/
limits.go
412 lines (392 loc) · 18.6 KB
/
limits.go
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// Copyright 2019-2020 Authors of Cilium
// Copyright 2017 Lyft, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package limits
import (
"context"
"fmt"
"strconv"
"strings"
ipamTypes "github.com/cilium/cilium/pkg/ipam/types"
"github.com/cilium/cilium/pkg/lock"
"github.com/aws/aws-sdk-go-v2/aws"
"github.com/aws/aws-sdk-go-v2/aws/external"
"github.com/aws/aws-sdk-go-v2/service/ec2"
)
// limit contains limits for adapter count and addresses. The mappings will be
// updated from agent configuration at bootstrap time.
//
// Source: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-eni.html?shortFooter=true#AvailableIpPerENI
var limits = struct {
lock.RWMutex
m map[string]ipamTypes.Limits
}{
m: map[string]ipamTypes.Limits{
"a1.medium": {Adapters: 2, IPv4: 4, IPv6: 4},
"a1.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"a1.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"a1.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"a1.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"a1.metal": {Adapters: 8, IPv4: 30, IPv6: 30},
"c1.medium": {Adapters: 2, IPv4: 6, IPv6: 0},
"c1.xlarge": {Adapters: 4, IPv4: 15, IPv6: 0},
"c3.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"c3.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"c3.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"c3.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"c3.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"c4.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"c4.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"c4.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"c4.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"c4.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"c5.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"c5.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"c5.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"c5.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"c5.9xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"c5.12xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"c5.18xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"c5.24xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"c5.metal": {Adapters: 15, IPv4: 50, IPv6: 50},
"c5d.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"c5d.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"c5d.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"c5d.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"c5d.9xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"c5d.18xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"c5d.metal": {Adapters: 15, IPv4: 50, IPv6: 50},
"c5n.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"c5n.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"c5n.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"c5n.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"c5n.9xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"c5n.18xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"c5n.metal": {Adapters: 15, IPv4: 50, IPv6: 50},
"cc2.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 0},
"cr1.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 0},
"d2.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"d2.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"d2.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"d2.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"f1.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"f1.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"f1.16xlarge": {Adapters: 8, IPv4: 50, IPv6: 50},
"g2.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 0},
"g2.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 0},
"g3s.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"g3.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"g3.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"g3.16xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"g4dn.xlarge": {Adapters: 3, IPv4: 10, IPv6: 10},
"g4dn.2xlarge": {Adapters: 3, IPv4: 10, IPv6: 10},
"g4dn.4xlarge": {Adapters: 3, IPv4: 10, IPv6: 10},
"g4dn.8xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"g4dn.12xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"g4dn.16xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"h1.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"h1.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"h1.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"h1.16xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"hs1.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 0},
"i2.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"i2.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"i2.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"i2.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"i3.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"i3.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"i3.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"i3.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"i3.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"i3.16xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"i3.metal": {Adapters: 15, IPv4: 50, IPv6: 50},
"i3en.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"i3en.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"i3en.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"i3en.3xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"i3en.6xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"i3en.12xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"i3en.24xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"i3en.metal": {Adapters: 15, IPv4: 50, IPv6: 50},
"inf1.xlarge": {Adapters: 4, IPv4: 10, IPv6: 10},
"inf1.2xlarge": {Adapters: 4, IPv4: 10, IPv6: 10},
"inf1.6xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"inf1.24xlarge": {Adapters: 15, IPv4: 30, IPv6: 30},
"m1.small": {Adapters: 2, IPv4: 4, IPv6: 0},
"m1.medium": {Adapters: 2, IPv4: 6, IPv6: 0},
"m1.large": {Adapters: 3, IPv4: 10, IPv6: 0},
"m1.xlarge": {Adapters: 4, IPv4: 15, IPv6: 0},
"m2.xlarge": {Adapters: 4, IPv4: 15, IPv6: 0},
"m2.2xlarge": {Adapters: 4, IPv4: 30, IPv6: 0},
"m2.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 0},
"m3.medium": {Adapters: 2, IPv4: 6, IPv6: 0},
"m3.large": {Adapters: 3, IPv4: 10, IPv6: 0},
"m3.xlarge": {Adapters: 4, IPv4: 15, IPv6: 0},
"m3.2xlarge": {Adapters: 4, IPv4: 30, IPv6: 0},
"m4.large": {Adapters: 2, IPv4: 10, IPv6: 10},
"m4.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"m4.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"m4.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m4.10xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m4.16xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m5.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"m5.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"m5.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"m5.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m5.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m5.12xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m5.16xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"m5.24xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"m5.metal": {Adapters: 15, IPv4: 50, IPv6: 50},
"m5a.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"m5a.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"m5a.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"m5a.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m5a.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m5a.12xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m5a.16xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"m5a.24xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"m5ad.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"m5ad.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"m5ad.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"m5ad.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m5ad.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m5ad.12xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m5ad.16xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"m5ad.24xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"m5d.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"m5d.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"m5d.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"m5d.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m5d.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m5d.12xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m5d.16xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"m5d.24xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"m5d.metal": {Adapters: 15, IPv4: 50, IPv6: 50},
"m5dn.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"m5dn.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"m5dn.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"m5dn.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m5dn.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m5dn.12xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m5dn.16xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"m5dn.24xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"m5n.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"m5n.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"m5n.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"m5n.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m5n.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m5n.12xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m5n.16xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"m5n.24xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"m6g.medium": {Adapters: 2, IPv4: 4, IPv6: 4},
"m6g.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"m6g.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"m6g.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"m6g.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m6g.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m6g.12xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"m6g.16xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"m6g.metal": {Adapters: 15, IPv4: 50, IPv6: 50},
"p2.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"p2.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"p2.16xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"p3.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"p3.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"p3.16xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"p3dn.24xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"r3.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"r3.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"r3.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"r3.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"r3.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"r4.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"r4.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"r4.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"r4.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"r4.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"r4.16xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"r5.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"r5.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"r5.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"r5.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"r5.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"r5.12xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"r5.16xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"r5.24xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"r5.metal": {Adapters: 15, IPv4: 50, IPv6: 50},
"r5a.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"r5a.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"r5a.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"r5a.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"r5a.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"r5a.12xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"r5a.16xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"r5a.24xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"r5ad.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"r5ad.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"r5ad.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"r5ad.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"r5ad.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"r5ad.12xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"r5ad.16xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"r5ad.24xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"r5d.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"r5d.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"r5d.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"r5d.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"r5d.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"r5d.12xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"r5d.16xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"r5d.24xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"r5d.metal": {Adapters: 15, IPv4: 50, IPv6: 50},
"r5dn.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"r5dn.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"r5dn.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"r5dn.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"r5dn.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"r5dn.12xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"r5dn.16xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"r5dn.24xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"r5n.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"r5n.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"r5n.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"r5n.4xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"r5n.8xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"r5n.12xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"r5n.16xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"r5n.24xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"t1.micro": {Adapters: 2, IPv4: 2, IPv6: 0},
"t2.nano": {Adapters: 2, IPv4: 2, IPv6: 2},
"t2.micro": {Adapters: 2, IPv4: 2, IPv6: 2},
"t2.small": {Adapters: 3, IPv4: 4, IPv6: 4},
"t2.medium": {Adapters: 3, IPv4: 6, IPv6: 6},
"t2.large": {Adapters: 3, IPv4: 12, IPv6: 12},
"t2.xlarge": {Adapters: 3, IPv4: 15, IPv6: 15},
"t2.2xlarge": {Adapters: 3, IPv4: 15, IPv6: 15},
"t3.nano": {Adapters: 2, IPv4: 2, IPv6: 2},
"t3.micro": {Adapters: 2, IPv4: 2, IPv6: 2},
"t3.small": {Adapters: 3, IPv4: 4, IPv6: 4},
"t3.medium": {Adapters: 3, IPv4: 6, IPv6: 6},
"t3.large": {Adapters: 3, IPv4: 12, IPv6: 12},
"t3.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"t3.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"t3a.nano": {Adapters: 2, IPv4: 2, IPv6: 2},
"t3a.micro": {Adapters: 2, IPv4: 2, IPv6: 2},
"t3a.small": {Adapters: 2, IPv4: 4, IPv6: 4},
"t3a.medium": {Adapters: 3, IPv4: 6, IPv6: 6},
"t3a.large": {Adapters: 3, IPv4: 12, IPv6: 12},
"t3a.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"t3a.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"u-6tb1.metal": {Adapters: 5, IPv4: 30, IPv6: 30},
"u-9tb1.metal": {Adapters: 5, IPv4: 30, IPv6: 30},
"u-12tb1.metal": {Adapters: 5, IPv4: 30, IPv6: 30},
"u-18tb1.metal": {Adapters: 15, IPv4: 50, IPv6: 50},
"u-24tb1.metal": {Adapters: 15, IPv4: 50, IPv6: 50},
"x1.16xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"x1.32xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"x1e.xlarge": {Adapters: 3, IPv4: 10, IPv6: 10},
"x1e.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"x1e.4xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"x1e.8xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"x1e.16xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"x1e.32xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"z1d.large": {Adapters: 3, IPv4: 10, IPv6: 10},
"z1d.xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"z1d.2xlarge": {Adapters: 4, IPv4: 15, IPv6: 15},
"z1d.3xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"z1d.6xlarge": {Adapters: 8, IPv4: 30, IPv6: 30},
"z1d.12xlarge": {Adapters: 15, IPv4: 50, IPv6: 50},
"z1d.metal": {Adapters: 15, IPv4: 50, IPv6: 50},
},
}
// Get returns the instance limits of a particular instance type.
func Get(instanceType string) (limit ipamTypes.Limits, ok bool) {
limits.RLock()
limit, ok = limits.m[instanceType]
limits.RUnlock()
return
}
// UpdateFromUserDefinedMappings updates limits from the given map.
func UpdateFromUserDefinedMappings(m map[string]string) (err error) {
limits.Lock()
defer limits.Unlock()
for instanceType, limitString := range m {
limit, err := parseLimitString(limitString)
if err != nil {
return err
}
// Add or overwrite limits
limits.m[instanceType] = limit
}
return nil
}
// UpdateFromEC2API updates limits from the EC2 API via calling
// https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_DescribeInstanceTypes.html.
func UpdateFromEC2API(ctx context.Context) error {
cfg, err := external.LoadDefaultAWSConfig()
if err != nil {
return fmt.Errorf("unable to load AWS configuration: %s", err)
}
ec2Client := ec2.New(cfg)
instanceTypeInfos := []ec2.InstanceTypeInfo{}
describeInstanceTypes := &ec2.DescribeInstanceTypesInput{}
req := ec2Client.DescribeInstanceTypesRequest(describeInstanceTypes)
describeInstanceTypesResponse, err := req.Send(ctx)
if err != nil {
return err
}
instanceTypeInfos = append(instanceTypeInfos, describeInstanceTypesResponse.InstanceTypes...)
for describeInstanceTypesResponse.NextToken != nil {
describeInstanceTypes := &ec2.DescribeInstanceTypesInput{
NextToken: describeInstanceTypesResponse.NextToken,
}
req = ec2Client.DescribeInstanceTypesRequest(describeInstanceTypes)
describeInstanceTypesResponse, err = req.Send(ctx)
if err != nil {
return err
}
instanceTypeInfos = append(instanceTypeInfos, describeInstanceTypesResponse.InstanceTypes...)
}
limits.Lock()
defer limits.Unlock()
for _, instanceTypeInfo := range instanceTypeInfos {
instanceType := string(instanceTypeInfo.InstanceType)
adapterLimit := aws.Int64Value(instanceTypeInfo.NetworkInfo.MaximumNetworkInterfaces)
ipv4PerAdapter := aws.Int64Value(instanceTypeInfo.NetworkInfo.Ipv4AddressesPerInterface)
ipv6PerAdapter := aws.Int64Value(instanceTypeInfo.NetworkInfo.Ipv6AddressesPerInterface)
limits.m[instanceType] = ipamTypes.Limits{
Adapters: int(adapterLimit),
IPv4: int(ipv4PerAdapter),
IPv6: int(ipv6PerAdapter),
}
}
return nil
}
// parseLimitString returns the Limits struct parsed from config string.
func parseLimitString(limitString string) (limit ipamTypes.Limits, err error) {
intSlice := make([]int, 3)
stringSlice := strings.Split(strings.ReplaceAll(limitString, " ", ""), ",")
if len(stringSlice) != 3 {
return limit, fmt.Errorf("invalid limit value")
}
for i, s := range stringSlice {
intLimit, err := strconv.Atoi(s)
if err != nil {
return limit, err
}
intSlice[i] = intLimit
}
return ipamTypes.Limits{Adapters: intSlice[0], IPv4: intSlice[1], IPv6: intSlice[2]}, nil
}