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limits.go
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limits.go
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package aws
// ENILimit contains limits for adapter count and addresses
type ENILimit struct {
Adapters int
IPv4 int
IPv6 int
}
var eniLimits map[string]ENILimit
func init() {
// This table of limits referenced from:
// http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-eni.html
eniLimits = map[string]ENILimit{
"c1.medium": {2, 6, 0},
"c1.xlarge": {4, 15, 0},
"c3.large": {3, 10, 10},
"c3.xlarge": {4, 15, 15},
"c3.2xlarge": {4, 15, 15},
"c3.4xlarge": {8, 30, 30},
"c3.8xlarge": {8, 30, 30},
"c4.large": {3, 10, 10},
"c4.xlarge": {4, 15, 15},
"c4.2xlarge": {4, 15, 15},
"c4.4xlarge": {8, 30, 30},
"c4.8xlarge": {8, 30, 30},
"c5.xlarge": {4, 15, 15},
"c5.2xlarge": {4, 15, 15},
"c5.4xlarge": {8, 30, 30},
"c5.9xlarge": {8, 30, 30},
"c5.18xlarge": {15, 50, 50},
"cc2.8xlarge": {8, 30, 0},
"cg1.4xlarge": {8, 30, 0},
"cr1.8xlarge": {8, 30, 0},
"d2.xlarge": {4, 15, 15},
"d2.2xlarge": {4, 15, 15},
"d2.4xlarge": {8, 30, 30},
"d2.8xlarge": {8, 30, 30},
"f1.2xlarge": {4, 15, 15},
"f1.16xlarge": {8, 50, 50},
"g2.2xlarge": {4, 15, 0},
"g2.8xlarge": {8, 30, 0},
"g3.4xlarge": {8, 30, 30},
"g3.8xlarge": {8, 30, 30},
"g3.16xlarge": {15, 50, 50},
"hi1.4xlarge": {8, 30, 0},
"hs1.8xlarge": {8, 30, 0},
"i2.xlarge": {4, 15, 15},
"i2.2xlarge": {4, 15, 15},
"i2.4xlarge": {8, 30, 30},
"i2.8xlarge": {8, 30, 30},
"i3.large": {3, 10, 10},
"i3.xlarge": {4, 15, 15},
"i3.2xlarge": {4, 15, 15},
"i3.4xlarge": {8, 30, 30},
"i3.8xlarge": {8, 30, 30},
"i3.16xlarge": {15, 50, 50},
"m1.small": {2, 4, 0},
"m1.medium": {2, 6, 0},
"m1.large": {3, 10, 0},
"m1.xlarge": {4, 15, 0},
"m2.xlarge": {4, 15, 0},
"m2.2xlarge": {4, 30, 0},
"m2.4xlarge": {8, 30, 0},
"m3.medium": {2, 6, 0},
"m3.large": {3, 10, 0},
"m3.xlarge": {4, 15, 0},
"m3.2xlarge": {4, 30, 0},
"m4.large": {2, 10, 10},
"m4.xlarge": {4, 15, 15},
"m4.2xlarge": {4, 15, 15},
"m4.4xlarge": {8, 30, 30},
"m4.10xlarge": {8, 30, 30},
"m4.16xlarge": {8, 30, 30},
"p2.xlarge": {4, 15, 15},
"p2.8xlarge": {8, 30, 30},
"p2.16xlarge": {8, 30, 30},
"p3.2xlarge": {4, 15, 15},
"p3.8xlarge": {8, 30, 30},
"p3.16xlarge": {8, 30, 30},
"r3.large": {3, 10, 10},
"r3.xlarge": {4, 15, 15},
"r3.2xlarge": {4, 15, 15},
"r3.4xlarge": {8, 30, 30},
"r3.8xlarge": {8, 30, 30},
"r4.large": {3, 10, 10},
"r4.xlarge": {4, 15, 15},
"r4.2xlarge": {4, 15, 15},
"r4.4xlarge": {8, 30, 30},
"r4.8xlarge": {8, 30, 30},
"r4.16xlarge": {15, 50, 50},
"t1.micro": {2, 2, 0},
"t2.nano": {2, 2, 2},
"t2.micro": {2, 2, 2},
"t2.small": {2, 4, 4},
"t2.medium": {3, 6, 6},
"t2.large": {3, 12, 12},
"t2.xlarge": {3, 15, 15},
"t2.2xlarge": {3, 15, 15},
"x1.16xlarge": {8, 30, 30},
"x1.32xlarge": {8, 30, 30},
"x1e.32xlarge": {8, 30, 30},
}
}
// ENILimitsForInstanceType returns the limits for ENI for an instance type
// Returns a zero-limit for unknown instance types
func ENILimitsForInstanceType(itype string) (limit ENILimit) {
limit = eniLimits[itype]
return
}
// ENILimits returns the limits based on the system's instance type
func ENILimits() ENILimit {
id, err := getIDDoc()
if err != nil || id == nil {
return ENILimit{}
}
return ENILimitsForInstanceType(id.InstanceType)
}