redis-cluster数据迁移

环境说明：

数据源：192.168.1.220
redis类型：redis-cluster

目的地：192.168.1.247
edis类型：redis-cluster

安装redis-migrate-tool

1、软件下载

wget https://github.com/vipshop/redis-migrate-tool/archive/master.zip

2、安装依赖包

yum install -y autoconf automake libtool bzip2 

3、编译安装redis-migrate-tool

unzip redis-migrate-tool-master.zip 
cd redis-migrate-tool-master
autoreconf -fvi
./configure
make

迁移redis数据

1、编辑同步配置文件

vim rmt.conf

[source]
type: redis cluster
servers :
 - 172.19.0.183:6379

[target]
type: single
servers:
 - 49.4.129.78:36379

[common]
listen: 0.0.0.0:8008

配置文件说明：
source是数据源的配置
target是目的位置
type是数据类型：
redis-cluster集群的类型就是redis-cluster
redis单点的类型为single

同步迁移数据

./redis-migrate-tool-master/src/redis-migrate-tool -c rmt.conf -o log -d

查看同步结果：

[2018-07-27 14:43:37.767] rmt_redis.c:6601 Rdb file for node[172.19.0.183:6379] parsed finished, use: 0 s.
[2018-07-27 14:43:37.768] rmt_redis.c:1706 Start connecting to MASTER[172.19.0.184:6379].
[2018-07-27 14:43:37.769] rmt_redis.c:1740 Master[172.19.0.184:6379] replied to PING, replication can continue...
[2018-07-27 14:43:37.769] rmt_redis.c:1051 Partial resynchronization for MASTER[172.19.0.184:6379] not possible (no cached master).
[2018-07-27 14:43:37.770] rmt_redis.c:1110 Full resync from MASTER[172.19.0.184:6379]: a0bff73aba29b5a40a0c19a144dcc059e315fa85:130620269
[2018-07-27 14:43:37.868] rmt_redis.c:1517 MASTER <-> SLAVE sync: receiving 2676933 bytes from master[172.19.0.184:6379]
[2018-07-27 14:43:37.876] rmt_redis.c:1623 MASTER <-> SLAVE sync: RDB data for node[172.19.0.184:6379] is received, used: 0 s
[2018-07-27 14:43:37.876] rmt_redis.c:1643 rdb file node172.19.0.184:6379-1532673817770506-10061.rdb write complete
[2018-07-27 14:43:37.984] rmt_redis.c:6601 Rdb file for node[172.19.0.184:6379] parsed finished, use: 0 s.
[2018-07-27 14:43:37.985] rmt_redis.c:6709 All nodes' rdb file parsed finished for this write thread(0).​

由日志可以看出，所有节点的rdb数据迁移完毕。

参数说明

Options:
  -h, --help             : this help
  -V, --version          : show version and exit
  -d, --daemonize        : run as a daemon
  -I, --information      : print some useful information
  -n, --noreply          : don't receive the target redis reply
  -v, --verbosity=N      : set logging level (default: 5, min: 0, max: 11)
  -o, --output=S         : set logging file (default: stderr)
  -c, --conf-file=S      : set configuration file (default: rmt.conf)
  -p, --pid-file=S       : set pid file (default: off)
  -m, --mbuf-size=N      : set mbuf size (default: 512)
  -C, --command=S        : set command to execute (default: redis_migrate)
  -r, --source-role=S    : set the source role (default: single, you can input: single, twemproxy or redis_cluster)
  -R, --target-role=S    : set the target role (default: single, you can input: single, twemproxy or redis_cluster)
  -T, --thread=N         : set how many threads to run the job(default: 2)
  -b, --buffer=S         : set buffer size to run the job (default: 1048576 byte, unit:G/M/K)
  -f, --from=S           : set source redis address (default: 127.0.0.1:6379)
  -t, --to=S             : set target redis group address (default: 127.0.0.1:6380)
  -s, --step=N           : set step (default: 1)