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目录
http://redis.io/
Netkiller OSCM 一键安装
curl -s https://raw.githubusercontent.com/oscm/shell/master/database/redis/redis.sh | bash
安装fedora的YUM源,
rpm -Uvh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-7.noarch.rpm
安装redis
# yum install redis# chkconfig redis on# service redis start
备份配置文件,
# cp /etc/redis.conf /etc/redis.conf.original
主从同步配置非常简单,只需在从服务器 /etc/redis.conf 文件中开启 slaveof 即可
slaveof 192.168.2.1 6379
查看 /var/log/redis/redis.log 日志,可以看到同步情况
[20274] 09 Jul 13:13:53 * Server started, Redis version 2.4.10[20274] 09 Jul 13:13:53 * DB loaded from disk: 0 seconds[20274] 09 Jul 13:13:53 * The server is now ready to accept connections on port 6379[20274] 09 Jul 13:13:54 * Connecting to MASTER...[20274] 09 Jul 13:13:54 * MASTER <-> SLAVE sync started[20274] 09 Jul 13:13:54 * Non blocking connect for SYNC fired the event.[20274] 09 Jul 13:13:54 * MASTER <-> SLAVE sync: receiving 672 bytes from master[20274] 09 Jul 13:13:54 * MASTER <-> SLAVE sync: Loading DB in memory[20274] 09 Jul 13:13:54 * MASTER <-> SLAVE sync: Finished with success
$ sudo apt-get install redis-server
$ dpkg -s redis-serverPackage: redis-serverStatus: install ok installedPriority: optionalSection: databaseInstalled-Size: 208Maintainer: Chris LambArchitecture: amd64Source: redisVersion: 2:1.2.6-1Depends: libc6 (>= 2.7), adduserConffiles: /etc/redis/redis.conf a19bad63017ec19def2c3a8a07bdc362 /etc/logrotate.d/redis-server 06755b99ef70d62a56cff94cbfc36de7 /etc/init.d/redis-server 3742555c10ab16fdd67fcbaf92faf694 /etc/bash_completion.d/redis-cli 848565df7f222dc03c8d5cb34b9e0188Description: Persistent key-value database with network interface Redis is a key-value database in a similar vein to memcache but the dataset is non-volatile. Redis additionally provides native support for atomically manipulating and querying data structures such as lists and sets. . The dataset is stored entirely in memory and periodically flushed to disk.Homepage: http://code.google.com/p/redis/
$ cat /etc/redis/redis.conf# Redis configuration file example# By default Redis does not run as a daemon. Use 'yes' if you need it.# Note that Redis will write a pid file in /var/run/redis.pid when daemonized.daemonize yes# When run as a daemon, Redis write a pid file in /var/run/redis.pid by default.# You can specify a custom pid file location here.pidfile /var/run/redis.pid# Accept connections on the specified port, default is 6379port 6379# If you want you can bind a single interface, if the bind option is not# specified all the interfaces will listen for connections.#bind 127.0.0.1# Close the connection after a client is idle for N seconds (0 to disable)timeout 300# Set server verbosity to 'debug'# it can be one of:# debug (a lot of information, useful for development/testing)# notice (moderately verbose, what you want in production probably)# warning (only very important / critical messages are logged)loglevel notice# Specify the log file name. Also 'stdout' can be used to force# the demon to log on the standard output. Note that if you use standard# output for logging but daemonize, logs will be sent to /dev/nulllogfile /var/log/redis/redis-server.log# Set the number of databases. The default database is DB 0, you can select# a different one on a per-connection basis using SELECTwhere# dbid is a number between 0 and 'databases'-1databases 16################################ SNAPSHOTTING ################################### Save the DB on disk:## save ## Will save the DB if both the given number of seconds and the given# number of write operations against the DB occurred.## In the example below the behaviour will be to save:# after 900 sec (15 min) if at least 1 key changed# after 300 sec (5 min) if at least 10 keys changed# after 60 sec if at least 10000 keys changedsave 900 1save 300 10save 60 10000# Compress string objects using LZF when dump .rdb databases?# For default that's set to 'yes' as it's almost always a win.# If you want to save some CPU in the saving child set it to 'no' but# the dataset will likely be bigger if you have compressible values or keys.rdbcompression yes# The filename where to dump the DBdbfilename dump.rdb# For default save/load DB in/from the working directory# Note that you must specify a directory not a file name.dir /var/lib/redis################################# REPLICATION ################################## Master-Slave replication. Use slaveof to make a Redis instance a copy of# another Redis server. Note that the configuration is local to the slave# so for example it is possible to configure the slave to save the DB with a# different interval, or to listen to another port, and so on.## slaveof # If the master is password protected (using the "requirepass" configuration# directive below) it is possible to tell the slave to authenticate before# starting the replication synchronization process, otherwise the master will# refuse the slave request.## masterauth ################################## SECURITY #################################### Require clients to issue AUTH before processing any other# commands. This might be useful in environments in which you do not trust# others with access to the host running redis-server.## This should stay commented out for backward compatibility and because most# people do not need auth (e.g. they run their own servers).## requirepass foobared################################### LIMITS ##################################### Set the max number of connected clients at the same time. By default there# is no limit, and it's up to the number of file descriptors the Redis process# is able to open. The special value '0' means no limts.# Once the limit is reached Redis will close all the new connections sending# an error 'max number of clients reached'.## maxclients 128# Don't use more memory than the specified amount of bytes.# When the memory limit is reached Redis will try to remove keys with an# EXPIRE set. It will try to start freeing keys that are going to expire# in little time and preserve keys with a longer time to live.# Redis will also try to remove objects from free lists if possible.## If all this fails, Redis will start to reply with errors to commands# that will use more memory, like SET, LPUSH, and so on, and will continue# to reply to most read-only commands like GET.## WARNING: maxmemory can be a good idea mainly if you want to use Redis as a# 'state' server or cache, not as a real DB. When Redis is used as a real# database the memory usage will grow over the weeks, it will be obvious if# it is going to use too much memory in the long run, and you'll have the time# to upgrade. With maxmemory after the limit is reached you'll start to get# errors for write operations, and this may even lead to DB inconsistency.## maxmemory ############################## APPEND ONLY MODE ################################ By default Redis asynchronously dumps the dataset on disk. If you can live# with the idea that the latest records will be lost if something like a crash# happens this is the preferred way to run Redis. If instead you care a lot# about your data and don't want to that a single record can get lost you should# enable the append only mode: when this mode is enabled Redis will append# every write operation received in the file appendonly.log. This file will# be read on startup in order to rebuild the full dataset in memory.## Note that you can have both the async dumps and the append only file if you# like (you have to comment the "save" statements above to disable the dumps).# Still if append only mode is enabled Redis will load the data from the# log file at startup ignoring the dump.rdb file.## The name of the append only file is "appendonly.log"## IMPORTANT: Check the BGREWRITEAOF to check how to rewrite the append# log file in background when it gets too big.appendonly no# The fsync() call tells the Operating System to actually write data on disk# instead to wait for more data in the output buffer. Some OS will really flush# data on disk, some other OS will just try to do it ASAP.## Redis supports three different modes:## no: don't fsync, just let the OS flush the data when it wants. Faster.# always: fsync after every write to the append only log . Slow, Safest.# everysec: fsync only if one second passed since the last fsync. Compromise.## The default is "always" that's the safer of the options. It's up to you to# understand if you can relax this to "everysec" that will fsync every second# or to "no" that will let the operating system flush the output buffer when# it want, for better performances (but if you can live with the idea of# some data loss consider the default persistence mode that's snapshotting).appendfsync always# appendfsync everysec# appendfsync no############################### ADVANCED CONFIG ################################ Glue small output buffers together in order to send small replies in a# single TCP packet. Uses a bit more CPU but most of the times it is a win# in terms of number of queries per second. Use 'yes' if unsure.glueoutputbuf yes# Use object sharing. Can save a lot of memory if you have many common# string in your dataset, but performs lookups against the shared objects# pool so it uses more CPU and can be a bit slower. Usually it's a good# idea.## When object sharing is enabled (shareobjects yes) you can use# shareobjectspoolsize to control the size of the pool used in order to try# object sharing. A bigger pool size will lead to better sharing capabilities.# In general you want this value to be at least the double of the number of# very common strings you have in your dataset.## WARNING: object sharing is experimental, don't enable this feature# in production before of Redis 1.0-stable. Still please try this feature in# your development environment so that we can test it better.shareobjects noshareobjectspoolsize 1024
$ sudo /etc/init.d/redis-server start
这里仍然使用 Netkiller OSCM 安装,源码安装
curl -s https://raw.githubusercontent.com/oscm/shell/master/database/redis/source/redis-4.0.1.sh | bash
http://redis.io/commands
$ redis-cli inforedis_version:1.2.6arch_bits:64multiplexing_api:epolluptime_in_seconds:859uptime_in_days:0connected_clients:1connected_slaves:0used_memory:619490used_memory_human:604.97Kchanges_since_last_save:0bgsave_in_progress:0last_save_time:1311100746bgrewriteaof_in_progress:0total_connections_received:4total_commands_processed:0role:master$ redis-cli set name neoOK$ redis-cli get nameneo$ telnet localhost 6379Trying ::1...telnet: connect to address ::1: Connection refusedTrying 127.0.0.1...Connected to localhost (127.0.0.1).Escape character is '^]'.get name$3neoquitConnection closed by foreign host.