tag:blogger.com,1999:blog-30381248876245977172024-03-13T21:30:56.093+01:00ThinkBrickSysadmin tales...Riccardohttp://www.blogger.com/profile/13881495424455610941noreply@blogger.comBlogger16125tag:blogger.com,1999:blog-3038124887624597717.post-80888375667485748072017-05-09T17:38:00.003+02:002017-05-10T00:09:13.349+02:00Back up your Xenserver with Xenbackup-ng, now with Tag and vApp Support!It's time to release an update to xenbackup-ng script.
I added two new features:
Tag Support: you can tag your vm and backup them by selecting tags.
vApp Support: if you are used to group vm in vApps you can select vm to backup by vApp.
You can download xenbackup-ng from github: https://github.com/rbicelli/xenbackup-ng/archive/master.zip
Github project is here: https://Riccardohttp://www.blogger.com/profile/13881495424455610941noreply@blogger.com0tag:blogger.com,1999:blog-3038124887624597717.post-84048022236028197682016-02-03T11:42:00.001+01:002016-06-14T18:44:14.325+02:00pfSense on XenServer: enable VLAN Support for xn ethernet adapterI was migrating my PfSense boxes from vmware to xenserver and I was disappointed when trying to create a VLAN the XenServer xn interface wasn't listed as capable.
I lurked in forums in search for a solution and found that in stock BSD the xn interface is reported working fine with VLANs, even the vlanmtu is not reported as capable at driver level.
So my idea is to cheat pfsense and report xn Riccardohttp://www.blogger.com/profile/13881495424455610941noreply@blogger.com7tag:blogger.com,1999:blog-3038124887624597717.post-80709401967755877692016-01-26T11:34:00.000+01:002016-02-09T12:18:41.431+01:00Convert a Linux ESXi Virtual Machine to XenserverSince I had to migrate my hypervisor from vmware ESXi to Citrix Xenserver 6.5, I had to convert my Centos Linux 6.x Virtual Machines.
The main difference in Xenserver is that the Linux kernel is paravirtualized.
Tools for the trade:
- vmware vSphere Client
- Xencenter
- Very little Linux terminal skills :)
STEP 1
Optional: take a snapshot
Drop into vSphere Client and take a snapshot.
It isRiccardohttp://www.blogger.com/profile/13881495424455610941noreply@blogger.com0tag:blogger.com,1999:blog-3038124887624597717.post-4342231714064805162015-11-24T10:28:00.001+01:002015-11-25T20:59:32.930+01:00Get Host Power On working with Dell iDrac in Citrix XenServer 6.5After a couple days messing around in searching how to get my XenServer 6.5 Hosts powered on by iDRAC, here's my little howto:
Download and install Dell OpenManage Server Administrator Managed Node for XenServer6.5 , v8.1.1:From XenServer host console:cd /tmpwget http://downloads.dell.com/FOLDER02994001M/1/OM-SrvAdmin-Dell-Web-LX-8.1.1-1583.XenServer65_A00.isomount -o loop /tmp/Riccardohttp://www.blogger.com/profile/13881495424455610941noreply@blogger.com0tag:blogger.com,1999:blog-3038124887624597717.post-65363012073032647162015-11-11T11:33:00.002+01:002015-11-11T11:33:29.871+01:00Totaleapatia.it, e leviamo un po' di ruggineHo da poco terminato il restyling del sito dei miei amici Totale Apatia.
Realizzato in PHP su Framework Codeigniter 3.
Per la gestione del foglio di stile CSS mi sono imbattuto per la prima volta in SASS, un preprocessore per CSS: lo trovo molto versatile e potente e credo che lo userò presto nei miei progetti.
Non avendo a disposizione nessun database e dovendo effettuare pochi Riccardohttp://www.blogger.com/profile/13881495424455610941noreply@blogger.com0tag:blogger.com,1999:blog-3038124887624597717.post-33861544634483974592014-09-26T16:07:00.000+02:002017-07-21T14:23:25.098+02:00SCST iSCSI OCF Update ReleasedI've just released an update for my iSCSI SCST OCF Resource Agents.
This release improves reliability during migration under high IO pressure and solves problem of unmanaged/failed LUN resources issuing crm node standby/online commands.
Download is available from my Github account ...Riccardohttp://www.blogger.com/profile/13881495424455610941noreply@blogger.com1tag:blogger.com,1999:blog-3038124887624597717.post-1643949786529573282014-09-25T17:19:00.000+02:002015-01-15T12:32:09.342+01:00BTIER Resource Agent for PacemakerSince BTIER became stable for production environment I wanted it in my clustered SAN, so I wrote an OCF compliant resource agent for managing a BTIER device.
For now is very simple, In future I'm planning to add some other features.
CIB Notation looks like:
primitive BTIER_TIER1 ocf:brick:btier \
params tier_devices="/dev/sda:/dev/sdb" \
device_name="mybtierdev01"
op monitor Riccardohttp://www.blogger.com/profile/13881495424455610941noreply@blogger.com0tag:blogger.com,1999:blog-3038124887624597717.post-62192259818938643022013-03-14T23:30:00.002+01:002013-03-17T23:49:24.252+01:00SCST ocf Resource Agent Updated: SRPT (Infiniband) supportIt's time to update the SCST Pacemaker Resource Agents!
This release introduces some new features.
Infiniband support is added. Now is possible to add infiniband target and map LUNs to it. It is also possible to have, in the same resource a LUN mapped both to iSCSI and to Infiniband. ESXi is reported to behave fine with this setup.
Tests are welcome and appreciated.
Resource Agents can be Riccardohttp://www.blogger.com/profile/13881495424455610941noreply@blogger.com0tag:blogger.com,1999:blog-3038124887624597717.post-26867812815173418832012-05-07T18:27:00.003+02:002012-06-11T16:50:47.099+02:00Autenticazione Multi-Tenant Active Directory con DovecotNota: questo articolo è un'estensione di Mailbox Virtuali con Dovecot, Postfix e Active Directory
Se volessimo fare in modo che il nostro server di posta autentichi su diversi domini AD è necessario apportare qualche piccola modifica alla configurazione di Dovecot.
Prendiamo come esempio questa struttura:
Il dominio BRICK.LOCAL ha una relazione di Trust unidirezionale col dominio Riccardohttp://www.blogger.com/profile/13881495424455610941noreply@blogger.com0tag:blogger.com,1999:blog-3038124887624597717.post-27138501638732956992012-03-23T14:02:00.001+01:002017-10-02T16:00:21.837+02:00xenbackup-ng, for backing up your xenserver VMs with quiescent snapshotStarting from Filippo Zanardo's Xenbackup, I wrote a modified version of his scripts, now tested and running on Citrix Xenserver 5.6 fp1 and Citrix Xenserver 6.0.2.
The script has the purpose to backup a Citrix Xenserver Guests Virtual Machines and it can be configured for doing it in different ways.
Besides the Filippo's original version, I included some features:
Split Riccardohttp://www.blogger.com/profile/13881495424455610941noreply@blogger.com10tag:blogger.com,1999:blog-3038124887624597717.post-11907115460742439122012-03-16T20:41:00.000+01:002017-07-21T14:22:34.505+02:00SCST iSCSI Resource agents for pacemaker.
Inspired by Openfiler I built my own DIY Highly Available SAN using Pacemaker, DRBD, LVM and SCST.
My current setup is:
- Two servers running gentoo
- a DRBD device in single primary
- a floating IP address
- an iSCSI Target with one LUN pointing straight to the DRBD device (vdisk_fileio, nv_cache).
The cib looks like:
node isan01 \ attributes standby="off"node Riccardohttp://www.blogger.com/profile/13881495424455610941noreply@blogger.com4tag:blogger.com,1999:blog-3038124887624597717.post-54419010175919153282012-03-09T10:16:00.000+01:002012-03-20T14:27:40.887+01:00Esportare le unità a nastro via iSCSI con SCST, autoloader compresi!Nelle moderne sale server ci piace virtualizzare tutto. A volte anche il server che gestisce i backup. Quando facciamo backup su disco è facile, basta un NAS, ma quando dobbiamo farlo su nastro?
Va bene che vmware supporta il pass-through dei dispositivi SCSI, ma dato che ho un paio di storage iSCSI realizzati con Linux, perché non usarli anche per rendere disponibili nastri e autoloader, oltre Riccardohttp://www.blogger.com/profile/13881495424455610941noreply@blogger.com0tag:blogger.com,1999:blog-3038124887624597717.post-39257380150869572472011-10-28T09:55:00.003+02:002011-10-28T11:14:46.931+02:00Utilizzare mpop come connettore POP alternativo per ExchangeIl Connettore POP di SBS (o di Exchange) mi fa spesso dannare e talvolta il troubleshooting può essere lungo, creando fastidi all'utente.
Ci sono valide alternative commerciali al connettore POP3 di Microsoft, come ad esempio MAPILab POP3 Connector, GFI MailEssentials, ma prediligo le soluzioni aperte e gratuite.
Quindi, vagando per la rete in cerca di alternative più aperte e meno costose, mi Riccardohttp://www.blogger.com/profile/13881495424455610941noreply@blogger.com0tag:blogger.com,1999:blog-3038124887624597717.post-24536481698166302342011-06-23T16:36:00.000+02:002012-05-09T09:28:39.234+02:00Installazione di SOGo con Integrazione Active DirectoryHai un dominio Active Directory, non hai un sistema di gestione dalla posta elettronica e ne vorresti uno che ti permetta di condividere calendari e contatti con i tuoi colleghi senza dover accendere un mutuo per acquistare Exchange?
Vedremo ora tutto il processo di installazione e configurazione di SOGo con login degli utenti da Active Directory.
SOGo per funzionare ha bisogno di:
Un Database Riccardohttp://www.blogger.com/profile/13881495424455610941noreply@blogger.com0tag:blogger.com,1999:blog-3038124887624597717.post-14741301704763981212011-06-13T17:12:00.018+02:002012-05-08T12:29:12.926+02:00Mailbox Virtuali con Dovecot, Postfix e Active DirectorySeguendo questa piccola guida realizzeremo un sistema di posta basato su Dovecot e Postfix, su server Linux, con autenticazione e gestione delle informazioni utente tramite Active Directory.
Il prodotto finito sarà funzionante ma estremamente semplice: solo IMAP e SMTP, nessun filtraggio dei contenuti, nessuna implementazione di comunicazione sicura. Diciamo che sarà una buona base per Riccardohttp://www.blogger.com/profile/13881495424455610941noreply@blogger.com4tag:blogger.com,1999:blog-3038124887624597717.post-10097449999409895422011-05-26T12:11:00.001+02:002012-11-28T19:16:04.809+01:00Xenbackup-ng, backup di VM xenserver con snapsot quiesce, and moreBasandomi sugli script xenbackup di Filippo Zanardo, ho realizzato una versione modificata di xenbackup, che per il momento sto usando con successo su Citrix Xenserver 5.6 fp1 e Xenserver 6.02.
Lo script consente di eseguire dei backup dei guest Citrix Xenserver e può essere configurato per farlo con diverse modalità.
Rispetto alla versione originale di Filippo ho introdotto alcune varianti:Riccardohttp://www.blogger.com/profile/13881495424455610941noreply@blogger.com6