Fabio 安裝和簡單使用
Fabio 是一個快速、現代、zero-conf 負載均衡 HTTP(S) 路由器，用於部署 Consul 管理的微服務。mysql
Fabio 由 eBay Classifieds Group 開發，用於處理 marktplaats.nl 和 kijiji.it 的流量。Marktplaats 全部的流量都通過 Fabio ，每秒有 250000 個請求，分發於數個 Fabio 實例，而且沒有出現任何延遲。linux
簡單流程圖（摘自 http://dockone.io/article/1567）：ios
====== 服務註冊 ========= ========= A服務 <------> consul集羣 ----> 健康的 A/不健康的 A 集羣 ====== 健康檢查 ========= ========= ^ | 加入/移出路由表 | ======== fabio 集羣 ======== | | A服務 若是找到則成功路由不然返回錯誤 V http 請求
Mac OS 安裝命令（若是沒有安裝 Consul，會自動安裝）：c++
$ brew install fabio Updating Homebrew... ==> Auto-updated Homebrew! Updated 1 tap (homebrew/core). ==> New Formulae crystal-icr gcc@4.7 gnome-autoar libchaos llvm@3.8 pdftoipe tomcat@8.0 dbt gcc@5 isl@0.12 libswiftnav mps-youtube recipes ucg gcc@4.6 gcc@6 lasso llvm@3.7 ndenv servus ==> Updated Formulae afflib dnscrypt-proxy handbrake mpv sassc ant doxygen hebcal mysql sbcl antigen duply highlight mysql-connector-c++ sqldiff antlr flex hugo mysql-sandbox sqlite apache-spark fluent-bit p_w_picpathmagick nagios sqlite-analyzer arangodb fobis ipv6calc nagios-plugins stunnel astyle fontforge jasper ncdc syncthing ats2-postiats fpp jenkins ncftp tarantool aws-sdk-cpp freetype lean-cli neo4j taylor awscli ganglia leptonica nvm tile38 bup gcc libass ooniprobe vim cdiff gcc@4.9 libgit2 opentsdb volatility cfr-decompiler geos libgit2-glib osm2pgsql vowpal-wabbit checkstyle git-annex libpng osquery weechat cloog git-lfs libxml2 pngpaste wine compcert gitg lmdb poco winetricks couchdb gitless m-cli pure-ftpd wireguard-tools cppcheck gmic macos*** qt5 x265 czmq gnome-builder menhir questdb yaz dbhash gnutls mg rclone youtube-dl dmd groonga mitmproxy re2 ==> Deleted Formulae cloog@0.18 qt tutum Error: Could not link: /usr/local/share/man/man1/brew.1 Please delete these paths and run `brew update`. ==> Installing dependencies for fabio: consul ==> Installing fabio dependency: consul ==> Downloading https://homebrew.bintray.com/bottles/consul-0.7.2.sierra.bottle.tar.gz ######################################################################## 100.0% ==> Pouring consul-0.7.2.sierra.bottle.tar.gz Error: The `brew link` step did not complete successfully The formula built, but is not symlinked into /usr/local Could not symlink bin/consul Target /usr/local/bin/consul already exists. You may want to remove it: rm '/usr/local/bin/consul' To force the link and overwrite all conflicting files: brew link --overwrite consul To list all files that would be deleted: brew link --overwrite --dry-run consul Possible conflicting files are: /usr/local/bin/consul ==> Caveats If consul was built with --with-web-ui, you can activate the UI by running consul with `-ui-dir /usr/local/Cellar/consul/0.7.2/share/consul/web-ui`. zsh completion has been installed to: /usr/local/share/zsh/site-functions To have launchd start consul now and restart at login: brew services start consul Or, if you don't want/need a background service you can just run: consul agent -dev -advertise 127.0.0.1 ==> Summary /usr/local/Cellar/consul/0.7.2: 5 files, 27.6M ==> Installing fabio ==> Downloading https://homebrew.bintray.com/bottles/fabio-1.3.5.sierra.bottle.tar.gz ######################################################################## 100.0% ==> Pouring fabio-1.3.5.sierra.bottle.tar.gz /usr/local/Cellar/fabio/1.3.5: 6 files, 10.1M
Ubuntu 安裝比較麻煩點，具體步驟：git
1. 建立fabio目錄：github
$ mkdir /opt/fabio
2. 設置環境變量：web
$ export PATH=$PATH:/opt/fabio
3. 建立fabio.properties文件（/opt/fabio工做目錄下）：sql
$ touch fabio.properties
4. 下載 Fabio 文件（地址：https://github.com/eBay/fabio/releases）：macos
$ wget https://github.com/eBay/fabio/releases/download/v1.3.5/fabio-1.3.5-go1.7.3-linux_amd64
5. 賦予權限：apache
$ chmod a+x fabio-1.3.5-go1.7.3-linux_amd64
6. 設置fabio命令：
$ ln -s fabio-1.3.5-go1.7.3-linux_amd64 fabio
安裝好以後，直接輸入命令（啓動 Fabio）：
$ fabio
2017/01/04 03:04:44 [INFO] Runtime config
{
"Proxy": {
"Strategy": "rnd",
"Matcher": "prefix",
"NoRouteStatus": 404,
"MaxConn": 10000,
"ShutdownWait": 0,
"DialTimeout": 30000000000,
"ResponseHeaderTimeout": 0,
"KeepAliveTimeout": 0,
"ReadTimeout": 0,
"WriteTimeout": 0,
"FlushInterval": 1000000000,
"LocalIP": "10.0.2.15",
"ClientIPHeader": "",
"TLSHeader": "",
"TLSHeaderValue": "",
"GZIPContentTypesValue": "",
"GZIPContentTypes": null
},
"Registry": {
"Backend": "consul",
"Static": {
"Routes": ""
},
"File": {
"Path": ""
},
"Consul": {
"Addr": "localhost:8500",
"Scheme": "http",
"Token": "",
"KVPath": "/fabio/config",
"TagPrefix": "urlprefix-",
"Register": true,
"ServiceAddr": ":9998",
"ServiceName": "fabio",
"ServiceTags": null,
"ServiceStatus": [
"passing"
],
"CheckInterval": 1000000000,
"CheckTimeout": 3000000000
}
},
"Listen": [
{
"Addr": ":9999",
"Proto": "http",
"ReadTimeout": 0,
"WriteTimeout": 0,
"CertSource": {
"Name": "",
"Type": "",
"CertPath": "",
"KeyPath": "",
"ClientCAPath": "",
"CAUpgradeCN": "",
"Refresh": 0,
"Header": null
},
"StrictMatch": false
}
],
"CertSources": {},
"Metrics": {
"Target": "",
"Prefix": "{{clean .Hostname}}.{{clean .Exec}}",
"Names": "{{clean .Service}}.{{clean .Host}}.{{clean .Path}}.{{clean .TargetURL.Host}}",
"Interval": 30000000000,
"GraphiteAddr": "",
"StatsDAddr": "",
"CirconusAPIKey": "",
"CirconusAPIApp": "fabio",
"CirconusAPIURL": "",
"CirconusCheckID": "",
"CirconusBrokerID": ""
},
"UI": {
"Addr": ":9998",
"Color": "light-green",
"Title": ""
},
"Runtime": {
"GOGC": 800,
"GOMAXPROCS": 1
},
"ListenerValue": [
":9999"
],
"CertSourcesValue": null
}
2017/01/04 03:04:44 [INFO] Version 1.3.5 starting
2017/01/04 03:04:44 [INFO] Go runtime is go1.7.3
2017/01/04 03:04:44 [INFO] Using routing strategy "rnd"
2017/01/04 03:04:44 [INFO] Using routing matching "prefix"
2017/01/04 03:04:44 [INFO] Setting GOGC=800
2017/01/04 03:04:44 [INFO] Setting GOMAXPROCS=1
2017/01/04 03:04:44 [INFO] Metrics disabled
2017/01/04 03:04:44 [INFO] consul: Connecting to "localhost:8500" in datacenter "dc1"
2017/01/04 03:04:44 [INFO] Admin server listening on ":9998"
2017/01/04 03:04:44 [INFO] HTTP proxy listening on :9999
2017/01/04 03:04:44 [INFO] consul: Using dynamic routes
2017/01/04 03:04:44 [INFO] consul: Using tag prefix "urlprefix-"
2017/01/04 03:04:44 [INFO] consul: Watching KV path "/fabio/config"
2017/01/04 03:04:44 [INFO] agent: Synced service 'fabio-vagrant-ubuntu-trusty-9998'
2017/01/04 03:04:44 [INFO] consul: Registered fabio with id "fabio-vagrant-ubuntu-trusty-9998"
2017/01/04 03:04:44 [INFO] consul: Registered fabio with address "10.0.2.15"
2017/01/04 03:04:44 [INFO] consul: Registered fabio with tags ""
2017/01/04 03:04:44 [INFO] consul: Registered fabio with health check to "http://[10.0.2.15]:9998/health"
2017/01/04 03:04:44 [INFO] consul: Health changed to #5878
2017/01/04 03:04:44 [INFO] consul: Manual config changed to #1
2017/01/04 03:04:44 [INFO] Updated config to
2017/01/04 03:04:44 [INFO] consul: Health changed to #5879
2017/01/04 03:04:44 [INFO] agent: Synced check 'service:fabio-vagrant-ubuntu-trusty-9998'
Fabio 啓動會鏈接本地的 Consul 服務，Fabio 經常使用地址（示例）：
http://10.9.10.173:9998/health：服務能夠請求到這個地址，用於服務的健康檢查（Fabio 統一健康檢查）。
http://10.9.10.173:9999/{servicename}：服務的負載均衡地址，全部的服務調用都會請求到這個 Origin，Fabio 會進行服務分發。
http://10.9.10.173:9998：Fabio 後臺 UI 界面，能夠看到服務地址和權重，也能夠增長路由規則。
服務註冊的時候，須要以 Fabio 的方式進行註冊（SDK 進行實現）。
服務的路由須要添加{servicename}（Fabio 識別具體的服務），好比：
[Route("server-test/values")]
public class ValuesController : Controller
{
public string Get()
{
return "hello world";
}
}
服務調用的時候，請求地址也須要添加{servicename}（Fabio 識別具體的服務），好比：
var service = await _serviceRegistry.GetServiceInstanceAsync("server-test");
var serverUrl = $"{service.Address}:{service.Port}";
if (!serverUrl.StartsWith("http://", StringComparison.OrdinalIgnoreCase))
serverUrl = "http://" + serverUrl;
var url = $"{serverUrl}/server-test/values";
var httpClient = new HttpClient();
var response = await httpClient.GetAsync(url);
也能夠直接在瀏覽器中輸入服務負載均衡地址（測試 Fabio 是否正常），好比：
http://10.9.10.173:9999/server-test/values 200 hello world
Fabio 後臺 UI 界面，示例（http://10.9.10.173:9998/routes?filter=）：
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