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Remove bugy chains as well to clean up old chain/rule

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This commit is contained in:
Chun Chen 2017-11-08 14:41:50 +08:00
parent 932cf077ee
commit 5d23dd82ab
2 changed files with 21 additions and 12 deletions
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9
pkg/kubelet/network/hostport/hostport_manager.go
View File

@ -178,6 +178,8 @@ func (hm *hostportManager) Remove(id string, podPortMapping *PodPortMapping) (er
chainsToRemove := []utiliptables.Chain{}
for _, pm := range hostportMappings {
chainsToRemove = append(chainsToRemove, getHostportChain(id, pm))
// TODO remove this, please refer https://github.com/kubernetes/kubernetes/pull/55153
chainsToRemove = append(chainsToRemove, getBugyHostportChain(id, pm))
}
// remove rules that consists of target chains
@ -253,6 +255,13 @@ func getHostportChain(id string, pm *PortMapping) utiliptables.Chain {
return utiliptables.Chain(kubeHostportChainPrefix + encoded[:16])
}
// TODO remove this, please refer https://github.com/kubernetes/kubernetes/pull/55153
func getBugyHostportChain(id string, pm *PortMapping) utiliptables.Chain {
hash := sha256.Sum256([]byte(id + string(pm.HostPort) + string(pm.Protocol)))
encoded := base32.StdEncoding.EncodeToString(hash[:])
return utiliptables.Chain(kubeHostportChainPrefix + encoded[:16])
}
// gatherHostportMappings returns all the PortMappings which has hostport for a pod
func gatherHostportMappings(podPortMapping *PodPortMapping) []*PortMapping {
mappings := []*PortMapping{}

24
pkg/kubelet/network/hostport/hostport_manager_test.go
View File

@ -144,21 +144,21 @@ func TestHostportManager(t *testing.T) {
`:OUTPUT - [0:0]`: true,
`:PREROUTING - [0:0]`: true,
`:POSTROUTING - [0:0]`: true,
`:KUBE-HP-4YVONL46AKYWSKS3 - [0:0]`: true,
`:KUBE-HP-7THKRFSEH4GIIXK7 - [0:0]`: true,
`:KUBE-HP-5N7UH5JAXCVP5UJR - [0:0]`: true,
"-A KUBE-HOSTPORTS -m comment --comment \"pod3_ns1 hostport 8443\" -m tcp -p tcp --dport 8443 -j KUBE-HP-5N7UH5JAXCVP5UJR": true,
"-A KUBE-HOSTPORTS -m comment --comment \"pod1_ns1 hostport 8081\" -m udp -p udp --dport 8081 -j KUBE-HP-7THKRFSEH4GIIXK7": true,
"-A KUBE-HOSTPORTS -m comment --comment \"pod1_ns1 hostport 8080\" -m tcp -p tcp --dport 8080 -j KUBE-HP-4YVONL46AKYWSKS3": true,
`:KUBE-HP-IJHALPHTORMHHPPK - [0:0]`: true,
`:KUBE-HP-63UPIDJXVRSZGSUZ - [0:0]`: true,
`:KUBE-HP-WFBOALXEP42XEMJK - [0:0]`: true,
"-A KUBE-HOSTPORTS -m comment --comment \"pod3_ns1 hostport 8443\" -m tcp -p tcp --dport 8443 -j KUBE-HP-WFBOALXEP42XEMJK": true,
"-A KUBE-HOSTPORTS -m comment --comment \"pod1_ns1 hostport 8081\" -m udp -p udp --dport 8081 -j KUBE-HP-63UPIDJXVRSZGSUZ": true,
"-A KUBE-HOSTPORTS -m comment --comment \"pod1_ns1 hostport 8080\" -m tcp -p tcp --dport 8080 -j KUBE-HP-IJHALPHTORMHHPPK": true,
"-A OUTPUT -m comment --comment \"kube hostport portals\" -m addrtype --dst-type LOCAL -j KUBE-HOSTPORTS": true,
"-A PREROUTING -m comment --comment \"kube hostport portals\" -m addrtype --dst-type LOCAL -j KUBE-HOSTPORTS": true,
"-A POSTROUTING -m comment --comment \"SNAT for localhost access to hostports\" -o cbr0 -s 127.0.0.0/8 -j MASQUERADE": true,
"-A KUBE-HP-4YVONL46AKYWSKS3 -m comment --comment \"pod1_ns1 hostport 8080\" -s 10.1.1.2/32 -j KUBE-MARK-MASQ": true,
"-A KUBE-HP-4YVONL46AKYWSKS3 -m comment --comment \"pod1_ns1 hostport 8080\" -m tcp -p tcp -j DNAT --to-destination 10.1.1.2:80": true,
"-A KUBE-HP-7THKRFSEH4GIIXK7 -m comment --comment \"pod1_ns1 hostport 8081\" -s 10.1.1.2/32 -j KUBE-MARK-MASQ": true,
"-A KUBE-HP-7THKRFSEH4GIIXK7 -m comment --comment \"pod1_ns1 hostport 8081\" -m udp -p udp -j DNAT --to-destination 10.1.1.2:81": true,
"-A KUBE-HP-5N7UH5JAXCVP5UJR -m comment --comment \"pod3_ns1 hostport 8443\" -s 10.1.1.4/32 -j KUBE-MARK-MASQ": true,
"-A KUBE-HP-5N7UH5JAXCVP5UJR -m comment --comment \"pod3_ns1 hostport 8443\" -m tcp -p tcp -j DNAT --to-destination 10.1.1.4:443": true,
"-A KUBE-HP-IJHALPHTORMHHPPK -m comment --comment \"pod1_ns1 hostport 8080\" -s 10.1.1.2/32 -j KUBE-MARK-MASQ": true,
"-A KUBE-HP-IJHALPHTORMHHPPK -m comment --comment \"pod1_ns1 hostport 8080\" -m tcp -p tcp -j DNAT --to-destination 10.1.1.2:80": true,
"-A KUBE-HP-63UPIDJXVRSZGSUZ -m comment --comment \"pod1_ns1 hostport 8081\" -s 10.1.1.2/32 -j KUBE-MARK-MASQ": true,
"-A KUBE-HP-63UPIDJXVRSZGSUZ -m comment --comment \"pod1_ns1 hostport 8081\" -m udp -p udp -j DNAT --to-destination 10.1.1.2:81": true,
"-A KUBE-HP-WFBOALXEP42XEMJK -m comment --comment \"pod3_ns1 hostport 8443\" -s 10.1.1.4/32 -j KUBE-MARK-MASQ": true,
"-A KUBE-HP-WFBOALXEP42XEMJK -m comment --comment \"pod3_ns1 hostport 8443\" -m tcp -p tcp -j DNAT --to-destination 10.1.1.4:443": true,
`COMMIT`: true,
}
for _, line := range lines {