MongoDB备份的相关

0　　备份所有数据库  mongodump -o /root/dump1     -o 指定备份文件存在的路径

[root@localhost bin]# mongodump -o /root/dump1
2019-07-26T16:37:48.830+0800    writing admin.system.version to 
2019-07-26T16:37:48.831+0800    done dumping admin.system.version (1 document)
2019-07-26T16:37:48.831+0800    writing admin.test to 
2019-07-26T16:37:48.831+0800    writing admin.testback to 
2019-07-26T16:37:48.832+0800    writing testcopy.order to 
2019-07-26T16:37:48.832+0800    writing testcopy.songbin to 
2019-07-26T16:37:48.834+0800    done dumping testcopy.songbin (1 document)
2019-07-26T16:37:48.847+0800    done dumping admin.testback (8 documents)
2019-07-26T16:37:48.847+0800    done dumping testcopy.order (1 document)
2019-07-26T16:37:48.890+0800    done dumping admin.test (10006 documents)

1　　单一数据库的备份,  -d 参数可以更明智的选择要备份的数据库  

 　　备份的数据默认在bin目录下的dump目录中(dump最初不存在 执行备份的时候自动创建)

[root@localhost bin]# mongodump -d testcopy
2019-07-26T16:14:08.636+0800    writing testcopy.songbin to 
2019-07-26T16:14:08.639+0800    done dumping testcopy.songbin (1 document)

2　　集合级别的备份  由于备份的需求是不同的,有的集合需要每周备份一次 有的集合需要每小时备份一次，

　　 mongodump -d testcopy -c order     -c 参数让用户可以单独实现特定集合的备份 

[root@localhost bin]# mongodump -d testcopy -c order
2019-07-26T16:26:33.296+0800    writing testcopy.order to 
2019-07-26T16:26:33.298+0800    done dumping testcopy.order (1 document)

 　　mongodump -d testcopy -c order -o /root/dump       -o 指定备份文件存在的路径

[root@localhost bin]# mongodump -d testcopy -c order -o /root/dump
2019-07-26T16:32:40.058+0800    writing testcopy.order to 
2019-07-26T16:32:40.059+0800    done dumping testcopy.order (1 document)

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