背景介绍:
目前我们线上的前端服务器数量比较多,超过200多台,每次发布新应用的时候,都是将软件包放在一台专门的Push服务器上,再由所有的前端服务器通过rsync自动同步。但随着前端服务器的数量越来越多,Push服务器的带宽已经成为了瓶颈。
而BitTorrent Sync这种P2P方式的同步则是一种解决方案。同时它的跨平台支持也非常好,无论是Windows,Linux,Mac OS,甚至手机端都有相应的客户端。虽然目前尚未开源,但可以免费使用,还是很不错的。
下面,就是我们在线上的纯Linux测试环境中的安装与配置步骤:
Servers:
sc2-xdbc1,sc2-xdbc2,sc2-xdbc3
1. 下载BitTorrent Sync,在所有服务器上:
$ sudo wget http://download-lb.utorrent.com/endpoint/btsync/os/linux-glibc23-x64/track/stable -O /tmp/btsync_glibc23_64.tar.gz
$ sudo mkdir /opt/btsync
$ cd /opt/btsync
$ sudo tar xzf /tmp/btsync_glibc23_64.tar.gz
2. 创建服务管理脚本,在所有服务器上:
$ sudo vim /etc/init.d/btsync
#!/bin/sh # # description: starts and stops the btsync client CONF=/opt/btsync/btsync.cfg PROC=/opt/btsync/btsync PIDFILE=/opt/btsync/btsync.pid start() { PID1=$(pidof btsync) if [ -z ${PID1} ]; then echo -n "Starting BitTorrent Sync: " ${PROC} --config ${CONF} else echo "BitTorrent Sync is already running at pid:${PID1}" fi return $? } stop() { echo -n "Stopping BitTorrent Sync: " PID1=$(pidof btsync) if [ ! -z ${PID1} ]; then kill -9 ${PID1} echo "OK" else echo "Failed" fi return $? } status() { PID1=$(pidof btsync) PID2=$(cat ${PIDFILE}) echo -n "Checking BitTorrent Sync: " if [ ! -z ${PID1} ] && [ "${PID1}" -eq "${PID2}" ]; then echo "OK" else echo "Failed" fi return $? } case "$1" in start) start ;; stop) stop ;; restart) stop sleep 1 start ;; status) status ;; *) echo $"Usage: $0 {start|stop|restart|status}" exit 2 esac
$ sudo chmod +x /etc/init.d/btsync
3. 创建用于同步的目录,在所有服务器上:
$ sudo mkdir /opt/btsync_transfer
4. 创建配置文件,在sc2-xdbc1上:
[adsymp@sc2-xdbc1 btsync]$ sudo vim /opt/btsync/btsync.cfg
{ "device_name": "sc2-xdbc3", "listening_port" : 0, // 0 - randomize port "storage_path" : "/opt/btsync", "pid_file" : "/opt/btsync/btsync.pid", "download_limit" : 0, // 0 - no limit "upload_limit" : 0, "webui" : { "listen" : "0.0.0.0:8888", "login" : "admin", "password" : "btsync" } , "folder_rescan_interval" : 60, "lan_encrypt_data" : false, "lan_use_tcp" : true }
5. 创建同步所需的密钥,在sc2-xdbc1上:
$ sudo /etc/init.d/btsync start
打开Web UI:http://sc2-xdbc1:8888
用户名: admin
密码: btsync
点击 “Add Folder”,
在 “Path” 中输入 “/opt/btsync_transfer”
点击 “Generate” 得到 “Secret” 为 “ALUORWDEWOLV354ZHPHFT4TSQO67JWQAN”
如下图所示:
6. 创建配置文件,在sc2-xdbc2和sc2-xdbc3上:
[adsymp@sc2-xdbc2 btsync]$ sudo vim btsync.cfg
{ "device_name": "sc2-xdbc2", "listening_port" : 0, // 0 - randomize port "storage_path" : "/opt/btsync", "pid_file" : "/opt/btsync/btsync.pid", "download_limit" : 0, // 0 - no limit "upload_limit" : 0, "webui" : { "listen" : "0.0.0.0:8888", "login" : "admin", "password" : "btsync" } , "shared_folders" : [ { "secret" : "ALUORWDEWOLV354ZHPHFT4TSQO67JWQAN", // * required field "dir" : "/opt/btsync_transfer" // * required field } ] , "folder_rescan_interval" : 60, "lan_encrypt_data" : false, "lan_use_tcp" : true }
[adsymp@sc2-xdbc2 btsync]$ sudo /etc/init.d/btsync start
[adsymp@sc2-xdbc3 btsync]$ sudo vim btsync.cfg
{ "device_name": "sc2-xdbc3", "listening_port" : 0, // 0 - randomize port "storage_path" : "/opt/btsync", "pid_file" : "/opt/btsync/btsync.pid", "download_limit" : 0, // 0 - no limit "upload_limit" : 0, "webui" : { "listen" : "0.0.0.0:8888", "login" : "admin", "password" : "btsync" } , "shared_folders" : [ { "secret" : "ALUORWDEWOLV354ZHPHFT4TSQO67JWQAN", // * required field "dir" : "/opt/btsync_transfer" // * required field } ] , "folder_rescan_interval" : 60, "lan_encrypt_data" : false, // Encryption is very painful in terms of speed. Disabling it for LAN to increase the speed. "lan_use_tcp" : true }
[adsymp@sc2-xdbc3 btsync]$ sudo /etc/init.d/btsync start
7. 在/opt/btsync_transfer中放置一些文件,就可以查看同步的状态了。
打开Web UI:http://sc2-xdbc1:8888
如下图所示:
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