Andy Paton's most Technical Adventure

I love the simple things in life, especially those that make life simple. I was requested to build two Solaris 10 servers remotely, Setup SUNWjet & template (very straight forward these days) One putty session over VPN, loaded with screen utility with named split screens. I didn't use any carbon travelling to site, but shouldn't I get some bonus points for low bandwidth as well!! Screen Options ^AA = to name a session ^As = Split screen ^ATAB = Switch split screen Putty Setting's, SSH2, Compression and Blowfish encryption.

Curious on how this will evolve. OpenSolaris life outside of Oracle/Sun is uncertain, will the community strength or fold?

Can you use Solaris wanboot to boot a system into single user mode? Google or Sun Docs didn't have the definitive answer for me. Answer is YES T5240, No Keyboard Copyright 2010 Sun Microsystems, Inc.  All rights reserved. OpenBoot 4.30.7, 8192 MB memory available, Serial #xxxxxx. Ethernet address 0:ff:ff:ff:f:ff, Host ID: 8xxxxxx. {0} ok {0} ok setenv network-boot-arguments host-ip=10.1.1.1,router-ip=10.1.1.254,subnet-mask=255.255.255.0,hostname=hostname-gd,file=http://172.16.1.1:80/cgi-bin/wanboot-cgi network-boot-arguments =  host-ip=10.1.1.1,router-ip=10.1.1.254,subnet-mask=255.255.255.0,hostname=hostname-gd,file=http://172.16.1.1:80/cgi-bin/wanboot-cgi {0} ok boot net -s Boot device: /virtual-devices@100/channel-devices@200/network@0  File and args: -s wanboot info: WAN boot messages->console wanboot info: configuring /virtual-devices@100/channel-devices@200/network@0 wanboot progress: wanbootfs: Read 368 of 368 kB (100%) wanboot info: wanbootfs: Download complete

Red Hat recommended SWAP to be no larger than 4Gb, 1) Show current swap swapon -s 2) Unmount Swap swapoff /dev/mapper/VolGroup00-LogVol01 3) Reduce from 54Gb to 4Gb (Each LV Extent is 32Mb) lvreduce -l -1600 /dev/VolGroup00/LogVol01 4) Reformat swap mkswap /dev/VolGroup00/LogVol01 5) Mount swap as defined in /etc/fstab swapon -a

VMware's vMA is an execllet tool for managing ESXi environments and comes as a pre-built Virtual machine (Appliance). My method of setting it up for the UK, thus my cronjobs run in GMT/BST. Setup Authentification to vCenter/ESX hosts sudo vifp addserver <192.168.10.90> vifp listservers vifpinit Test it works vicfg-nics -l --vihost Update vMA $ sudo vi /etc/vmware/esxupdate/vimaupdate.conf proxy = http:// proxyport = $ sudo vima-update scan $ sudo vima-update update Setup SSH Keys $ mkdir ~/.ssh $ vi ~/.ssh/authorized_keys2 $ chmod 700 ~/.ssh/authorized_keys2 Set Time and local $ sudo mv /etc/localtime /etc/localtime.org $ sudo ln -s /usr/share/zoneinfo/Europe/London /etc/localtime $ sudo vi /etc/sysconfig/keyboard KEYTABLE="uk" $ sudo vi /boot/grub/menu.1st title Red Hat Enterprise Linux Server (2.6.18-164.el5) root (hd0,0) kernel /vmlinuz-2.6.18-164.el5 ro root=/dev/VolGroup00/root quiet notsc divider=10 initrd /initrd-2.6.1

A customer had an iSCSI issue and was required to capture network packets at a specific time on a Windows 2008 server. I came up with simple method using Wireshark's tshark.exe and Windows scheduler "AT". at cmd /c c:\capture.bat type c:\capture.bat rem Capture WireShark example rem Andy Paton rem WTL rem use AT to run batch rem example at 01:50 cmd /c c:\capture.bat rem debug at issues rem example at 09:50 /interactive cmd /k c:\capture.bat rem -a duration:1200 in seconds rem -B Buffer Size - default is 1Mb rem -i Interface number - use "tshark.exe -D" to list interface numbers rem -n don't resolve IP addresses rem -q Quiet output rem -w output file rem capture filter "host " c:\"Program Files"\Wireshark\tshark -a duration:1200 -B 2 -i 4 -n -q -w c:\network.out host 192.168.1.1

Been playing with ZFS dedupe for the last two weeks and just wanted to share my findings.   Setup OpenSolaris build 131 Sun X4200, 2 x Dual Core Opteron 2.6Ghz, 8Gb Ram, 4 x 73Gb SAS 10Krpm root@osol:~# zfs list NAME                       USED  AVAIL  REFER  MOUNTPOINT compress                    72K  66.9G    21K  /compress dedupe                      72K  66.9G    21K  /dedupe root@osol:~# zfs set compression=on compress root@osol:~# zfs set dedup=on dedupe Wanted to see how much real data would dedupe. I loaded the my company  project/Software folders, 68,000 files (Visio/PDF/Project/Word/OpenOffice/Excel,ISO's... ) total of 38.9Gb Load times, copying files from local UFS filesystem to ZFS dataset. root@osol:/ufs# ptime tar cf - iso projects software | pv | ( cd /dedupe/ ; tar xf - ) real    19:51.930407394 user        5.807881662 sys      1:48.025965013 38.8GB 0:19:51 [33.3MB/s] root@osol:/ufs# ptime tar cf - iso projects software | pv | ( cd /compress/