= 2010-09-03 =

== Lustre ==

 * 兩個我常用在管理 lustre 的 .bash_aliases 函數
{{{
function check_lustre
{
  dsh -a "mount -t lustre -l" | grep biofs-OST | awk '{ print $7 }' | sort -n | nl
  sudo lctl dl | grep osc
}
function disable_lustre
{
  if [ "$1" == "" ]; then echo "disable_lustre <OSTID>"; return 0; fi
  for i in `sudo lctl dl | grep osc | grep "$1" | awk '{ print $1 }'`
  do
    echo "lctl --device $i deactivate"
    sudo lctl --device $i deactivate
  done
  sudo dsh -a lctl dl | grep osc | grep "$1"
}
}}}

== munin ==

 * 先前裝 munin 都還蠻方便的，可是最近在 debian testing 上測試，就一直出現 permission denied。今天終於知道原因了，因為新版的 munin 是產生在 /var/cache/munin/www 而非 /var/www/munin，此外在 apache 設定上預設也限制只能從 127.0.0.1 才能看。所以得把那行換掉。
{{{
#!diff
--- munin.org	2010-09-03 19:03:17.000000000 +0800
+++ munin	2010-09-03 19:03:05.000000000 +0800
@@ -1,7 +1,8 @@
 Alias /munin /var/cache/munin/www
 <Directory /var/cache/munin/www>
         Order allow,deny
-        Allow from localhost 127.0.0.0/8 ::1
+#        Allow from localhost 127.0.0.0/8 ::1
+        Allow from all
         Options None
}}}

== netboot.me ==

 * 使用 netbootme.iso 啟動 Clonezilla Live CD
   * First, I boot my VirtualBox VM from netbootme.iso and press any key to see the options
   * [[Image(jazz/10-09-03:0_netboot-any-key.png)]]
   * Second, select "boot a config directory directly"
   * [[Image(jazz/10-09-03:1_netboot-menu.png)]]
   * Here is a boot config that I had create, the id number of this config is 254001
   * [[Image(jazz/10-09-03:netbootme.conf.png,width=800)]]
   * Enter the config id number with 254001
   * [[Image(jazz/10-09-03:2_netboot-conf-id.png)]]
   * After download clonezilla ISO image from the INTERNET, you will see it boot into Clonezilla Live as well.
   * [[Image(jazz/10-09-03:3_netboot-clonezilla-1.png)]]
   * [[Image(jazz/10-09-03:4_netboot-clonezilla-2.png)]]