Difference between revisions of "Ganeti"
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{{Warning|This is a very rough draft. Following the directions may or may not cause your entire server cluster to erupt into flames. }} | {{Warning|This is a very rough draft. Following the directions may or may not cause your entire server cluster to erupt into flames. }} | ||
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==KVM== | ==KVM== | ||
Revision as of 20:33, 23 May 2015
From Ganeti project page:
- Ganeti is a cluster virtual server management software tool built on top of existing virtualization technologies such as Xen or KVM and other Open Source software.
Warning: This is a very rough draft. Following the directions may or may not cause your entire server cluster to erupt into flames.
KVM
Lets fire up some networking.
# modprobe bridge
/etc/network/br1
DESCRIPTION='A static ethernet connection for interface eth1' INTERFACE='br1' CONNECTION='bridge' BRIDGE_INTERFACES="eth1" IP='static' ADDR='192.168.0.1' NETMASK='255.255.255.0' BROADCAST='192.168.0.255'
/etc/rc.conf
NETWORKS=(br1 br0) NETWORK_PERSIST="no"
netcfg br1
This creates a br1 interface and assigns it a static IP address. For more sophisticated setups, see the netcfg article.
Lets get some disk backing: Make sure you created a ganeti_backing_store.img
# modprobe loop # losetup /dev/loop0 ganeti_backing_store.img # pvcreate /dev/loop0
You can ignore any 'file descriptor leak' errors here. That's a problem with bash, not you, though it should get fixed.
# vgcreate ganeti /dev/loop0
Load the necessary kernel modules, either for Intel processors
# modprobe kvm # modprobe kvm-intel
or AMD processors
# modprobe kvm # modprobe kvm-amd
At this point begins the period where you will attempt various incantations beginning with gnt-cluster init, they will fail, and you will have to start over.
The following I found useful.
# rm -fr /var/{log,lib}/ganeti/*
# rm -fr /srv/ganeti
# pkill ganeti
# pkill gnt
# mkdir -p /srv/ganeti/{os,export}
Create your ganeti cluster:
gnt-cluster init --nic-parameters=link=br1 --master-netdev=br1 --enabled-hypervisor=kvm --vg-name ganeti mycluster
