[Linux-cluster] do I have a fence DRAC device?
Kaerka Phillips
kbphillips80 at gmail.com
Wed Aug 12 11:53:08 UTC 2009
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 at merctech.com> wrote:
>
>
> In the message dated: Tue, 11 Aug 2009 14:14:03 +0200,
> The pithy ruminations from Juan Ramon Martin Blanco on
> <Re: [Linux-cluster] do I have a fence DRAC device?> were:
> => --===============1917368601==
> => Content-Type: multipart/alternative;
> boundary=0016364c7c07663f600470dca3b8
> =>
> => --0016364c7c07663f600470dca3b8
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> => Content-Transfer-Encoding: quoted-printable
> =>
> => On Tue, Aug 11, 2009 at 2:03 PM, ESGLinux <esggrupos at gmail.com> wrote:
> =>
> => > Thanks
> => > 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 at uphs.upenn.edu 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,
> => Juanra
> =>
> => >
> => > ESG
> => >
> => > 2009/8/10 Paras pradhan <pradhanparas at gmail.com>
> => >
> => > On Mon, Aug 10, 2009 at 5:24 AM, ESGLinux<esggrupos at gmail.com> 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
> => >> > don=B4t see wher can I do it.
> => >> > If I haven=B4t a fencing device which one do you recommed to use?
> => >> > Thanks in advance
> => >> > ESG
> => >> >
> => >> > --
> => >> > Linux-cluster mailing list
> => >> > Linux-cluster at redhat.com
> => >> > 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 at redhat.com
> => >> https://www.redhat.com/mailman/listinfo/linux-cluster
> => >>
> => >
> => >
>
>
>
> --
> Linux-cluster mailing list
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> https://www.redhat.com/mailman/listinfo/linux-cluster
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