Andy Paton's most Technical Adventure

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/