If you have a drac, it should either be visible with the OpenManage interface, commands, or as a 10/100 port on the far left of the back of the server; and also should give you a setup screen during bootup. If you don't have one though, you can still use ipmi fencing to the on-board BMC/ESM card. We've found the only real drawback to this is that sometimes the ipmi fencing may have difficulty communicating to a locked up host or a host which has kernel panic'd.
The drac is better though, as it allows for ssh and full power-off/power-on functionality. Also, if your drac is a drac5 and has firmware greater than 1.20 on it (such as 1.33), you'll need to use the fence_drac5 module which is included but not fully documented.
On Tue, Aug 11, 2009 at 11:39 AM, <bergman@xxxxxxxxxxxx> wrote:
In the message dated: Tue, 11 Aug 2009 14:14:03 +0200,
The pithy ruminations from Juan Ramon Martin Blanco on
<Re: do I have a fence DRAC device?> were:
=> --===============1917368601==
=> Content-Type: multipart/alternative; boundary=0016364c7c07663f600470dca3b8
=>
=> --0016364c7c07663f600470dca3b8
=> Content-Type: text/plain; charset=ISO-8859-1
=> Content-Transfer-Encoding: quoted-printable
=>
=> > I=B4ll check it when I could reboot the server.
=> >=>
=> > greetings,
=> >
=> You have a BMC ipmi in the first network interface, it can be configured at
=> boot time (I don't remember if inside the BIOS or pressing cntrl+something
=> during boot)
Based on my notes, here's how I configured the DRAC interface on a Dell 1950
for use as a fence device:
Configuring the card from Linux depending on the installation of Dell's
OMSA package. Once that's installed, use the following
commands:
racadm config -g cfgSerial -o cfgSerialTelnetEnable 1
racadm config -g cfgLanNetworking -o cfgDNSRacName HOSTNAME_FOR_INTERFACE
racadm config -g cfgDNSDomainName DOMAINNAME_FOR_INTERFACE
racadm config -g cfgUserAdmin -o cfgUserAdminPassword -i 2 PASSWORD
racadm config -g cfgNicEnable 1
racadm config -g cfgNicIpAddress WWW.XXX.YYY.ZZZ
racadm config -g cfgNicNetmask WWW.XXX.YYY.ZZZ
racadm config -g cfgNicGateway WWW.XXX.YYY.ZZZ
racadm config -g cfgNicUseDhcp 0
I also save a backup of the configuration with:
racadm getconfig -f ~/drac_config
Hope this helps,
Mark
----
Mark Bergman voice: 215-662-7310
mark.bergman@xxxxxxxxxxxxxx fax: 215-614-0266
System Administrator Section of Biomedical Image Analysis
Department of Radiology University of Pennsylvania
PGP Key: https://www.rad.upenn.edu/sbia/bergman
=> Greetings,
=> >> > don=B4t see wher can I do it.=> Juanra
=>
=> >
=> > ESG
=> >
=> > 2009/8/10 Paras pradhan <pradhanparas@xxxxxxxxx>
=> >
=> > On Mon, Aug 10, 2009 at 5:24 AM, ESGLinux<esggrupos@xxxxxxxxx> wrote:
=> >> > Hi all,
=> >> > I was designing a 2 node cluster and I was going to use 2 servers DELL
=> >> > PowerEdge 1950. I was going to buy a DRAC card to use for fencing but
=> >> > running several commands in the servers I have noticed that when I run
=> >> this
=> >> > command:
=> >> > #ipmitool lan print
=> >> > Set in Progress : Set Complete
=> >> > Auth Type Support : NONE MD2 MD5 PASSWORD
=> >> > Auth Type Enable : Callback : MD2 MD5
=> >> > : User : MD2 MD5
=> >> > : Operator : MD2 MD5
=> >> > : Admin : MD2 MD5
=> >> > : OEM : MD2 MD5
=> >> > IP Address Source : Static Address
=> >> > IP Address : 0.0.0.0
=> >> > Subnet Mask : 0.0.0.0
=> >> > MAC Address : 00:1e:c9:ae:6f:7e
=> >> > SNMP Community String : public
=> >> > IP Header : TTL=0x40 Flags=0x40 Precedence=0x00 TOS=0x10
=> >> > Default Gateway IP : 0.0.0.0
=> >> > Default Gateway MAC : 00:00:00:00:00:00
=> >> > Backup Gateway IP : 0.0.0.0
=> >> > Backup Gateway MAC : 00:00:00:00:00:00
=> >> > 802.1q VLAN ID : Disabled
=> >> > 802.1q VLAN Priority : 0
=> >> > RMCP+ Cipher Suites : 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14
=> >> > Cipher Suite Priv Max : aaaaaaaaaaaaaaa
=> >> > : X=Cipher Suite Unused
=> >> > : c=CALLBACK
=> >> > : u=USER
=> >> > : o=OPERATOR
=> >> > : a=ADMIN
=> >> > : O=OEM
=> >> > does this mean that I already have an ipmi card (not configured) that
=> I
=> >> can
=> >> > use for fencing? if the anwser is yes, where hell must I configure it?
=> I
=> >> > If I haven=B4t a fencing device which one do you recommed to use?
=> >> > Thanks in advance
=> >> > ESG
=> >> >
=> >> > --
=> >> > Linux-cluster mailing list
=> >> > Linux-cluster@xxxxxxxxxx
=> >> > https://www.redhat.com/mailman/listinfo/linux-cluster
=> >> >
=> >>
=> >> Yes you have IPMI and if you are using 1950 Dell, DRAC should be there
=> >> too. You can see if you have DRAC or not when the server starts and
=> >> before the loading of the OS.
=> >>
=> >> I have 1850s and I am using DRAC for fencing.
=> >>
=> >>
=> >> Paras.
=> >>
=> >> --
=> >> Linux-cluster mailing list
=> >> Linux-cluster@xxxxxxxxxx
=> >> https://www.redhat.com/mailman/listinfo/linux-cluster
=> >>
=> >
=> >
--
Linux-cluster mailing list
Linux-cluster@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/linux-cluster
-- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
