mirror of https://github.com/status-im/consul.git
Bump raft-autopilot to the latest version (#10310)
This commit is contained in:
Matt Keeler
GitHub
parent
5beeb44eee
commit
ada4d21285
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@ -0,0 +1,3 @@
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```release-note:bug
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autopilot: **(Enterprise only)** Fixed an issue where autopilot could cause a new leader to demote the wrong voter when redundancy zones are in use and the previous leader failed.
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```
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2
go.mod
2
go.mod
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@ -53,7 +53,7 @@ require (
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github.com/hashicorp/memberlist v0.2.2
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github.com/hashicorp/net-rpc-msgpackrpc v0.0.0-20151116020338-a14192a58a69
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github.com/hashicorp/raft v1.2.0
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github.com/hashicorp/raft-autopilot v0.1.2
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github.com/hashicorp/raft-autopilot v0.1.5
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github.com/hashicorp/raft-boltdb v0.0.0-20171010151810-6e5ba93211ea
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github.com/hashicorp/serf v0.9.5
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github.com/hashicorp/vault/api v1.0.5-0.20200717191844-f687267c8086
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13
go.sum
13
go.sum
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@ -32,7 +32,6 @@ github.com/Azure/go-autorest/logger v0.1.0 h1:ruG4BSDXONFRrZZJ2GUXDiUyVpayPmb1Gn
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github.com/Azure/go-autorest/logger v0.1.0/go.mod h1:oExouG+K6PryycPJfVSxi/koC6LSNgds39diKLz7Vrc=
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github.com/Azure/go-autorest/tracing v0.5.0 h1:TRn4WjSnkcSy5AEG3pnbtFSwNtwzjr4VYyQflFE619k=
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github.com/Azure/go-autorest/tracing v0.5.0/go.mod h1:r/s2XiOKccPW3HrqB+W0TQzfbtp2fGCgRFtBroKn4Dk=
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github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
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github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
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github.com/DataDog/datadog-go v2.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
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github.com/DataDog/datadog-go v3.2.0+incompatible h1:qSG2N4FghB1He/r2mFrWKCaL7dXCilEuNEeAn20fdD4=
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@ -68,7 +67,6 @@ github.com/aws/aws-sdk-go v1.25.37/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpi
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github.com/aws/aws-sdk-go v1.25.41 h1:/hj7nZ0586wFqpwjNpzWiUTwtaMgxAZNZKHay80MdXw=
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github.com/aws/aws-sdk-go v1.25.41/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
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github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
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github.com/beorn7/perks v1.0.0 h1:HWo1m869IqiPhD389kmkxeTalrjNbbJTC8LXupb+sl0=
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github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
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github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
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github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
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@ -139,7 +137,6 @@ github.com/frankban/quicktest v1.11.0 h1:Yyrghcw93e1jKo4DTZkRFTTFvBsVhzbblBUPNU1
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github.com/frankban/quicktest v1.11.0/go.mod h1:K+q6oSqb0W0Ininfk863uOk1lMy69l/P6txr3mVT54s=
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github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
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github.com/ghodss/yaml v0.0.0-20150909031657-73d445a93680/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
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github.com/ghodss/yaml v1.0.0 h1:wQHKEahhL6wmXdzwWG11gIVCkOv05bNOh+Rxn0yngAk=
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github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
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github.com/go-asn1-ber/asn1-ber v1.3.1/go.mod h1:hEBeB/ic+5LoWskz+yKT7vGhhPYkProFKoKdwZRWMe0=
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github.com/go-check/check v0.0.0-20140225173054-eb6ee6f84d0a/go.mod h1:9ES+weclKsC9YodN5RgxqK/VD9HM9JsCSh7rNhMZE98=
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@ -171,7 +168,6 @@ github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfb
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github.com/golang/mock v1.2.0/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
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github.com/golang/protobuf v0.0.0-20161109072736-4bd1920723d7/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
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github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
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github.com/golang/protobuf v1.3.1 h1:YF8+flBXS5eO826T4nzqPrxfhQThhXl0YzfuUPu4SBg=
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github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
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github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
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github.com/golang/protobuf v1.3.5 h1:F768QJ1E9tib+q5Sc8MkdJi1RxLTbRcTf8LJV56aRls=
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@ -182,10 +178,8 @@ github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Z
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github.com/google/btree v1.0.0 h1:0udJVsspx3VBr5FwtLhQQtuAsVc79tTq0ocGIPAU6qo=
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github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
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github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
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github.com/google/go-cmp v0.3.0 h1:crn/baboCvb5fXaQ0IJ1SGTsTVrWpDsCWC8EGETZijY=
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github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
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github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
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github.com/google/go-cmp v0.4.0 h1:xsAVV57WRhGj6kEIi8ReJzQlHHqcBYCElAvkovg3B/4=
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github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
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github.com/google/go-cmp v0.5.2 h1:X2ev0eStA3AbceY54o37/0PQ/UWqKEiiO2dKL5OPaFM=
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github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
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@ -193,7 +187,6 @@ github.com/google/go-querystring v0.0.0-20170111101155-53e6ce116135/go.mod h1:od
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github.com/google/go-querystring v1.0.0 h1:Xkwi/a1rcvNg1PPYe5vI8GbeBY/jrVuDX5ASuANWTrk=
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github.com/google/go-querystring v1.0.0/go.mod h1:odCYkC5MyYFN7vkCjXpyrEuKhc/BUO6wN/zVPAxq5ck=
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github.com/google/gofuzz v0.0.0-20161122191042-44d81051d367/go.mod h1:HP5RmnzzSNb993RKQDq4+1A4ia9nllfqcQFTQJedwGI=
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github.com/google/gofuzz v1.0.0 h1:A8PeW59pxE9IoFRqBp37U+mSNaQoZ46F1f0f863XSXw=
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github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
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github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
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github.com/google/gofuzz v1.2.0 h1:xRy4A+RhZaiKjJ1bPfwQ8sedCA+YS2YcCHW6ec7JMi0=
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@ -232,7 +225,6 @@ github.com/hashicorp/go-discover v0.0.0-20200501174627-ad1e96bde088/go.mod h1:vZ
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github.com/hashicorp/go-hclog v0.0.0-20180709165350-ff2cf002a8dd/go.mod h1:9bjs9uLqI8l75knNv3lV1kA55veR+WUPSiKIWcQHudI=
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github.com/hashicorp/go-hclog v0.9.1/go.mod h1:5CU+agLiy3J7N7QjHK5d05KxGsuXiQLrjA0H7acj2lQ=
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github.com/hashicorp/go-hclog v0.9.2/go.mod h1:5CU+agLiy3J7N7QjHK5d05KxGsuXiQLrjA0H7acj2lQ=
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github.com/hashicorp/go-hclog v0.12.0 h1:d4QkX8FRTYaKaCZBoXYY8zJX2BXjWxurN/GA2tkrmZM=
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github.com/hashicorp/go-hclog v0.12.0/go.mod h1:whpDNt7SSdeAju8AWKIWsul05p54N/39EeqMAyrmvFQ=
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github.com/hashicorp/go-hclog v0.14.1 h1:nQcJDQwIAGnmoUWp8ubocEX40cCml/17YkF6csQLReU=
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github.com/hashicorp/go-hclog v0.14.1/go.mod h1:whpDNt7SSdeAju8AWKIWsul05p54N/39EeqMAyrmvFQ=
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@ -278,7 +270,6 @@ github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T
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github.com/hashicorp/hil v0.0.0-20200423225030-a18a1cd20038 h1:n9J0rwVWXDpNd5iZnwY7w4WZyq53/rROeI7OVvLW8Ok=
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github.com/hashicorp/hil v0.0.0-20200423225030-a18a1cd20038/go.mod h1:n2TSygSNwsLJ76m8qFXTSc7beTb+auJxYdqrnoqwZWE=
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github.com/hashicorp/logutils v1.0.0/go.mod h1:QIAnNjmIWmVIIkWDTG1z5v++HQmx9WQRO+LraFDTW64=
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github.com/hashicorp/mdns v1.0.1 h1:XFSOubp8KWB+Jd2PDyaX5xUd5bhSP/+pTDZVDMzZJM8=
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github.com/hashicorp/mdns v1.0.1/go.mod h1:4gW7WsVCke5TE7EPeYliwHlRUyBtfCwuFwuMg2DmyNY=
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github.com/hashicorp/mdns v1.0.4 h1:sY0CMhFmjIPDMlTB+HfymFHCaYLhgifZ0QhjaYKD/UQ=
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github.com/hashicorp/mdns v1.0.4/go.mod h1:mtBihi+LeNXGtG8L9dX59gAEa12BDtBQSp4v/YAJqrc=
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@ -289,8 +280,8 @@ github.com/hashicorp/net-rpc-msgpackrpc v0.0.0-20151116020338-a14192a58a69/go.mo
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github.com/hashicorp/raft v1.1.1/go.mod h1:vPAJM8Asw6u8LxC3eJCUZmRP/E4QmUGE1R7g7k8sG/8=
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github.com/hashicorp/raft v1.2.0 h1:mHzHIrF0S91d3A7RPBvuqkgB4d/7oFJZyvf1Q4m7GA0=
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github.com/hashicorp/raft v1.2.0/go.mod h1:vPAJM8Asw6u8LxC3eJCUZmRP/E4QmUGE1R7g7k8sG/8=
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github.com/hashicorp/raft-autopilot v0.1.2 h1:yeqdUjWLjVJkBM+mcVxqwxi+w+aHsb9cEON2dz69OCs=
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github.com/hashicorp/raft-autopilot v0.1.2/go.mod h1:Af4jZBwaNOI+tXfIqIdbcAnh/UyyqIMj/pOISIfhArw=
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github.com/hashicorp/raft-autopilot v0.1.5 h1:onEfMH5uHVdXQqtas36zXUHEZxLdsJVu/nXHLcLdL1I=
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github.com/hashicorp/raft-autopilot v0.1.5/go.mod h1:Af4jZBwaNOI+tXfIqIdbcAnh/UyyqIMj/pOISIfhArw=
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github.com/hashicorp/raft-boltdb v0.0.0-20171010151810-6e5ba93211ea h1:xykPFhrBAS2J0VBzVa5e80b5ZtYuNQtgXjN40qBZlD4=
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github.com/hashicorp/raft-boltdb v0.0.0-20171010151810-6e5ba93211ea/go.mod h1:pNv7Wc3ycL6F5oOWn+tPGo2gWD4a5X+yp/ntwdKLjRk=
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github.com/hashicorp/serf v0.9.5 h1:EBWvyu9tcRszt3Bxp3KNssBMP1KuHWyO51lz9+786iM=
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|
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@ -147,16 +147,6 @@ type Autopilot struct {
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// racing.
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stateLock sync.RWMutex
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// startTime is recorded so that we can make better determinations about server
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// stability during the initial period of time after autopilot first starts.
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// If autopilot has just started the default behavior to check if a server is
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// stable will not work as it will ensure the server has been healthy for
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// the configured server stabilization time. If that configure time is longer
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// than the amount of time autopilot has been running you can run into issues
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// with leadership flapping during some scenarios where a cluster is being
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// brought up.
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startTime time.Time
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// removeDeadCh is used to trigger the running autopilot go routines to
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// find and remove any dead/failed servers
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removeDeadCh chan struct{}
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@ -18,7 +18,6 @@ func (a *Autopilot) Start(ctx context.Context) {
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}
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ctx, shutdown := context.WithCancel(ctx)
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a.startTime = a.time.Now()
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exec := &execInfo{
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status: Running,
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@ -128,6 +127,21 @@ func (a *Autopilot) beginExecution(ctx context.Context, exec *execInfo) {
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a.logger.Debug("autopilot is now stopped")
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// We need to gain this lock so that we can zero out the previous state.
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// This prevents us from accidentally tracking stale state in the event
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// that we used to be the leader at some point in time, then weren't
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// and now are again. In particular this will ensure that that we forget
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// about our tracking of the firstStateTime so that once restarted, we
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// will ignore server stabilization time just like we do the very
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// first time this process ever was the leader.
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//
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// This isn't included in finishExecution so that we don't perform it
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// if we fail to gain the leaderLock before the context gets cancelled
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// back at the beginning of this function.
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a.stateLock.Lock()
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defer a.stateLock.Unlock()
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a.state = &State{}
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a.finishExecution(exec)
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a.leaderLock.Unlock()
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}()
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@ -27,15 +27,15 @@ func aliveServers(servers map[raft.ServerID]*Server) map[raft.ServerID]*Server {
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// nextStateInputs is the collection of values that can influence
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// creation of the next State.
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type nextStateInputs struct {
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Now time.Time
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StartTime time.Time
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Config *Config
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RaftConfig *raft.Configuration
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KnownServers map[raft.ServerID]*Server
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LatestIndex uint64
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LastTerm uint64
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FetchedStats map[raft.ServerID]*ServerStats
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LeaderID raft.ServerID
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Now time.Time
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FirstStateTime time.Time
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Config *Config
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RaftConfig *raft.Configuration
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KnownServers map[raft.ServerID]*Server
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LatestIndex uint64
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LastTerm uint64
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FetchedStats map[raft.ServerID]*ServerStats
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LeaderID raft.ServerID
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}
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// gatherNextStateInputs gathers all the information that would be used to
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@ -52,9 +52,34 @@ type nextStateInputs struct {
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func (a *Autopilot) gatherNextStateInputs(ctx context.Context) (*nextStateInputs, error) {
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// there are a lot of inputs to computing the next state so they get put into a
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// struct so that we don't have to return 8 values.
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now := a.time.Now()
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// We need to pull the previous states knowledge of the first time a state was generated.
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// This is really only important for when autopilot is first started. We will use the
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// first state's time when determining if a server is stable. Under normal circumstances
|
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// we need to just check that the current time - the servers StableSince time is greater
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// than the configured stabilization time. However while autopilot has been running for
|
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// less time than the stabilization time we need to consider all servers as stable
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// to prevent unnecessary leader elections. Therefore its important to track the first
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// time a state was generated so we know if we have a state old enough where there is
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// any chance of seeing servers as stable based off that configured threshold.
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var firstStateTime time.Time
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a.stateLock.Lock()
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if a.state != nil {
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firstStateTime = a.state.firstStateTime
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}
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a.stateLock.Unlock()
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// firstStateTime will be the zero value if we are in the process of generating
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// the first state. In that case we set it to the now time.
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if firstStateTime.IsZero() {
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firstStateTime = now
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}
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inputs := &nextStateInputs{
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Now: a.time.Now(),
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StartTime: a.startTime,
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Now: now,
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FirstStateTime: firstStateTime,
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}
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// grab the latest autopilot configuration
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@ -71,16 +96,30 @@ func (a *Autopilot) gatherNextStateInputs(ctx context.Context) (*nextStateInputs
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}
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inputs.RaftConfig = raftConfig
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leader := a.raft.Leader()
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for _, s := range inputs.RaftConfig.Servers {
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if s.Address == leader {
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inputs.LeaderID = s.ID
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// get the known servers which may include left/failed ones
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inputs.KnownServers = a.delegate.KnownServers()
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|
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// Try to retrieve leader id from the delegate.
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for id, srv := range inputs.KnownServers {
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if srv.IsLeader {
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inputs.LeaderID = id
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break
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}
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}
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|
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// Delegate setting the leader information is optional. If leader detection is
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// not successful, fallback on raft config to do the same.
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if inputs.LeaderID == "" {
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return nil, fmt.Errorf("cannot detect the current leader server id from its address: %s", leader)
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leader := a.raft.Leader()
|
||||
for _, s := range inputs.RaftConfig.Servers {
|
||||
if s.Address == leader {
|
||||
inputs.LeaderID = s.ID
|
||||
break
|
||||
}
|
||||
}
|
||||
if inputs.LeaderID == "" {
|
||||
return nil, fmt.Errorf("cannot detect the current leader server id from its address: %s", leader)
|
||||
}
|
||||
}
|
||||
|
||||
// get the latest Raft index - this should be kept close to the call to
|
||||
|
|
@ -101,9 +140,6 @@ func (a *Autopilot) gatherNextStateInputs(ctx context.Context) (*nextStateInputs
|
|||
return nil, ctx.Err()
|
||||
}
|
||||
|
||||
// get the known servers which may include left/failed ones
|
||||
inputs.KnownServers = a.delegate.KnownServers()
|
||||
|
||||
// in most cases getting the known servers should be quick but as we cannot
|
||||
// account for every potential delegate and prevent them from making
|
||||
// blocking network requests we should probably check the context again.
|
||||
|
|
@ -146,10 +182,13 @@ func (a *Autopilot) nextState(ctx context.Context) (*State, error) {
|
|||
func (a *Autopilot) nextStateWithInputs(inputs *nextStateInputs) *State {
|
||||
nextServers := a.nextServers(inputs)
|
||||
|
||||
// we record the firstStateTime so that we can ignore the server stabilization
|
||||
// time up until the time we generated the first state becomes far enough
|
||||
// in the past. Until that point in time all servers are considered stable.
|
||||
newState := &State{
|
||||
startTime: inputs.StartTime,
|
||||
Healthy: true,
|
||||
Servers: nextServers,
|
||||
firstStateTime: inputs.FirstStateTime,
|
||||
Healthy: true,
|
||||
Servers: nextServers,
|
||||
}
|
||||
|
||||
voterCount := 0
|
||||
|
|
|
|||
|
|
@ -85,6 +85,7 @@ type Server struct {
|
|||
Version string
|
||||
Meta map[string]string
|
||||
RaftVersion int
|
||||
IsLeader bool
|
||||
|
||||
// The remaining fields are those that the promoter
|
||||
// will fill in
|
||||
|
|
@ -166,7 +167,7 @@ type ServerStats struct {
|
|||
}
|
||||
|
||||
type State struct {
|
||||
startTime time.Time
|
||||
firstStateTime time.Time
|
||||
Healthy bool
|
||||
FailureTolerance int
|
||||
Servers map[raft.ServerID]*ServerState
|
||||
|
|
@ -177,14 +178,11 @@ type State struct {
|
|||
|
||||
func (s *State) ServerStabilizationTime(c *Config) time.Duration {
|
||||
// Only use the configured stabilization time when autopilot has
|
||||
// been running for 110% of the configured stabilization time.
|
||||
// Before that time we haven't been running long enough to
|
||||
// be able to take these values into account. 110% is pretty
|
||||
// arbitrary but with the default config would prevent the
|
||||
// stabilization time from mattering for an extra second. This
|
||||
// allows for leeway in how quickly we get the healthy RPC responses
|
||||
// after autopilot is started.
|
||||
if time.Since(s.startTime) > (c.ServerStabilizationTime*110)/100 {
|
||||
// been running for at least as long as when the first state was
|
||||
// generated. If it hasn't been running that long then we would
|
||||
// guarantee that all checks against the stabilization time will
|
||||
// fail which will result in excessive leader elections.
|
||||
if time.Since(s.firstStateTime) > c.ServerStabilizationTime {
|
||||
return c.ServerStabilizationTime
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -280,7 +280,7 @@ github.com/hashicorp/memberlist
|
|||
github.com/hashicorp/net-rpc-msgpackrpc
|
||||
# github.com/hashicorp/raft v1.2.0
|
||||
github.com/hashicorp/raft
|
||||
# github.com/hashicorp/raft-autopilot v0.1.2
|
||||
# github.com/hashicorp/raft-autopilot v0.1.5
|
||||
github.com/hashicorp/raft-autopilot
|
||||
# github.com/hashicorp/raft-boltdb v0.0.0-20171010151810-6e5ba93211ea
|
||||
github.com/hashicorp/raft-boltdb
|
||||
|
|
|
|||
Loading…
Reference in New Issue