migrated to external IP allocator

2021-09-26 20:20:43 +02:00 · 2021-09-26 20:20:43 +02:00 · e2449b425e
commit e2449b425e
parent 8672452033
15 changed files with 478 additions and 194 deletions
--- a/cmd/haproxy-lb/main.go
+++ b/cmd/haproxy-lb/main.go
@ -1,10 +1,12 @@
 package main

 import (
+	"errors"
 	"flag"
 	"os"
 	"os/signal"
 	"syscall"
+	"time"

 	"git.giftfish.de/ston1th/haproxy-lb/pkg/api"
 	"git.giftfish.de/ston1th/haproxy-lb/pkg/cluster"
@ -69,17 +71,26 @@ func main() {
 		}
 	}()
 	go func() {
-		sig := make(chan os.Signal)
+		sig := make(chan os.Signal, 1)
 		signal.Notify(sig, syscall.SIGHUP)
 		for {
 			<-sig
 			c.Stepdown()
 		}
 	}()
-	sigs := make(chan os.Signal)
+	sigs := make(chan os.Signal, 1)
 	signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
 	s := <-sigs
 	log.Info("haproxy-lb shutdown", "signal", s.String())
+	go func() {
+		select {
+		case <-time.After(time.Second * 10):
+			log.Error(errors.New("shutdown took longer than 10 seconds"), "shutdown forced")
+		case <-sigs:
+			log.Error(errors.New("force shutdown triggerd"), "shutdown forced")
+		}
+		os.Exit(1)
+	}()
 	c.Stop()
 	log.Info("haproxy-lb stopped")
 }
--- a/go.mod
+++ b/go.mod
@ -3,6 +3,7 @@ module git.giftfish.de/ston1th/haproxy-lb
 go 1.16

 require (
+	git.giftfish.de/ston1th/netalloc v0.0.0-20210926174801-c39acaee43a5
 	git.giftfish.de/ston1th/raftbbolt v0.0.0-20201114165203-b85c94bfc9b0
 	github.com/armon/go-metrics v0.3.6 // indirect
 	github.com/coreos/go-systemd/v22 v22.2.0 // indirect
@ -17,7 +18,6 @@ require (
 	github.com/hashicorp/raft v1.2.0
 	github.com/mdlayher/arp v0.0.0-20191213142603-f72070a231fc
 	github.com/mdlayher/ethernet v0.0.0-20190606142754-0394541c37b7
-	github.com/mikioh/ipaddr v0.0.0-20190404000644-d465c8ab6721
 	github.com/vishvananda/netlink v1.1.0
 	github.com/vishvananda/netns v0.0.0-20210104183010-2eb08e3e575f // indirect
 	go.etcd.io/etcd/client/v3 v3.5.0-alpha.0
@ -26,7 +26,6 @@ require (
 	golang.org/x/crypto v0.0.0-20210220033148-5ea612d1eb83
 	golang.org/x/net v0.0.0-20210226172049-e18ecbb05110 // indirect
 	golang.org/x/sys v0.0.0-20210305230114-8fe3ee5dd75b // indirect
-	golang.org/x/text v0.3.5 // indirect
 	google.golang.org/genproto v0.0.0-20210303154014-9728d6b83eeb // indirect
 	google.golang.org/grpc v1.36.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0
--- a/go.sum
+++ b/go.sum
@ -1,19 +1,36 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+git.giftfish.de/ston1th/netalloc v0.0.0-20210926155347-8b15c38eab5e h1:i6/z8yhUwiAFgbRUjLb4FTylsLLo+LJpbmJ2dPjYZAE=
+git.giftfish.de/ston1th/netalloc v0.0.0-20210926155347-8b15c38eab5e/go.mod h1:ECRm6vIqNEDXBgJmKyXaBAWucdCzCVH5FG9Hfk6QX0E=
+git.giftfish.de/ston1th/netalloc v0.0.0-20210926173058-aac88a8fadf4 h1:yktjmcxmooXQgmt1B09b2ZSpd4QeGlbuqIKGrou+Mfo=
+git.giftfish.de/ston1th/netalloc v0.0.0-20210926173058-aac88a8fadf4/go.mod h1:ECRm6vIqNEDXBgJmKyXaBAWucdCzCVH5FG9Hfk6QX0E=
+git.giftfish.de/ston1th/netalloc v0.0.0-20210926174801-c39acaee43a5 h1:DQzBQS2lYd4FrHHvVnqIEEfKUEXfbj/NwAAq+vRC4dg=
+git.giftfish.de/ston1th/netalloc v0.0.0-20210926174801-c39acaee43a5/go.mod h1:ECRm6vIqNEDXBgJmKyXaBAWucdCzCVH5FG9Hfk6QX0E=
 git.giftfish.de/ston1th/raftbbolt v0.0.0-20201114165203-b85c94bfc9b0 h1:DU0PVdA2EHz2LFGEdkwgJopL9HQh5nFC9GJ7oqzZ300=
 git.giftfish.de/ston1th/raftbbolt v0.0.0-20201114165203-b85c94bfc9b0/go.mod h1:9dF/aHYkXts6/6oVyJ+vzXCn7NURDaoREaanX0aspx0=
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+github.com/asaskevich/govalidator v0.0.0-20200907205600-7a23bdc65eef/go.mod h1:WaHUgvxTVq04UNunO+XhnAqY/wQc+bxr74GqbsZ/Jqw=
+github.com/aws/aws-sdk-go v1.34.28/go.mod h1:H7NKnBqNVzoTJpGfLrQkkD+ytBA93eiDYi/+8rV9s48=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
@ -30,10 +47,13 @@ github.com/coreos/go-semver v0.3.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3Ee
 github.com/coreos/go-systemd/v22 v22.1.0/go.mod h1:xO0FLkIi5MaZafQlIrOotqXZ90ih+1atmu1JpKERPPk=
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+github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
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+github.com/docker/go-units v0.3.3/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
+github.com/docker/go-units v0.4.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
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@ -44,13 +64,123 @@ github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5Kwzbycv
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@ -164,23 +331,41 @@ github.com/prometheus/procfs v0.0.0-20181204211112-1dc9a6cbc91a/go.mod h1:c3At6R
 github.com/prometheus/procfs v0.0.2/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsTZCD3I8kEA=
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@ -191,6 +376,14 @@ go.etcd.io/etcd/client/v3 v3.5.0-alpha.0 h1:dr1EOILak2pu4Nf5XbRIOCNIBjcz6UmkQd7h
 go.etcd.io/etcd/client/v3 v3.5.0-alpha.0/go.mod h1:wKt7jgDgf/OfKiYmCq5WFGxOFAkVMLxiiXgLDFhECr8=
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@ -202,8 +395,14 @@ go.uber.org/zap v1.16.0 h1:uFRZXykJGK9lLY4HtgSw44DnIcAM+kRBP7x5m+NpAOM=
 go.uber.org/zap v1.16.0/go.mod h1:MA8QOfq0BHJwdXa996Y4dYkAqRKB8/1K1QMMZVaNZjQ=
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@ -219,20 +418,29 @@ golang.org/x/mod v0.3.0 h1:RM4zey1++hCTbCVQfnWeKs9/IEsaBLA8vTkd0WVtmH4=
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 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110 h1:qWPm9rbaAMKs8Bq/9LRpbMqxWRVUAQwMI9fVrssnTfw=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
@ -240,6 +448,8 @@ golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d/go.mod h1:gOpvHmFTYa4Iltr
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20190412183630-56d357773e84/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@ -249,12 +459,17 @@ golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5h
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190321052220-f7bb7a8bee54/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190403152447-81d4e9dc473e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190418153312-f0ce4c0180be/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190419153524-e8e3143a4f4a/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190523142557-0e01d883c5c5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190531175056-4c3a928424d2/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190606122018-79a91cf218c4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190606203320-7fc4e5ec1444/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190616124812-15dcb6c0061f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191008105621-543471e840be/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@ -262,6 +477,7 @@ golang.org/x/sys v0.0.0-20200122134326-e047566fdf82/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20200202164722-d101bd2416d5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200217220822-9197077df867/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201009025420-dfb3f7c4e634/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@ -270,16 +486,25 @@ golang.org/x/sys v0.0.0-20210305230114-8fe3ee5dd75b/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.4/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.5 h1:i6eZZ+zk0SOf0xgBpEpPD18qWcJda6q1sxt3S0kzyUQ=
 golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20181030221726-6c7e314b6563/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20190125232054-d66bd3c5d5a6/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
 golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
+golang.org/x/tools v0.0.0-20190329151228-23e29df326fe/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
+golang.org/x/tools v0.0.0-20190416151739-9c9e1878f421/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
+golang.org/x/tools v0.0.0-20190420181800-aa740d480789/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190424220101-1e8e1cfdf96b/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
+golang.org/x/tools v0.0.0-20190531172133-b3315ee88b7d/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
+golang.org/x/tools v0.0.0-20190614205625-5aca471b1d59/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
+golang.org/x/tools v0.0.0-20190617190820-da514acc4774/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
 golang.org/x/tools v0.0.0-20190621195816-6e04913cbbac/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
 golang.org/x/tools v0.0.0-20191029041327-9cc4af7d6b2c/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
@ -322,8 +547,9 @@ google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlba
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f h1:BLraFXnmrev5lT+xlilqcH8XK9/i0At2xKjWk4p6zsU=
+gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
@ -331,8 +557,14 @@ gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20200605160147-a5ece683394c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.1-2019.2.3 h1:3JgtbtFHMiCmsznwGVTUWbgGov+pVqnlf1dEJTNAXeM=
--- a/pkg/alloc/alloc.go
+++ b/pkg/alloc/alloc.go
@ -1,113 +0,0 @@
-package alloc
-
-import (
-	"context"
-	"fmt"
-	"net"
-	"strings"
-	"sync"
-
-	"git.giftfish.de/ston1th/haproxy-lb/pkg/db"
-	"github.com/mikioh/ipaddr"
-)
-
-type Alloc struct {
-	sync.Mutex
-	db      *db.DB
-	pool    []*net.IPNet
-	gateway *net.IPNet
-}
-
-func NewAlloc(db *db.DB, cidrs []string, gateway string) (*Alloc, error) {
-	pool, err := parseRange(cidrs)
-	if err != nil {
-		return nil, err
-	}
-	_, gw, err := net.ParseCIDR(gateway)
-	if err != nil {
-		return nil, err
-	}
-	return &Alloc{db: db, pool: pool, gateway: gw}, nil
-}
-
-func (a *Alloc) UpdateDB(db *db.DB) {
-	a.Lock()
-	a.db = db
-	a.Unlock()
-}
-
-func (a *Alloc) cidr(ip net.IP) string {
-	gw := new(net.IPNet)
-	*gw = *a.gateway
-	gw.IP = ip
-	return gw.String()
-}
-
-func (a *Alloc) AllocIP(ctx context.Context, name string) (addr string, err error) {
-	a.Lock()
-	defer a.Unlock()
-	for _, p := range a.pool {
-		c := ipaddr.NewCursor([]ipaddr.Prefix{*ipaddr.NewPrefix(p)})
-		for pos := c.First(); pos != nil; pos = c.Next() {
-			cidr := a.cidr(pos.IP)
-			if !a.db.IPExists(cidr) {
-				err = a.db.SetIPName(cidr, name)
-				if err != nil {
-					return
-				}
-				addr = pos.IP.String()
-				return
-			}
-		}
-	}
-	err = fmt.Errorf("no more IPs available in pool")
-	return
-}
-
-func (a *Alloc) FreeIP(ctx context.Context, name string) (err error) {
-	a.Lock()
-	defer a.Unlock()
-	if name == "" {
-		return
-	}
-	ip, err := a.db.GetIP(name)
-	if err != nil {
-		return
-	}
-	return a.db.DeleteIPName(ip, name)
-}
-
-func parseRange(cidrs []string) (nets []*net.IPNet, err error) {
-	for _, cidr := range cidrs {
-		if !strings.Contains(cidr, "-") {
-			_, n, err := net.ParseCIDR(cidr)
-			if err != nil {
-				return nil, err
-			}
-			nets = append(nets, n)
-			continue
-		}
-
-		fs := strings.SplitN(cidr, "-", 2)
-		if len(fs) != 2 {
-			return nil, fmt.Errorf("invalid IP range %q", cidr)
-		}
-		start := net.ParseIP(strings.TrimSpace(fs[0]))
-		if start == nil {
-			return nil, fmt.Errorf("invalid IP range %q: invalid start IP %q", cidr, fs[0])
-		}
-		end := net.ParseIP(strings.TrimSpace(fs[1]))
-		if end == nil {
-			return nil, fmt.Errorf("invalid IP range %q: invalid end IP %q", cidr, fs[1])
-		}
-
-		for _, pfx := range ipaddr.Summarize(start, end) {
-			n := &net.IPNet{
-				IP:   pfx.IP,
-				Mask: pfx.Mask,
-			}
-			nets = append(nets, n)
-		}
-	}
-	return
-}
--- a/pkg/api/server.go
+++ b/pkg/api/server.go
@ -7,12 +7,13 @@ import (
 	"net/http"
 	"time"

-	"git.giftfish.de/ston1th/haproxy-lb/pkg/alloc"
 	"git.giftfish.de/ston1th/haproxy-lb/pkg/api/types"
 	serverv1 "git.giftfish.de/ston1th/haproxy-lb/pkg/api/v1/server"
 	"git.giftfish.de/ston1th/haproxy-lb/pkg/config"
 	"git.giftfish.de/ston1th/haproxy-lb/pkg/db"

+	"git.giftfish.de/ston1th/netalloc"
+
 	"github.com/go-logr/logr"
 	"github.com/gorilla/mux"
 )
@ -23,9 +24,8 @@ type Server struct {
 	mux *mux.Router
 	log logr.Logger

-	Data  *types.ContextData
-	cidrs []string
-	gw    string
+	Data *types.ContextData
+	cidr string

 	init         chan struct{}
 	stop         chan struct{}
@ -46,11 +46,10 @@ func (nf *notFoundHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 // NewHTTPServer returns a new HTTPServer
 func NewServer(c *config.Config, log logr.Logger) (*Server, error) {
 	s := &Server{
-		mux:   mux.NewRouter(),
-		log:   log,
-		cidrs: c.VIP.VirtualIPs,
-		gw:    c.VIP.Gateway,
-		Data:  &types.ContextData{},
+		mux:  mux.NewRouter(),
+		log:  log,
+		cidr: c.VIP.Prefix,
+		Data: &types.ContextData{},

 		init:         make(chan struct{}),
 		stop:         make(chan struct{}),
@ -107,15 +106,15 @@ func NewServer(c *config.Config, log logr.Logger) (*Server, error) {

 func (s *Server) UpdateDB(db *db.DB) error {
 	s.Data.DB = db
-	if s.Data.Alloc == nil {
-		alloc, err := alloc.NewAlloc(db, s.cidrs, s.gw)
+	if s.Data.Net == nil {
+		na, err := netalloc.NewGenericAlloc(db, s.cidr)
 		if err != nil {
 			return err
 		}
-		s.Data.Alloc = alloc
+		s.Data.Net = na
 		close(s.init)
 	} else {
-		s.Data.Alloc.UpdateDB(db)
+		s.Data.Net.SetStore(db)
 	}
 	return nil
 }
--- a/pkg/api/types/context.go
+++ b/pkg/api/types/context.go
@ -8,14 +8,15 @@ import (
 	"github.com/go-logr/logr"
 	"github.com/gorilla/mux"

-	"git.giftfish.de/ston1th/haproxy-lb/pkg/alloc"
+	"git.giftfish.de/ston1th/netalloc"
+
 	"git.giftfish.de/ston1th/haproxy-lb/pkg/db"
 )

 type ContextData struct {
-	Alloc *alloc.Alloc
-	DB    *db.DB
-	Auth  *Auth
+	Net  netalloc.Allocator
+	DB   *db.DB
+	Auth *Auth
 }

 func NewContext(w http.ResponseWriter, r *http.Request, data *ContextData, log logr.Logger) *Context {
--- a/pkg/api/v1/client/client.go
+++ b/pkg/api/v1/client/client.go
@ -83,3 +83,16 @@ func (c *Client) DeleteLoadBalancer(ctx context.Context, cluster, name string) (
 	_, err = c.c.Do(req, nil)
 	return
 }
+
+func (c *Client) DeleteLoadBalancersWithCluster(ctx context.Context, cluster string) (err error) {
+	if cluster == "" {
+		return errors.New("cluster value can not be empty")
+	}
+	path := base + "/lb/" + cluster
+	req, err := c.c.NewRequest(ctx, "DELETE", path, nil)
+	if err != nil {
+		return
+	}
+	_, err = c.c.Do(req, nil)
+	return
+}
--- a/pkg/api/v1/schema/schema.go
+++ b/pkg/api/v1/schema/schema.go
@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"sort"
 )

 /*
@ -16,8 +17,15 @@ const Version = "v1"
 type LoadBalancer struct {
 	Name    string  `json:"name,omitempty"`
 	IP      string  `json:"ip,omitempty"`
+	CIDR    string  `json:"cidr,omitempty"`
 	Options Options `json:"options,omitempty"`
-	Ports   []Port  `json:"ports,omitempty"`
+	Ports   Ports   `json:"ports,omitempty"`
+}
+
+func NewLoadBalancerFromBytes(b []byte) (lb *LoadBalancer, err error) {
+	lb = new(LoadBalancer)
+	err = json.Unmarshal(b, lb)
+	return
 }

 type Options struct {
@ -29,16 +37,83 @@ type Options struct {
 }

 type Port struct {
-	Port    int      `json:"port,omitempty"`
-	Servers []Server `json:"servers,omitempty"`
+	Port    int     `json:"port,omitempty"`
+	Servers Servers `json:"servers,omitempty"`
 }

+type Ports []Port
+
+func (p Ports) Len() int           { return len(p) }
+func (p Ports) Less(i, j int) bool { return p[i].Port < p[j].Port }
+func (p Ports) Swap(i, j int)      { p[i], p[j] = p[j], p[i] }
+
 type Server struct {
 	Name string `json:"name,omitempty"`
 	IP   string `json:"ip,omitempty"`
 	Port int    `json:"port,omitempty"`
 }

+type Servers []Server
+
+func (s Servers) Len() int           { return len(s) }
+func (s Servers) Less(i, j int) bool { return s[i].Name < s[j].Name }
+func (s Servers) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
+
+func (o Servers) Equal(n Servers) bool {
+	if len(o) != len(n) {
+		return false
+	}
+	for i, v := range o {
+		if v.Name != n[i].Name ||
+			v.IP != n[i].IP ||
+			v.Port != n[i].Port {
+			return false
+		}
+	}
+	return true
+}
+
+func (o Servers) ContainsIP(ip string) bool {
+	return o.IndexOfIP(ip) != -1
+}
+
+func (o Servers) IndexOfIP(ip string) int {
+	for i, v := range o {
+		if v.IP == ip {
+			return i
+		}
+	}
+	return -1
+}
+
+func (o Servers) RemoveByIP(ip string) Servers {
+	index := o.IndexOfIP(ip)
+	if index == -1 {
+		return o
+	}
+	return append(o[:index], o[index+1:]...)
+}
+
+func (o Servers) ContainsName(name string) bool {
+	return o.IndexOfName(name) != -1
+}
+
+func (o Servers) IndexOfName(name string) int {
+	for i, v := range o {
+		if v.Name == name {
+			return i
+		}
+	}
+	return -1
+}
+func (o Servers) RemoveByName(name string) Servers {
+	index := o.IndexOfName(name)
+	if index == -1 {
+		return o
+	}
+	return append(o[:index], o[index+1:]...)
+}
+
 func (lb LoadBalancer) ValidateClient() error {
 	for i, p := range lb.Ports {
 		if p.Port < 0 || p.Port > 65535 {
@ -66,7 +141,18 @@ func (lb LoadBalancer) ValidateServer() error {
 	if lb.IP == "" {
 		return errors.New("LoadBalancer.IP can not be empty")
 	}
-	return lb.ValidateClient()
+	if lb.CIDR == "" {
+		return errors.New("LoadBalancer.CIDR can not be empty")
+	}
+	err := lb.ValidateClient()
+	if err != nil {
+		return err
+	}
+	sort.Sort(lb.Ports)
+	for _, p := range lb.Ports {
+		sort.Sort(p.Servers)
+	}
+	return nil
 }

 func (lb LoadBalancer) JSON() ([]byte, error) {
--- a/pkg/api/v1/server/handler.go
+++ b/pkg/api/v1/server/handler.go
@ -3,7 +3,6 @@ package server
 import (
 	//"golang.org/x/crypto/bcrypt"
 	//"net/http"
-	"context"
 	"encoding/json"
 	"net"

@ -80,13 +79,14 @@ func lbHandler(ctx *types.Context) {
 			return
 		}
 		lb.Name = lbname(cl, n)
-		cidr, err := ctx.Data.DB.GetIP(name)
+		cidr, err := ctx.Data.DB.GetCIDR(name)
 		if err != nil && err != cluster.ErrKeyNotFound {
 			ctx.Log.Error(err, "error getting existing loadbalancer ip", "cluster", cl, "name", n)
 			ctx.Err(types.ErrISE)
 			return
 		}
 		if cidr != "" {
+			lb.CIDR = cidr
 			lb.IP, err = getIP(cidr)
 			if err != nil {
 				ctx.Log.Error(err, "error parsing existing ip", "cluster", cl, "name", n, "cidr", cidr)
@ -94,12 +94,14 @@ func lbHandler(ctx *types.Context) {
 				return
 			}
 		} else {
-			lb.IP, err = ctx.Data.Alloc.AllocIP(context.Background(), name)
+			ip, err := ctx.Data.Net.Alloc()
 			if err != nil {
 				ctx.Log.Error(err, "error allocating ip for loadbalancer", "cluster", cl, "name", n)
 				ctx.Err(types.ErrISE)
 				return
 			}
+			lb.IP = ip.IP.String()
+			lb.CIDR = ctx.Data.Net.CIDR(ip)
 		}
 		err = lb.ValidateServer()
 		if err != nil {
@ -125,7 +127,13 @@ func lbHandler(ctx *types.Context) {
 			ctx.Err(types.ErrNotFound)
 			return
 		}
-		err := ctx.Data.Alloc.FreeIP(context.Background(), name)
+		cidr, err := ctx.Data.DB.GetCIDR(name)
+		if err != nil && err != cluster.ErrKeyNotFound {
+			ctx.Log.Error(err, "error reading IP of loadbalancer", "cluster", cl, "name", n)
+			ctx.Err(types.ErrISE)
+			return
+		}
+		err = ctx.Data.Net.FreeCIDR(cidr)
 		if err != nil && err != cluster.ErrKeyNotFound {
 			ctx.Log.Error(err, "error freeing IP of loadbalancer", "cluster", cl, "name", n)
 			ctx.Err(types.ErrISE)
@ -149,20 +157,45 @@ func lbList(lbs map[string][]byte) (m map[string]json.RawMessage) {
 	return
 }

-func lbClusterListHandler(ctx *types.Context) {
+func lbClusterHandler(ctx *types.Context) {
 	cl := ctx.Var("cluster")
 	m, err := ctx.Data.DB.GetLBs(cl)
 	if err != nil {
-		ctx.Log.Error(err, "error reading loadbalancers")
+		ctx.Log.Error(err, "error reading loadbalancers", "cluster", cl)
 		ctx.Err(types.ErrISE)
 		return
 	}
-	ctx.JSON(lbList(m))
+	switch ctx.Method() {
+	case "GET":
+		ctx.JSON(lbList(m))
+	case "DELETE":
+		for name, _ := range m {
+			cidr, err := ctx.Data.DB.GetCIDR(name)
+			if err != nil && err != cluster.ErrKeyNotFound {
+				ctx.Log.Error(err, "error reading IP of loadbalancer", "cluster", cl, "name", name)
+				ctx.Err(types.ErrISE)
+				return
+			}
+			err = ctx.Data.Net.FreeCIDR(cidr)
+			if err != nil && err != cluster.ErrKeyNotFound {
+				ctx.Log.Error(err, "error freeing IP of loadbalancer", "cluster", cl, "name", name)
+				ctx.Err(types.ErrISE)
+				return
+			}
+			err = ctx.Data.DB.DeleteLB(name)
+			if err != nil {
+				ctx.Log.Error(err, "error deleting loadbalancer", "cluster", cl, "name", name)
+				ctx.Err(types.ErrISE)
+				return
+			}
+		}
+		ctx.OK()
+	}
 }
 func lbListHandler(ctx *types.Context) {
 	m, err := ctx.Data.DB.GetLBs("")
 	if err != nil {
-		ctx.Log.Error(err, "error reading loadbalancers")
+		ctx.Log.Error(err, "error reading loadbalancer clusters")
 		ctx.Err(types.ErrISE)
 		return
 	}
--- a/pkg/api/v1/server/routes.go
+++ b/pkg/api/v1/server/routes.go
@ -20,8 +20,8 @@ var Routes = []types.Route{
 	},
 	{
 		v1 + "/lb/{cluster:[a-zA-Z0-9-]+$}",
-		authHandler(lbClusterListHandler),
-		[]string{"GET"},
+		authHandler(lbClusterHandler),
+		[]string{"GET", "DELETE"},
 	},
 	{
 		v1 + "/lb/{cluster:[a-zA-Z0-9-]+}/{name:[a-zA-Z0-9-_]+$}",
--- a/pkg/config/config.go
+++ b/pkg/config/config.go
@ -48,11 +48,8 @@ func Validate(c *Config) error {
 	if c.HAProxyService == "" {
 		c.HAProxyService = HAProxyService
 	}
-	if len(c.VIP.VirtualIPs) == 0 {
-		return errors.New("missing server.virtualIPs config")
-	}
-	if c.VIP.Gateway == "" {
-		return errors.New("missing server.gateway config")
+	if c.VIP.Prefix == "" {
+		return errors.New("missing server.prefix config")
 	}
 	if c.LeaderHook != "" {
 		if !filepath.IsAbs(c.LeaderHook) {
@ -154,10 +151,9 @@ type Server struct {
 }

 type VIP struct {
-	VirtualIPs []string `yaml:"virtualIPs"`
-	Gateway    string   `yaml:"gateway"`
-	Interface  string   `yaml:"interface,omitempty"`
-	Label      string   `yaml:"label,omitempty"`
+	Prefix    string `yaml:"prefix"`
+	Interface string `yaml:"interface,omitempty"`
+	Label     string `yaml:"label,omitempty"`
 }

 type BasicAuth struct {
--- a/pkg/db/db.go
+++ b/pkg/db/db.go
@ -1,15 +1,19 @@
 package db

 import (
+	"sync"
+
+	schemav1 "git.giftfish.de/ston1th/haproxy-lb/pkg/api/v1/schema"
 	"git.giftfish.de/ston1th/haproxy-lb/pkg/cluster"
 )

 type DB struct {
+	sync.Mutex
 	kv cluster.KV
 }

 func New(kv cluster.KV) *DB {
-	return &DB{kv}
+	return &DB{kv: kv}
 }

 const (
@ -20,12 +24,12 @@ const (
 )

 func (db *DB) GetIPs() (ips []string, err error) {
-	m, err := db.kv.GetPrefix(namePrefix)
+	m, err := db.kv.GetPrefix(ipPrefix)
 	if err != nil {
 		return
 	}
-	for _, v := range m {
-		ips = append(ips, string(v))
+	for k := range m {
+		ips = append(ips, k)
 	}
 	return
 }
@ -40,36 +44,18 @@ func (db *DB) GetDeletedIPs() (ips []string, err error) {
 	}
 	return
 }
-func (db *DB) GetName(ip string) (string, error) {
-	v, err := db.kv.Get(ipPrefix + ip)
-	return string(v), err
-}
-func (db *DB) IPExists(ip string) bool {
-	_, err := db.GetName(ip)
-	return err == nil
-}
-func (db *DB) SetIPName(ip, name string) error {
-	err := db.kv.Set(ipPrefix+ip, []byte(name))
-	if err != nil {
-		return err
-	}
-	return db.kv.Set(namePrefix+name, []byte(ip))
-}
-func (db *DB) DeleteIPName(ip, name string) error {
-	err := db.kv.Delete(ipPrefix + ip)
-	if err != nil {
-		return err
-	}
-	err = db.kv.Delete(namePrefix + name)
-	if err != nil {
-		return err
-	}
-	return db.kv.Set(delPrefix+ip, nil)
-}

-func (db *DB) GetIP(name string) (string, error) {
-	v, err := db.kv.Get(namePrefix + name)
-	return string(v), err
+func (db *DB) GetCIDR(name string) (cidr string, err error) {
+	b, err := db.GetLB(name)
+	if err != nil {
+		return
+	}
+	lb, err := schemav1.NewLoadBalancerFromBytes(b)
+	if err != nil {
+		return
+	}
+	cidr = lb.CIDR
+	return
 }

 func (db *DB) GetLBs(cl string) (lbs map[string][]byte, err error) {
@ -103,3 +89,21 @@ func (db *DB) SetLB(name string, lb []byte) error {
 func (db *DB) DeleteLB(name string) error {
 	return db.kv.Delete(lbPrefix + name)
 }
+
+func (db *DB) Exists(key string) (bool, error) {
+	_, err := db.kv.Get(ipPrefix + key)
+	if err == cluster.ErrKeyNotFound {
+		return false, nil
+	}
+	return err == nil, err
+}
+func (db *DB) Add(key string) error {
+	return db.kv.Set(ipPrefix+key, nil)
+}
+func (db *DB) Delete(key string) error {
+	err := db.kv.Delete(ipPrefix + key)
+	if err != nil {
+		return err
+	}
+	return db.kv.Set(delPrefix+key, nil)
+}
--- a/pkg/haproxy/config.go
+++ b/pkg/haproxy/config.go
@ -29,6 +29,7 @@ func NewConfig(m map[string][]byte) (c Config, err error) {
 type LoadBalancer struct {
 	Name    string  `json:"name"`
 	IP      string  `json:"ip"`
+	CIDR    string  `json:"cidr"`
 	Options Options `json:"options"`
 	Ports   []Port  `json:"ports"`
 }
--- a/pkg/haproxy/haproxy.go
+++ b/pkg/haproxy/haproxy.go
@ -10,9 +10,12 @@ import (
 	"os"
 	"os/exec"
 	"sync"
+	"syscall"
 	"text/template"
 )

+const Nobody = 65534
+
 type ServiceManager interface {
 	Reload(context.Context) error
 	Status(context.Context) error
@ -21,6 +24,7 @@ type ServiceManager interface {
 }

 type HAProxyManager struct {
+	// protects config update
 	sync.Mutex

 	configFile string
@ -57,7 +61,24 @@ func (ha *HAProxyManager) checkConfig(ctx context.Context, lbs Config) (hash []b
 		return
 	}
 	hash = h.Sum(nil)
-	out, err := exec.CommandContext(ctx, "haproxy", "-c", "-f", tmp.Name()).CombinedOutput()
+	err = os.Chmod(tmp.Name(), 0640)
+	if err != nil {
+		return
+	}
+	err = os.Chown(tmp.Name(), -1, Nobody)
+	if err != nil {
+		return
+	}
+	cmd := exec.CommandContext(ctx, "haproxy", "-c", "-f", tmp.Name())
+	cmd.Dir = os.TempDir()
+	cmd.SysProcAttr = &syscall.SysProcAttr{
+		Credential: &syscall.Credential{
+			Uid: Nobody,
+			Gid: Nobody,
+		},
+		Setsid: true,
+	}
+	out, err := cmd.CombinedOutput()
 	if err != nil {
 		err = fmt.Errorf("%s:%w", string(out), err)
 	}
--- a/pkg/vip/arp.go
+++ b/pkg/vip/arp.go
@ -1,3 +1,4 @@
+//go:build !linux
 // +build !linux

 package vip