Redis集群详解_Redis_

 # cd /software # wget http://download.redis.io/releases/redis-6.0.5.tar.gz # tar zxf redis-5.0.4.tar.gz && mv redis-6.0.5/ /usr/local/redis # cd /usr/local/redis && make && make install # echo $? 0 

 # vim /usr/libexec/redis-shutdown #!/bin/bash # # Wrapper to close properly redis and sentinel test x"$REDIS_DEBUG" != x && set -x REDIS_CLI=/usr/local/bin/redis-cli # Retrieve service name SERVICE_NAME="$1" if [ -z "$SERVICE_NAME" ]; then SERVICE_NAME=redis fi # Get the proper config file based on service name CONFIG_FILE="/usr/local/redis/$SERVICE_NAME.conf" # Use awk to retrieve host, port from config file HOST=`awk '/^[[:blank:]]*bind/ { print $2 }' $CONFIG_FILE | tail -n1` PORT=`awk '/^[[:blank:]]*port/ { print $2 }' $CONFIG_FILE | tail -n1` PASS=`awk '/^[[:blank:]]*requirepass/ { print $2 }' $CONFIG_FILE | tail -n1` SOCK=`awk '/^[[:blank:]]*unixsocket\s/ { print $2 }' $CONFIG_FILE | tail -n1` # Just in case, use default host, port HOST=${HOST:-127.0.0.1} if [ "$SERVICE_NAME" = redis ]; then PORT=${PORT:-6379} else PORT=${PORT:-26739} fi # Setup additional parameters # e.g password-protected redis instances [ -z "$PASS" ] || ADDITIONAL_PARAMS="-a $PASS" # shutdown the service properly if [ -e "$SOCK" ] ; then $REDIS_CLI -s $SOCK $ADDITIONAL_PARAMS shutdown else $REDIS_CLI -h $HOST -p $PORT $ADDITIONAL_PARAMS shutdown fi

 # chmod +x /usr/libexec/redis-shutdown # useradd -s /sbin/nologin redis # chown -R redis:redis /usr/local/redis # chown -R reids:redis /data/redis # yum install -y bash-completion && source /etc/profile #命令补全 # systemctl daemon-reload # systemctl enable redis 

 # mkdir -p /data/redis # vim /usr/local/redis/redis.conf bind 192.168.30.128 #监听ip，多个ip用空格分隔 daemonize yes #允许后台启动 logfile "/usr/local/redis/redis.log" #日志路径 dir /data/redis #数据库备份文件存放目录 masterauth 123456 #slave连接master密码，master可省略 requirepass 123456 #设置master连接密码，slave可省略 appendonly yes #在/data/redis/目录生成appendonly.aof文件，将每一次写操作请求都追加到appendonly.aof 文件中 # echo 'vm.overcommit_memory=1' >> /etc/sysctl.conf # sysctl -p 

 # mkdir -p /data/redis # vim /usr/local/redis/redis.conf bind 192.168.30.129 daemonize yes logfile "/usr/local/redis/redis.log" dir /data/redis replicaof 192.168.30.128 6379 masterauth 123456 requirepass 123456 appendonly yes # echo 'vm.overcommit_memory=1' >> /etc/sysctl.conf # sysctl -p 

 # mkdir -p /data/redis # vim /usr/local/redis/redis.conf bind 192.168.30.130 daemonize yes logfile "/usr/local/redis/redis.log" dir /data/redis replicaof 192.168.30.128 6379 masterauth 123456 requirepass 123456 appendonly yes # echo 'vm.overcommit_memory=1' >> /etc/sysctl.conf # sysctl -p 

 # redis-cli -h 192.168.30.128 -a 123456 Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe. 192.168.30.128:6379> info replication # Replication role:master connected_slaves:2 slave0:ip=192.168.30.129,port=6379,state=online,offset=168,lag=1 slave1:ip=192.168.30.130,port=6379,state=online,offset=168,lag=1 master_replid:fb4941e02d5032ad74c6e2383211fc58963dbe90 master_replid2:0000000000000000000000000000000000000000 master_repl_offset:168 second_repl_offset:-1 repl_backlog_active:1 repl_backlog_size:1048576 repl_backlog_first_byte_offset:1 repl_backlog_histlen:168 

 # redis-cli -h 192.168.30.129 -a 123456 info replication Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe. # Replication role:slave master_host:192.168.30.128 master_port:6379 master_link_status:up master_last_io_seconds_ago:1 master_sync_in_progress:0 slave_repl_offset:196 slave_priority:100 slave_read_only:1 connected_slaves:0 master_replid:fb4941e02d5032ad74c6e2383211fc58963dbe90 master_replid2:0000000000000000000000000000000000000000 master_repl_offset:196 second_repl_offset:-1 repl_backlog_active:1 repl_backlog_size:1048576 repl_backlog_first_byte_offset:1 repl_backlog_histlen:196 

 192.168.30.128:6379> keys * (empty list or set) 192.168.30.128:6379> set key1 100 OK 192.168.30.128:6379> set key2 lzx OK 192.168.30.128:6379> keys * 1) "key1" 2) "key2" 

 # redis-cli -h 192.168.30.129 -a 123456 Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe. 192.168.30.129:6379> keys * 1) "key2" 2) "key1" 192.168.30.129:6379> CONFIG GET dir 1) "dir" 2) "/data/redis" 192.168.30.129:6379> CONFIG GET dbfilename 1) "dbfilename" 2) "dump.rdb" 192.168.30.129:6379> get key1 "100" 192.168.30.129:6379> get key2 "lzx" 192.168.30.129:6379> set key3 aaa (error) READONLY You can't write against a read only replica. 

 # redis-cli -h 192.168.30.130 -a 123456 Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe. 192.168.30.130:6379> keys * 1) "key2" 2) "key1" 192.168.30.130:6379> CONFIG GET dir 1) "dir" 2) "/data/redis" 192.168.30.130:6379> CONFIG GET dbfilename 1) "dbfilename" 2) "dump.rdb" 192.168.30.130:6379> get key1 "100" 192.168.30.130:6379> get key2 "lzx" 192.168.30.130:6379> set key3 aaa (error) READONLY You can't write against a read only replica.