-
Notifications
You must be signed in to change notification settings - Fork 7.6k
/
monitoring.go
188 lines (163 loc) · 6.66 KB
/
monitoring.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
// Copyright Istio Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package xds
import (
"sync"
"time"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"istio.io/istio/pilot/pkg/model"
v3 "istio.io/istio/pilot/pkg/xds/v3"
"istio.io/istio/pkg/monitoring"
)
var (
typeTag = monitoring.CreateLabel("type")
versionTag = monitoring.CreateLabel("version")
monServices = monitoring.NewGauge(
"pilot_services",
"Total services known to pilot.",
)
// TODO: Update all the resource stats in separate routine
// virtual services, destination rules, gateways, etc.
xdsClients = monitoring.NewGauge(
"pilot_xds",
"Number of endpoints connected to this pilot using XDS.",
)
xdsClientTrackerMutex = &sync.Mutex{}
xdsClientTracker = make(map[string]float64)
// Covers xds_builderr and xds_senderr for xds in {lds, rds, cds, eds}.
pushes = monitoring.NewSum(
"pilot_xds_pushes",
"Pilot build and send errors for lds, rds, cds and eds.",
)
cdsSendErrPushes = pushes.With(typeTag.Value("cds_senderr"))
edsSendErrPushes = pushes.With(typeTag.Value("eds_senderr"))
ldsSendErrPushes = pushes.With(typeTag.Value("lds_senderr"))
rdsSendErrPushes = pushes.With(typeTag.Value("rds_senderr"))
debounceTime = monitoring.NewDistribution(
"pilot_debounce_time",
"Delay in seconds between the first config enters debouncing and the merged push request is pushed into the push queue.",
[]float64{.01, .1, 1, 3, 5, 10, 20, 30},
)
pushContextInitTime = monitoring.NewDistribution(
"pilot_pushcontext_init_seconds",
"Total time in seconds Pilot takes to init pushContext.",
[]float64{.01, .1, 0.5, 1, 3, 5},
)
pushTime = monitoring.NewDistribution(
"pilot_xds_push_time",
"Total time in seconds Pilot takes to push lds, rds, cds and eds.",
[]float64{.01, .1, 1, 3, 5, 10, 20, 30},
)
proxiesQueueTime = monitoring.NewDistribution(
"pilot_proxy_queue_time",
"Time in seconds, a proxy is in the push queue before being dequeued.",
[]float64{.1, .5, 1, 3, 5, 10, 20, 30},
)
pushTriggers = monitoring.NewSum(
"pilot_push_triggers",
"Total number of times a push was triggered, labeled by reason for the push.",
)
proxiesConvergeDelay = monitoring.NewDistribution(
"pilot_proxy_convergence_time",
"Delay in seconds between config change and a proxy receiving all required configuration.",
[]float64{.1, .5, 1, 3, 5, 10, 20, 30},
)
pushContextErrors = monitoring.NewSum(
"pilot_xds_push_context_errors",
"Number of errors (timeouts) initiating push context.",
)
inboundUpdates = monitoring.NewSum(
"pilot_inbound_updates",
"Total number of updates received by pilot.",
)
pilotSDSCertificateErrors = monitoring.NewSum(
"pilot_sds_certificate_errors_total",
"Total number of failures to fetch SDS key and certificate.",
)
inboundConfigUpdates = inboundUpdates.With(typeTag.Value("config"))
inboundEDSUpdates = inboundUpdates.With(typeTag.Value("eds"))
inboundServiceUpdates = inboundUpdates.With(typeTag.Value("svc"))
inboundServiceDeletes = inboundUpdates.With(typeTag.Value("svcdelete"))
configSizeBytes = monitoring.NewDistribution(
"pilot_xds_config_size_bytes",
"Distribution of configuration sizes pushed to clients",
// Important boundaries: 10K, 1M, 4M, 10M, 40M
// 4M default limit for gRPC, 10M config will start to strain system,
// 40M is likely upper-bound on config sizes supported.
[]float64{1, 10000, 1000000, 4000000, 10000000, 40000000},
monitoring.WithUnit(monitoring.Bytes),
)
)
func recordXDSClients(version string, delta float64) {
xdsClientTrackerMutex.Lock()
defer xdsClientTrackerMutex.Unlock()
xdsClientTracker[version] += delta
xdsClients.With(versionTag.Value(version)).Record(xdsClientTracker[version])
}
// triggerMetric is a precomputed monitoring.Metric for each trigger type. This saves on a lot of allocations
var triggerMetric = map[model.TriggerReason]monitoring.Metric{
model.EndpointUpdate: pushTriggers.With(typeTag.Value(string(model.EndpointUpdate))),
model.ConfigUpdate: pushTriggers.With(typeTag.Value(string(model.ConfigUpdate))),
model.ServiceUpdate: pushTriggers.With(typeTag.Value(string(model.ServiceUpdate))),
model.ProxyUpdate: pushTriggers.With(typeTag.Value(string(model.ProxyUpdate))),
model.GlobalUpdate: pushTriggers.With(typeTag.Value(string(model.GlobalUpdate))),
model.UnknownTrigger: pushTriggers.With(typeTag.Value(string(model.UnknownTrigger))),
model.DebugTrigger: pushTriggers.With(typeTag.Value(string(model.DebugTrigger))),
model.SecretTrigger: pushTriggers.With(typeTag.Value(string(model.SecretTrigger))),
model.NetworksTrigger: pushTriggers.With(typeTag.Value(string(model.NetworksTrigger))),
model.ProxyRequest: pushTriggers.With(typeTag.Value(string(model.ProxyRequest))),
model.NamespaceUpdate: pushTriggers.With(typeTag.Value(string(model.NamespaceUpdate))),
model.ClusterUpdate: pushTriggers.With(typeTag.Value(string(model.ClusterUpdate))),
}
func recordPushTriggers(reasons model.ReasonStats) {
for r, cnt := range reasons {
t, f := triggerMetric[r]
if f {
t.RecordInt(int64(cnt))
} else {
pushTriggers.With(typeTag.Value(string(r))).Increment()
}
}
}
func isUnexpectedError(err error) bool {
s, ok := status.FromError(err)
// Unavailable or canceled code will be sent when a connection is closing down. This is very normal,
// due to the XDS connection being dropped every 30 minutes, or a pod shutting down.
isError := s.Code() != codes.Unavailable && s.Code() != codes.Canceled
return !ok || isError
}
// recordSendError records a metric indicating that a push failed. It returns true if this was an unexpected
// error
func recordSendError(xdsType string, err error) bool {
if isUnexpectedError(err) {
// TODO use a single metric with a type tag
switch xdsType {
case v3.ListenerType:
ldsSendErrPushes.Increment()
case v3.ClusterType:
cdsSendErrPushes.Increment()
case v3.EndpointType:
edsSendErrPushes.Increment()
case v3.RouteType:
rdsSendErrPushes.Increment()
}
return true
}
return false
}
func recordPushTime(xdsType string, duration time.Duration) {
pushTime.With(typeTag.Value(v3.GetMetricType(xdsType))).Record(duration.Seconds())
pushes.With(typeTag.Value(v3.GetMetricType(xdsType))).Increment()
}