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redis 数据的恢复

时间:2015-12-18 11:47:33      阅读:1166      评论:0      收藏:0      [点我收藏+]

1:redis配置dump.db固化方式,不打开aof,不修改iphosts,参数如下:

      

# more IP addresses.
#
# Examples:
#
# bind 192.168.1.100 10.0.0.1
# bind 127.0.0.1

#bind 192.168.16.239

 

# output for logging but daemonize, logs will be sent to /dev/null
logfile "/opt/redis-3.0.2/redis.log"

 

# like in the following example:
#
# save ""

save 900 1
save 300 10
save 60 10000


# The filename where to dump the DB
dbfilename dump.rdb

# The working directory.
#
# The DB will be written inside this directory, with the filename specified
# above using the ‘dbfilename‘ configuration directive.
#
# The Append Only File will also be created inside this directory.
#
# Note that you must specify a directory here, not a file name.
dir /opt/redis-3.0.2/src/

 

其他参数默认

 

2:根据上述参数启动redis,并插入数据。

    /opt/redis-3.0.2/src

    ./redis-server ../redis.conf

    

vim redis-setkey.sh  

#!/bin/bash

n=100000

for (( i=n ;i>=1 ; i-- ))
do
echo $i

redis-cli set liang$i aa

done

    

 

执行脚本,并监控后台日志输出:

5763:M 18 Dec 09:48:30.820 * 1 changes in 900 seconds. Saving...
5763:M 18 Dec 09:48:30.821 * Background saving started by pid 5843
5843:C 18 Dec 09:48:30.887 * DB saved on disk
5843:C 18 Dec 09:48:30.888 * RDB: 4 MB of memory used by copy-on-write
5763:M 18 Dec 09:48:30.921 * Background saving terminated with success
5763:M 18 Dec 09:49:31.011 * 10000 changes in 60 seconds. Saving...
5763:M 18 Dec 09:49:31.012 * Background saving started by pid 27088
27088:C 18 Dec 09:49:31.086 * DB saved on disk
27088:C 18 Dec 09:49:31.086 * RDB: 6 MB of memory used by copy-on-write
5763:M 18 Dec 09:49:31.112 * Background saving terminated with success
5763:M 18 Dec 09:50:32.064 * 10000 changes in 60 seconds. Saving...
5763:M 18 Dec 09:50:32.066 * Background saving started by pid 15041
15041:C 18 Dec 09:50:32.163 * DB saved on disk
15041:C 18 Dec 09:50:32.163 * RDB: 6 MB of memory used by copy-on-write
5763:M 18 Dec 09:50:32.167 * Background saving terminated with success
5763:M 18 Dec 09:51:33.048 * 10000 changes in 60 seconds. Saving...
5763:M 18 Dec 09:51:33.050 * Background saving started by pid 2308
2308:C 18 Dec 09:51:33.162 * DB saved on disk
2308:C 18 Dec 09:51:33.162 * RDB: 8 MB of memory used by copy-on-write
5763:M 18 Dec 09:51:33.250 * Background saving terminated with success
5763:M 18 Dec 09:52:34.062 * 10000 changes in 60 seconds. Saving...
5763:M 18 Dec 09:52:34.064 * Background saving started by pid 22023
22023:C 18 Dec 09:52:34.216 * DB saved on disk
22023:C 18 Dec 09:52:34.216 * RDB: 8 MB of memory used by copy-on-write
5763:M 18 Dec 09:52:34.264 * Background saving terminated with success
5763:M 18 Dec 09:53:35.089 * 10000 changes in 60 seconds. Saving...
5763:M 18 Dec 09:53:35.090 * Background saving started by pid 8713
8713:C 18 Dec 09:53:35.237 * DB saved on disk
8713:C 18 Dec 09:53:35.237 * RDB: 4 MB of memory used by copy-on-write
5763:M 18 Dec 09:53:35.291 * Background saving terminated with success

 

客户端查看数据:

[root@shell src]# redis-cli 

127.0.0.1:6379> get liang1
"aa"
127.0.0.1:6379> get liang2
"aa"
127.0.0.1:6379> get liang10000
"aa"
127.0.0.1:6379> get liang100000
"aa"

 

1)关闭服务端,不修改配置,并重启服务,查看是否做了持久化,查询数据:

5763:M 18 Dec 09:58:52.911 # User requested shutdown...
5763:M 18 Dec 09:58:52.911 * Saving the final RDB snapshot before exiting.
5763:M 18 Dec 09:58:53.050 * DB saved on disk
5763:M 18 Dec 09:58:53.050 * Removing the pid file.
5763:M 18 Dec 09:58:53.050 # Redis is now ready to exit, bye bye...
8732:M 18 Dec 09:59:20.619 * Increased maximum number of open files to 10032 (it was originally set to 1024).
_._
_.-``__ ‘‘-._
_.-`` `. `_. ‘‘-._ Redis 3.0.2 (00000000/0) 64 bit
.-`` .-```. ```\/ _.,_ ‘‘-._
( ‘ , .-` | `, ) Running in standalone mode
|`-._`-...-` __...-.``-._|‘` _.-‘| Port: 6379
| `-._ `._ / _.-‘ | PID: 8732
`-._ `-._ `-./ _.-‘ _.-‘
|`-._`-._ `-.__.-‘ _.-‘_.-‘|
| `-._`-._ _.-‘_.-‘ | http://redis.io
`-._ `-._`-.__.-‘_.-‘ _.-‘
|`-._`-._ `-.__.-‘ _.-‘_.-‘|
| `-._`-._ _.-‘_.-‘ |
`-._ `-._`-.__.-‘_.-‘ _.-‘
`-._ `-.__.-‘ _.-‘
`-._ _.-‘
`-.__.-‘

8732:M 18 Dec 09:59:20.621 # Server started, Redis version 3.0.2
8732:M 18 Dec 09:59:20.730 * DB loaded from disk: 0.109 seconds
8732:M 18 Dec 09:59:20.730 * The server is now ready to accept connections on port 6379

 

[root@shell src]# redis-cli
127.0.0.1:6379> get liang1
"aa"
127.0.0.1:6379> get liang100000
"aa"

 

2)关闭服务,修改配置:

  1:只修改dump.rdb参数路径,直接使用绝对路径:

    

# Note that you must specify a directory here, not a file name.
dir /opt/redis-3.0.2/src/

  

[root@shell src]# redis-cli
127.0.0.1:6379> get liang1
"aa"
127.0.0.1:6379> get liang100000
"aa"

发现数据存在。

  2:修改dump.rdb参数路径,直接使用绝对路径,并修改HOSTSIP地址:

    bind 192.168.16.239

    dir /opt/redis-3.0.2/src/

 

    

[root@shell src]# ps aux|grep redis
root 5767 0.0 0.0 100928 616 pts/0 S+ 09:32 0:00 tail -fn 200 redis.log
root 8797 0.5 1.1 145620 17676 ? Ssl 10:08 0:00 ./redis-server 192.168.16.239:6379

 

8797:M 18 Dec 10:08:15.737 * Increased maximum number of open files to 10032 (it was originally set to 1024).
_._
_.-``__ ‘‘-._
_.-`` `. `_. ‘‘-._ Redis 3.0.2 (00000000/0) 64 bit
.-`` .-```. ```\/ _.,_ ‘‘-._
( ‘ , .-` | `, ) Running in standalone mode
|`-._`-...-` __...-.``-._|‘` _.-‘| Port: 6379
| `-._ `._ / _.-‘ | PID: 8797
`-._ `-._ `-./ _.-‘ _.-‘
|`-._`-._ `-.__.-‘ _.-‘_.-‘|
| `-._`-._ _.-‘_.-‘ | http://redis.io
`-._ `-._`-.__.-‘_.-‘ _.-‘
|`-._`-._ `-.__.-‘ _.-‘_.-‘|
| `-._`-._ _.-‘_.-‘ |
`-._ `-._`-.__.-‘_.-‘ _.-‘
`-._ `-.__.-‘ _.-‘
`-._ _.-‘
`-.__.-‘

8797:M 18 Dec 10:08:15.739 # Server started, Redis version 3.0.2
8797:M 18 Dec 10:08:15.848 * DB loaded from disk: 0.109 seconds
8797:M 18 Dec 10:08:15.848 * The server is now ready to accept connections on port 6379

 

[root@shell src]# redis-cli -h 192.168.16.239
192.168.16.239:6379> get liang1
"aa"
192.168.16.239:6379> get liang10000
"aa"

 

持久化正常,实例恢复正常,根据上述测试也可以证明,将dump.rdb文件拷贝到其他机器,将配置指向此文件路径,也可以恢复实例。

 

 

2:在默认配置情况下,测试在不同路径下产生的dump.rdb的路径是否不同:

  

redis 数据的恢复

原文:http://www.cnblogs.com/liangsky/p/5056583.html

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