ThomasRoth

• Wiki
• DocumentGraphics, Wiki Formatting
• AbwesenheitsListe

Hardware

• GreenCube GreenCubeManagement
  • ssh -4 -D 8787 troth@lxgw01.gsi.de
• ZfsHandling
• IPMI-Configuration
• LxIr
• Performanz: http://web-docs.gsi.de/~troth/org/performanz.html

FileSystems

• LVM
• Hebe, HebeBackup (DRBD)
• CVMFS: Servers, Clients, TroubleShooting
• Slurm: TroubleShooting
• Parseltongue: Anaconda et al.
• Ceph

Configuration Management

• CHEF: ChefIntroduction, TroubleShooting, UseCases, Installation,
  • Knife, Wallet - Threaten Kerberos with Knife
• Zugangskontrolle, Subversion Checkout

Source Code Management

• GitUsage

Network

• Infiniband

Operating System, Installations

• CentOS
  • http://web-docs.gsi.de/~troth/org/centos.html
• BootMethods: PXE, TftpServer, FaiCDBoot
• Kerberos
• Icinga2

Virtuelles

• HvsVms

Logspam

> echo ':syslogtag,contains,"irqbalance" ~' > /etc/rsyslog.d/10-irqbalance.conf
+ restart of rsyslog

Emacs

Mathe mit Emacs

• Put into .emacs

(defun caer (arg beg end)
  "Calculate the region and display the result in the echo area.
With prefix ARG non-nil, insert the result at the end of region."
  (interactive "P\nr")
  (let* ((expr (buffer-substring-no-properties beg end))
         (result (calc-eval expr)))
    (if (null arg)
        (message "%s = %s" expr result)
      (goto-char end)
      (save-excursion
        (insert result)))))

Then mark the numerical expression in the text to evaluate, do C-u M-x caer and the result will appear at the end of the expression.

• Sum up column:
  • Since Emacs 24, C-x space starts "rectangle-mark-mode", sets point and visually shows the column then marked using the arrow keys
  • M-x calc-grab-sum-down adds up the number in the so-marked column

32 bit in 64 bit

dpkg --add-architecture i386
aptitude update

• Install missing packages

SchMutz

Häute

The overall skin:

• Set SKIN = pattern

Skin styles:

• Set FOSWIKI_LAYOUT_URL= /pub/System/PatternSkinThemeFatWilly/layout.css
• Set FOSWIKI_STYLE_URL = /pub/System/PatternSkinThemeFatWilly/style.css
• Set FOSWIKI_COLORS_URL = /pub/System/PatternSkinThemeFatWilly/colors.css

Theme variants:

• Set PATTERNSKIN_COLUMNS = /pub/System/PatternSkinThemeFatWilly/column_right.css
• Set PATTERNSKIN_THEME_VARIANT =

Navigation:

• Set PATTERNSKIN_NAVIGATION_TOPIC= System/PatternSkinThemeFatWillyNavigation

Top bar:

• Set WEBHEADERART =
• Set WEBHEADERBGCOLOR =