feature:add a cli command to ha pattern (HA third part)

cmd/supernode/app/root.go

@@ -102,6 +102,15 @@ func setupFlags(cmd *cobra.Command, opt *Options) {
 
 	flagSet.StringVar(&opt.AdvertiseIP, "advertise-ip", "",
 		"the supernode ip that we advertise to other peer in the p2p-network")
+
+	flagSet.BoolVarP(&opt.UseHA, "use-ha", "H", opt.UseHA,
+		"set whether to use supernode HA")
+
+	flagSet.StringSliceVar(&opt.HAConfig, "etcd-address", opt.HAConfig,
+		"if you use supernode HA,you should set the etcd address to implement ha")
+
+	flagSet.IntVar(&opt.HARpcPort, "rpc-port", opt.HARpcPort,
+		"if you use supernode HA,you should set the rpc port to implement ha")
 }
 
 // runSuperNode prepares configs, setups essential details and runs supernode daemon.

go.mod

@@ -38,6 +38,7 @@ require (
 	github.com/stretchr/testify v1.2.2
 	github.com/valyala/fasthttp v1.3.0
 	github.com/willf/bitset v0.0.0-20190228212526-18bd95f470f9
+	go.etcd.io/etcd v3.3.13+incompatible
 	golang.org/x/net v0.0.0-20190620200207-3b0461eec859 // indirect
 	gopkg.in/gcfg.v1 v1.2.3
 	gopkg.in/mgo.v2 v2.0.0-20160818020120-3f83fa500528 // indirect

go.sum

@@ -16,19 +16,26 @@ github.com/beorn7/perks v1.0.0 h1:HWo1m869IqiPhD389kmkxeTalrjNbbJTC8LXupb+sl0=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
 github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
+github.com/coreos/bbolt v1.3.2 h1:wZwiHHUieZCquLkDL0B8UhzreNWsPHooDAG3q34zk0s=
 github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk=
+github.com/coreos/etcd v3.3.10+incompatible h1:jFneRYjIvLMLhDLCzuTuU4rSJUjRplcJQ7pD7MnhC04=
 github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
+github.com/coreos/go-semver v0.2.0 h1:3Jm3tLmsgAYcjC+4Up7hJrFBPr+n7rAqYeSw/SZazuY=
 github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
+github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e h1:Wf6HqHfScWJN9/ZjdUKyjop4mf3Qdd+1TvvltAvM3m8=
 github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
+github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f h1:lBNOc5arjvs8E5mO2tbpBpLoyyu8B6e44T7hJy6potg=
 github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
 github.com/cpuguy83/go-md2man v1.0.7 h1:DVS0EPFHUiaJSaX2EKlaf65HUmk9PXhOl/Xa3Go242Q=
 github.com/cpuguy83/go-md2man v1.0.7/go.mod h1:N6JayAiVKtlHSnuTCeuLSQVs75hb8q+dYQLjr7cDsKY=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dgrijalva/jwt-go v3.2.0+incompatible h1:7qlOGliEKZXTDg6OTjfoBKDXWrumCAMpl/TFQ4/5kLM=
 github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
 github.com/dgryski/go-sip13 v0.0.0-20181026042036-e10d5fee7954/go.mod h1:vAd38F8PWV+bWy6jNmig1y/TA+kYO4g3RSRF0IAv0no=
 github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
+github.com/ghodss/yaml v1.0.0 h1:wQHKEahhL6wmXdzwWG11gIVCkOv05bNOh+Rxn0yngAk=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/go-check/check v0.0.0-20161208181325-20d25e280405 h1:0kdUKH22y+PT7ZITTEcrrHsQfGmpi4fj0XGyoDe/krQ=
 github.com/go-check/check v0.0.0-20161208181325-20d25e280405/go.mod h1:9ES+weclKsC9YodN5RgxqK/VD9HM9JsCSh7rNhMZE98=
@@ -57,8 +64,11 @@ github.com/go-openapi/validate v0.0.0-20170705144413-8a82927c942c h1:+cB2AzkH5an
 github.com/go-openapi/validate v0.0.0-20170705144413-8a82927c942c/go.mod h1:ve8xoSHgqBUifiKgaVbxLmOE0ckvH0oXfsJcnm6SIz0=
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
+github.com/gogo/protobuf v1.2.1 h1:/s5zKNz0uPFCZ5hddgPdo2TK2TVrUNMn0OOX8/aZMTE=
 github.com/gogo/protobuf v1.2.1/go.mod h1:hp+jE20tsWTFYpLwKvXlhS1hjn+gTNwPg2I6zVXpSg4=
+github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
+github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef h1:veQD95Isof8w9/WXiA+pa3tz3fJXkt5B7QaRBrM62gk=
 github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/mock v1.1.1 h1:G5FRp8JnTd7RQH5kemVNlMeyXQAztQ3mOWV95KxsXH8=
 github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
@@ -67,20 +77,26 @@ github.com/golang/mock v1.3.1/go.mod h1:sBzyDLLjw3U8JLTeZvSv8jJB+tU5PVekmnlKIyFU
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.1 h1:YF8+flBXS5eO826T4nzqPrxfhQThhXl0YzfuUPu4SBg=
 github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/google/btree v1.0.0 h1:0udJVsspx3VBr5FwtLhQQtuAsVc79tTq0ocGIPAU6qo=
 github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
 github.com/gorilla/context v0.0.0-20181012153548-51ce91d2eadd h1:bB2XEQHhNsTTpqNzsq5ObUuqR7RNIdpm5Phb6AjeejE=
 github.com/gorilla/context v0.0.0-20181012153548-51ce91d2eadd/go.mod h1:kBGZzfjB9CEq2AlWe17Uuf7NDRt0dE0s8S51q0aT7Yg=
 github.com/gorilla/mux v1.5.0 h1:mq8bRov+5x+pZNR/uAHyUEgovR9gLgYFwDQIeuYi9TM=
 github.com/gorilla/mux v1.5.0/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
+github.com/gorilla/websocket v1.4.0 h1:WDFjx/TMzVgy9VdMMQi2K2Emtwi2QcUQsztZ/zLaH/Q=
 github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
+github.com/grpc-ecosystem/go-grpc-middleware v1.0.0 h1:Iju5GlWwrvL6UBg4zJJt3btmonfrMlCDdsejg4CZE7c=
 github.com/grpc-ecosystem/go-grpc-middleware v1.0.0/go.mod h1:FiyG127CGDf3tlThmgyCl78X/SZQqEOJBCDaAfeWzPs=
+github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0 h1:Ovs26xHkKqVztRpIrF/92BcuyuQ/YW4NSIpoGtfXNho=
 github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0/go.mod h1:8NvIoxWQoOIhqOTXgfV/d3M/q6VIi02HzZEHgUlZvzk=
+github.com/grpc-ecosystem/grpc-gateway v1.9.0 h1:bM6ZAFZmc/wPFaRDi0d5L7hGEZEx/2u+Tmr2evNHDiI=
 github.com/grpc-ecosystem/grpc-gateway v1.9.0/go.mod h1:vNeuVxBJEsws4ogUvrchl83t/GYV9WGTSLVdBhOQFDY=
 github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=
 github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
 github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
+github.com/jonboulle/clockwork v0.1.0 h1:VKV+ZcuP6l3yW9doeqz6ziZGgcynBVQO+obU0+0hcPo=
 github.com/jonboulle/clockwork v0.1.0/go.mod h1:Ii8DK3G1RaLaWxj9trq07+26W01tbo22gdxWY5EU2bo=
 github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=
 github.com/kisielk/errcheck v1.1.0/go.mod h1:EZBBE59ingxPouuu3KfxchcWSUPOHkagtvWXihfKN4Q=
@@ -136,6 +152,7 @@ github.com/russross/blackfriday v0.0.0-20171011182219-6d1ef893fcb0 h1:hgS5QyP981
 github.com/russross/blackfriday v0.0.0-20171011182219-6d1ef893fcb0/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
 github.com/sirupsen/logrus v1.2.0 h1:juTguoYk5qI21pwyTXY3B3Y5cOTH3ZUyZCg1v/mihuo=
 github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
+github.com/soheilhy/cmux v0.1.4 h1:0HKaf1o97UwFjHH9o5XsHUOF+tqmdA7KEzXLpiyaw0E=
 github.com/soheilhy/cmux v0.1.4/go.mod h1:IM3LyeVVIOuxMH7sFAkER9+bJ4dT7Ms6E4xg4kGIyLM=
 github.com/spaolacci/murmur3 v0.0.0-20180118202830-f09979ecbc72/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
 github.com/spf13/afero v1.1.2/go.mod h1:j4pytiNVoe2o6bmDsKpLACNPDBIoEAkihy7loJ1B0CQ=
@@ -155,7 +172,9 @@ github.com/spf13/viper v1.4.0/go.mod h1:PTJ7Z/lr49W6bUbkmS1V3by4uWynFiR9p7+dSq/y
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5 h1:LnC5Kc/wtumK+WB441p7ynQJzVuNRJiqddSIE3IlSEQ=
 github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5/go.mod h1:ncp9v5uamzpCO7NfCPTXjqaC+bZgJeR0sMTm6dMHP7U=
+github.com/ugorji/go v1.1.4 h1:j4s+tAvLfL3bZyefP2SEWmhBzmuIlH/eqNuPdFPgngw=
 github.com/ugorji/go v1.1.4/go.mod h1:uQMGLiO92mf5W77hV/PUCpI3pbzQx3CRekS0kk+RGrc=
 github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
 github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
@@ -164,11 +183,18 @@ github.com/valyala/fasthttp v1.3.0/go.mod h1:4vX61m6KN+xDduDNwXrhIAVZaZaZiQ1luJk
 github.com/valyala/tcplisten v0.0.0-20161114210144-ceec8f93295a/go.mod h1:v3UYOV9WzVtRmSR+PDvWpU/qWl4Wa5LApYYX4ZtKbio=
 github.com/willf/bitset v0.0.0-20190228212526-18bd95f470f9 h1:WXBMTckrTcndPgRZBAEjqev+eN8MI9wbUQQUHlrUEV4=
 github.com/willf/bitset v0.0.0-20190228212526-18bd95f470f9/go.mod h1:RjeCKbqT1RxIR/KWY6phxZiaY1IyutSBfGjNPySAYV4=
+github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2 h1:eY9dn8+vbi4tKz5Qo6v2eYzo7kUS51QINcR5jNpbZS8=
 github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
 github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
+go.etcd.io/bbolt v1.3.2 h1:Z/90sZLPOeCy2PwprqkFa25PdkusRzaj9P8zm/KNyvk=
 go.etcd.io/bbolt v1.3.2/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
+go.etcd.io/etcd v3.3.13+incompatible h1:jCejD5EMnlGxFvcGRyEV4VGlENZc7oPQX6o0t7n3xbw=
+go.etcd.io/etcd v3.3.13+incompatible/go.mod h1:yaeTdrJi5lOmYerz05bd8+V7KubZs8YSFZfzsF9A6aI=
+go.uber.org/atomic v1.4.0 h1:cxzIVoETapQEqDhQu3QfnvXAV4AlzcvUCxkVUFw3+EU=
 go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
+go.uber.org/multierr v1.1.0 h1:HoEmRHQPVSqub6w2z2d2EOVs2fjyFRGyofhKuyDq0QI=
 go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
+go.uber.org/zap v1.10.0 h1:ORx85nbTijNz8ljznvCMR1ZBIPKFn3jQrag10X2AsuM=
 go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2 h1:VklqNMn3ovrHsnt90PveolxSbWFaJdECFbxSq0Mqo2M=
@@ -197,15 +223,18 @@ golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a h1:1BGLXjeY4akVXGgbC9HugT3Jv
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/time v0.0.0-20190308202827-9d24e82272b4 h1:SvFZT6jyqRaOeXpc5h/JSfZenJ2O330aBsf7JfSUXmQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.0.0-20180221164845-07fd8470d635/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190425150028-36563e24a262 h1:qsl9y/CJx34tuA7QCPNp86JNJe4spst6Ff8MjvPUdPg=
 golang.org/x/tools v0.0.0-20190425150028-36563e24a262/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
+google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8 h1:Nw54tB0rB7hY/N0NQvRW8DG4Yk3Q6T9cu9RcFQDu1tc=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
+google.golang.org/grpc v1.21.0 h1:G+97AoqBnmZIT91cLG/EkCoK9NSelj64P8bOHHNmGn0=
 google.golang.org/grpc v1.21.0/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
 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=

supernode/config/config.go

@@ -18,13 +18,20 @@ package config
 
 import (
 	"fmt"
+	"math/rand"
+	"net/rpc"
 	"path/filepath"
+	"reflect"
 	"strings"
+	"sync"
 	"time"
 
-	"gopkg.in/yaml.v2"
-
+	"github.com/dragonflyoss/Dragonfly/pkg/errortypes"
 	"github.com/dragonflyoss/Dragonfly/pkg/fileutils"
+
+	"github.com/go-openapi/strfmt"
+	"github.com/pkg/errors"
+	"gopkg.in/yaml.v2"
 )
 
 // NewConfig create an instant with default values.
@@ -41,6 +48,17 @@ type Config struct {
 	Storages        map[string]interface{}             `yaml:"storages"`
 }
 
+// SupernodeInfo store the supernode's info get from etcd.
+type SupernodeInfo struct {
+	IP           string
+	ListenPort   int
+	DownloadPort int
+	RPCPort      int
+	HostName     strfmt.Hostname
+	PID          string
+	RPCClient    *rpc.Client
+}
+
 // Load loads config properties from the giving file.
 func (c *Config) Load(path string) error {
 	return fileutils.LoadYaml(path, c)
@@ -84,6 +102,36 @@ func (c *Config) IsSuperPID(peerID string) bool {
 	return peerID == c.superNodePID
 }
 
+// GetOtherSupernodeInfo gets the other supernodes information in supernode ha cluster
+func (c *Config) GetOtherSupernodeInfo() []SupernodeInfo {
+	c.lock.RLock()
+	defer c.lock.RUnlock()
+	s := randSlice(*c.OtherSupernodes)
+	fmt.Println(s)
+	return s
+
+}
+
+// SetOtherSupernodeInfo sets the other supernodes information in supernode ha cluster
+func (c *Config) SetOtherSupernodeInfo(otherSupernodes []SupernodeInfo) {
+	c.lock.Lock()
+	defer c.lock.Unlock()
+	c.OtherSupernodes = &otherSupernodes
+}
+
+// GetOtherSupernodeInfoByPID get other supernode's info by peerID
+func (c *Config) GetOtherSupernodeInfoByPID(peerID string) (*SupernodeInfo, error) {
+	c.lock.RLock()
+	defer c.lock.RUnlock()
+	for _, node := range *c.OtherSupernodes {
+		if node.PID == peerID {
+			return &node, nil
+			break
+		}
+	}
+	return nil, errors.Wrapf(errortypes.ErrDataNotFound, "peerID: %s", peerID)
+}
+
 // NewBaseProperties create an instant with default values.
 func NewBaseProperties() *BaseProperties {
 	home := filepath.Join(string(filepath.Separator), "home", "admin", "supernode")
@@ -107,6 +155,9 @@ func NewBaseProperties() *BaseProperties {
 		GCMetaInterval:          DefaultGCMetaInterval,
 		TaskExpireTime:          DefaultTaskExpireTime,
 		PeerGCDelay:             DefaultPeerGCDelay,
+		UseHA:                   false,
+		HAConfig:                []string{"127.0.0.1:2379"},
+		HARpcPort:               9000,
 	}
 }
 
@@ -212,9 +263,47 @@ type BaseProperties struct {
 
 	// superNodePID is the ID of supernode, which is the same as peer ID of dfget.
 	superNodePID string
+
+	// UseHA is the mark of whether the supernode use the ha model.
+	// ha means if the active supernode is off,the standby supernode can take over active supernode's work.
+	// and the whole system can work as before.
+	// default:false.
+	UseHA bool `yaml:"useHa"`
+
+	// HAConfig is available when UseHa is true.
+	// HAConfig configs the tool's ip and port we use to implement ha.
+	// default:[] string {127.0.0.1:2379}.
+	HAConfig []string `yaml:"haConfig"`
+
+	//HAStandbyPort is available when UseHa is true.
+	//HAStandbyPort configs the port the supernode use when its status is standby
+	//HAStandbyPort is the port to receive the active supernode's request copy to implement state synchronization
+	HARpcPort int `yaml:"haStandbyPort"`
+
+	//OtherSupernodes records other supernode info in the p2p System.
+	OtherSupernodes *[]SupernodeInfo `yaml:"otherSupernode"`
+
+	//lock is thr read-write lock to use change supernodeInfo,
+	//if OtherSupernode changes when use,supernode may panic
+	lock sync.RWMutex `yaml:"lock"`
 }
 
 // TransLimit trans rateLimit from MB/s to B/s.
 func TransLimit(rateLimit int) int {
 	return rateLimit * 1024 * 1024
 }
+
+// randSlice randoms the other supernodes info
+func randSlice(supernodes []SupernodeInfo) []SupernodeInfo {
+	length := len(supernodes)
+	if length < 2 {
+		return supernodes
+	}
+	swap := reflect.Swapper(supernodes)
+	rand.Seed(time.Now().Unix())
+	for i := length - 1; i >= 0; i-- {
+		j := rand.Intn(length)
+		swap(i, j)
+	}
+	return supernodes
+}

supernode/daemon/daemon.go

@@ -22,6 +22,7 @@ import (
 
 	"github.com/dragonflyoss/Dragonfly/apis/types"
 	"github.com/dragonflyoss/Dragonfly/supernode/config"
+	"github.com/dragonflyoss/Dragonfly/supernode/daemon/mgr/ha"
 	"github.com/dragonflyoss/Dragonfly/supernode/plugins"
 	"github.com/dragonflyoss/Dragonfly/supernode/server"
 
@@ -81,6 +82,16 @@ func (d *Daemon) RegisterSuperNode() error {
 
 // Run runs the daemon.
 func (d *Daemon) Run() error {
+	if d.config.UseHA == true {
+		if err := ha.StartRPCServer(d.config, d.server.CdnMgr, d.server.DfgetTaskMgr, d.server.ProgressMgr, d.server.TaskMgr, d.server.PeerMgr); err != nil {
+			logrus.Errorf("failed to open rpc port,err: %v", err)
+			return err
+		}
+		if err := d.server.HaMgr.HADaemon(context.Background()); err != nil {
+			logrus.Errorf("failed to start a HA daemon progress,err: %v", err)
+			return err
+		}
+	}
 	if err := d.server.Start(); err != nil {
 		logrus.Errorf("failed to start HTTP server: %v", err)
 		return err