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resolve the bug when cluster CIDR is not /8

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We will have the rigth formula to generate correct maxCIDRs now.
Previous code assume cluster CIDR is /8 which may not be true.
Now it generates maxCIDR based on the info of cluster IP.
This commit is contained in:
Weixu Zhuang 2016-01-12 17:29:18 -08:00
parent e7f29514ab
commit 2af68d25b8
1 changed files with 4 additions and 2 deletions
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6
pkg/controller/node/nodecontroller.go
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@ -19,6 +19,7 @@ package node
import (
"errors"
"fmt"
"math"
"net"
"strconv"
"strings"
@ -211,8 +212,9 @@ func (nc *NodeController) generateAvailableCIDRs() {
nc.generatedCIDR = true
// Generate all available CIDRs here, since there will not be manay
// available CIDRs. Set will be small, it will use less than 1MB memory
cidrIP := nc.clusterCIDR.IP.To4()
nc.maxCIDRs = (256-int(cidrIP[1]))*256 - int(cidrIP[2])
cidrSize, _ := nc.clusterCIDR.Mask.Size()
nc.maxCIDRs = int(math.Pow(2, (float64)(24-cidrSize)))
for i := 0; i <= nc.maxCIDRs; i++ {
nc.availableCIDRs.Insert(i)