chore: improve OpenTelemetry example

This commit is contained in:
Vladimir Mihailenco 2022-10-16 11:11:54 +03:00
parent f6940c80ca
commit 9070a20f41
6 changed files with 460 additions and 25 deletions

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@ -1,40 +1,47 @@
# Example for go-redis OpenTelemetry instrumentation
This example demonstrates how to monitor Redis using OpenTelemetry and
[Uptrace](https://github.com/uptrace/uptrace). It requires Docker to start Redis Server and Uptrace.
See
[Monitoring Go Redis Performance and Errors](https://redis.uptrace.dev/guide/go-redis-monitoring.html)
for details.
This example requires Redis Server on port `:6379`. You can start Redis Server using Docker:
**Step 1**. Download the example using Git:
```shell
git clone https://github.com/go-redis/redis.git
cd example/otel
```
**Step 2**. Start the services using Docker:
```shell
docker-compose pull
docker-compose up -d
```
You can run this example with different OpenTelemetry exporters by providing environment variables.
**Stdout** exporter (default):
**Step 3**. Make sure Uptrace is running:
```shell
go run .
docker-compose logs uptrace
```
[Uptrace](https://github.com/uptrace/uptrace) exporter:
**Step 4**. Run the Redis client example:
```shell
UPTRACE_DSN="https://<token>@uptrace.dev/<project_id>" go run .
UPTRACE_DSN=http://project2_secret_token@localhost:14317/2 go run client.go
```
**Jaeger** exporter:
**Step 5**. Follow the link from the CLI to view the trace:
```shell
OTEL_EXPORTER_JAEGER_ENDPOINT=http://localhost:14268/api/traces go run .
UPTRACE_DSN=http://project2_secret_token@localhost:14317/2 go run client.go
trace: http://localhost:14318/traces/ee029d8782242c8ed38b16d961093b35
```
To instrument Redis Cluster client, see
[go-redis-cluster](https://github.com/uptrace/opentelemetry-go-extra/tree/main/example/go-redis-cluster)
example.
## Links
- [Uptrace open-source APM](https://uptrace.dev/get/open-source-apm.html)
- [OpenTelemetry Go instrumentations](https://uptrace.dev/opentelemetry/instrumentations/?lang=go)
- [OpenTelemetry Go Tracing API](https://uptrace.dev/opentelemetry/go-tracing.html)

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@ -2,10 +2,12 @@ package main
import (
"context"
"fmt"
"log"
"sync"
"time"
"github.com/uptrace/opentelemetry-go-extra/otelplay"
"github.com/uptrace/uptrace-go/uptrace"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/codes"
@ -13,13 +15,19 @@ import (
"github.com/go-redis/redis/v9"
)
var tracer = otel.Tracer("redisexample")
var tracer = otel.Tracer("github.com/go-redis/redis/example/otel")
func main() {
ctx := context.Background()
shutdown := otelplay.ConfigureOpentelemetry(ctx)
defer shutdown()
uptrace.ConfigureOpentelemetry(
// copy your project DSN here or use UPTRACE_DSN env var
// uptrace.WithDSN("https://AQDan_E_EPe3QAF9fMP0PiVr5UWOu4q5@uptrace.dev/1"),
uptrace.WithServiceName("myservice"),
uptrace.WithServiceVersion("v1.0.0"),
)
defer uptrace.Shutdown(ctx)
rdb := redis.NewClient(&redis.Options{
Addr: ":6379",
@ -27,16 +35,26 @@ func main() {
if err := redisotel.InstrumentTracing(rdb); err != nil {
panic(err)
}
ctx, span := tracer.Start(ctx, "handleRequest")
defer span.End()
if err := handleRequest(ctx, rdb); err != nil {
span.RecordError(err)
span.SetStatus(codes.Error, err.Error())
if err := redisotel.InstrumentMetrics(rdb); err != nil {
panic(err)
}
otelplay.PrintTraceID(ctx)
for i := 0; i < 1e6; i++ {
ctx, rootSpan := tracer.Start(ctx, "handleRequest")
if err := handleRequest(ctx, rdb); err != nil {
rootSpan.RecordError(err)
rootSpan.SetStatus(codes.Error, err.Error())
}
rootSpan.End()
if i == 0 {
fmt.Printf("view trace: %s\n", uptrace.TraceURL(rootSpan))
}
time.Sleep(time.Second)
}
}
func handleRequest(ctx context.Context, rdb *redis.Client) error {

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@ -1,9 +1,65 @@
version: '3'
services:
clickhouse:
image: clickhouse/clickhouse-server:22.7
restart: on-failure
environment:
CLICKHOUSE_DB: uptrace
healthcheck:
test: ['CMD', 'wget', '--spider', '-q', 'localhost:8123/ping']
interval: 1s
timeout: 1s
retries: 30
volumes:
- ch_data:/var/lib/clickhouse
ports:
- '8123:8123'
- '9000:9000'
uptrace:
image: 'uptrace/uptrace:latest'
#image: 'uptrace/uptrace-dev:latest'
volumes:
- uptrace_data:/var/lib/uptrace
- ./uptrace.yml:/etc/uptrace/uptrace.yml
#environment:
# - DEBUG=2
ports:
- '14317:14317'
- '14318:14318'
depends_on:
clickhouse:
condition: service_healthy
otel-collector:
image: otel/opentelemetry-collector-contrib:0.58.0
restart: on-failure
user: '0:0' # required for logs
volumes:
- ./otel-collector.yaml:/etc/otelcol-contrib/config.yaml
- /var/lib/docker/containers:/var/lib/docker/containers:ro
- /var/log:/var/log:ro
ports:
- '4317:4317'
- '4318:4318'
vector:
image: timberio/vector:0.24.X-alpine
volumes:
- ./vector.toml:/etc/vector/vector.toml:ro
redis-server:
image: redis
ports:
- '6379:6379'
redis-cli:
image: redis
volumes:
uptrace_data:
driver: local
ch_data:
driver: local
alertmanager_data:
driver: local

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@ -0,0 +1,68 @@
extensions:
health_check:
pprof:
endpoint: 0.0.0.0:1777
zpages:
endpoint: 0.0.0.0:55679
receivers:
otlp:
protocols:
grpc:
http:
hostmetrics:
collection_interval: 10s
scrapers:
cpu:
disk:
load:
filesystem:
memory:
network:
paging:
redis:
endpoint: 'redis-server:6379'
collection_interval: 10s
jaeger:
protocols:
grpc:
processors:
resourcedetection:
detectors: ['system']
batch:
send_batch_size: 10000
timeout: 10s
exporters:
logging:
logLevel: debug
otlp:
endpoint: uptrace:14317
tls:
insecure: true
headers: { 'uptrace-dsn': 'http://project2_secret_token@localhost:14317/2' }
service:
# telemetry:
# logs:
# level: DEBUG
pipelines:
traces:
receivers: [otlp, jaeger]
processors: [batch]
exporters: [otlp, logging]
metrics:
receivers: [otlp]
processors: [batch]
exporters: [otlp]
metrics/hostmetrics:
receivers: [hostmetrics, redis]
processors: [batch, resourcedetection]
exporters: [otlp]
logs:
receivers: [otlp]
processors: [batch]
exporters: [otlp]
extensions: [health_check, pprof, zpages]

247
example/otel/uptrace.yml Normal file
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@ -0,0 +1,247 @@
##
## Uptrace configuration file.
## See https://uptrace.dev/get/config.html for details.
##
## You can use environment variables anywhere in this file, for example:
##
## foo: $FOO
## bar: ${BAR}
## baz: ${BAZ:default}
##
## To escape `$`, use `$$`, for example:
##
## foo: $$FOO_BAR
##
##
## A list of pre-configured projects. Each project is fully isolated.
##
projects:
# Conventionally, the first project is used to monitor Uptrace itself.
- id: 1
name: Uptrace
# Token grants write access to the project. Keep a secret.
token: project1_secret_token
pinned_attrs:
- service.name
- host.name
- deployment.environment
# Other projects can be used to monitor your applications.
# To monitor micro-services or multiple related services, use a single project.
- id: 2
name: My project
token: project2_secret_token
pinned_attrs:
- service.name
- host.name
- deployment.environment
##
## To require authentication, uncomment the following section.
##
auth:
# users:
# - username: uptrace
# password: uptrace
# - username: admin
# password: admin
# # Cloudflare user provider: uses Cloudflare Zero Trust Access (Identity)
# # See https://developers.cloudflare.com/cloudflare-one/identity/ for more info.
# cloudflare:
# # The base URL of the Cloudflare Zero Trust team.
# - team_url: https://myteam.cloudflareaccess.com
# # The Application Audience (AUD) Tag for this application.
# # You can retrieve this from the Cloudflare Zero Trust 'Access' Dashboard.
# audience: bea6df23b944e4a0cd178609ba1bb64dc98dfe1f66ae7b918e563f6cf28b37e0
# # OpenID Connect (Single Sign-On)
# oidc:
# # The ID is used in API endpoints, for example, in redirect URL
# # `http://<uptrace-host>/api/v1/sso/<oidc-id>/callback`.
# - id: keycloak
# # Display name for the button in the login form.
# # Default to 'OpenID Connect'
# display_name: Keycloak
# # The base URL for the OIDC provider.
# issuer_url: http://localhost:8080/realms/uptrace
# # The OAuth 2.0 Client ID
# client_id: uptrace
# # The OAuth 2.0 Client Secret
# client_secret: ogbhd8Q0X0e5AZFGSG3m9oirPvnetqkA
# # Additional OAuth 2.0 scopes to request from the OIDC provider.
# # Defaults to 'profile'. 'openid' is requested by default and need not be specified.
# scopes:
# - profile
# # The OIDC UserInfo claim to use as the user's username.
# # Defaults to 'preferred_username'.
# claim: preferred_username
##
## ClickHouse database credentials.
##
ch:
# Connection string for ClickHouse database. For example:
# clickhouse://<user>:<password>@<host>:<port>/<database>?sslmode=disable
#
# See https://clickhouse.uptrace.dev/guide/golang-clickhouse.html#options
dsn: 'clickhouse://default:@clickhouse:9000/uptrace?sslmode=disable'
##
## Alerting rules for monitoring metrics.
##
## See https://uptrace.dev/get/alerting.html for details.
##
alerting:
rules:
- name: Network errors
metrics:
- system.network.errors as $net_errors
query:
- $net_errors > 0 group by host.name
# for the last 5 minutes
for: 5m
# in the project id=1
projects: [1]
- name: Filesystem usage >= 90%
metrics:
- system.filesystem.usage as $fs_usage
query:
- group by host.name
- group by device
- where device !~ "loop"
- $fs_usage{state="used"} / $fs_usage >= 0.9
for: 5m
projects: [1]
- name: Uptrace is dropping spans
metrics:
- uptrace.projects.spans as $spans
query:
- $spans{type=dropped} > 0
for: 1m
projects: [1]
- name: Always firing (for fun and testing)
metrics:
- process.runtime.go.goroutines as $goroutines
query:
- $goroutines >= 0 group by host.name
for: 1m
projects: [1]
# Create alerts from error logs and span events.
create_alerts_from_spans:
enabled: true
labels:
alert_kind: error
##
## AlertManager client configuration.
## See https://uptrace.dev/get/alerting.html for details.
##
## Note that this is NOT an AlertManager config and you need to configure AlertManager separately.
## See https://prometheus.io/docs/alerting/latest/configuration/ for details.
##
alertmanager_client:
# AlertManager API endpoints that Uptrace uses to manage alerts.
# urls:
# - 'http://alertmanager:9093/api/v2/alerts'
##
## Various options to tweak ClickHouse schema.
## For changes to take effect, you need reset the ClickHouse database with `ch reset`.
##
ch_schema:
# Compression codec, for example, LZ4, ZSTD(3), or Default.
compression: ZSTD(3)
# Whether to use ReplicatedMergeTree instead of MergeTree.
replicated: false
# Cluster name for Distributed tables and ON CLUSTER clause.
#cluster: uptrace1
spans:
storage_policy: 'default'
# Delete spans data after 30 days.
ttl_delete: 30 DAY
metrics:
storage_policy: 'default'
# Delete metrics data after 90 days.
ttl_delete: 90 DAY
##
## Addresses on which Uptrace receives gRPC and HTTP requests.
##
listen:
# OTLP/gRPC API.
grpc:
addr: ':14317'
# tls:
# cert_file: config/tls/uptrace.crt
# key_file: config/tls/uptrace.key
# OTLP/HTTP API and Uptrace API with UI.
http:
addr: ':14318'
# tls:
# cert_file: config/tls/uptrace.crt
# key_file: config/tls/uptrace.key
##
## Various options for Uptrace UI.
##
site:
# Overrides public URL for Vue-powered UI in case you put Uptrace behind a proxy.
#addr: 'https://uptrace.mydomain.com'
##
## Spans processing options.
##
spans:
# The size of the Go chan used to buffer incoming spans.
# If the buffer is full, Uptrace starts to drop spans.
#buffer_size: 100000
# The number of spans to insert in a single query.
#batch_size: 10000
##
## Metrics processing options.
##
metrics:
# List of attributes to drop for being noisy.
drop_attrs:
- telemetry.sdk.language
- telemetry.sdk.name
- telemetry.sdk.version
# The size of the Go chan used to buffer incoming measures.
# If the buffer is full, Uptrace starts to drop measures.
#buffer_size: 100000
# The number of measures to insert in a single query.
#batch_size: 10000
##
## SQLite/PostgreSQL db that is used to store metadata such us metric names, dashboards, alerts,
## and so on.
##
db:
# Either sqlite or postgres.
driver: sqlite
# Database connection string.
#
# Uptrace automatically creates SQLite database file in the current working directory.
# Make sure the directory is writable by Uptrace process.
dsn: 'file:uptrace.sqlite3?_pragma=foreign_keys(1)&_pragma=busy_timeout(1000)'
# Secret key that is used to sign JWT tokens etc.
secret_key: 102c1a557c314fc28198acd017960843
# Enable to log HTTP requests and database queries.
debug: false

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example/otel/vector.toml Normal file
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@ -0,0 +1,39 @@
[sources.syslog_logs]
type = "demo_logs"
format = "syslog"
interval = 0.1
[sources.apache_common_logs]
type = "demo_logs"
format = "apache_common"
interval = 0.1
[sources.apache_error_logs]
type = "demo_logs"
format = "apache_error"
interval = 0.1
[sources.json_logs]
type = "demo_logs"
format = "json"
interval = 0.1
# Parse Syslog logs
# See the Vector Remap Language reference for more info: https://vrl.dev
[transforms.parse_logs]
type = "remap"
inputs = ["syslog_logs"]
source = '''
. = parse_syslog!(string!(.message))
'''
# Export data to Uptrace.
[sinks.uptrace]
type = "http"
inputs = ["parse_logs", "apache_common_logs", "apache_error_logs", "json_logs"]
encoding.codec = "json"
framing.method = "newline_delimited"
compression = "gzip"
uri = "http://uptrace:14318/api/v1/vector/logs"
#uri = "https://api.uptrace.dev/api/v1/vector/logs"
headers.uptrace-dsn = "http://project2_secret_token@localhost:14317/2"