Difference between revisions of "Virtual Machines working group"
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Jump to navigationJump to search| Line 24: | Line 24: | ||
** A few additional staps were needed: | ** A few additional staps were needed: | ||
*** Install rubygems and rubygem-sqlite3 | *** Install rubygems and rubygem-sqlite3 | ||
| − | *** Opennebula has to be added to the sudoers file for xm | + | *** Opennebula has to be added to the sudoers file for xm and xentop |
*** Sudoers should not require a tty | *** Sudoers should not require a tty | ||
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/rubygem-sqlite3-ruby-1.2.4-1.el5.x86_64.rpm | ||
| Line 32: | Line 32: | ||
In /etc/sudoers (on all machines) | In /etc/sudoers (on all machines) | ||
opennebula ALL = NOPASSWD: /usr/sbin/xm | opennebula ALL = NOPASSWD: /usr/sbin/xm | ||
| + | opennebula ALL = NOPASSWD: /usr/sbin/xentop | ||
#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 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] | ** 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] | ||
Revision as of 07:06, 23 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 (stand alone) 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 and xentop
- 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 opennebula ALL = NOPASSWD: /usr/sbin/xentop #Defaults requiretty
- Installed iSCSI target and client software for shared image repository
- Howtos: Debian client/server, CentOS client, CentOS 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
- Implemented iSCSI image management for opennebula following the storage guide
- Changed oned configuration
- Added tm_iscsi configuration
- Implemented transfer manager commands
In /opt/opennebula/etc/oned.conf: TM_MAD = [ name = "tm_iscsi", executable = "one_tm", arguments = "tm_iscsi/tm_iscsi.conf", default = "tm_iscsi/tm_iscsi.conf" ]
/opt/opennebula/etc/tm_iscsi/tm_iscsi.conf /opt/opennebula/etc/tm_iscsi/tm_iscsirc
/opt/opennebula/lib/tm_commands/iscsi/tm_clone.sh /opt/opennebula/lib/tm_commands/iscsi/tm_delete.sh /opt/opennebula/lib/tm_commands/iscsi/tm_ln.sh /opt/opennebula/lib/tm_commands/iscsi/tm_mkimage.sh /opt/opennebula/lib/tm_commands/iscsi/tm_mkswap.sh /opt/opennebula/lib/tm_commands/iscsi/tm_mv.sh
