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Add Cilium Operator IPAM #11083

Merged
merged 19 commits into from
May 13, 2020
Merged

Add Cilium Operator IPAM #11083

merged 19 commits into from
May 13, 2020

Commits on May 13, 2020

  1. pkg/ip: add IsIPv4 helper function 

    Signed-off-by: André Martins <andre@cilium.io>
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  2. k8s: remove waiting for node spec on k8s client init 

    Initializing k8s client should not require to wait for the node spec to
be retrieved from k8s.

Signed-off-by: André Martins <andre@cilium.io>
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  3. pkg/node: add function to parse a k8s Node into a CiliumNode 

    Signed-off-by: André Martins <andre@cilium.io>
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  4. operator: add Create function to nodeEventHandler 

    Distinguish between an update an create will be helpful for future
implementations of the `nodeEventHandler` interface.

Signed-off-by: André Martins <andre@cilium.io>
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  5. pkg/cidr: add CIDR Equal and Contains methods 

    These functions will be helpful for the cilium operator CIDR allocator.

Signed-off-by: André Martins <andre@cilium.io>
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  6. pkg/k8s: add operator status field to cilium node 

    This field will be useful to report cilium-operator error messages into
the CiliumNode structure.

Signed-off-by: André Martins <andre@cilium.io>
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  7. pkg/ipam: add Create and Delete methods to manage CiliumNodes 

    It will be helpful to use this interface to Create and Delete nodes
for the operator IPAM based mode.

Signed-off-by: André Martins <andre@cilium.io>
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  8. pkg/ipam: fix argument orders for Update[Status] methods 

    None of the implementation were respecting the arguments order of the
CiliumNodeGetterUpdater interface. This commit fixes all implementations
to respect such order.

Signed-off-by: André Martins <andre@cilium.io>
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  9. operator: accept nil origNode in CiliumNode Update* methods 

    The implementation of the Update* methods do not necessary require the
origNode to be provided. In case the origNode is nil the client should
try updating the node regardless.

Signed-off-by: André Martins <andre@cilium.io>
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  10. pkg/ipam: add allocator.NodeEventHandler interface 

    All allocators should share the same interface to handle node events so
we can create a common interface for this purpose.

Signed-off-by: André Martins <andre@cilium.io>
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  11. operator: remove duplicated code for IPAM modes 

    All IPAM providers share the same code, we can remove the duplicated
code.

Signed-off-by: André Martins <andre@cilium.io>
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  12. pkg/ipam: add podCIDR implementation 

    This commit introduces the podCIDR implementation based on the k8s
podCIDR allocation. This commit only introduces the package with the
podCIDR implementation and integration with cilium-agent and
cilium-operator will be made in follow up commits.

Signed-off-by: André Martins <andre@cilium.io>
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  13. ipam/metrics: expose metrics for public usage 

    Some methods and constructors are useful for public usage, so this
commit exposes them.

Signed-off-by: André Martins <andre@cilium.io>
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  14. add Cilium-operator podCIDR allocator 

    This commit adds the cilium-operator podCIDR allocator that is intended
to replace kubernetes podCIDR allocator, which might not always be
available. Cilium agents will rely on Cilium nodes to retrieve the
podCIDR allocated by the cilium-operator and will use that podCIDR to
allocate IPs for pods running on the nodes.

Signed-off-by: André Martins <andre@cilium.io>
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  15. install/kubernetes: enable Cilium-based podCIDR allocation by default 

    Signed-off-by: André Martins <andre@cilium.io>
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  16. docs: add IPAM based on Cilium Operator 

    Signed-off-by: André Martins <andre@cilium.io>
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  17. operator/Makefile: build all ipam managers in development 

    Signed-off-by: André Martins <andre@cilium.io>
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  18. pkg/ipam: allocate CiliumNode podCIDR once all CiliumNodes are synced 

    To avoid new CiliumNodes from getting a podCIDR of existing CiliumNodes,
when the Cilium Operator is starting, and synchronizing with k8s, the
allocation of new CiliumNodes should only happen once Cilium Operator
has synced with k8s.

Signed-off-by: André Martins <andre@cilium.io>
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  19. operator: rename ipam golang tags 

    This way all ipam provider tags will be consistent

Signed-off-by: André Martins <andre@cilium.io>
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