github-personal/talos-cloud-controller-manager
1
0
Fork 0
mirror of https://github.com/outbackdingo/talos-cloud-controller-manager.git synced 2026-01-28 02:20:18 +00:00
Code Issues Packages Projects Releases Wiki Activity

feat: ipv6 small subnets

Browse Source 
Set a limit of 32 pods per node in your Kubernetes cluster.
Some cloud providers offer a /123 IPv6 subnet for nodes, which is typically sufficient for most use cases.

Signed-off-by: Serge Logvinov <serge.logvinov@sinextra.dev>
This commit is contained in:
Serge Logvinov
2024-10-21 18:47:21 +03:00
parent 68d41338b1
commit 82009ed898
2 changed files with 16 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
pkg/nodeipam/ipam/cloud_allocator.go
View File

@@ -628,8 +628,10 @@ func (r *cloudAllocator) addCIDRSet(cidr string) error {
} }
mask = 80 mask = 80
case mask > 120: case mask > 123:
return fmt.Errorf("CIDRv6 is too small: %v", subnet.String()) return fmt.Errorf("CIDRv6 is too small: %v", subnet.String())
case mask > 119:
break
default: default:
mask += 16 mask += 16
} }

14
pkg/nodeipam/ipam/cloud_allocator_test.go
View File

@@ -65,11 +65,23 @@ func TestAddCIDRSet(t *testing.T) {
expectedClusterCIDR: netip.MustParsePrefix("2000::aaaa:bbbb:cccc:0/112"), expectedClusterCIDR: netip.MustParsePrefix("2000::aaaa:bbbb:cccc:0/112"),
}, },
{ {
name: "CIDRv6 with mask size 120", name: "CIDRv6 with mask size 120, 256 pods",
cidr: "2000::aaaa:bbbb:cccc:123/120", cidr: "2000::aaaa:bbbb:cccc:123/120",
expectedSize: 1, expectedSize: 1,
expectedClusterCIDR: netip.MustParsePrefix("2000::aaaa:bbbb:cccc:100/120"), expectedClusterCIDR: netip.MustParsePrefix("2000::aaaa:bbbb:cccc:100/120"),
}, },
{
name: "CIDRv6 with mask size 122, 64 pods",
cidr: "2000::aaaa:bbbb:cccc:123/122",
expectedSize: 1,
expectedClusterCIDR: netip.MustParsePrefix("2000::aaaa:bbbb:cccc:100/122"),
},
{
name: "CIDRv6 with mask size 123, 32 pods",
cidr: "2000::aaaa:bbbb:cccc:123/123",
expectedSize: 1,
expectedClusterCIDR: netip.MustParsePrefix("2000::aaaa:bbbb:cccc:120/123"),
},
{ {
name: "CIDRv6 with mask size 124", name: "CIDRv6 with mask size 124",
cidr: "2000::aaaa:bbbb:cccc:123/124", cidr: "2000::aaaa:bbbb:cccc:123/124",