Redis的部署使用文檔

簡述：Redis是一個key-value存儲系統。和Memcached類似，它支持存儲的value類型相對更多，包括string(字符串)、list(鏈表)、set(集合)和zset(有序集合)。這些數據類型都支持push/pop、add/remove及取交集並集和差集及更豐富的操作，而且這些操作都是原子性的。在此基礎上，redis支持各種不同方式的排序。與memcached一樣，為了保證效率，數據都是緩存在內存中。區別的是redis會周期性的把更新的數據寫入磁盤或者把修改操作寫入追加的記錄文件，並且在此基礎上實現了master-slave(主從)同步。

環境：CentOS 5.5 x64

下載安裝：

1. cd /root/tools
2. wget http://redis.googlecode.com/files/redis-2.4.2.tar.gz
3. tar zxvf redis-2.4.2.tar.gz
4. cd redis-2.4.2
5. make && make install
6. cp redis.conf /etc/
7. cd

1. vi /etc/redis.conf

1. daemonize yes
2. pidfile /var/run/redis.pid
3. port 6379
5. #bind 127.0.0.1
6. timeout 600
7. loglevel notice
8. logfile /elain/logs/redis/redis.log
10. databases 16
12. save 900 1
13. save 300 10
14. save 60 10000
16. rdbcompression yes
17. dbfilename dump.rdb
19. dir /elain/data/redis/
21. # maxclients 128
23. appendonly yes
24. appendfilename appendonly.aof
26. # appendfsync always
27. appendfsync everysec
28. # appendfsync no
30. requirepass elain
32. no-appendfsync-on-rewrite no
33. auto-aof-rewrite-percentage 100
34. auto-aof-rewrite-min-size 64mb
36. slowlog-log-slower-than 10000
38. slowlog-max-len 1024
40. really-use-vm yes
41. vm-enabled yes
42. vm-swap-file /tmp/redis.swap
43. vm-max-memory 0
44. vm-page-size 32
45. vm-pages 134217728
46. vm-max-threads 4
48. hash-max-zipmap-entries 512
49. hash-max-zipmap-value 64
51. list-max-ziplist-entries 512
52. list-max-ziplist-value 64
54. set-max-intset-entries 512
56. zset-max-ziplist-entries 128
57. zset-max-ziplist-value 64
59. activerehashing yes
61. # include /path/to/local.conf
62. # include /path/to/other.conf

啟動：

1. redis-server /etc/redis.conf

開機加自啟動：

1. echo "redis-server /etc/redis.conf" >>/etc/rc.local

測試：

1. [root@md03 ~]# redis-cli -a elain
2. redis 127.0.0.1:6379> set elain 123456
3. OK
4. redis 127.0.0.1:6379> get elain
5. "123456"

查看狀態信息：

1. [root@md04 ~]# redis-cli info
2. redis_version:2.4.2
3. redis_git_sha1:00000000
4. redis_git_dirty:0
5. arch_bits:64
6. multiplexing_api:epoll
7. process_id:2204
8. uptime_in_seconds:25
9. uptime_in_days:0
10. lru_clock:2013834
11. used_cpu_sys:0.00
12. used_cpu_user:0.00
13. used_cpu_sys_children:0.00
14. used_cpu_user_children:0.00
15. connected_clients:1
16. connected_slaves:0
17. client_longest_output_list:0
18. client_biggest_input_buf:0
19. blocked_clients:0
20. used_memory:17505392
21. used_memory_human:16.69M
22. used_memory_rss:1617920
23. used_memory_peak:17496792
24. used_memory_peak_human:16.69M
25. mem_fragmentation_ratio:0.09
26. mem_allocator:jemalloc-2.2.1
27. loading:0
28. aof_enabled:1
29. changes_since_last_save:5
30. bgsave_in_progress:0
31. last_save_time:1320372561
32. bgrewriteaof_in_progress:0
33. total_connections_received:1
34. total_commands_processed:0
35. expired_keys:0
36. evicted_keys:0
37. keyspace_hits:2
38. keyspace_misses:8
39. pubsub_channels:0
40. pubsub_patterns:0
41. latest_fork_usec:0
42. vm_enabled:1
43. role:master
44. aof_current_size:237
45. aof_base_size:237
46. aof_pending_rewrite:0
47. vm_conf_max_memory:0
48. vm_conf_page_size:32
49. vm_conf_pages:134217728
50. vm_stats_used_pages:3
51. vm_stats_swapped_objects:3
52. vm_stats_swappin_count:0
53. vm_stats_swappout_count:3
54. vm_stats_io_newjobs_len:0
55. vm_stats_io_processing_len:0
56. vm_stats_io_processed_len:0
57. vm_stats_io_active_threads:0
58. vm_stats_blocked_clients:0
59. db0:keys=4,expires=0

主從同步配置：
只需把/etc/redis.conf 復制到 從機上,主、從機上把127.0.0.1 IP 改成本機ip，然後在從機上的redis.conf 裡添加以下幾行，重啟即可：

1. slave-serve-stale-data yes
2. slaveof 主服務器IP 6379
3. masterauth <master-password>

注：以上主從配置做了密碼驗證，也可不做驗證，不用加masterauth 選項