1009 lines
32 KiB
Markdown
1009 lines
32 KiB
Markdown
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___
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# <a id="top"></a> Documentation
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- [Basics](#basics)
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- [Launch configuration](#launch)
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- [Global configuration](#global)
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- [File backend](#file)
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- [API backend](#api)
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- [Docker backend](#docker)
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- [Mesos/Marathon backend](#marathon)
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- [Consul backend](#consul)
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- [Etcd backend](#etcd)
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- [Zookeeper backend](#zk)
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- [Boltdb backend](#boltdb)
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- [Benchmarks](#benchmarks)
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## <a id="basics"></a> Basics
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Træfɪk is a modern HTTP reverse proxy and load balancer made to deploy microservices with ease.
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It supports several backends ([Docker :whale:](https://www.docker.com/), [Mesos/Marathon](https://mesosphere.github.io/marathon/), [Consul](https://consul.io/), [Etcd](https://coreos.com/etcd/), Rest API, file...) to manage its configuration automatically and dynamically.
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Basically, Træfɪk is a http router, which sends traffic from frontends to http backends, following rules you have configured.
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### <a id="frontends"></a> Frontends
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Frontends can be defined using the following rules:
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- `Headers`: Headers adds a matcher for request header values. It accepts a sequence of key/value pairs to be matched. For example: `application/json`
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- `HeadersRegexp`: Regular expressions can be used with headers as well. It accepts a sequence of key/value pairs, where the value has regex support. For example: `application/(text|json)`
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- `Host`: Host adds a matcher for the URL host. It accepts a template with zero or more URL variables enclosed by `{}`. Variables can define an optional regexp pattern to be matched: `www.traefik.io`, `{subdomain:[a-z]+}.traefik.io`
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- `Methods`: Methods adds a matcher for HTTP methods. It accepts a sequence of one or more methods to be matched, e.g.: `GET`, `POST`, `PUT`
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- `Path`: Path adds a matcher for the URL path. It accepts a template with zero or more URL variables enclosed by `{}`. The template must start with a `/`. For exemple `/products/` `/articles/{category}/{id:[0-9]+}`
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- `PathPrefix`: PathPrefix adds a matcher for the URL path prefix. This matches if the given template is a prefix of the full URL path.
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A frontend is a set of rules that forwards the incoming http traffic to a backend.
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You can optionally enable `passHostHeader` to
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- []forward client `Host` header to the backend.
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### HTTP Backends
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A backend is responsible to load-balance the traffic coming from one or more frontends to a set of http servers.
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Various methods of load-balancing is supported:
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- `wrr`: Weighted Round Robin
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- `drr`: Dynamic Round Robin: increases weights on servers that perform better than others. It also rolls back to original weights if the servers have changed.
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A circuit breaker can also be applied to a backend, preventing high loads on failing servers.
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It can be configured using:
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- Methods: `LatencyAtQuantileMS`, `NetworkErrorRatio`, `ResponseCodeRatio`
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- Operators: `AND`, `OR`, `EQ`, `NEQ`, `LT`, `LE`, `GT`, `GE`
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For example:
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- `NetworkErrorRatio() > 0.5`
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- `LatencyAtQuantileMS(50.0) > 50`
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- `ResponseCodeRatio(500, 600, 0, 600) > 0.5`
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## <a id="launch"></a> Launch configuration
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Træfɪk can be configured using a TOML file configuration, arguments, or both.
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By default, Træfɪk will try to find a `traefik.toml` in the following places:
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- `/etc/traefik/`
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- `$HOME/.traefik/`
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- `.` the working directory
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You can override this by setting a `configFile` argument:
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```bash
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$ traefik --configFile=foo/bar/myconfigfile.toml
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```
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Træfɪk uses the following precedence order. Each item takes precedence over the item below it:
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- arguments
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- configuration file
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- default
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It means that arguments overrides configuration file.
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Each argument is described in the help section:
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```bash
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$ traefik --help
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traefik is a modern HTTP reverse proxy and load balancer made to deploy microservices with ease.
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Complete documentation is available at http://traefik.io
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Usage:
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traefik [flags]
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traefik [command]
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Available Commands:
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version Print version
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Flags:
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--accessLogsFile string Access logs file (default "log/access.log")
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--boltdb Enable Boltdb backend
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--boltdb.endpoint string Boltdb server endpoint (default "127.0.0.1:4001")
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--boltdb.filename string Override default configuration template. For advanced users :)
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--boltdb.prefix string Prefix used for KV store (default "/traefik")
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--boltdb.watch Watch provider (default true)
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--certificates value SSL certificates and keys pair, ie 'tests/traefik.crt,tests/traefik.key'. You may add several certificate/key pairs to terminate HTTPS for multiple domain names using TLS SNI
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-c, --configFile string Configuration file to use (TOML, JSON, YAML, HCL).
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--consul Enable Consul backend
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--consul.endpoint string Consul server endpoint (default "127.0.0.1:8500")
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--consul.filename string Override default configuration template. For advanced users :)
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--consul.prefix string Prefix used for KV store (default "/traefik")
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--consul.watch Watch provider (default true)
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--docker Enable Docker backend
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--docker.domain string Default domain used
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--docker.endpoint string Docker server endpoint. Can be a tcp or a unix socket endpoint (default "unix:///var/run/docker.sock")
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--docker.filename string Override default configuration template. For advanced users :)
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--docker.tls Enable Docker TLS support
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--docker.tls.ca string TLS CA
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--docker.tls.cert string TLS cert
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--docker.tls.insecureSkipVerify TLS insecure skip verify
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--docker.tls.key string TLS key
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--docker.watch Watch provider (default true)
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--etcd Enable Etcd backend
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--etcd.endpoint string Etcd server endpoint (default "127.0.0.1:4001")
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--etcd.filename string Override default configuration template. For advanced users :)
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--etcd.prefix string Prefix used for KV store (default "/traefik")
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--etcd.watch Watch provider (default true)
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--file Enable File backend
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--file.filename string Override default configuration template. For advanced users :)
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--file.watch Watch provider (default true)
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-g, --graceTimeOut string Timeout in seconds. Duration to give active requests a chance to finish during hot-reloads (default "10")
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-l, --logLevel string Log level (default "ERROR")
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--marathon Enable Marathon backend
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--marathon.domain string Default domain used
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--marathon.endpoint string Marathon server endpoint. You can also specify multiple endpoint for Marathon (default "http://127.0.0.1:8080")
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--marathon.filename string Override default configuration template. For advanced users :)
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--marathon.networkInterface string Network interface used to call Marathon web services. Needed in case of multiple network interfaces (default "eth0")
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--marathon.watch Watch provider (default true)
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--maxIdleConnsPerHost int If non-zero, controls the maximum idle (keep-alive) to keep per-host. If zero, DefaultMaxIdleConnsPerHost is used
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-p, --port string Reverse proxy port (default ":80")
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--providersThrottleDuration duration Backends throttle duration: minimum duration between 2 events from providers before applying a new configuration. It avoids unnecessary reloads if multiples events are sent in a short amount of time. (default 2s)
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--traefikLogsFile string Traefik logs file (default "log/traefik.log")
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--web Enable Web backend
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--web.address string Web administration port (default ":8080")
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--web.cerFile string SSL certificate
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--web.keyFile string SSL certificate
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--web.readOnly Enable read only API
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--zookeeper Enable Zookeeper backend
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--zookeeper.endpoint string Zookeeper server endpoint (default "127.0.0.1:2181")
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--zookeeper.filename string Override default configuration template. For advanced users :)
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--zookeeper.prefix string Prefix used for KV store (default "/traefik")
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--zookeeper.watch Watch provider (default true)
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Use "traefik [command] --help" for more information about a command.
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```
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## <a id="global"></a> Global configuration
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```toml
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# traefik.toml
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################################################################
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# Global configuration
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################################################################
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# Reverse proxy port
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#
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# Optional
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# Default: ":80"
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#
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# port = ":80"
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# Timeout in seconds.
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# Duration to give active requests a chance to finish during hot-reloads
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#
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# Optional
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# Default: 10
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#
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# graceTimeOut = 10
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# Traefik logs file
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# If not defined, logs to stdout
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#
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# Optional
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#
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# traefikLogsFile = "log/traefik.log"
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# Access logs file
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#
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# Optional
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#
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# accessLogsFile = "log/access.log"
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# Log level
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#
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# Optional
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# Default: "ERROR"
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#
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# logLevel = "ERROR"
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# SSL certificates and keys
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# You may add several certificate/key pairs to terminate HTTPS for multiple domain names using TLS SNI
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#
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# Optional
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#
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# [[certificates]]
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# CertFile = "traefik.crt"
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# KeyFile = "traefik.key"
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# Backends throttle duration: minimum duration between 2 events from providers
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# before applying a new configuration. It avoids unnecessary reloads if multiples events
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# are sent in a short amount of time.
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#
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# Optional
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# Default: "2s"
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#
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# ProvidersThrottleDuration = "5s"
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# If non-zero, controls the maximum idle (keep-alive) to keep per-host. If zero, DefaultMaxIdleConnsPerHost is used.
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# If you encounter 'too many open files' errors, you can either change this value, or change `ulimit` value.
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#
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# Optional
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# Default: http.DefaultMaxIdleConnsPerHost
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#
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# MaxIdleConnsPerHost = 200
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```
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## <a id="file"></a> File backend
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Like any other reverse proxy, Træfɪk can be configured with a file. You have two choices:
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- simply add your configuration at the end of the global configuration file `traefik.toml` :
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```toml
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# traefik.toml
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port = ":80"
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graceTimeOut = 10
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logLevel = "DEBUG"
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[file]
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# rules
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[backends]
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[backends.backend1]
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[backends.backend1.circuitbreaker]
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expression = "NetworkErrorRatio() > 0.5"
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[backends.backend1.servers.server1]
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url = "http://172.17.0.2:80"
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weight = 10
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[backends.backend1.servers.server2]
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url = "http://172.17.0.3:80"
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weight = 1
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[backends.backend2]
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[backends.backend2.LoadBalancer]
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method = "drr"
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[backends.backend2.servers.server1]
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url = "http://172.17.0.4:80"
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weight = 1
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[backends.backend2.servers.server2]
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url = "http://172.17.0.5:80"
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weight = 2
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[frontends]
|
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[frontends.frontend1]
|
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backend = "backend2"
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[frontends.frontend1.routes.test_1]
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rule = "Host"
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value = "test.localhost"
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[frontends.frontend2]
|
||
backend = "backend1"
|
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passHostHeader = true
|
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[frontends.frontend2.routes.test_2]
|
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rule = "Path"
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value = "/test"
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```
|
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|
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- or put your rules in a separate file, for example `rules.tml`:
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||
|
||
```toml
|
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# traefik.toml
|
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port = ":80"
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graceTimeOut = 10
|
||
logLevel = "DEBUG"
|
||
|
||
[file]
|
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filename = "rules.toml"
|
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```
|
||
|
||
```toml
|
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# rules.toml
|
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[backends]
|
||
[backends.backend1]
|
||
[backends.backend1.circuitbreaker]
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expression = "NetworkErrorRatio() > 0.5"
|
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[backends.backend1.servers.server1]
|
||
url = "http://172.17.0.2:80"
|
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weight = 10
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[backends.backend1.servers.server2]
|
||
url = "http://172.17.0.3:80"
|
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weight = 1
|
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[backends.backend2]
|
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[backends.backend2.LoadBalancer]
|
||
method = "drr"
|
||
[backends.backend2.servers.server1]
|
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url = "http://172.17.0.4:80"
|
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weight = 1
|
||
[backends.backend2.servers.server2]
|
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url = "http://172.17.0.5:80"
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weight = 2
|
||
|
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[frontends]
|
||
[frontends.frontend1]
|
||
backend = "backend2"
|
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[frontends.frontend1.routes.test_1]
|
||
rule = "Host"
|
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value = "test.localhost"
|
||
[frontends.frontend2]
|
||
backend = "backend1"
|
||
passHostHeader = true
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[frontends.frontend2.routes.test_2]
|
||
rule = "Path"
|
||
value = "/test"
|
||
|
||
```
|
||
|
||
If you want Træfɪk to watch file changes automatically, just add:
|
||
|
||
```toml
|
||
[file]
|
||
watch = true
|
||
```
|
||
|
||
## <a id="api"></a> API backend
|
||
|
||
Træfik can be configured using a restful api.
|
||
To enable it:
|
||
|
||
```toml
|
||
[web]
|
||
address = ":8080"
|
||
|
||
# SSL certificate and key used
|
||
#
|
||
# Optional
|
||
#
|
||
# CertFile = "traefik.crt"
|
||
# KeyFile = "traefik.key"
|
||
#
|
||
# Set REST API to read-only mode
|
||
#
|
||
# Optional
|
||
# ReadOnly = false
|
||
```
|
||
|
||
- `/`: provides a simple HTML frontend of Træfik
|
||
|
||
|
||
|
||
|
||
- `/health`: `GET` json metrics
|
||
|
||
```sh
|
||
$ curl -s "http://localhost:8080/health" | jq .
|
||
{
|
||
// Træfɪk PID
|
||
"pid": 2458,
|
||
// Træfɪk server uptime (formated time)
|
||
"uptime": "39m6.885931127s",
|
||
// Træfɪk server uptime in seconds
|
||
"uptime_sec": 2346.885931127,
|
||
// current server date
|
||
"time": "2015-10-07 18:32:24.362238909 +0200 CEST",
|
||
// current server date in seconds
|
||
"unixtime": 1444235544,
|
||
// count HTTP response status code in realtime
|
||
"status_code_count": {
|
||
"502": 1
|
||
},
|
||
// count HTTP response status code since Træfɪk started
|
||
"total_status_code_count": {
|
||
"200": 7,
|
||
"404": 21,
|
||
"502": 13
|
||
},
|
||
// count HTTP response
|
||
"count": 1,
|
||
// count HTTP response
|
||
"total_count": 41,
|
||
// sum of all response time (formated time)
|
||
"total_response_time": "35.456865605s",
|
||
// sum of all response time in seconds
|
||
"total_response_time_sec": 35.456865605,
|
||
// average response time (formated time)
|
||
"average_response_time": "864.8016ms",
|
||
// average response time in seconds
|
||
"average_response_time_sec": 0.8648016000000001
|
||
}
|
||
```
|
||
|
||
- `/api`: `GET` configuration for all providers
|
||
|
||
```sh
|
||
$ curl -s "http://localhost:8080/api" | jq .
|
||
{
|
||
"file": {
|
||
"frontends": {
|
||
"frontend2": {
|
||
"routes": {
|
||
"test_2": {
|
||
"value": "/test",
|
||
"rule": "Path"
|
||
}
|
||
},
|
||
"backend": "backend1"
|
||
},
|
||
"frontend1": {
|
||
"routes": {
|
||
"test_1": {
|
||
"value": "test.localhost",
|
||
"rule": "Host"
|
||
}
|
||
},
|
||
"backend": "backend2"
|
||
}
|
||
},
|
||
"backends": {
|
||
"backend2": {
|
||
"loadBalancer": {
|
||
"method": "drr"
|
||
},
|
||
"servers": {
|
||
"server2": {
|
||
"weight": 2,
|
||
"URL": "http://172.17.0.5:80"
|
||
},
|
||
"server1": {
|
||
"weight": 1,
|
||
"url": "http://172.17.0.4:80"
|
||
}
|
||
}
|
||
},
|
||
"backend1": {
|
||
"loadBalancer": {
|
||
"method": "wrr"
|
||
},
|
||
"circuitBreaker": {
|
||
"expression": "NetworkErrorRatio() > 0.5"
|
||
},
|
||
"servers": {
|
||
"server2": {
|
||
"weight": 1,
|
||
"url": "http://172.17.0.3:80"
|
||
},
|
||
"server1": {
|
||
"weight": 10,
|
||
"url": "http://172.17.0.2:80"
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
```
|
||
|
||
- `/api/providers`: `GET` providers
|
||
- `/api/providers/{provider}`: `GET` or `PUT` provider
|
||
- `/api/providers/{provider}/backends`: `GET` backends
|
||
- `/api/providers/{provider}/backends/{backend}`: `GET` a backend
|
||
- `/api/providers/{provider}/backends/{backend}/servers`: `GET` servers in a backend
|
||
- `/api/providers/{provider}/backends/{backend}/servers/{server}`: `GET` a server in a backend
|
||
- `/api/providers/{provider}/frontends`: `GET` frontends
|
||
- `/api/providers/{provider}/frontends/{frontend}`: `GET` a frontend
|
||
- `/api/providers/{provider}/frontends/{frontend}/routes`: `GET` routes in a frontend
|
||
- `/api/providers/{provider}/frontends/{frontend}/routes/{route}`: `GET` a route in a frontend
|
||
|
||
|
||
## <a id="docker"></a> Docker backend
|
||
|
||
Træfɪk can be configured to use Docker as a backend configuration:
|
||
|
||
```toml
|
||
################################################################
|
||
# Docker configuration backend
|
||
################################################################
|
||
|
||
# Enable Docker configuration backend
|
||
#
|
||
# Optional
|
||
#
|
||
[docker]
|
||
|
||
# Docker server endpoint. Can be a tcp or a unix socket endpoint.
|
||
#
|
||
# Required
|
||
#
|
||
endpoint = "unix:///var/run/docker.sock"
|
||
|
||
# Default domain used.
|
||
# Can be overridden by setting the "traefik.domain" label on a container.
|
||
#
|
||
# Required
|
||
#
|
||
domain = "docker.localhost"
|
||
|
||
# Enable watch docker changes
|
||
#
|
||
# Optional
|
||
#
|
||
watch = true
|
||
|
||
# Override default configuration template. For advanced users :)
|
||
#
|
||
# Optional
|
||
#
|
||
# filename = "docker.tmpl"
|
||
|
||
# Enable docker TLS connection
|
||
#
|
||
# [docker.tls]
|
||
# ca = "/etc/ssl/ca.crt"
|
||
# cert = "/etc/ssl/docker.crt"
|
||
# key = "/etc/ssl/docker.key"
|
||
# insecureskipverify = true
|
||
```
|
||
|
||
Labels can be used on containers to override default behaviour:
|
||
|
||
- `traefik.backend=foo`: assign the container to `foo` backend
|
||
- `traefik.port=80`: register this port. Useful when the container exposes multiples ports.
|
||
- `traefik.protocol=https`: override the default `http` protocol
|
||
- `traefik.weight=10`: assign this weight to the container
|
||
- `traefik.enable=false`: disable this container in Træfɪk
|
||
- `traefik.frontend.rule=Host`: override the default frontend rule (Default: Host). See [frontends](#frontends).
|
||
- `traefik.frontend.value=test.example.com`: override the default frontend value (Default: `{containerName}.{domain}`) See [frontends](#frontends). Must be associated with label traefik.frontend.rule.
|
||
- `traefik.frontend.passHostHeader=true`: forward client `Host` header to the backend.
|
||
* `traefik.domain=traefik.localhost`: override the default domain
|
||
|
||
|
||
## <a id="marathon"></a> Marathon backend
|
||
|
||
Træfɪk can be configured to use Marathon as a backend configuration:
|
||
|
||
|
||
```toml
|
||
################################################################
|
||
# Mesos/Marathon configuration backend
|
||
################################################################
|
||
|
||
# Enable Marathon configuration backend
|
||
#
|
||
# Optional
|
||
#
|
||
[marathon]
|
||
|
||
# Marathon server endpoint.
|
||
# You can also specify multiple endpoint for Marathon:
|
||
# endpoint := "http://10.241.1.71:8080,10.241.1.72:8080,10.241.1.73:8080"
|
||
#
|
||
# Required
|
||
#
|
||
endpoint = "http://127.0.0.1:8080"
|
||
|
||
# Network interface used to call Marathon web services
|
||
# Optional
|
||
# Default: "eth0"
|
||
#
|
||
# networkInterface = "eth0"
|
||
|
||
# Enable watch Marathon changes
|
||
#
|
||
# Optional
|
||
#
|
||
watch = true
|
||
|
||
# Default domain used.
|
||
# Can be overridden by setting the "traefik.domain" label on an application.
|
||
#
|
||
# Required
|
||
#
|
||
domain = "marathon.localhost"
|
||
|
||
# Override default configuration template. For advanced users :)
|
||
#
|
||
# Optional
|
||
#
|
||
# filename = "marathon.tmpl"
|
||
```
|
||
|
||
Labels can be used on containers to override default behaviour:
|
||
|
||
- `traefik.backend=foo`: assign the application to `foo` backend
|
||
- `traefik.portIndex=1`: register port by index in the application's ports array. Useful when the application exposes multiple ports.
|
||
- `traefik.port=80`: register the explicit application port value. Cannot be used alongside `traefik.portIndex`.
|
||
- `traefik.protocol=https`: override the default `http` protocol
|
||
- `traefik.weight=10`: assign this weight to the application
|
||
- `traefik.enable=false`: disable this application in Træfɪk
|
||
- `traefik.frontend.rule=Host`: override the default frontend rule (Default: Host). See [frontends](#frontends).
|
||
- `traefik.frontend.value=test.example.com`: override the default frontend value (Default: `{appName}.{domain}`) See [frontends](#frontends). Must be associated with label traefik.frontend.rule.
|
||
- `traefik.frontend.passHostHeader=true`: forward client `Host` header to the backend.
|
||
* `traefik.domain=traefik.localhost`: override the default domain
|
||
|
||
## <a id="consul"></a> Consul backend
|
||
|
||
Træfɪk can be configured to use Consul as a backend configuration:
|
||
|
||
```toml
|
||
################################################################
|
||
# Consul KV configuration backend
|
||
################################################################
|
||
|
||
# Enable Consul KV configuration backend
|
||
#
|
||
# Optional
|
||
#
|
||
[consul]
|
||
|
||
# Consul server endpoint
|
||
#
|
||
# Required
|
||
#
|
||
endpoint = "127.0.0.1:8500"
|
||
|
||
# Enable watch Consul changes
|
||
#
|
||
# Optional
|
||
#
|
||
watch = true
|
||
|
||
# Prefix used for KV store.
|
||
#
|
||
# Optional
|
||
#
|
||
prefix = "traefik"
|
||
|
||
# Override default configuration template. For advanced users :)
|
||
#
|
||
# Optional
|
||
#
|
||
# filename = "consul.tmpl"
|
||
```
|
||
|
||
The Keys-Values structure should look (using `prefix = "/traefik"`):
|
||
|
||
- backend 1
|
||
|
||
| Key | Value |
|
||
|--------------------------------------------------------|-----------------------------|
|
||
| `/traefik/backends/backend1/circuitbreaker/expression` | `NetworkErrorRatio() > 0.5` |
|
||
| `/traefik/backends/backend1/servers/server1/url` | `http://172.17.0.2:80` |
|
||
| `/traefik/backends/backend1/servers/server1/weight` | `10` |
|
||
| `/traefik/backends/backend1/servers/server2/url` | `http://172.17.0.3:80` |
|
||
| `/traefik/backends/backend1/servers/server2/weight` | `1` |
|
||
|
||
- backend 2
|
||
|
||
| Key | Value |
|
||
|-----------------------------------------------------|------------------------|
|
||
| `/traefik/backends/backend2/loadbalancer/method` | `drr` |
|
||
| `/traefik/backends/backend2/servers/server1/url` | `http://172.17.0.4:80` |
|
||
| `/traefik/backends/backend2/servers/server1/weight` | `1` |
|
||
| `/traefik/backends/backend2/servers/server2/url` | `http://172.17.0.5:80` |
|
||
| `/traefik/backends/backend2/servers/server2/weight` | `2` |
|
||
|
||
- frontend 1
|
||
|
||
| Key | Value |
|
||
|----------------------------------------------------|------------------|
|
||
| `/traefik/frontends/frontend1/backend` | `backend2` |
|
||
| `/traefik/frontends/frontend1/routes/test_1/rule` | `Host` |
|
||
| `/traefik/frontends/frontend1/routes/test_1/value` | `test.localhost` |
|
||
|
||
- frontend 2
|
||
|
||
| Key | Value |
|
||
|----------------------------------------------------|------------|
|
||
| `/traefik/frontends/frontend2/backend` | `backend1` |
|
||
| `/traefik/frontends/frontend2/passHostHeader` | `true` |
|
||
| `/traefik/frontends/frontend2/routes/test_2/rule` | `Path` |
|
||
| `/traefik/frontends/frontend2/routes/test_2/value` | `/test` |
|
||
|
||
|
||
## <a id="etcd"></a> Etcd backend
|
||
|
||
Træfɪk can be configured to use Etcd as a backend configuration:
|
||
|
||
```toml
|
||
################################################################
|
||
# Etcd configuration backend
|
||
################################################################
|
||
|
||
# Enable Etcd configuration backend
|
||
#
|
||
# Optional
|
||
#
|
||
# [etcd]
|
||
|
||
# Etcd server endpoint
|
||
#
|
||
# Required
|
||
#
|
||
# endpoint = "127.0.0.1:4001"
|
||
|
||
# Enable watch Etcd changes
|
||
#
|
||
# Optional
|
||
#
|
||
# watch = true
|
||
|
||
# Prefix used for KV store.
|
||
#
|
||
# Optional
|
||
#
|
||
# prefix = "/traefik"
|
||
|
||
# Override default configuration template. For advanced users :)
|
||
#
|
||
# Optional
|
||
#
|
||
# filename = "etcd.tmpl"
|
||
```
|
||
|
||
The Keys-Values structure should look (using `prefix = "/traefik"`):
|
||
|
||
- backend 1
|
||
|
||
| Key | Value |
|
||
|--------------------------------------------------------|-----------------------------|
|
||
| `/traefik/backends/backend1/circuitbreaker/expression` | `NetworkErrorRatio() > 0.5` |
|
||
| `/traefik/backends/backend1/servers/server1/url` | `http://172.17.0.2:80` |
|
||
| `/traefik/backends/backend1/servers/server1/weight` | `10` |
|
||
| `/traefik/backends/backend1/servers/server2/url` | `http://172.17.0.3:80` |
|
||
| `/traefik/backends/backend1/servers/server2/weight` | `1` |
|
||
|
||
- backend 2
|
||
|
||
| Key | Value |
|
||
|-----------------------------------------------------|------------------------|
|
||
| `/traefik/backends/backend2/loadbalancer/method` | `drr` |
|
||
| `/traefik/backends/backend2/servers/server1/url` | `http://172.17.0.4:80` |
|
||
| `/traefik/backends/backend2/servers/server1/weight` | `1` |
|
||
| `/traefik/backends/backend2/servers/server2/url` | `http://172.17.0.5:80` |
|
||
| `/traefik/backends/backend2/servers/server2/weight` | `2` |
|
||
|
||
- frontend 1
|
||
|
||
| Key | Value |
|
||
|----------------------------------------------------|------------------|
|
||
| `/traefik/frontends/frontend1/backend` | `backend2` |
|
||
| `/traefik/frontends/frontend1/routes/test_1/rule` | `Host` |
|
||
| `/traefik/frontends/frontend1/routes/test_1/value` | `test.localhost` |
|
||
|
||
- frontend 2
|
||
|
||
| Key | Value |
|
||
|----------------------------------------------------|------------|
|
||
| `/traefik/frontends/frontend2/backend` | `backend1` |
|
||
| `/traefik/frontends/frontend2/passHostHeader` | `true` |
|
||
| `/traefik/frontends/frontend2/routes/test_2/rule` | `Path` |
|
||
| `/traefik/frontends/frontend2/routes/test_2/value` | `/test` |
|
||
|
||
|
||
## <a id="zk"></a> Zookeeper backend
|
||
|
||
Træfɪk can be configured to use Zookeeper as a backend configuration:
|
||
|
||
```toml
|
||
################################################################
|
||
# Zookeeper configuration backend
|
||
################################################################
|
||
|
||
# Enable Zookeeperconfiguration backend
|
||
#
|
||
# Optional
|
||
#
|
||
# [zookeeper]
|
||
|
||
# Zookeeper server endpoint
|
||
#
|
||
# Required
|
||
#
|
||
# endpoint = "127.0.0.1:2181"
|
||
|
||
# Enable watch Zookeeper changes
|
||
#
|
||
# Optional
|
||
#
|
||
# watch = true
|
||
|
||
# Prefix used for KV store.
|
||
#
|
||
# Optional
|
||
#
|
||
# prefix = "/traefik"
|
||
|
||
# Override default configuration template. For advanced users :)
|
||
#
|
||
# Optional
|
||
#
|
||
# filename = "zookeeper.tmpl"
|
||
```
|
||
The Keys-Values structure should look (using `prefix = "/traefik"`):
|
||
|
||
- backend 1
|
||
|
||
| Key | Value |
|
||
|--------------------------------------------------------|-----------------------------|
|
||
| `/traefik/backends/backend1/circuitbreaker/expression` | `NetworkErrorRatio() > 0.5` |
|
||
| `/traefik/backends/backend1/servers/server1/url` | `http://172.17.0.2:80` |
|
||
| `/traefik/backends/backend1/servers/server1/weight` | `10` |
|
||
| `/traefik/backends/backend1/servers/server2/url` | `http://172.17.0.3:80` |
|
||
| `/traefik/backends/backend1/servers/server2/weight` | `1` |
|
||
|
||
- backend 2
|
||
|
||
| Key | Value |
|
||
|-----------------------------------------------------|------------------------|
|
||
| `/traefik/backends/backend2/loadbalancer/method` | `drr` |
|
||
| `/traefik/backends/backend2/servers/server1/url` | `http://172.17.0.4:80` |
|
||
| `/traefik/backends/backend2/servers/server1/weight` | `1` |
|
||
| `/traefik/backends/backend2/servers/server2/url` | `http://172.17.0.5:80` |
|
||
| `/traefik/backends/backend2/servers/server2/weight` | `2` |
|
||
|
||
- frontend 1
|
||
|
||
| Key | Value |
|
||
|---------------------------------------------------|------------------|
|
||
| `/traefik/frontends/frontend1/backend | `backend2` |
|
||
| `/traefik/frontends/frontend1/routes/test_1/rule | `Host` |
|
||
| `/traefik/frontends/frontend1/routes/test_1/value | `test.localhost` |
|
||
|
||
- frontend 2
|
||
|
||
| Key | Value |
|
||
|----------------------------------------------------|------------|
|
||
| `/traefik/frontends/frontend2/backend` | `backend1` |
|
||
| `/traefik/frontends/frontend2/passHostHeader` | `true` |
|
||
| `/traefik/frontends/frontend2/routes/test_2/rule` | `Path` |
|
||
| `/traefik/frontends/frontend2/routes/test_2/value` | `/test` |
|
||
|
||
|
||
## <a id="boltdb"></a> BoltDB backend
|
||
|
||
Træfɪk can be configured to use BoltDB as a backend configuration:
|
||
|
||
```toml
|
||
################################################################
|
||
# BoltDB configuration backend
|
||
################################################################
|
||
|
||
# Enable BoltDB configuration backend
|
||
#
|
||
# Optional
|
||
#
|
||
# [boltdb]
|
||
|
||
# BoltDB file
|
||
#
|
||
# Required
|
||
#
|
||
# endpoint = "/my.db"
|
||
|
||
# Enable watch BoltDB changes
|
||
#
|
||
# Optional
|
||
#
|
||
# watch = true
|
||
|
||
# Prefix used for KV store.
|
||
#
|
||
# Optional
|
||
#
|
||
# prefix = "/traefik"
|
||
|
||
# Override default configuration template. For advanced users :)
|
||
#
|
||
# Optional
|
||
#
|
||
# filename = "boltdb.tmpl"
|
||
```
|
||
|
||
|
||
## <a id="benchmarks"></a> Benchmarks
|
||
|
||
Here are some early Benchmarks between Nginx and Træfɪk acting as simple load balancers between two servers.
|
||
|
||
- Nginx:
|
||
|
||
```sh
|
||
$ docker run -d -e VIRTUAL_HOST=test1.localhost emilevauge/whoami
|
||
$ docker run -d -e VIRTUAL_HOST=test1.localhost emilevauge/whoami
|
||
$ docker run --log-driver=none -d -p 80:80 -v /var/run/docker.sock:/tmp/docker.sock:ro jwilder/nginx-proxy
|
||
$ ab -n 20000 -c 20 -r http://test1.localhost/
|
||
This is ApacheBench, Version 2.3 <$Revision: 1528965 $>
|
||
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
|
||
Licensed to The Apache Software Foundation, http://www.apache.org/
|
||
|
||
Benchmarking test1.localhost (be patient)
|
||
Completed 2000 requests
|
||
Completed 4000 requests
|
||
Completed 6000 requests
|
||
Completed 8000 requests
|
||
Completed 10000 requests
|
||
Completed 12000 requests
|
||
Completed 14000 requests
|
||
Completed 16000 requests
|
||
Completed 18000 requests
|
||
Completed 20000 requests
|
||
Finished 20000 requests
|
||
|
||
|
||
Server Software: nginx/1.9.2
|
||
Server Hostname: test1.localhost
|
||
Server Port: 80
|
||
|
||
Document Path: /
|
||
Document Length: 287 bytes
|
||
|
||
Concurrency Level: 20
|
||
Time taken for tests: 5.874 seconds
|
||
Complete requests: 20000
|
||
Failed requests: 0
|
||
Total transferred: 8900000 bytes
|
||
HTML transferred: 5740000 bytes
|
||
Requests per second: 3404.97 [#/sec] (mean)
|
||
Time per request: 5.874 [ms] (mean)
|
||
Time per request: 0.294 [ms] (mean, across all concurrent requests)
|
||
Transfer rate: 1479.70 [Kbytes/sec] received
|
||
|
||
Connection Times (ms)
|
||
min mean[+/-sd] median max
|
||
Connect: 0 0 0.1 0 2
|
||
Processing: 0 6 2.4 6 35
|
||
Waiting: 0 5 2.3 5 33
|
||
Total: 0 6 2.4 6 36
|
||
|
||
Percentage of the requests served within a certain time (ms)
|
||
50% 6
|
||
66% 6
|
||
75% 7
|
||
80% 7
|
||
90% 9
|
||
95% 10
|
||
98% 12
|
||
99% 13
|
||
100% 36 (longest request)
|
||
```
|
||
|
||
- Træfɪk:
|
||
|
||
```sh
|
||
docker run -d -l traefik.backend=test1 -l traefik.frontend.rule=Host -l traefik.frontend.value=test1.docker.localhost emilevauge/whoami
|
||
docker run -d -l traefik.backend=test1 -l traefik.frontend.rule=Host -l traefik.frontend.value=test1.docker.localhost emilevauge/whoami
|
||
docker run -d -p 8080:8080 -p 80:80 -v $PWD/traefik.toml:/traefik.toml -v /var/run/docker.sock:/var/run/docker.sock emilevauge/traefik
|
||
$ ab -n 20000 -c 20 -r http://test1.docker.localhost/
|
||
This is ApacheBench, Version 2.3 <$Revision: 1528965 $>
|
||
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
|
||
Licensed to The Apache Software Foundation, http://www.apache.org/
|
||
|
||
Benchmarking test1.docker.localhost (be patient)
|
||
Completed 2000 requests
|
||
Completed 4000 requests
|
||
Completed 6000 requests
|
||
Completed 8000 requests
|
||
Completed 10000 requests
|
||
Completed 12000 requests
|
||
Completed 14000 requests
|
||
Completed 16000 requests
|
||
Completed 18000 requests
|
||
Completed 20000 requests
|
||
Finished 20000 requests
|
||
|
||
|
||
Server Software: .
|
||
Server Hostname: test1.docker.localhost
|
||
Server Port: 80
|
||
|
||
Document Path: /
|
||
Document Length: 312 bytes
|
||
|
||
Concurrency Level: 20
|
||
Time taken for tests: 6.545 seconds
|
||
Complete requests: 20000
|
||
Failed requests: 0
|
||
Total transferred: 8600000 bytes
|
||
HTML transferred: 6240000 bytes
|
||
Requests per second: 3055.60 [#/sec] (mean)
|
||
Time per request: 6.545 [ms] (mean)
|
||
Time per request: 0.327 [ms] (mean, across all concurrent requests)
|
||
Transfer rate: 1283.11 [Kbytes/sec] received
|
||
|
||
Connection Times (ms)
|
||
min mean[+/-sd] median max
|
||
Connect: 0 0 0.2 0 7
|
||
Processing: 1 6 2.2 6 22
|
||
Waiting: 1 6 2.1 6 21
|
||
Total: 1 7 2.2 6 22
|
||
|
||
Percentage of the requests served within a certain time (ms)
|
||
50% 6
|
||
66% 7
|
||
75% 8
|
||
80% 8
|
||
90% 9
|
||
95% 10
|
||
98% 11
|
||
99% 13
|
||
100% 22 (longest request)
|
||
```
|