kubernetes: add multicluster support (#7266)

* kubernetes: add multicluster support

Add multicluster support via Multi-Cluster Services API (MCS-API) via a
new option `multiclusterZones` in the kubernetes plugin.

When some multicluster zones are passed to the kubernetes plugin, it
will start watching the ServiceImport objects and its associated
EndpointSlices.

Signed-off-by: Arthur Outhenin-Chalandre <arthur@cri.epita.fr>

* kubernetes: implement xfr support for multicluster zones

Signed-off-by: Arthur Outhenin-Chalandre <arthur@cri.epita.fr>

---------

Signed-off-by: Arthur Outhenin-Chalandre <arthur@cri.epita.fr>
This commit is contained in:
Arthur Outhenin-Chalandre
2025-05-19 07:58:16 +02:00
committed by GitHub
parent 76b199f829
commit 5c71bd0b87
23 changed files with 1634 additions and 298 deletions

View File

@@ -4,6 +4,7 @@ import (
"context"
"errors"
"fmt"
"slices"
"strconv"
"strings"
@@ -229,6 +230,8 @@ func ParseStanza(c *caddy.Controller) (*Kubernetes, error) {
overrides,
)
k8s.ClientConfig = config
case "multicluster":
k8s.opts.multiclusterZones = plugin.OriginsFromArgsOrServerBlock(c.RemainingArgs(), []string{})
default:
return nil, c.Errf("unknown property '%s'", c.Val())
}
@@ -238,6 +241,13 @@ func ParseStanza(c *caddy.Controller) (*Kubernetes, error) {
return nil, c.Errf("namespaces and namespace_labels cannot both be set")
}
for _, multiclusterZone := range k8s.opts.multiclusterZones {
if !slices.Contains(k8s.Zones, multiclusterZone) {
fmt.Println(k8s.Zones)
return nil, c.Errf("is not authoritative for the multicluster zone %s", multiclusterZone)
}
}
return k8s, nil
}