Server Dell PowerEdge T410 - Revision history

PhilippeTeuwen: /* Backuppc guest */

2011-04-07T10:13:03Z

Backuppc guest

← Older revision		Revision as of 10:13, 7 April 2011
Line 83:		Line 83:
	** apt-get install backuppc		** apt-get install backuppc
	See also [[BackupPc]] for installation notes		See also [[BackupPc]] for installation notes
			* /etc/init.d/backuppc stop
			* mv /var/lib/backuppc /home
			* ln -s /home/backuppc /var/lib

	==Misc notes==		==Misc notes==

PhilippeTeuwen: /* SSH */

2011-04-07T09:47:31Z

SSH

← Older revision		Revision as of 09:47, 7 April 2011
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	I'm not sure if in the long run it'll help but given that there are already 12 CPUs, I've disabled the logical CPU support in the BIOS.		I'm not sure if in the long run it'll help but given that there are already 12 CPUs, I've disabled the logical CPU support in the BIOS.
	===SSH===		===SSH===
	Connecting directly as root is useful e.g. to run X11 programs such as xenstore-gtk and a local root password is usually needed for local console access but I don't' want to leave ssh+root+pwd so, edit /etc/ssh/sshd_config:		Connecting directly as root is useful e.g. to run X11 programs such as xenwatch, xenstore-gtk and a local root password is usually needed for local console access but I don't' want to leave ssh+root+pwd so, edit /etc/ssh/sshd_config:
	PermitRootLogin yes		PermitRootLogin yes
	Match User root		Match User root

PhilippeTeuwen: /* Misc notes */

2011-04-07T09:44:55Z

Misc notes

← Older revision		Revision as of 09:44, 7 April 2011
Line 92:		Line 92:
	===Hyperthreading===		===Hyperthreading===
	I'm not sure if in the long run it'll help but given that there are already 12 CPUs, I've disabled the logical CPU support in the BIOS.		I'm not sure if in the long run it'll help but given that there are already 12 CPUs, I've disabled the logical CPU support in the BIOS.
			===SSH===
			Connecting directly as root is useful e.g. to run X11 programs such as xenstore-gtk and a local root password is usually needed for local console access but I don't' want to leave ssh+root+pwd so, edit /etc/ssh/sshd_config:
			PermitRootLogin yes
			Match User root
			PasswordAuthentication no
			PubkeyAuthentication yes

PhilippeTeuwen: /* Xen */

2011-04-07T08:34:34Z

Xen

← Older revision		Revision as of 08:34, 7 April 2011
Line 29:		Line 29:
	*** actually we don't need ifrename because udev is now doing the same, see /etc/udev/rules.d/70-persistent-net.rules, you can simply change the NAME key		*** actually we don't need ifrename because udev is now doing the same, see /etc/udev/rules.d/70-persistent-net.rules, you can simply change the NAME key
	** Be sure the old name is not used anywhere else in your config, typically in /etc/network/interfaces		** Be sure the old name is not used anywhere else in your config, typically in /etc/network/interfaces
	==[[Xen]]==		==Xen==
			===Installation===
			See [[Xen]] Installation notes

		⚫	Edit /etc/default/xendomains and change XENDOMAINS_SAVE=/var/lib/xen/save to:
		⚫	XENDOMAINS_SAVE=""
	===Sagemath guest===		===Sagemath guest===
	* xen-create-image --hostname=sagemath --memory=12G --swap=12G --vcpus=20		* xen-create-image --hostname=sagemath --memory=12G --swap=12G --vcpus=20
Line 77:		Line 82:
	* Install backuppc		* Install backuppc
	** apt-get install backuppc		** apt-get install backuppc
			See also [[BackupPc]] for installation notes
	===Tuning===

⚫	Edit /etc/default/xendomains and change XENDOMAINS_SAVE=/var/lib/xen/save to:
⚫	XENDOMAINS_SAVE=""

	==Misc notes==		==Misc notes==

PhilippeTeuwen: /* Tuning */

2011-04-07T08:31:15Z

Tuning

← Older revision		Revision as of 08:31, 7 April 2011
Line 79:		Line 79:
	===Tuning===		===Tuning===

	Edit /etc/default/xendomains and change:		Edit /etc/default/xendomains and change XENDOMAINS_SAVE=/var/lib/xen/save to:
		⚫	XENDOMAINS_SAVE=""

	#XENDOMAINS_SAVE=/var/lib/xen/save
⚫	XENDOMAINS_SAVE=""

	==Misc notes==		==Misc notes==

PhilippeTeuwen: /* Xen */

2011-04-07T08:28:17Z

Xen

← Older revision		Revision as of 08:28, 7 April 2011
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	==[[Xen]]==		==[[Xen]]==
	===Sagemath guest===		===Sagemath guest===
	* xen-create-image --hostname=sagemath --memory=~~12288~~ --swap=~~12288~~ --vcpus=20		* xen-create-image --hostname=sagemath --memory=12G --swap=12G --vcpus=20
	* WARNING strangely the default root password was disabled with a '' in /etc/shadow so impossible to log in. I had to mount manually the lv (/dev/vg0/sagemath-disk) to remove the ''<br>One may prefer to setup the password interactively when creating the image with xen-create-image ... --passwd (or setup passwd=1 in /etc/xen-tools/xen-tools.conf as I've now shown in the above diff file)
	* lvm> lvcreate -L 1000G -n sagemath-data vg0		* lvm> lvcreate -L 1000G -n sagemath-data vg0
	* /etc/xen/sagemath.cfg: add data volume:		* /etc/xen/sagemath.cfg: add data volume:
	root = '/dev/xvda2 ro'		root = '/dev/xvda2 ro'
	disk = [		disk = [
	'phy:/dev/vg0/sagemath-disk,xvda2,w',		'phy:/dev/vg0/sagemath-disk,xvda2,w',
	'phy:/dev/vg0/sagemath-swap,xvda1,w',		'phy:/dev/vg0/sagemath-swap,xvda1,w',
	'phy:/dev/vg0/sagemath-data,xvda3,w',		+ 'phy:/dev/vg0/sagemath-data,xvda3,w',
	]		]

			* mkdir -p /etc/xen/auto
			* ln -s /etc/xen/sagemath.cfg /etc/xen/auto
	* xm create -c /etc/xen/sagemath.cfg		* xm create -c /etc/xen/sagemath.cfg
	* Hook the data drive as /home		* Hook the data drive as /home
Line 56:		Line 57:
	** ./sage		** ./sage
	** sage> notebook.setup()<br>Provide FQDN for TLS certificate generation		** sage> notebook.setup()<br>Provide FQDN for TLS certificate generation
			===Backuppc guest===
			* xen-create-image --hostname=backuppc --memory=1G --swap=1G --vcpus=20
			* lvm> lvcreate -L 200G -n backuppc-data vg0
			* /etc/xen/backuppc.cfg: fix MAC address if needed and add data volume:
			root = '/dev/xvda2 ro'
			disk = [
			'phy:/dev/vg0/backuppc-disk,xvda2,w',
			'phy:/dev/vg0/backuppc-swap,xvda1,w',
			+ 'phy:/dev/vg0/backuppc-data,xvda3,w',
			]

			* mkdir -p /etc/xen/auto
			* ln -s /etc/xen/backuppc.cfg /etc/xen/auto
			* xm create -c /etc/xen/backuppc.cfg
			* Hook the data drive as /home
			** mkfs.ext4 /dev/xvda3
			** In /etc/fstab: /dev/xvda3 /home ext4 noatime,nodiratime,errors=remount-ro 0 1
			** mount /home
			* Install backuppc
			** apt-get install backuppc
	===Tuning===		===Tuning===

	Edit /etc/default/xendomains and change:		Edit /etc/default/xendomains and change:

PhilippeTeuwen: /* Xen */

2011-04-07T07:32:35Z

Xen

← Older revision		Revision as of 07:32, 7 April 2011
Line 56:		Line 56:
	** ./sage		** ./sage
	** sage> notebook.setup()<br>Provide FQDN for TLS certificate generation		** sage> notebook.setup()<br>Provide FQDN for TLS certificate generation
			===Tuning===
			Edit /etc/default/xendomains and change:

			#XENDOMAINS_SAVE=/var/lib/xen/save
			XENDOMAINS_SAVE=""

	==Misc notes==		==Misc notes==
	===Boot & DHCP===		===Boot & DHCP===

PhilippeTeuwen at 07:31, 7 April 2011

2011-04-07T07:31:39Z

@@ Line 29: / Line 29: @@
 *** actually we don't need ifrename because udev is now doing the same, see /etc/udev/rules.d/70-persistent-net.rules, you can simply change the NAME key
 ** Be sure the old name is not used anywhere else in your config, typically in /etc/network/interfaces
-===XEN: installation===
+===Sagemath guest===
 * xen-create-image --hostname=sagemath --memory=12288 --swap=12288 --vcpus=20
 * WARNING strangely the default root password was disabled with a '*' in /etc/shadow so impossible to log in. I had to mount manually the lv (/dev/vg0/sagemath-disk) to remove the '*'<br>One may prefer to setup the password interactively when creating the image with xen-create-image ... --passwd (or setup passwd=1 in /etc/xen-tools/xen-tools.conf as I've now shown in the above diff file)
@@ Line 160: / Line 61: @@
 <br>In those cases I find dhclient still hooked to the non-existing bnx1 IF (which was renamed pbnx1 by XEN). I've to kill it and start a similar dhclient on IF xenbr0.
 <br>Finally I renamed the default interface as eth0 and called the xen bridge script without parameters: (network-script network-bridge)
 ===Hyperthreading===

Twalrant: /* XEN quickref */

2010-11-30T07:33:54Z

XEN quickref

← Older revision		Revision as of 07:33, 30 November 2010
Line 118:		Line 118:
	* xen-update-image # apt-get update; apt-get upgrade in the guest, !!! only if guest is NOT running		* xen-update-image # apt-get update; apt-get upgrade in the guest, !!! only if guest is NOT running
	* xm create /etc/xen/mynewguest.cfg		* xm create /etc/xen/mynewguest.cfg
	* xm list		* xm list # Show running xen guests
			* xm info # Show xen version and many other info
	* xm console mynewguest		* xm console mynewguest
	** CTRL+] to detach		** CTRL+] to detach

PhilippeTeuwen: Reverted edits by Etegohy (Talk) to last revision by PhilippeTeuwen

2010-11-24T20:33:38Z

Reverted edits by Etegohy (Talk) to last revision by PhilippeTeuwen

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