Redis开发与运维：数据迁移(下)

上一篇，有朋友留言redis-port，借此机会我尝试使用一下redis-port这个同步工具

redis-port 已编译版

    https://github.com/CodisLabs/redis-port/releases

     cd 到解压目录

redis-dump

定义：持久化数据

执行：$ ./redis-dump 127.0.0.1:6999 -o dd/dump.rdb

验证

$ ls -ls
总用量 4
4 -rw-r--r-- 1 sunchong sunchong 217 10月 21 17:36 dump.rdb

redis-decode

    定义：dumped payload to human readable format (hex-encoding)【反序列化rdb，更加容易理解】

    Help：$ ./redis-decode --help

Usage:
    redis-decode [--ncpu=N] [--input=INPUT|INPUT] [--output=OUTPUT]
    redis-decode  --version

Options:
    -n N, --ncpu=N                    Set runtime.GOMAXPROCS to N.
    -i INPUT, --input=INPUT           Set input rdb encoded file.  [default: /dev/stdin].
    -o OUTPUT, --output=OUTPUT        Set output file. [default: /dev/stdout].

Examples:
    $ redis-decode -i dump.rdb -o dump.log
    $ redis-decode    dump.rdb -o dump.log
    $ cat dump.rdb | redis-decode --ncpu=8 > dump.log

    执行：$ ./redis-decode -i dump.rdb -o stdout

2019/10/21 15:42:40 decode.go:59: [INFO] decode: input = "dump.rdb", output = "stdout"
2019/10/21 15:42:40 decode.go:110: [INFO] decode: (r,w,o) = (read,write,objects)
2019/10/21 15:42:40 decode.go:135: [INFO] decode: file = 134 - [100.00%]   (r,w,o)=(134,114,2)   ~  (134,114,-)
2019/10/21 15:42:40 decode.go:139: [INFO] decode: done

    验证：$ vim stdout 

    {"db":0,"type":"list","key":"right","index":0,"value":"r1"}
    {"db":0,"type":"string","key":"QBT","value":"value1"}

redis-restore

    从 6999 db0 dump.rdb 持久化到 7999 db0
    from 127.0.0.1:6999   to 127.0.0.1:7999

    执行：$ ./redis-restore -i dump.rdb -t 127.0.0.1:7999

2019/10/21 17:05:39 restore.go:70: [INFO] restore: input = "dump.rdb", aoflog = "" target = "127.0.0.1:7999"
2019/10/21 17:05:39 restore.go:126: [INFO] restore: (r,f,s/a,f,s) = (rdb,rdb.forward,rdb.skip/aof,rdb.forward,rdb.skip)
2019/10/21 17:05:39 restore.go:155: [INFO] restore: size = 134 - [100.00%,  0.00%]   (r,f,s/a,f,s)=(134,0,2/0,0,0)   ~  (134,-,-/0,-,-)
2019/10/21 17:05:39 restore.go:159: [INFO] restore: done

    验证：$ ./redis-restore -i dump.rdb -t 127.0.0.1:7999

127.0.0.1:7999> KEYS *
1) "right"
2) "QBT"

redis-sync

    定义：实例间实时同步

    执行：$ ./redis-sync 127.0.0.1:6999 -t 127.0.0.1:7999

    验证：

2019/10/21 17:41:16 sync.go:76: [INFO] sync: master = "127.0.0.1:6999", target = "127.0.0.1:7999"
2019/10/21 17:41:16 sync.go:109: [INFO] sync: runid = "42d23b2a5d2a4fcce612854174bfc6db89d52cca", offset = 0
2019/10/21 17:41:16 sync.go:111: [INFO] sync: rdb file = 217 (217)
2019/10/21 17:41:16 sync.go:208: [INFO] sync: (r/f,s/f,s) = (read,rdb.forward,rdb.skip/rdb.forward,rdb.skip)
2019/10/21 17:41:17 sync.go:250: [INFO] sync: rdb = 217 - [100.00%]   (r/f,s/f,s)=(217/2,0/0,0)     ~  (217/-,-/-,-)     ~  speed=(217/2,0/0,0)
2019/10/21 17:41:18 sync.go:250: [INFO] sync: rdb = 217 - [100.00%]   (r/f,s/f,s)=(217/2,0/0,0)     ~  (217/-,-/-,-)     ~  speed=(0/0,0/0,0)
2019/10/21 17:41:19 sync.go:250: [INFO] sync: rdb = 217 - [100.00%]   (r/f,s/f,s)=(217/2,0/0,0)     ~  (217/-,-/-,-)     ~  speed=(0/0,0/0,0)
2019/10/21 17:41:20 sync.go:250: [INFO] sync: rdb = 217 - [100.00%]   (r/f,s/f,s)=(231/2,0/1,0)     ~  (231/-,-/-,-)     ~  speed=(14/0,0/1,0)
2019/10/21 17:41:21 sync.go:250: [INFO] sync: rdb = 217 - [100.00%]   (r/f,s/f,s)=(231/2,0/1,0)     ~  (231/-,-/-,-)     ~  speed=(0/0,0/0,0)
2019/10/21 17:41:22 sync.go:250: [INFO] sync: rdb = 217 - [100.00%]   (r/f,s/f,s)=(231/2,0/1,0)     ~  (231/-,-/-,-)     ~  speed=(0/0,0/0,0)
2019/10/21 17:41:23 sync.go:250: [INFO] sync: rdb = 217 - [100.00%]   (r/f,s/f,s)=(231/2,0/1,0)     ~  (231/-,-/-,-)     ~  speed=(0/0,0/0,0)
2019/10/21 17:41:24 sync.go:250: [INFO] sync: rdb = 217 - [100.00%]   (r/f,s/f,s)=(231/2,0/1,0)     ~  (231/-,-/-,-)     ~  speed=(0/0,0/0,0)
2019/10/21 17:41:25 sync.go:250: [INFO] sync: rdb = 217 - [100.00%]   (r/f,s/f,s)=(231/2,0/1,0)     ~  (231/-,-/-,-)     ~  speed=(0/0,0/0,0)
2019/10/21 17:41:26 sync.go:250: [INFO] sync: rdb = 217 - [100.00%]   (r/f,s/f,s)=(231/2,0/1,0)     ~  (231/-,-/-,-)     ~  speed=(0/0,0/0,0)
2019/10/21 17:41:27 sync.go:250: [INFO] sync: rdb = 217 - [100.00%]   (r/f,s/f,s)=(231/2,0/1,0)     ~  (231/-,-/-,-)     ~  speed=(0/0,0/0,0)
2019/10/21 17:41:28 sync.go:250: [INFO] sync: rdb = 217 - [100.00%]   (r/f,s/f,s)=(231/2,0/1,0)     ~  (231/-,-/-,-)     ~  speed=(0/0,0/0,0)
2019/10/21 17:41:29 sync.go:250: [INFO] sync: rdb = 217 - [100.00%]   (r/f,s/f,s)=(231/2,0/1,0)     ~  (231/-,-/-,-)     ~  speed=(0/0,0/0,0)
2019/10/21 17:41:30 sync.go:250: [INFO] sync: rdb = 217 - [100.00%]   (r/f,s/f,s)=(245/2,0/2,0)     ~  (245/-,-/-,-)     ~  speed=(14/0,0/1,0)
2019/10/21 17:41:31 sync.go:250: [INFO] sync: rdb = 217 - [100.00%]   (r/f,s/f,s)=(245/2,0/2,0)     ~  (245/-,-/-,-)     ~  speed=(0/0,0/0,0) 

    源：127.0.0.1:6999

127.0.0.1:6999> SET sc sc1
OK
127.0.0.1:6999> SET sc sc2
OK
127.0.0.1:6999> SET sc sc3
OK
127.0.0.1:6999> SET sc sc4
OK
127.0.0.1:6999> SET sc sc5
OK
127.0.0.1:6999>

    目标：127.0.0.1:7999

127.0.0.1:7999> get sc
"sc5"
127.0.0.1:7999>