Discovery

  

Discovery is a based service that is production-ready and primarily used at Bilibili for locating services for the purpose of load balancing and failover of middle-tier servers.

Quick Start

env

go1.12.x (and later)

build

cd $GOPATH/src
git clone https://github.com/bilibili/discovery.git
cd discovery/cmd/discovery
go build

或者：go install github.com/bilibili/discovery/cmd/discovery@latest

run

discovery -conf discovery.toml -alsologtostderr

-alsologtostderr is glog's flag，means print into stderr. If you hope print into file, can use -log.dir="/tmp". view glog doc.

Configuration

You can view the comments in cmd/discovery/discovery.toml to understand the meaning of the config.

Client

• API Doc
• Go SDK | Example
• Java SDK
• CPP SDK
• Python SDK
• other language

Intro/Arch/Practice

• Introduction
• Architecture
• Practice in Bilibili

from https://github.com/bilibili/discovery

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root@racknerd-7b97d8:~# which discovery

/root/go1.18.1.linux-amd64/go/gopath/bin/discovery

root@racknerd-7b97d8:~# discovery -h

Usage of discovery:

  -appid string

    appid is global unique application id, register by service tree. or use APP_ID env variable.

  -conf string

    default config path

  -deploy.color string

    deploy.color is the identification of different experimental group.

  -deploy.env string

    deploy env. or use DEPLOY_ENV env variable, value: dev/fat1/uat/pre/prod etc. (default "dev")

  -discovery.nodes string

    discovery.nodes is seed nodes. value: 127.0.0.1:7171,127.0.0.2:7171 etc.

  -http string

    listen http dsn, or use HTTP env variable. (default "tcp://0.0.0.0:8000/?timeout=1s")

  -http.perf string

    listen http perf dsn, or use HTTP_PERF env variable.

  -log.agent string

    log agent dsn, or use LOG_AGENT env variable.

  -log.dir string

    log file `path, or use LOG_DIR env variable.

  -log.filter value

    log field for sensitive message, or use LOG_FILTER env variable, format: field1,field2.

  -log.module value

    log verbose for specified module, or use LOG_MODULE env variable, format: file=1,file2=2.

  -log.noagent

    force disable log agent print log to stderr,  or use LOG_NO_AGENT

  -log.stdout

    log enable stdout or not, or use LOG_STDOUT env variable.

  -log.v int

    log verbose level, or use LOG_V env variable.

  -region string

    avaliable region. or use REGION env variable, value: sh etc. (default "region01")

  -trace string

    trace report dsn, or use TRACE env. (default "unixgram:///var/run/dapper-collect/dapper-collect.sock")

  -zone string

    avaliable zone. or use ZONE env variable, value: sh001/sh002 etc. (default "zone01")

root@racknerd-7b97d8:~#