/dev/sdb" successfully created.
---
Notas finales[editar]
- El disco iSCSI queda disponible para ser utilizado como recurso compartido en Pacemaker
- Todos los nodos deben ver el mismo dispositivo
- A partir de este punto se puede continuar con la configuración del clúster
