透過rsync+ssh deploy nodejs到遠端server，以及MongoDB的備份與還原
Oct 26, 2012為什麼要用rsync+ssh？
因為他最快，可以一鍵搞定，又可以在command line底下做
為什麼要把那麼多東西擠在同一篇？
因為一次的部署(deploy)就是做這些事情，拆開就還要跑兩篇文章去查看，雖然多了點，但還是這樣比較方便。server端只要有sshd在跑即可，沒記錯的話apt-get install ssh-server就好client的話我假設你有bash，用windows的就抱歉了，不然你也可以去抓win-bash，還要有ssh-client。
先來無斷轉載MongoDB Backup and Restore
mongodb的備份與還原 mongodb提供了兩個命令來備份（mongodump ）和還原（mongorestore ）資料庫
1.备份（mongodump ）
用法 ： root@web3 3# mongodump –help options: –help produce help message -v –verbose be more verbose (include multiple times for more verbosity e.g. -vvvvv) -h –host arg mongo host to connect to (“left,right” for pairs) -d –db arg database to use -c –collection arg collection to use (some commands) -u –username arg username -p –password arg password –dbpath arg directly access mongod data files in the given path, instead of connecting to a mongod instance - needs to lock the data directory, so cannot be used if a mongod is currently accessing the same path –directoryperdb if dbpath specified, each db is in a separate directory -o –out arg (=dump) output directory
例子：
root@web3 ~# mongodump -h 192.168.1.103 -d citys -o /backup/mongobak/3
connected to: 192.168.1.103
DATABASE: citys to /backup/mongobak/3/citys
citys.building to /backup/mongobak/3/citys/building.bson
13650 objects
citys.system.indexes to /backup/mongobak/3/citys/system.indexes.bson
1 objects
备份出来的数据是二进制的，已经经过压缩。比实际数据库要小很多，我的数据库显示占用了260多M，备份后只有2M。
2.恢复（mongorestore ）
用法： root@web3 3# mongorestore –help usage: mongorestore options directory or filename to restore from options: –help produce help message -v –verbose be more verbose (include multiple times for more verbosity e.g. -vvvvv) -h –host arg mongo host to connect to (“left,right” for pairs) -d –db arg database to use -c –collection arg collection to use (some commands) -u –username arg username -p –password arg password –dbpath arg directly access mongod data files in the given path, instead of connecting to a mongod instance - needs to lock the data directory, so cannot be used if a mongod is currently accessing the same path –directoryperdb if dbpath specified, each db is in a separate directory –drop drop each collection before import –objcheck validate object before inserting
–drop参数可以在导入之前把collection先删掉。
例子：
root@web3 3# mongorestore -h 127.0.0.1 –directoryperdb /backup/mongobak/3/ connected to: 127.0.0.1 /backup/mongobak/3/citys/building.bson going into namespace citys.building 13667 objects /backup/mongobak/3/citys/system.indexes.bson going into namespace citys.system.indexes 1 objects
另外mongodb还提供了mongoexport 和 mongoimport 这两个命令来导出或导入数据，导出的数据是json格式的。也可以实现备份和恢复的功能。 例： mongoexport -d mixi_top_city_prod -c building_45 -q ‘{ “uid” : “10832545” }’ > mongo_10832545.bson mongoimport -d mixi_top_city -c building_45 –file mongo_10832545.bson