Vmware Cloud Director &Microsoft Failover Cluster & Named Disks

To setting up Microsoft Failover Cluster there are some specifics requirements. (in our case related to SQL)
First of all allow all cluster nodes must access shared disk sending iSCSI commands.
Here they are complete requirements.

https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/8-0/setup-for-windows-server-failover-clustering/getting-started-with-wsfc/clustering-configuration.html

To allow this configuration on Vmware Cloud Director it is necessary to create Named Disk.
Here it is official documentation that confirm that this configuration is feasible

https://techdocs.broadcom.com/us/en/vmware-cis/cloud-director/vmware-cloud-director/10-5/map-for-vmware-cloud-director-tenant-portal-guide-10-5/using-named-disks-reviewing-storage-policies-and-migrating-storage-policy-entities-tenant.html

https://www.bdrsuite.com/blog/vmware-cloud-director-named-disks/

Finally here they are some screenshots:

ProxMox

We just released Proxmox VE 3.0. Its based on the great Debian 7.0 release (Wheezy) and introduces a great new feature set:
http://pve.proxmox.com/wiki/VM_Templates_and_Clones

Under the hood, many improvements and optimizations are done, most important is the replacement of Apache2 by our own event driven API server.
A big Thank-you to our active community for all feedback, testing, bug reporting and patch submissions.

Release notes
http://pve.proxmox.com/wiki/Roadmap#Proxmox_VE_3.0
Download
http://www.proxmox.com/downloads
Upgrade from any 2.3 to 3.0
http://pve.proxmox.com/wiki/Upgrade_from_2.3_to_3.0
Install Proxmox VE on Debian Wheezy
http://pve.proxmox.com/wiki/Install_Proxmox_VE_on_Debian_Wheezy

HyperV 2012 – Clustering Tutorial

Segnalo quest'interessante tutorial che mostra come creare un Cluster con HyperV 2012

Parte 1 - blogs.technet.com/.../step-by-step-building-a-free-hyper-v-server-2012-cluster-part-1-of-2.aspx

Parte 2 - blogs.technet.com/.../building-a-free-hyper-v-server-2012-cluster-part-2-of-2.aspx

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Manuale – Linux Enterprise Cluster

Book Description

The Linux Enterprise Cluster explains how to take a number of inexpensive computers with limited resources, place them on a normal computer network, and install free software so that the computers act together like one powerful server. This makes it possible to build a very inexpensive and reliable business system for a small business or a large corporation. The book includes information on how to build a high-availability server pair using the Heartbeat package, how to use the Linux Virtual Server load balancing software, how to configure a reliable printing system in a Linux cluster environment, and how to build a job scheduling system in Linux with no single point of failure. The book also includes information on high availability techniques that can be used with or without a cluster, making it helpful for System Administrators even if they are not building a cluster. Anyone interested in deploying Linux in an environment where low cost computer reliability is important will find this book useful.

The CD-ROM includes the Linux kernel, ldirectord software, the Mon monitoring package, the Ganglia package, OpenSSH, rsync, SystemImager, Heartbeat, and all the figures and illustrations used in the book.

Table of Contents

PART ONE: INTRODUCTION TO THE LINUX SERVER

Chapter 1. Starting the Services
Chapter 2. Handling the Packets
Chapter 3. Compiling the Kernel

PART TWO: HIGH AVAILABILITY LINUX

Chapter 4. Synchronizing Servers with Rsync and SSH
Chapter 5. Cloning Systems with SystemImager
Chapter 6. Heartbeat Introduction and Theory
Chapter 7. A Sample Heartbeat Configuration
Chapter 8. Heartbeat Resources and Maintenance
Chapter 9. Stonith and Ipfail

PART THREE: CLUSTER THEORY AND PRACTICE

Chapter 10. The Ideal Cluster
Chapter 11. The Linux Virtual Server Introduction and Theory
Chapter 12. The Linux Virtual Server Network Address Translation Cluster
Chapter 13. The Linux Virtual Server Direct Routing Cluster
Chapter 14. LVS and Netfilter
Chapter 15. The High Availability Cluster
Chapter 16. The Cluster File System

PART FOUR: MAINTENANCE AND MONITORING

Chapter 17. Simple Network Management Protocol and Mon
Chapter 18. Batch Job Scheduling with Ganglia
Chapter 19. Cluster Maintenance and Operation
Chapter 20. Architecture of the Linux Enterprise. A Pictography Glossary

APPENDICES

Appendix A. Downloading Software
Appendix B. Introduction to VI
Appendix C. Tcpdump
Appendix D. Adding Network Interface Cards to Your System
Appendix E. Compiling Heartbeat from CVS
Appendix F. Compiling and Installing the Perl SNMP Package
Appendix G. Sample Mon Init Script for Red Hat
Appendix H. Kernel Options

Book Details

Paperback: 464 pages

Publisher: No Starch Press (May 2005)

Language: English

ISBN-10: 1593270364

ISBN-13: 978-1593270360

http://www.wowebook.be/book/linux-enterprise-cluster/

HyperV - Installazione di un Failover cluster con iSCSI

Segno una guida interessante che mostra come installare un Failover Cluster HyperV utilizzando iSCSI ed usando Failover Cluster Manager with CSVs (Clustered Shared Volumes.)

Ecco gli articoli:

Part 1: iSCSI Setup

Part 2: Failover Clustering Setup

Part 3: Cluster Shared Volume

Part 4: Installing Microsoft Hyper-V

Manuale - Guide to Creating and Configuring a Server Cluster Under Windows Server 2003

Ecco alcuni tutorial che spiegano come creare un Cluster sotto Windows 2003 Server:

1) Guide to Creating and Configuring a Server Cluster Under Windows Server 2003
This guide provides step-by-step instructions for creating and configuring a typical single quorum device multi-node server cluster using a shared disk on servers running the Microsoft® Windows® Server 2003 Enterprise Edition and Windows Server 2003 Datacenter Edition operating systems.

http://www.microsoft.com/en-us/download/details.aspx?id=13705
2) Server Clusters: Cluster Configuration Best Practices for Windows Server 2003


Discusses cluster and application deployment, server load, and load balancing.


http://www.microsoft.com/en-us/download/details.aspx?id=8005

3) Using StarWind with MS Cluster on Windows Server 2003

This document gives users detailed step-by-step instructions on configuring StarWind for failover clusters with MS Windows Server 2003. Failover cluster configuration includes two (or more) server nodes that share an external storage. Based on iSCSI technology, StarWind software enables users to create an external storage in a Windows environment without implementation of expensive FC or external SCSI solutions. With StarWind, you can create a shared disk array on a host running Microsoft windows.

Click here to downloadUsing StarWind with MS Cluster on Win2003 Server

ProxMox - Ambiente di virtualizzazione HA senza San

E' stata rilasciata da pochi giorni la versione 2.1 di ProxMox.

Questa si tratta di un ambiente di virtualizzazione stile Vmware ed Hyper-V che sfrutta come base una distribuzione Linux customizzata.

Tale distribuzione da il meglio di se con due server con 2/3 schede di rete, di cui una cross tra i vari server.

Siccome ProxMox sfrutta LVM per la partizioni dove sono ospitate le macchine virtuali, questo permette di avere una soluzione di virtualizzazione High Avaibility o Cluster senza dover avere una SAN.

Insomma, una soluzione veramente all'avanguardia.

Mi riservo di fare altri post in merito per maggiori dettagli e test sul campo.

http://pve.proxmox.com/wiki/Proxmox_VE_News#Proxmox_VE_2.0_final_release.21%22%20id=%22Proxmox_VE_2.0_final_release.21

Di seguito invece i costi di supporto:

https://shop.maurer-it.com/cart.php

[update 23 Maggio 2012]

LVM non fa mirror, ma semplicemente non è altro che un gestore logico di volumi.

In realtà per sincronizzare lo storage si deve utilizzare un demone che si chiama DRBD.

 

Si puà leggere alcune guide su proxmox qui

 

http://pve.proxmox.com/wiki/DRBD

e qui

 

http://pve.proxmox.com/wiki/Two-Node_High_Availability_Cluster

Microsoft-HyperV-Server-2008-R2-Failover-Cluster

Ecco un interessante tutorial trovato su internet che mostra come procedere, con Hyper-V, nella creazione di un cluster con due server e una SAN.

http://www.sysadmin.it/Risorse/GuideeArticoli/tabid/63/articleType/ArticleView/articleId/16120/language/it-IT/Microsoft-HyperV-Server-2008-R2-Failover-Cluster.aspx#.T2PM3tWJJ-o

Linux - HA-Cluster di DC con Samba e LDAP - Parte 3

Installazione di LDAP

I source si trova in:

For x86 : http://anorien.warwick.ac.uk/mirrors/buchan/rhel4/openldap/

For x86-64: http://anorien.warwick.ac.uk/mirrors/buchan/rhel4-x86_64/openldap/

Adesso possiamo installare l’ultima versione di ldap (copiandola), da notare che è sempre buona norma disinstallare la vecchia versione e subito dopo installare la nuova:

http://www.openldap.org/software/download/

Step 1

Estrarre i file in /programs/openldap/release

tar zxvf openldap-2.3.33.tgz

cd openldap-2.3.33

Step 2

Compiliamo il tutto

./configure --prefix=/usr/local --enable-slapd --enable-syslog --with-cyrus-sasl=yes --enable-dynamic --enable-rewrite --disable-ipv6 --disable-shell --disable-sql --with-threads --enable-modules --enable-backends=mod --enable-overlays=mod --with-tls --enable-wrapper

Se vi sono errori di dipendenze vanno risolti

Se invece appare l’errore seguente:

configure: error: could not locate libtool ltdl.h

Potrebbe essere necessario eseguire la seguente procedura:

[root@node1 openldap-2.3.33]# cd /usr/share/libtool/libltdl

[root@node1 libltdl]# ./configure

[root@node1 libltdl]# make

[root@node1 libltdl]# make install

Linux - HA-Cluster di DC con Samba e LDAP - Parte 2

Ovviamente dovranno essere modificati alcuni parametri in base alle proprie necessità:

Server primario

mkdir /data

vim /etc/samba/smb.conf 

# # Primary Domain Controller smb.conf

# # Global parameters
[global]
unix charset = LOCALE
workgroup = DDESIGN
netbios name = node1
#passdb backend = ldapsam:ldap://127.0.0.1
#passdb backend = ldapsam:"ldap://192.168.0.2 ldap://192.168.0.3"
passdb backend =ldapsam:"ldap://node1.differentialdesign.org ldap://node2.differentialdesign.org"
username map = /etc/samba/smbusers
log level = 1
syslog = 0
log file = /var/log/samba/%m
max log size = 0
name resolve order = wins bcast hosts
time server = Yes
printcap name = CUPS
add user script = /opt/IDEALX/sbin/smbldap-useradd -m '%u'
delete user script = /opt/IDEALX/sbin/smbldap-userdel '%u'
add group script = /opt/IDEALX/sbin/smbldap-groupadd -p '%g'
delete group script = /opt/IDEALX/sbin/smbldap-groupdel '%g'
add user to group script = /opt/IDEALX/sbin/smbldap-groupmod -m '%g' '%u'
delete user from group script = /opt/IDEALX/sbin/smbldap-groupmod -x '%g' '%u'
set primary group script = /opt/IDEALX/sbin/smbldap-usermod -g '%g' '%u'
add machine script = /opt/IDEALX/sbin/smbldap-useradd -w '%u'
shutdown script = /var/lib/samba/scripts/shutdown.sh
abort shutdown script = /sbin/shutdown -c
logon script = %u.bat
#logon path = \\192.168.0.4\profiles\%u
logon path = \\nodes.differentialdesign.org\profiles\%u
logon drive = H:
domain logons = Yes
domain master = Yes
wins support = Yes
# peformance optimization all users stored in ldap
ldapsam:trusted = yes
ldap suffix = dc=differentialdesign,dc=org
ldap machine suffix = ou=Computers,ou=Users
ldap user suffix = ou=People,ou=Users
ldap group suffix = ou=Groups
ldap idmap suffix = ou=Idmap
ldap admin dn = cn=sambaadmin,dc=differentialdesign,dc=org
idmap backend = ldap://127.0.0.1
idmap uid = 10000-20000
idmap gid = 10000-20000
printer admin = root
printing = cups

Linux - HA-Cluster di DC con Samba e LDAP - Parte 1

Si tratta di una soluzione che permette di settare una soluzione "Fault Tolerance" del seguente tipo:

- Primary Domain Controller

- Backup Domain Controller

Un controller di dominio master, che fornisce l'autenticazione attraverso l'uso di LDAP

Un controller di dominio slave che può bilanciare il carico delle richieste di accesso client che forniscono anche la ridondanza attraverso l'uso di un database di replica LDAP. 

si ipotizza di avere due server con due schede di rete

Step 1 

Installare la stessa versione di samba su entrambi i server scaricandola dal seguente link:

http://us4.samba.org/samba/ftp/samba-latest.tar.gz 

wget http://us4.samba.org/samba/ftp/samba-latest.tar.gz

tar zxvf samba-latest.tar.gz

Step 2  

Linux - Replicated Failover Domain Controller and file server using LDAP

Ho trovato su un sito web come implementare una soluzione Cluster - HA con Ldap, samba e DNS.

Copio ed incollo l'articolo e poi incomincio a buttare giu' una guida passo passo di implementazione, che testerò strada facendo.

https://wiki.samba.org/index.php/Replicated_Failover_Domain_Controller_and_file_server_using_LDAP

Linux - HA (High Availability) su Centos - P. 3 - Configuriamo DRBD per il Cluster

1) Supponiamo di avere installato DRBD e questi è funzionante su entrmabi i server

2) [root@www1 ~]# /etc/rc.d/init.d/heartbeat stop

Stopping High-Availability services:

[  OK  ]

3) [root@www1 ~]# cd /var/lib/heartbeat/crm