spread: add LXD VM backend #185
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| for ifacename, ifaceconf := range sjson.State.Network { | ||
| if ifacename == "lo" { | ||
| // ignore loopback interface | ||
| continue | ||
| } | ||
| for _, addr := range ifaceconf.Addresses { | ||
| if addr.Family == "inet" && addr.Address != "" { | ||
| return addr.Address, nil | ||
| } | ||
| } |
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yup, I think I mentioned somewhere that I had exact same change :) I will rebase as needed
Add a new backend named lxd-vm, which is essentially VMs orchestrated through LXD. Signed-off-by: Maciej Borzecki <maciej.borzecki@canonical.com>
LXD VMs, especially when running in GCP take quite long to have IP addresses assigned to them. Use a longer timeout in this case. Signed-off-by: Maciej Borzecki <maciej.borzecki@canonical.com>
Signed-off-by: Maciej Borzecki <maciej.borzecki@canonical.com>
… and lxd-vm backends Signed-off-by: Maciej Borzecki <maciej.borzecki@canonical.com>
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tests/lxd-vm/spread.yaml
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| backends: | ||
| lxd-vm: | ||
| systems: | ||
| - ubuntu-20.04 |
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This should probably also test 16.04, 18.04 and 22.04 as per #182 (assuming there are VM images for all old releases as well)
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16.04 and 18.04 don't work in a VM, lxd-agent does not come start, so I've limited this to 20.04 and 22.04 for now. Another issue I ran into, is that tests need to be run one by one, otherwise the host runs out of disk space.
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Eh, and 22.04 will only work when #184 or other similar fix lands.
Prepare the test to run on multiple systems and mention why Ubuntu 16.04, 18.04, and 22.04 are not currently working. Signed-off-by: Maciej Borzecki <maciej.borzecki@canonical.com>
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I'm seeing this message on execution using the lxd-vm backend, it can also be adjusted to mention virtual machine instead of container: |
Signed-off-by: Maciej Borzecki <maciej.borzecki@canonical.com>
Signed-off-by: Maciej Borzecki <maciej.borzecki@canonical.com>
Signed-off-by: Maciej Borzecki <maciej.borzecki@canonical.com>
…bboozzoo/lxd-vm-backend
| } | ||
| } | ||
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| func LXDVM(p *Project, b *Backend, o *Options) Provider { |
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In light of Spread already having support for declaring multiple named backends, choosing the provider with the type keyword, what benefit does adding a new provider type give?
| args = append(args, "-c", fmt.Sprintf("limits.memory=%dMiB", mem)) | ||
| } | ||
| if system.Storage != Size(0) { | ||
| args = append(args, "-d", fmt.Sprintf("root,size=%d", system.Storage)) |
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Containers could also benefit from support for the storage keyword.
| if p.vm { | ||
| // VM may take considerably longer to start | ||
| // TODO: should this be configurable? | ||
| maxTimeout = 180 * time.Second |
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I did not see this in my testing but it is probably true, are you using emulated VMs?
After the VM has an address, subsequent calls to lxc exec will fail until the lxd-agent inside the VM has started, ab8232d could be useful for this.
| } | ||
| if system.Storage != Size(0) { | ||
| args = append(args, "-d", fmt.Sprintf("root,size=%d", system.Storage)) | ||
| } |
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I see no way to specify the number of vCPUs for the VM. This is an important requirement as the default of 1 vCPU is most likely not sufficient.
In 804d1ee generic support for the LXD instance type concept is introduced driven by the already existing plan keyword.
LXD applies these constraints both to containers and VMs.
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Hello! Out of curiosity, any updates on this/how we might progress on it? |
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Like LXD but with a twist, as instead of containers, it's using VMs. This is an improvement over the qemu backend, as LXD --vm generally runs with a virtio focused configuration ensuring that we're using hardware efficiently.
Another upside is that one does not need to build a special VM image anymore, LXD handles everything through cloud-init or the agent.