{"id":93,"date":"2009-10-29T16:39:39","date_gmt":"2009-10-29T22:39:39","guid":{"rendered":"http:\/\/benincosa.com\/blog\/?p=93"},"modified":"2014-11-19T11:26:55","modified_gmt":"2014-11-19T17:26:55","slug":"kvm-with-rhel5-4","status":"publish","type":"post","link":"https:\/\/benincosa.com\/?p=93","title":{"rendered":"KVM with RHEL5.4"},"content":{"rendered":"

Installing KVM with RHEL5.4 is pretty easy.\u00a0 These were some of my notes that I hope you can somewhat follow along with. I have since done it with RHEL5.5 with the same results. Here’s how I got my virtual machine up:<\/p>\n

1. Install Packages<\/h3>\n

[cc lang=”bash”]
\nyum -y install kvm python-virtinst libvirt libvirt-python virt-manager virt-viewer
\n[\/cc]
\n** Note: I got some of these packages from xCAT’s distribution which has some updates. But some of these should still work.<\/p>\n

2. Start libvirt<\/h3>\n

[cc lang=”bash”]
\nchkconfig –level 345 libvirtd on
\nservice libvirtd start
\n[\/cc]<\/p>\n

3. Configure Bridge Network<\/h3>\n

In my set up I want my virtual machines to be able to access the network.\u00a0 I also want machines on the network to access my virtual machine.\u00a0 In my setup, eth1 is on the internal network to my cluster.\u00a0 What I will do is create a bridge with eth1.\u00a0 I also need to make a few aliases to handle my different networks.<\/p>\n

\/etc\/sysconfig\/network-scripts\/ifcfg-eth1<\/strong><\/p>\n

[cc lang=”bash”]
\n# Intel Corporation 80003ES2LAN Gigabit Ethernet Controller (Copper)
\nDEVICE=eth1
\nHWADDR=00:15:17:85:A8:CD
\nONBOOT=yes
\nBRIDGE=br0
\n[\/cc]<\/p>\n

\/etc\/sysconfig\/network-scripts\/ifcfg-br0<\/strong><\/p>\n

[cc lang=”bash”]
\nDEVICE=br0
\nBOOTPROTO=static
\nONBOOT=yes
\nTYPE=Bridge
\nIPADDR=172.20.0.1
\nNETMASK=255.255.0.0
\n[\/cc]<\/p>\n

\/etc\/sysconfig\/network-scripts\/ifcfg-br0:1<\/strong>
\n[cc lang=”bash”]
\nDEVICE=br0:1
\nIPADDR=172.29.0.1
\nNETMASK=255.255.0.0
\nONBOOT=yes
\n[\/cc]<\/p>\n

\/etc\/sysconfig\/network-scripts\/ifcfg-br0:2<\/strong>
\n[cc lang=”bash”]
\nDEVICE=br0:2
\nIPADDR=172.30.0.1
\nNETMASK=255.255.0.0
\nONBOOT=yes
\n[\/cc]<\/p>\n

4. Create Virtual Machine<\/h3>\n

[cc lang=”bash”]
\nvirt-install –name xcatmgr –ram 1024 –connect qemu:\/\/\/system –disk path=\/install\/libvirt\/images\/xcat.img,size=10 –vnc –cdrom=\/install\/isos\/RHEL5.4-Server-20090819.0-x86_64-DVD.iso -b br0 –os-variant=rhel5
\n[\/cc]<\/p>\n

4.2 Copying Virtual Appliance<\/h3>\n

I created an xCAT appliance that I wanted to run:
\n[cc lang=”bash”]
\nmodprobe kvm
\nmodprobe kvm.intel
\nservice libvirshd restart
\n[\/cc]
\nThen import my machine:<\/p>\n

define \/install\/xcatapp\/xcatmgr.xml<\/p>\n

(or just copy it to \/etc\/libvirtd\/qemu and restart libvirshd)<\/p>\n

From there it just booted up, launched virt-viewer and away it went.\u00a0 I’m doing this on 1TB SATA disks, and the performance is just horrible.<\/p>\n

Even though I did this all with RHEL5.4, this post<\/a> was very helpful as well.<\/p>\n

Now, I also want my nodes to bridge directly to the physical network.
\n[cc lang=”bash”]
\nservice libvirtd stop
\nip link set virbr0 down
\nbrctl delbr virbr0
\ncreate br0 with \/etc\/sysconfig\/network-scripts
\n[\/cc]<\/p>\n

bind it to eth1<\/p>\n

then make new net:
\n[cc lang=”bash”]
\nbrctl setfd vlan1 0
\nip addr add dev vlan1 172.20.1.19\/16
\nbrctl addif vlan1 eth0
\nip addr del dev eth0 172.20.1.19\/16
\nip link set vlan1 up
\nvirt-viewer xcatmgr
\n[\/cc]<\/p>\n

Other good notes:<\/p>\n

http:\/\/wiki.centos.org\/HowTos\/KVM#head-c02a0b33e7949b0bc3b151ac6e0bdfb91b6bbd1c<\/p>\n","protected":false},"excerpt":{"rendered":"

Installing KVM with RHEL5.4 is pretty easy.\u00a0 These were some of my notes that I hope you can somewhat follow along with. I have since done it with RHEL5.5 with the same results. Here’s how I got my virtual machine up: 1. Install Packages [cc lang=”bash”] yum -y install kvm python-virtinst libvirt libvirt-python virt-manager virt-viewer…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[920,916],"tags":[82,35],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/benincosa.com\/index.php?rest_route=\/wp\/v2\/posts\/93"}],"collection":[{"href":"https:\/\/benincosa.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/benincosa.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/benincosa.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/benincosa.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=93"}],"version-history":[{"count":7,"href":"https:\/\/benincosa.com\/index.php?rest_route=\/wp\/v2\/posts\/93\/revisions"}],"predecessor-version":[{"id":233,"href":"https:\/\/benincosa.com\/index.php?rest_route=\/wp\/v2\/posts\/93\/revisions\/233"}],"wp:attachment":[{"href":"https:\/\/benincosa.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=93"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/benincosa.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=93"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/benincosa.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=93"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}