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Filter out left/leaving serf members when determining if new AC… (#6332)

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Matt Keeler 2019-08-16 10:34:18 -04:00 committed by GitHub
parent 87d6eec378
commit 318b9ebbe3
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2 changed files with 135 additions and 0 deletions
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8
agent/consul/util.go
View File

@ -322,6 +322,14 @@ func ServersGetACLMode(members []serf.Member, leader string, datacenter string)
continue
}
if parts.Status != serf.StatusAlive && parts.Status != serf.StatusFailed {
// ignore any server that isn't alive or failed. We are considering failed
// because in this state there is a reasonable expectation that they could
// become stable again. Also autopilot should remove dead servers if they
// are truly gone.
continue
}
numServers += 1
if memberAddr := (&net.TCPAddr{IP: member.Addr, Port: parts.Port}).String(); memberAddr == leader {

127
agent/consul/util_test.go
View File

@ -7,6 +7,7 @@ import (
"regexp"
"testing"
"github.com/hashicorp/consul/agent/structs"
"github.com/hashicorp/go-version"
"github.com/hashicorp/serf/serf"
"github.com/stretchr/testify/require"
@ -622,3 +623,129 @@ func TestInterpolateHIL(t *testing.T) {
})
}
}
func TestServersGetACLMode(t *testing.T) {
t.Parallel()
makeMember := func(role string, datacenter string, acls structs.ACLMode, status serf.MemberStatus, addr net.IP) serf.Member {
return serf.Member{
Name: "foo",
Addr: addr,
Tags: map[string]string{
"role": role,
"id": "asdf",
"dc": datacenter,
"port": "10000",
"build": "1.6.0",
"wan_join_port": "1234",
"vsn": "1",
"expect": "3",
"raft_vsn": "3",
"acls": string(acls),
},
Status: status,
}
}
type tcase struct {
members []serf.Member
leaderAddr string
datacenter string
numServers int
minMode structs.ACLMode
leaderMode structs.ACLMode
}
cases := map[string]tcase{
"filter-members": tcase{
members: []serf.Member{
makeMember("consul", "primary", structs.ACLModeLegacy, serf.StatusAlive, net.IP([]byte{127, 0, 0, 1})),
makeMember("consul", "primary", structs.ACLModeLegacy, serf.StatusFailed, net.IP([]byte{127, 0, 0, 2})),
// filter non-server
makeMember("client", "primary", structs.ACLModeUnknown, serf.StatusAlive, net.IP([]byte{127, 0, 0, 3})),
// filtered datacenter
makeMember("consul", "secondary", structs.ACLModeUnknown, serf.StatusAlive, net.IP([]byte{127, 0, 0, 4})),
// filtered status
makeMember("consul", "primary", structs.ACLModeUnknown, serf.StatusLeaving, net.IP([]byte{127, 0, 0, 5})),
// filtered status
makeMember("consul", "primary", structs.ACLModeUnknown, serf.StatusLeft, net.IP([]byte{127, 0, 0, 6})),
// filtered status
makeMember("consul", "primary", structs.ACLModeUnknown, serf.StatusNone, net.IP([]byte{127, 0, 0, 7})),
},
numServers: 2,
leaderAddr: "127.0.0.1:10000",
datacenter: "primary",
minMode: structs.ACLModeLegacy,
leaderMode: structs.ACLModeLegacy,
},
"disabled": tcase{
members: []serf.Member{
makeMember("consul", "primary", structs.ACLModeLegacy, serf.StatusAlive, net.IP([]byte{127, 0, 0, 1})),
makeMember("consul", "primary", structs.ACLModeUnknown, serf.StatusAlive, net.IP([]byte{127, 0, 0, 2})),
makeMember("consul", "primary", structs.ACLModeDisabled, serf.StatusAlive, net.IP([]byte{127, 0, 0, 3})),
},
numServers: 3,
leaderAddr: "127.0.0.1:10000",
datacenter: "",
minMode: structs.ACLModeDisabled,
leaderMode: structs.ACLModeLegacy,
},
"unknown": tcase{
members: []serf.Member{
makeMember("consul", "primary", structs.ACLModeLegacy, serf.StatusAlive, net.IP([]byte{127, 0, 0, 1})),
makeMember("consul", "primary", structs.ACLModeUnknown, serf.StatusAlive, net.IP([]byte{127, 0, 0, 2})),
},
numServers: 2,
leaderAddr: "127.0.0.1:10000",
datacenter: "",
minMode: structs.ACLModeUnknown,
leaderMode: structs.ACLModeLegacy,
},
"legacy": tcase{
members: []serf.Member{
makeMember("consul", "primary", structs.ACLModeEnabled, serf.StatusAlive, net.IP([]byte{127, 0, 0, 1})),
makeMember("consul", "primary", structs.ACLModeLegacy, serf.StatusAlive, net.IP([]byte{127, 0, 0, 2})),
},
numServers: 2,
leaderAddr: "127.0.0.1:10000",
datacenter: "",
minMode: structs.ACLModeLegacy,
leaderMode: structs.ACLModeEnabled,
},
"enabled": tcase{
members: []serf.Member{
makeMember("consul", "primary", structs.ACLModeEnabled, serf.StatusAlive, net.IP([]byte{127, 0, 0, 1})),
makeMember("consul", "primary", structs.ACLModeEnabled, serf.StatusAlive, net.IP([]byte{127, 0, 0, 2})),
makeMember("consul", "primary", structs.ACLModeEnabled, serf.StatusAlive, net.IP([]byte{127, 0, 0, 3})),
},
numServers: 3,
leaderAddr: "127.0.0.1:10000",
datacenter: "",
minMode: structs.ACLModeEnabled,
leaderMode: structs.ACLModeEnabled,
},
"failed-members": tcase{
members: []serf.Member{
makeMember("consul", "primary", structs.ACLModeLegacy, serf.StatusAlive, net.IP([]byte{127, 0, 0, 1})),
makeMember("consul", "primary", structs.ACLModeUnknown, serf.StatusFailed, net.IP([]byte{127, 0, 0, 2})),
makeMember("consul", "primary", structs.ACLModeLegacy, serf.StatusFailed, net.IP([]byte{127, 0, 0, 3})),
},
numServers: 3,
leaderAddr: "127.0.0.1:10000",
datacenter: "",
minMode: structs.ACLModeUnknown,
leaderMode: structs.ACLModeLegacy,
},
}
for name, tc := range cases {
name := name
tc := tc
t.Run(name, func(t *testing.T) {
actualServers, actualMinMode, actualLeaderMode := ServersGetACLMode(tc.members, tc.leaderAddr, tc.datacenter)
require.Equal(t, tc.numServers, actualServers)
require.Equal(t, tc.minMode, actualMinMode)
require.Equal(t, tc.leaderMode, actualLeaderMode)
})
}
}