標籤:redis3.0叢集
親測jedis(jedis2.7.2)用戶端 JedisCluster 可用
1:安裝redis cluster 以及依賴
1.安裝zlib
wget:htpp://zlib.net/zlib-1.2.8.tar.gz tar -zxvf zlib-1.2.8.tar.gz cd zlib-1.2.8 ./configure make make install
2.安裝redis
wget:http://download.redis.io/redis-stable.tar.gz tar -zxvf redis-stable.tar.gz cd redis-stable make make install
3.安裝ruby
gem sources -a http://ruby.taobao.org/ yum install rubygems gem install redis
2:配置redis
1. 建立節點目錄
為了區分master 和slave ,slave比master 多1000
mkdir /server/cluster/6380 6381 6382 7380 7381 7382
通用配置
mkdir -p /server/server/cluster/redis-common.conf
daemonize yes #守護進程運行(後台運行) tcp-backlog 511 timeout 0 tcp-keepalive 0 loglevel notice databases 16 dir /opt/redis/data slave-serve-stale-data yes #slave唯讀 slave-read-only yes #not use default repl-disable-tcp-nodelay yes slave-priority 100 #開啟aof持久化 appendonly yes #每秒一次aof寫 appendfsync everysec #關閉在aof rewrite的時候對新的寫操作進行fsync no-appendfsync-on-rewrite yes auto-aof-rewrite-min-size 64mb lua-time-limit 5000 #開啟redis叢集 cluster-enabled yes #節點互連逾時的閥值 cluster-node-timeout 15000 cluster-migration-barrier 1 slowlog-log-slower-than 10000 slowlog-max-len 128 notify-keyspace-events "" hash-max-ziplist-entries 512 hash-max-ziplist-value 64 list-max-ziplist-entries 512 list-max-ziplist-value 64 set-max-intset-entries 512 zset-max-ziplist-entries 128 zset-max-ziplist-value 64 activerehashing yes client-output-buffer-limit normal 0 0 0 client-output-buffer-limit slave 256mb 64mb 60 client-output-buffer-limit pubsub 32mb 8mb 60 hz 10 aof-rewrite-incremental-fsync yes
特殊配置
記得更改port
vim /server/cluster/6380/redis.conf vim /server/cluster/6381/redis.conf vim /server/cluster/6382/redis.conf vim /serve/cluster/7380/redis.conf vim /server/cluster/7381/redis.conf vim /server/cluster/6382/redis.conf
#包含通用配置 include /server/cluster/redis-common.conf #監聽tcp連接埠 port 6379 #最大可用記憶體 maxmemory 100m #記憶體耗盡時採用的淘汰策略: # volatile-lru -> remove the key with an expire set using an LRU algorithm # allkeys-lru -> remove any key accordingly to the LRU algorithm # volatile-random -> remove a random key with an expire set # allkeys-random -> remove a random key, any key # volatile-ttl -> remove the key with the nearest expire time (minor TTL) # noeviction -> don‘t expire at all, just return an error on write operations maxmemory-policy allkeys-lru #aof隱藏檔 appendfilename "appendonly-6379.aof" #不開啟rdb儲存,只用於添加slave過程 dbfilename dump-6379.rdb #cluster設定檔(啟動自動產生) cluster-config-file nodes-6379.conf #部署在同一機器的redis執行個體,把auto-aof-rewrite搓開,因為cluster環境下記憶體佔用基本一致. #防止同意機器下瞬間fork所有redis進程做aof rewrite,佔用大量記憶體(ps:cluster必須開啟aof) auto-aof-rewrite-percentage 80-100
2:建立叢集
1.啟動redis服務
redis-server /server/cluster/6380/redis.conf redis-server /server/cluster/6381/redis.conf redis-server /server/cluster/6382/redis.conf redis-server /server/cluster/7380/redis.conf redis-server /server/cluster/7381/redis.conf redis-server /server/cluster/7382/redis.conf
2.建立叢集
cd /server/server/redis-stable/src ./redis-trib.rb create --replicas 1 host:6380 host:6381 host:6382 host:7380..... #這裡注意redis官方翻譯過來的叢集教程,使用的是127.0.0.1:prot 實際很坑爹, #如果你使用的是java並且使用JedisCluster API來訪問 #會報錯:too many redis cluster redirection。 #比如我的本機ip為123.133.122.141,那麼就應該使用123.133.122.141:prot #而非127.0.0.1 :port
命令的意義如下:
給定 redis-trib.rb 程式的命令是 create ,這表示我們希望建立一個新的叢集。
選項 --replicas 1 表示我們希望為叢集中的每個主節點建立一個從節點。
之後跟著的其他參數則是執行個體的地址清單,我們希望程式使用這些地址所指示的執行個體來建立新叢集。
以上命令的意思就是讓 redis-trib 程式建立一個包含三個主節點和三個從節點的叢集。
redis-trib 會列印出一份預想中的配置給你看,如果你覺得沒問題的話,就可以輸入 yes ,redis-trib 就會將這份配置應用到叢集當中。
查看叢集資訊
redis-cli -p 6380 -c127.0.0.1:6380>cluster infocluster_state:okcluster_slots_assigned:16384cluster_slots_ok:16384cluster_slots_pfail:0cluster_slots_fail:0cluster_known_nodes:6cluster_size:3cluster_current_epoch:6cluster_my_epoch:1cluster_stats_messages_sent:19161cluster_stats_messages_received:19161
可以看到當前cluster_state 是ok的
使用./redis-trib.rb check host port 檢查狀態
./redis-trib.rb check 115.28.138.150:6380 Connecting to node 115.28.138.150:6380: OK Connecting to node 115.28.138.150:7380: OK Connecting to node 115.28.138.150:7382: OK Connecting to node 115.28.138.150:7381: OK Connecting to node 115.28.138.150:6382: OK Connecting to node 115.28.138.150:6381: OK >>> Performing Cluster Check (using node 115.28.138.150:6380) M: 3046c8e6efbcea5c77e90483d97b928c5e4fbe05 115.28.138.150:6380 slots:0-5460 (5461 slots) master 1 additional replica(s) S: 2f045aaecb9addea7ae8ef636e3a5415686889e4 115.28.138.150:7380 slots: (0 slots) slave replicates 3046c8e6efbcea5c77e90483d97b928c5e4fbe05 S: c09ffe456b44abedd7ba811aaad470b3f7a36ea5 115.28.138.150:7382 slots: (0 slots) slave replicates ed7200bf1cdacc18661d70c39270995582559037 S: 1866624d3330f6491d5c57e269811694bb061759 115.28.138.150:7381 slots: (0 slots) slave replicates fb5c50e062d0e770aa534315fec1aa11488c228a M: ed7200bf1cdacc18661d70c39270995582559037 115.28.138.150:6382 slots:10923-16383 (5461 slots) master 1 additional replica(s) M: fb5c50e062d0e770aa534315fec1aa11488c228a 115.28.138.150:6381 slots:5461-10922 (5462 slots) master 1 additional replica(s) [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered.
本文出自 “瞄膩的專欄” 部落格,請務必保留此出處http://miaoni.blog.51cto.com/10720758/1696050
Redis叢集部署