Difference between revisions of "Virtual Machines working group"
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#Defaults requiretty | #Defaults requiretty | ||
* Installed iSCSI target and client software for shared image repository | * Installed iSCSI target and client software for shared image repository | ||
| − | ** Howtos: [http://www.howtoforge.com/using-iscsi-on-debian-lenny-initiator-and-target Debian], [http://www.cyberciti.biz/tips/rhel-centos-fedora-linux-iscsi-howto.html CentOS] | + | ** Howtos: [http://www.howtoforge.com/using-iscsi-on-debian-lenny-initiator-and-target Debian client/server], [http://www.cyberciti.biz/tips/rhel-centos-fedora-linux-iscsi-howto.html CentOS client][http://www.cyberciti.biz/tips/howto-setup-linux-iscsi-target-sanwith-tgt.html CentOS server] |
** Maybe test later with encrypted iSCSI | ** Maybe test later with encrypted iSCSI | ||
** Two new machines ordered with the required iSCSI offload | ** Two new machines ordered with the required iSCSI offload | ||
Revision as of 12:57, 22 July 2009
Meetings
Kick-off <date> agenda minutes
Presentations
Open Issues
- Network Address Translation - What is the load?<br\>
- Virtual Machine Isolation - Prohibit internal network connectivity with IPTables.<br\>
- Image repository - Storage Area Network or distributed over worker nodes.<br\>
- Policy document<br\>
Infrastructure
I am setting up a testbed to investigate technical issues related to virtual machine management.
Hardware and Operating Systems
- Two Dell 1950 machines, dual CPU, 4 cores per CPU
- One machine has a CentOS-5 installation
- One machine has a Debian-squeeze installation
Software
- CentOS-5 comes with Xen 3.0
- Debian-squeeze comes with Xen 3.3
- Debian-squeeze Xen packages have a problem with tap:aio.
Fix: ln -s /usr/lib/xen-3.2-1/bin/tapdisk /usr/sbin echo xenblktap >> /etc/modules
- Opennebula has been installed on CentOS-5 following this guide
- A few additional staps were needed:
- Install rubygems and rubygem-sqlite3
- Opennebula has to be added to the sudoers file for xm
- Sudoers should not require a tty
- A few additional staps were needed:
wget ftp://fr.rpmfind.net/linux/EPEL/5/x86_64/rubygem-sqlite3-ruby-1.2.4-1.el5.x86_64.rpm wget ftp://fr.rpmfind.net/linux/EPEL/5/x86_64/rubygems-1.3.1-1.el5.noarch.rpm sudo rpm -Uvh rubygems-1.3.1-1.el5.noarch.rpm rubygem-sqlite3-ruby-1.2.4-1.el5.x86_64.rpm
In /etc/sudoers (on all machines) opennebula ALL = NOPASSWD: /usr/sbin/xm #Defaults requiretty
- Installed iSCSI target and client software for shared image repository
- Howtos: Debian client/server, CentOS clientCentOS server
- Maybe test later with encrypted iSCSI
- Two new machines ordered with the required iSCSI offload
- Image repository consists of LVM volume groups
- Performance of LVM is better than file based images
- Each logical volume contains an image
- This allows easy creation/deletion of new images
- VMs can run from cloned (Copy-On-Write) images
