Revision 6f547f96 doc/iallocator.rst
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"disk_template": "drbd", |
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"memory": 2048, |
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"disk_space_total": 3328, |
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"os": "etch-image"
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"os": "debootstrap+default"
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}, |
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"cluster_name": "cluster1.example.com", |
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"instances": {
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"nodes": [ |
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"nodee1.com" |
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], |
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"os": "etch-image"
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"os": "debootstrap+default"
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}, |
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"instance2.example.com": {
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"tags": [], |
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"node2.example.com", |
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"node3.example.com" |
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], |
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"os": "etch-image"
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"os": "debootstrap+default"
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} |
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}, |
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"version": 1, |
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~~~~~~~~~~~~~~~~~~~~~ |
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:: |
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# gnt-instance add -t plain -m 2g --os-size 1g --swap-size 512m --iallocator dumb-allocator -o etch-image instance3
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# gnt-instance add -t plain -m 2g --os-size 1g --swap-size 512m --iallocator hail -o debootstrap+default instance3
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Selected nodes for the instance: node1.example.com |
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* creating instance disks... |
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[...] |
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# gnt-instance add -t plain -m 3400m --os-size 1g --swap-size 512m --iallocator dumb-allocator -o etch-image instance4
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# gnt-instance add -t plain -m 3400m --os-size 1g --swap-size 512m --iallocator hail -o debootstrap+default instance4
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Failure: prerequisites not met for this operation: |
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Can't compute nodes using iallocator 'dumb-allocator': Can't find a suitable node for position 1 (already selected: )
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Can't compute nodes using iallocator 'hail': Can't find a suitable node for position 1 (already selected: )
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# gnt-instance add -t drbd -m 1400m --os-size 1g --swap-size 512m --iallocator dumb-allocator -o etch-image instance5
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# gnt-instance add -t drbd -m 1400m --os-size 1g --swap-size 512m --iallocator hail -o debootstrap+default instance5
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Failure: prerequisites not met for this operation: |
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Can't compute nodes using iallocator 'dumb-allocator': Can't find a suitable node for position 2 (already selected: node1.example.com) |
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Can't compute nodes using iallocator 'hail': Can't find a suitable node for position 2 (already selected: node1.example.com) |
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Reference implementation |
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~~~~~~~~~~~~~~~~~~~~~~~~ |
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Ganeti's default iallocator is "hail" which is part of the separate |
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ganeti-htools project. In order to see its source code please clone |
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``git://git.ganeti.org/htools.git``. Note that htools is implemented |
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using the Haskell programming language. |
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.. vim: set textwidth=72 : |
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