redis单机主从搭建

Posted 2020-09-16 lzfj

tar zxvf redis-2.8.13.tar.gz

cd redis-2.8.13

make

1、安装主库

mkdir /opt/redis/sbin -p

mkdir    /opt/redis/bin -p

mkdir /data/redis/redis6379/

cp redis.conf /data/redis/redis6379/6379.conf【配置文件下拉到最底部】

cd src

cp redis-se* /opt/redis/sbin/

cp redis-check-dump /opt/redis/bin/

cp redis-check-aof /opt/redis/bin/

cp redis-cli /opt/redis/bin/

启动:

/opt/redis/sbin/redis-server /data/redis/redis6379/6379.conf

关闭：

/opt/redis/bin/redis-cli shutdown

 

系统初始化：

sed -i -r ‘/vm.overcommit_memory*/d‘ /etc/sysctl.conf

sed -i -r ‘/vm.swappiness*/d‘ /etc/sysctl.conf

echo "vm.overcommit_memory = 1" >>/etc/sysctl.conf

echo "vm.swappiness    = 1" >>/etc/sysctl.conf

/sbin/sysctl -q    -p /etc/sysctl.conf

sed -i -r ‘/redis soft nofile.*/d‘ /etc/security/limits.conf

sed -i -r ‘/redis hard nofile.*/d‘ /etc/security/limits.conf

echo "redis    soft nofile 288000" >> /etc/security/limits.conf

echo "redis hard nofile 288000" >> /etc/security/limits.conf

sed -i -r ‘/redis soft nproc.*/d‘  /etc/security/limits.conf

sed -i -r ‘/redis hard nproc.*/d‘  /etc/security/limits.conf

echo "redis soft nproc unlimited">>/etc/security/limits.conf

echo "redis hard nproc unlimited">>/etc/security/limits.conf

 

2、安装从库

mkdir -p /data/redis/redis6380/

cd /data/redis/redis6380/

cp ../redis6379/6379.conf 6380.conf

sed -i ‘s/6379/6380/g‘ 6380.conf     #使用替换配置文件中的6379为6380

echo "slaveof 192.168.98.199 6379" >> 6380.conf     #在6380.conf中添加slaveof ip port

 

3、启动主从

先启主库：

/opt/redis/sbin/redis-server /data/redis/redis6379/6379.conf

启动从库：

/opt/redis/sbin/redis-server /data/redis/redis6380/6380.conf

 

4、从库日志

[[email protected] redis6380]# less /data/redis/6380.log

[5545] 13 Sep 22:30:18.164 # Server started, Redis version 2.8.13

[5545] 13 Sep 22:30:18.164 * The server is now ready to accept connections on port 6380

[5545] 13 Sep 22:30:18.164 * Connecting to MASTER 192.168.98.199:6379

[5545] 13 Sep 22:30:18.171 * MASTER <-> SLAVE sync started

[5545] 13 Sep 22:30:18.176 * Non blocking connect for SYNC fired the event.

[5545] 13 Sep 22:30:18.180 * Master replied to PING, replication can continue...

[5545] 13 Sep 22:30:18.180 * Partial resynchronization not possible (no cached master)

[5545] 13 Sep 22:30:18.180 * Full resync from master: 668093d0cb4a27a7d025f4d36feff13f622368d3:1

[5545] 13 Sep 22:30:18.207 * MASTER <-> SLAVE sync: receiving 18 bytes from master

[5545] 13 Sep 22:30:18.207 * MASTER <-> SLAVE sync: Flushing old data

[5545] 13 Sep 22:30:18.207 * MASTER <-> SLAVE sync: Loading DB in memory

[5545] 13 Sep 22:30:18.207 * MASTER <-> SLAVE sync: Finished with success

[5545] 13 Sep 22:30:18.208 * Background append only file rewriting started by pid 5549

[5549] 13 Sep 22:30:18.213 * SYNC append only file rewrite performed

[5549] 13 Sep 22:30:18.213 * AOF rewrite: 6 MB of memory used by copy-on-write

[5545] 13 Sep 22:30:18.277 * Background AOF rewrite terminated with success

[5545] 13 Sep 22:30:18.277 * Parent diff successfully flushed to the rewritten AOF (0 bytes)

[5545] 13 Sep 22:30:18.278 * Background AOF rewrite finished successfully

 

5、测试主从

主库：

[[email protected] redis6380]# /opt/redis/bin/redis-cli -p 6379

127.0.0.1:6379> keys *

(empty list or set)

127.0.0.1:6379> set fuzhi ‘fuzhiceshi‘

OK

127.0.0.1:6379> get fuzhi

"fuzhiceshi"

127.0.0.1:6379> info replication     【 利用 info Replication 查看复制关系】

# Replication

role:master

connected_slaves:1

slave0:ip=192.168.98.199,port=6380,state=online,offset=1297,lag=1

master_repl_offset:1297

repl_backlog_active:1

repl_backlog_size:1048576

repl_backlog_first_byte_offset:2

repl_backlog_histlen:1296

从库：

[[email protected] ~]# /opt/redis/bin/redis-cli -p 6380

127.0.0.1:6380> keys *

1) "fuzhi"

127.0.0.1:6380> get fuzhi

"fuzhiceshi"

127.0.0.1:6380> set ceshiku ‘shifouxieru‘

(error) READONLY You can‘t write against a read only slave.  【测试库不能写入数据】

127.0.0.1:6380> info replication

# Replication

role:slave

master_host:192.168.98.199

master_port:6379

master_link_status:up

master_last_io_seconds_ago:1

master_sync_in_progress:0

slave_repl_offset:1283

slave_priority:100

slave_read_only:1

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

127.0.0.1:6380>

 

redis可执行文件:

redis-server : Redis服务器的daemon启动程序

redis-cli : Redis命令行操作工具。当然，你也可以用telnet根据其纯文本协议来操作

redis-benchmark : Redis性能测试工具，测试Redis在你的系统及你的配置下的读写性能

redis-stat : Redis状态检测工具，可以检测Redis当前状态参数及延迟状况

 

---

6379.conf:

daemonize yes

pidfile 6379.pid

port 6379

tcp-backlog 511

timeout 0

tcp-keepalive 0

loglevel notice

logfile "/data/redis/6379.log"

databases 16

save 900 1

save 300 10

save 60 10000

stop-writes-on-bgsave-error yes

rdbcompression yes

rdbchecksum yes

dbfilename 6379.rdb

dir /data/redis/redis6379

slave-serve-stale-data yes

slave-read-only yes

repl-disable-tcp-nodelay no

slave-priority 100

maxclients 10000

maxmemory 100M

maxmemory-policy volatile-lru

appendonly yes

appendfilename "6379.aof"

appendfsync    everysec

no-appendfsync-on-rewrite no

auto-aof-rewrite-percentage 100

auto-aof-rewrite-min-size 64mb

lua-time-limit 5000

slowlog-log-slower-than 10000

slowlog-max-len 128

latency-monitor-threshold 0

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

hll-sparse-max-bytes 3000

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