我们正在将数据重新分配到新的群集节点，遇到问题并且现在陷入可能由错误导致的情况 . 在尝试重新加载时，我们收到以下消息：
[ERR]调用MIGRATE：ERR目标实例回复时显示错误：CLUSTERDOWN群集已关闭
但群集已经开始了！在我们遵循的步骤下面 .
首先，我们为新的单独服务器创建了一个空节点，然后将它添加到现有的redis集群中：
server1-ip:port master connected
server2-ip:port master connected
server3-ip:port master connected
server4-ip:port master connected
server5-ip:port master connected
new-server-ip:port master connected
我们开始使用此命令将数据从server1-ip：port重新分配到new-server-ip：port - >“./ red -trib.rb reshard --from --to --slots --yes ::” . 我们遇到了一个错误：
Moving slot 7402 from 6f70203705a1f26b561f39a600930f7b22dfeb98
Moving slot 7403 from 6f70203705a1f26b561f39a600930f7b22dfeb98
Moving slot 6904 from server1-ip:port to new-server-ip:port: .......$
Moving slot 6905 from server1-ip:port to new-server-ip:port: .......$
Moving slot 6906 from server1-ip:port to new-server-ip:port: .......$
Moving slot 6907 from server1-ip:port to new-server-ip:port: .......$
Moving slot 6908 from server1-ip:port to new-server-ip:port: .......$
Moving slot 6909 from server1-ip:port to new-server-ip:port: .......$
[ERR] Calling MIGRATE: IOERR error or timeout reading to target instance
我们尝试使用此命令修复/检查打开的插槽./redis-trib.rb fix ip：port，然后重新启动resharding .
Performing Cluster Check (using node new-server-ip:port)
M: 80570f4d791d9834bd28322c25337be00e1370b2 new-server-ip:port
slots:6904-6909 (6 slots) master
0 additional replica(s)
M: 9527684833c252c5dd0ee5f44afa13730cb689ee server2-ip:port
slots:0-50 (51 slots) master
0 additional replica(s)
M: 8b6accb0259089f4f5fc3942b34fb6b7fcbde33e server5-ip:port
slots:51-592,6566-6903 (880 slots) master
0 additional replica(s)
M: 5b887a2fc38eade4b6366b4d1de2926733e082d2 server3-ip:port
slots:926-3318 (2393 slots) master
0 additional replica(s)
M: 6f70203705a1f26b561f39a600930f7b22dfeb98 server1-ip:port
slots:6910-16383 (9474 slots) master
0 additional replica(s)
M: 0a52eec580372bd365351be0b0833dbd364aa633 server4-ip:port
slots:593-925,3319-6565 (3580 slots) master
0 additional replica(s)
[OK] All nodes agree about slots configuration.
Check for open slots...
Check slots coverage...
[OK] All 16384 slots covered.
我们重新启动resharding并成功重启，但是我们遇到了一个错误：
Moving slot 7007 from 6f70203705a1f26b561f39a600930f7b22dfeb98
Moving slot 7008 from 6f70203705a1f26b561f39a600930f7b22dfeb98
Moving slot 7009 from 6f70203705a1f26b561f39a600930f7b22dfeb98
Moving slot 6910 from server1-ip:port to new-server-ip:port: .......$
Moving slot 6911 from server1-ip:port to new-server-ip:port: .......$
Moving slot 6912 from server1-ip:port to new-server-ip:port: .......$
[ERR] Calling MIGRATE: ERR Target instance replied with error: CLUSTERDOWN The cluster is down
但实际上群集没有关闭：
9527684833c252c5dd0ee5f44afa13730cb689ee server2-ip:port master - 0 1485250688989 2 connected 0-50
5b887a2fc38eade4b6366b4d1de2926733e082d2 server3-ip:port master - 0 1485250686984 3 connected 926-3318
80570f4d791d9834bd28322c25337be00e1370b2 new-server-ip:port myself,master - 0 0 6 connected 6904-6911 [6912-<-6f70203705a1f26b561f39a600930f7b22dfeb98]
8b6accb0259089f4f5fc3942b34fb6b7fcbde33e server5-ip:port master - 0 1485250687986 5 connected 51-592 6566-6903
6f70203705a1f26b561f39a600930f7b22dfeb98 server1-ip:port master - 0 1485250689993 1 connected 6912-16383
0a52eec580372bd365351be0b0833dbd364aa633 server4-ip:port master - 0 1485250688989 4 connected 593-925 3319-6565
我们尝试通过运行./redis-trib.rb修复ip：port再次修复它，但它给了我们这个错误：
Performing Cluster Check (using node new-server-ip:port)
M: 80570f4d791d9834bd28322c25337be00e1370b2 new-server-ip:port
slots:6904-6911 (8 slots) master
0 additional replica(s)
M: 9527684833c252c5dd0ee5f44afa13730cb689ee server2-ip:port
slots:0-50 (51 slots) master
0 additional replica(s)
M: 5b887a2fc38eade4b6366b4d1de2926733e082d2 server3-ip:port
slots:926-3318 (2393 slots) master
0 additional replica(s)
M: 8b6accb0259089f4f5fc3942b34fb6b7fcbde33e server5-ip:port
slots:51-592,6566-6903 (880 slots) master
0 additional replica(s)
M: 6f70203705a1f26b561f39a600930f7b22dfeb98 server1-ip:port
slots:6912-16383 (9472 slots) master
0 additional replica(s)
M: 0a52eec580372bd365351be0b0833dbd364aa633 server4-ip:port
slots:593-925,3319-6565 (3580 slots) master
0 additional replica(s)
[OK] All nodes agree about slots configuration.
Check for open slots...
[WARNING] Node new-server-ip:port has slots in importing state (6912).
[WARNING] Node server1-ip:port has slots in migrating state (6912).
[WARNING] The following slots are open: 6912
Fixing open slot 6912
Set as migrating in: server1-ip:port
Set as importing in: new-server-ip:port
Moving slot 6912 from server1-ip:port to new-server-ip:port:
[ERR] Calling MIGRATE: ERR Target instance replied with error: CLUSTERDOWN The cluster is down
info for server1-ip：port
服务器
redis_version:3.2.3
redis_git_sha1:00000000
redis_git_dirty:0
redis_build_id:4992f89db2d932d
redis_mode:cluster
os:Linux 3.13.0-37-generic x86_64
arch_bits:64
multiplexing_api:epoll
gcc_version:4.8.2
process_id:25284
run_id:eeb0be947760b033df999a84b1f1024ffc56f94d
tcp_port:7010
uptime_in_seconds:6719679
uptime_in_days:77
hz:10
lru_clock:8854109
executable:/home/cybranding/redis-3.2.3/redis-stable/src/redis-server
config_file:/etc/redis_cluster_client2/redis-3.2.3/7010/redis.conf
客户
connected_clients:6
client_longest_output_list:0
client_biggest_input_buf:0
blocked_clients:0
记忆
used_memory:263262791176
used_memory_human:245.18G
used_memory_rss:222207938560
used_memory_rss_human:206.95G
used_memory_peak:263262843256
used_memory_peak_human:245.18G
total_system_memory:405738954752
total_system_memory_human:377.87G
used_memory_lua:37888
used_memory_lua_human:37.00K
maxmemory:0
maxmemory_human:0B
maxmemory_policy:noeviction
mem_fragmentation_ratio:0.84
mem_allocator:jemalloc-4.0.3
持久性
loading:0
rdb_changes_since_last_save:3477248820
rdb_bgsave_in_progress:0
rdb_last_save_time:1478529438
rdb_last_bgsave_status:ok
rdb_last_bgsave_time_sec:-1
rdb_current_bgsave_time_sec:-1
aof_enabled:1
aof_rewrite_in_progress:0
aof_rewrite_scheduled:0
aof_last_rewrite_time_sec:12415
aof_current_rewrite_time_sec:-1
aof_last_bgrewrite_status:ok
aof_last_write_status:ok
aof_current_size:76954766881
aof_base_size:71475261210
aof_pending_rewrite:0
aof_buffer_length:0
aof_rewrite_buffer_length:0
aof_pending_bio_fsync:0
aof_delayed_fsync:0
Stats
total_connections_received:135923
total_commands_processed:1624882108
instantaneous_ops_per_sec:121
total_net_input_bytes:183344702562
total_net_output_bytes:238996158132
instantaneous_input_kbps:7.65
instantaneous_output_kbps:0.94
rejected_connections:0
sync_full:0
sync_partial_ok:0
sync_partial_err:0
expired_keys:2696602
evicted_keys:0
keyspace_hits:293331974
keyspace_misses:4634274
pubsub_channels:0
pubsub_patterns:0
latest_fork_usec:8247933
migrate_cached_sockets:0
复制
role:master
connected_slaves:0
master_repl_offset:0
repl_backlog_active:0
repl_backlog_size:1048576
repl_backlog_first_byte_offset:0
repl_backlog_histlen:0
CPU
used_cpu_sys:228998.14
used_cpu_user:106213.70
used_cpu_sys_children:13948.03
used_cpu_user_children:38121.80
群集
cluster_enabled:1
Keyspace
db0:keys=157638834,expires=32133,avg_ttl=38497283
info for new-server-ip：port
服务器
redis_version:3.2.3
redis_git_sha1:00000000
redis_git_dirty:0
redis_build_id:b5038506891fcfe5
redis_mode:cluster
os:Linux 4.4.0-47-generic x86_64
arch_bits:64
multiplexing_api:epoll
gcc_version:5.4.0
process_id:29729
run_id:be9a3b0fa9e56dd78829f432189cc3faed2b70a4
tcp_port:7015
uptime_in_seconds:600025
uptime_in_days:6
hz:10
lru_clock:8853916
executable:/root/redis-3.2.3/redis-3.2.3/src/redis-server
config_file:/etc/redis_cluster_client2/7015/redis.conf
客户
connected_clients:5
client_longest_output_list:0
client_biggest_input_buf:0
blocked_clients:0
记忆
used_memory:197574704
used_memory_human:188.42M
used_memory_rss:209297408
used_memory_rss_human:199.60M
used_memory_peak:399048784
used_memory_peak_human:380.56M
total_system_memory:270378438656
total_system_memory_human:251.81G
used_memory_lua:37888
used_memory_lua_human:37.00K
maxmemory:0
maxmemory_human:0B
maxmemory_policy:noeviction
mem_fragmentation_ratio:1.06
mem_allocator:jemalloc-4.0.3
持久性
loading:0
rdb_changes_since_last_save:173468
rdb_bgsave_in_progress:0
rdb_last_save_time:1484648899
rdb_last_bgsave_status:ok
rdb_last_bgsave_time_sec:-1
rdb_current_bgsave_time_sec:-1
aof_enabled:1
aof_rewrite_in_progress:0
aof_rewrite_scheduled:0
aof_last_rewrite_time_sec:-1
aof_current_rewrite_time_sec:-1
aof_last_bgrewrite_status:ok
aof_last_write_status:ok
aof_current_size:71610854
aof_base_size:64129446
aof_pending_rewrite:0
aof_buffer_length:0
aof_rewrite_buffer_length:0
aof_pending_bio_fsync:0
aof_delayed_fsync:0
Stats
total_connections_received:4477
total_commands_processed:56480
instantaneous_ops_per_sec:0
total_net_input_bytes:3772430822
total_net_output_bytes:200708212
instantaneous_input_kbps:0.00
instantaneous_output_kbps:0.00
rejected_connections:0
sync_full:0
sync_partial_ok:0
sync_partial_err:0
expired_keys:217
evicted_keys:0
keyspace_hits:3981
keyspace_misses:403
pubsub_channels:0
pubsub_patterns:0
latest_fork_usec:0
migrate_cached_sockets:0
复制
role:master
connected_slaves:0
master_repl_offset:0
repl_backlog_active:0
repl_backlog_size:1048576
repl_backlog_first_byte_offset:0
repl_backlog_histlen:0
CPU
used_cpu_sys:317.34
used_cpu_user:209.47
used_cpu_sys_children:0.00
used_cpu_user_children:0.00
群集
cluster_enabled:1
Keyspace
db0:keys=150389,expires=28,avg_ttl=37790580
谢谢！