KVM + Ceph with Pacemaker

Architecture

• Hosts: 2
• Roles:
  • Host 1: KVM, Ceph
  • Host 2: KVM, Ceph

Steps

1. setup ceph cluster
2. setup pacemaker cluster
3. create VM with virt-install
4. export the xml with virsh dump
5. edit the xml to use ceph as backend and change other desired settings¹
6. add a virtualdomain resource to pacemaker with the xml²

Written with StackEdit.

---

1. USING LIBVIRT WITH CEPH RBD ↩︎

2. VirtualDomain (resource agent) - Linux-HA ↩︎

KVM + Ceph with Pacemaker

Architecture

• Hosts: 2
• Roles:
  • Host 1: KVM, Ceph
  • Host 2: KVM, Ceph

Steps

1. setup ceph cluster
2. setup pacemaker cluster
3. create VM with virt-install
4. export the xml with virsh dump
5. edit the xml to use ceph as backend and change other desired settings¹
6. add a virtualdomain resource to pacemaker with the xml²

Written with StackEdit.

---

1. USING LIBVIRT WITH CEPH RBD ↩︎

2. VirtualDomain (resource agent) - Linux-HA ↩︎

pietty with gnu screen scroll buffer

Enable mouse scroll with the GNU screen scrollback:

1. Check Option > More Options > Terminal > Features > Disable switching to alternate terminal screen
2. Make sure the PieTTY scrollback matches the setting of GNU screen. If not, change it at Option > More Options > Window > Lines of scrollback
3. Add "termcapinfo xterm*|xs|rxvt|terminal ti@:te@" to ~/.screenrc

L4D2 Dedicated Server setup (Linux)

1. Download SteamCMD
   mkdir steam
   cd steam
   mkdir steamcmd
   wget http://media.steampowered.com/installer/steamcmd_linux.tar.gz
tar xzf steamcmd_linux.tar.gz -C steamcmd
2. Install L4D2 dedicated server
cd steamcmd
./steamcmd.sh +login anonymous +force_install_dir `pwd`/../L4D2 +app_update 222860 validate +quit
3. Install SourceMod and Metamod:Source
cd steam
wget http://newyork.download.maverickservers.com/source/sourcemod-1.5.2-linux.tar.gz
tar xvzf sourcemod-1.5.2-linux.tar.gz -C L4D2/left4dead2
wget http://newyork.download.maverickservers.com/source/mmsource-1.10.0-linux.tar.gz
tar xvzf mmsource-1.10.0-linux.tar.gz -C L4D2/left4dead2
4. Verify the installation
cd steam/L4D2
./srcds_run
meta version
If the version info is showed up, the installation is successful
5. Install ToolZ mod
wget 'http://forums.alliedmods.net/attachment.php?attachmentid=122230&d=1373147952' -O l4dtoolz\(L4D2\)-1.0.0.9h.zip
unzip l4dtoolz\(L4D2\)-1.0.0.9h.zip -d L4D2/left4dead2/addons

6. Install bebop mod
wget 'http://forums.alliedmods.net/attachment.php?attachmentid=54217&d=1259334888' -O bebop_0.2beta.zip
unzip bebop_0.2beta.zip bebop.smx -d L4D2/left4dead2/addons
7. Edit server config to allow more than 8 players
open steam/L4D2/left4dead2/cfg/server.cfg and add these lines:
        sv_maxplayers 8
        sv_visiblemaxplayers 8
        sv_removehumanlimit 1
        sv_force_unreserved 1

Build OpenCV

1. Prerequisite
• ffmpeg
• build with pic "--enable-pic"
• build shared "--enable-shared" (optional)
• numpy
• libgfortran
• Intel TBB
  
2.  Build
   tar xjf OpenCV-2.4.3.tar.bz2
   cd OpenCV-2.4.3
   mkdir release
   cd release
   cmake .. -D CMAKE_INSTALL_PATH=$topt -D PYTHON_LIBRARY=$topt/lib/libpython2.7.a -D PYTHON_INCLUDE_DIR=$topt/include/python2.7 -D PYTHON_PACKAGES_PATH=$topt/lib/python -D WITH_TBB=ON -D TBB_LIB_DIR=$topt/lib/cc.4.1.0_libc2.4_kernel2.6.16.21
   make
   make install

Create self signed certificate

openssl req -new -x509 -key server.key -out server.cert -newkey rsa:1024

-req: request
-x509: self-signed

Install python module

python setup.py install --home=$topt

installs the module to $topt/lib/python

or

python setup.py install --prefix=$topt

will install the module to $topt/lib/pythonX.Y/site-packages