As entry level servers they have the following advantages
As entry level servers they have the following disadvantages
The v20z is available with many models of CPU. The models manufactured later have multiple cores. At the ING we use the units with dual cores and keep a pair of simpler units as spares. Just what the CPU configuration is can be seen at boot and also from the running system.
root@lpss32# memconf hostname: lpss32 Sun Microsystems, Inc. Sun Fire V20z (Solaris x86 machine) (2 X Dual Core AMD Opteron(tm) Processor 270 1993MHz) socket cpu0.mem0: 7f40000000000000 1GB DDR400 (PC3200) ECC socket cpu0.mem1: 7f40000000000000 1GB DDR400 (PC3200) ECC socket cpu1.mem0: 7f40000000000000 1GB DDR400 (PC3200) ECC socket cpu1.mem1: 7f40000000000000 1GB DDR400 (PC3200) ECC empty memory sockets: cpu0.mem2, cpu0.mem3, cpu1.mem2, cpu1.mem3 total memory = 4096MB (4GB)
At the ING we only use accounts in the manager group. The accounts on the SP recognise SSH keys. ING system administrators may add their personal SSH public key. However the SP is very simple. In the initial simple setup used at ING there is only one manager account - and each account has just one key. When I set up the machines I added my key for ing_manager_account.
The following is taken from "Sun Fire V20z and Sun Fire V40z Servers--Server Management Guide: Appendix B"
To work around this limitation ING System Administrators should add a user with their own username (in the example below my_username) to the manager group of users.
Access Add Public Key Subcommand Description: Installs a public key for SSH authentication, which enables SSH logins and remote command execution without being prompted for a password. You must first generate a key pair (RSA or DSA), which you can generate using the ssh-keygen command included with OpenSSH. * Only local users can install public keys (not users who gain authorization through a mapping of a directory-services group). * Manager-level users can add keys for any local user. * Admin-level users can add only themselves. * Service-level users can not add anyone. * Up to 10 users can install public keys; each user can install only one key. * The maximum key length supported is 4096 bits.
localhost $ access add user -g manager -p ********* -u my_usernameConfirm by displaying the accounts
localhost $ access get users Group User monitor admin manager ing_manager_account my_username serviceNow add one key to the personal account for the ING system administrator
localhost $ access add public key -k /tmp/mykey -u my_usernameSo now there should be two users who have a public key access. Confirm by listing them.
localhost $ access get public key users ing_manager_account my_usernameThe SP command interface is limited to just what you need to do a few operations on the V20z. A starting point is to type help.
localhost $ help Available Commands: platform, access, sp, sensor, inventory, ipmi. Each of these commands includes a help option (--help).And so for example we can get detailed help on a single command
localhost $ platform --help
Usage: platform console {-h|--help}
platform get console {-h|--help}
platform get hostname {-h|--help}
platform get mac {-h|--help}
platform get power state {-h|--help}
platform get product-id {-h|--help}
platform get os state {-h|--help}
platform set console {-h|--help}
platform set os state boot {-h|--help}
platform set os state reboot {-h|--help}
platform set os state shutdown {-h|--help}
platform set os state update-bios {-h|--help}
platform set power state {-h|--help}
localhost $ platform set power state off
Platform COMA". To discover the setting
use the command platform get console. localhost $ platform get console Rear Panel Platform COMAIf this is not the setting then you can correct it by
localhost $ platform set console -s platform
platform console" to connect to the serial line:SP Console". To discover the setting
use the command platform get console. localhost $ platform get console Rear Panel Console Redirection Speed Pruning Log Trigger SP Console Enabled 9600 No 244 KBIf this is not the setting then you can correct it to the Service Processor (SP) by
localhost $ platform set console -s sp -S 9600
For a serial connection the eeprom value should be ttya
root@lpss84# eeprom ata-dma-enabled=1 atapi-cd-dma-enabled=0 ttyb-rts-dtr-off=false ttyb-ignore-cd=true ttya-rts-dtr-off=false ttya-ignore-cd=true ttyb-mode=9600,8,n,1,- ttya-mode=9600,8,n,1,- lba-access-ok=1 prealloc-chunk-size=0x2000 bootpath=/pci@0,0/pci1022,7450@a/pci17c2,10@4/sd@0,0:a keyboard-layout=UK-English console=ttya |
localhost $ platform console [Enter `^Ec?' for help] lpss57 console login: lpss57 console login:To get out of that console session we do need that help so type "^E" that is to say "control-E" then "c" then "?"
so to close the terminal session type "^Ec." that is to say "control-E" then "c" then "."lpss57 console login: help] . disconnect ; move to another console a attach read/write b send broadcast message c toggle flow control d down a console e change escape sequence f force attach read/write g group info i information dump L toggle logging on/off l? break sequence list l0 send break per config file l1-9 send specific break sequence m display the message of the day o (re)open the tty and log file p replay the last 60 lines r replay the last 20 lines s spy read only u show host status v show version info w who is on this console x show console baud info z suspend the connection | attach local command ? print this messageignore/abort command ^R replay the last line \ooo send character by octal code
localhost $ platform set console --help
platform set console {--serial|-s} sp [{{--enable|-e}|{--disable|-d}}]
[{{--prune|-p}|{--noprune|-n}}] [{--speed|-S}
{1200|2400|4800|9600|19200|38400|57600|115200}] [{--log|-l} size] [{-h|--help}]
or
platform set console {--serial|-s} platform [{-h|--help}]
{-S|--speed} {1200|2400|4800|9600|19200|38400|57600|115200}
Select the port speed on the SP to use to connect to the platform
console. BIOS, the platform OS and the SP must all be configured for
the same speed. This setting does not affect the platform
configuration
Cannot be used with: -s=platform
{-d|--disable} Indicate that the platform console monitor is inactive
Cannot be used with: -e -s=platform
{-e|--enable} Indicate that the platform console monitor is active
Cannot be used with: -d -s=platform
{-h|--help} Print the usage message.
{-l|--log} size Select the trigger size in KB for console log rotation. Minimum 64KB,
Maximum 1024KB
Cannot be used with: -s=platform
{-n|--noprune} Indicate that the platform console log should be the raw console data
Cannot be used with: -p -s=platform
{-p|--prune} Indicate that the platform console log is to be cleaned of ANSI
sequences and pruned of duplicated information
Cannot be used with: -n -s=platform
{-s|--serial} {sp|platform}
Specify whether the serial port is connected to the platform COMA port,
or the SP serial console
Cannot be used with: -e [platform] -d [platform] -p [platform] -n [plat form] -S [platform] -l [platform]
An out of date listing might look like this:localhost $ inventory get software Name Revision Install Date Description BIOS-V20z V1.35.5.1 Mon Nov 9 15:32:58 2009 Platform BIOS for V20z servers SP Value-Add V2.4.0.20 Tue Nov 10 11:41:37 2009 SP Value-Add Software SP Base V2.4.0.20 Tue Nov 10 11:41:37 2009 SP Base Software
localhost $ inventory get software Name Revision Install Date Description BIOS-V20z V1.33.7.2 Fri Oct 7 22:25:31 2005 Platform BIOS for V20z servers Operator Panel V1.0.1.2 Fri Oct 7 19:13:20 2005 Operator Panel Firmware PPCBoot V2.3.0.1 Fri Oct 7 19:13:20 2005 PPCBoot Software SP Value-Add V2.3.0.15 Fri Jul 29 20:06:58 2005 SP Value-Add Software SP Base V2.3.0.15 Fri Jul 29 20:06:58 2005 SP Base Software