十一.安装Redis

redis是一个NOSql数据库，在java web中，经常用来存储session等，官网是https://redis.io/

当前官网指出的稳定版本为3.2.6，下载地址为http://download.redis.io/releases/redis-3.2.6.tar.gz

1.下载redis

[root@iZ25ufmpy4sZ local]# wget http://download.redis.io/releases/redis-3.2.6.tar.gz
---- ::--  http://download.redis.io/releases/redis-3.2.6.tar.gz
Resolving download.redis.io (download.redis.io)... 109.74.203.151
Connecting to download.redis.io (download.redis.io)|109.74.203.151|:... failed: Connection timed out.
Retrying.

---- ::--  (try: )  http://download.redis.io/releases/redis-3.2.6.tar.gz
Connecting to download.redis.io (download.redis.io)|109.74.203.151|:... connected.
HTTP request sent, awaiting response...  OK
Length:  (1.5M) [application/x-gzip]
Saving to: ‘redis-3.2..tar.gz’

%[======================================================================================================================================================================================>] ,,   .40MB/s   in .1s   

-- :: (1.40 MB/s) - ‘redis-3.2..tar.gz’ saved [/]

2.解压

[root@iZ25ufmpy4sZ local]# tar -xvf redis-3.2..tar.gz 

3.进入redis目录并make

[root@iZ25ufmpy4sZ local]# cd  redis-3.2.
[root@iZ25ufmpy4sZ redis-3.2.]# ls
-RELEASENOTES  BUGS  CONTRIBUTING  COPYING  deps  INSTALL  Makefile  MANIFESTO  README.md  redis.conf  runtest  runtest-cluster  runtest-sentinel  sentinel.conf  src  tests  utils
[root@iZ25ufmpy4sZ redis-3.2.]# make
cd src && make all
make[]: Entering directory `/usr/local/redis-3.2./src'
rm -rf redis-server redis-sentinel redis-cli redis-benchmark redis-check-rdb redis-check-aof *.o *.gcda *.gcno *.gcov redis.info lcov-html
(cd ../deps && make distclean)
make[]: Entering directory `/usr/local/redis-3.2./deps'
make[]: Leaving directory `/usr/local/redis-3.2./src'

4.进入src目录make install

[root@iZ25ufmpy4sZ redis-3.2.]# cd src/
[root@iZ25ufmpy4sZ src]# ls
adlist.c     anet.o       cluster.h  debug.c       geo.o          lzf_d.c          networking.o  quicklist.o        redis-check-aof.c  release.h      sds.o           slowlog.h       t_hash.o    valgrind.sup
adlist.h     aof.c        cluster.o  debugmacro.h  help.h         lzf_d.o          notify.c      rand.c             redis-check-aof.o  release.o      sentinel.c      slowlog.o       t_list.c    version.h
adlist.o     aof.o        config.c   debug.o       hyperloglog.c  lzf.h            notify.o      rand.h             redis-check-rdb    replication.c  sentinel.o      solarisfixes.h  t_list.o    ziplist.c
ae.c         asciilogo.h  config.h   dict.c        hyperloglog.o  lzfP.h           object.c      rand.o             redis-check-rdb.c  replication.o  server.c        sort.c          t_set.c     ziplist.h
ae_epoll.c   bio.c        config.o   dict.h        intset.c       Makefile         object.o      rdb.c              redis-check-rdb.o  rio.c          server.h        sort.o          t_set.o     ziplist.o
ae_evport.c  bio.h        crc16.c    dict.o        intset.h       Makefile.dep     pqsort.c      rdb.h              redis-cli          rio.h          server.o        sparkline.c     t_string.c  zipmap.c
ae.h         bio.o        crc16.o    endianconv.c  intset.o       memtest.c        pqsort.h      rdb.o              redis-cli.c        rio.o          setproctitle.c  sparkline.h     t_string.o  zipmap.h
ae_kqueue.c  bitops.c     crc64.c    endianconv.h  latency.c      memtest.o        pqsort.o      redisassert.h      redis-cli.o        scripting.c    setproctitle.o  sparkline.o     t_zset.c    zipmap.o
ae.o         bitops.o     crc64.h    endianconv.o  latency.h      mkreleasehdr.sh  pubsub.c      redis-benchmark    redis-sentinel     scripting.o    sha1.c          syncio.c        t_zset.o    zmalloc.c
ae_select.c  blocked.c    crc64.o    fmacros.h     latency.o      multi.c          pubsub.o      redis-benchmark.c  redis-server       sdsalloc.h     sha1.h          syncio.o        util.c      zmalloc.h
anet.c       blocked.o    db.c       geo.c         lzf_c.c        multi.o          quicklist.c   redis-benchmark.o  redis-trib.rb      sds.c          sha1.o          testhelp.h      util.h      zmalloc.o
anet.h       cluster.c    db.o       geo.h         lzf_c.o        networking.c     quicklist.h   redis-check-aof    release.c          sds.h          slowlog.c       t_hash.c        util.o
[root@iZ25ufmpy4sZ src]# make install

Hint: It's a good idea to run 'make test' ;)

    INSTALL install
    INSTALL install
    INSTALL install
    INSTALL install
    INSTALL install

5.此时启动，只要运行scr目录下的redis-server，但是不符合Linux管理，建议在Nginx根目录下创建一个bin和etc来分别存放系统文件和配置文件，如下

[root@iZ25ufmpy4sZ redis-3.2.]# pwd
/usr/local/redis-3.2.
[root@iZ25ufmpy4sZ redis-3.2.]# mkdir bin
[root@iZ25ufmpy4sZ redis-3.2.]# mkdir etc
[root@iZ25ufmpy4sZ redis-3.2.]# ls
-RELEASENOTES  bin  BUGS  CONTRIBUTING  COPYING  deps  etc  INSTALL  Makefile  MANIFESTO  README.md  redis.conf  runtest  runtest-cluster  runtest-sentinel  sentinel.conf  src  tests  utils

6.copy对应文件到bin和etc目录下

[root@iZ25ufmpy4sZ redis-3.2.]# cd src
[root@iZ25ufmpy4sZ src]# ls
adlist.c     anet.o       cluster.h  debug.c       geo.o          lzf_d.c          networking.o  quicklist.o        redis-check-aof.c  release.h      sds.o           slowlog.h       t_hash.o    valgrind.sup
adlist.h     aof.c        cluster.o  debugmacro.h  help.h         lzf_d.o          notify.c      rand.c             redis-check-aof.o  release.o      sentinel.c      slowlog.o       t_list.c    version.h
adlist.o     aof.o        config.c   debug.o       hyperloglog.c  lzf.h            notify.o      rand.h             redis-check-rdb    replication.c  sentinel.o      solarisfixes.h  t_list.o    ziplist.c
ae.c         asciilogo.h  config.h   dict.c        hyperloglog.o  lzfP.h           object.c      rand.o             redis-check-rdb.c  replication.o  server.c        sort.c          t_set.c     ziplist.h
ae_epoll.c   bio.c        config.o   dict.h        intset.c       Makefile         object.o      rdb.c              redis-check-rdb.o  rio.c          server.h        sort.o          t_set.o     ziplist.o
ae_evport.c  bio.h        crc16.c    dict.o        intset.h       Makefile.dep     pqsort.c      rdb.h              redis-cli          rio.h          server.o        sparkline.c     t_string.c  zipmap.c
ae.h         bio.o        crc16.o    endianconv.c  intset.o       memtest.c        pqsort.h      rdb.o              redis-cli.c        rio.o          setproctitle.c  sparkline.h     t_string.o  zipmap.h
ae_kqueue.c  bitops.c     crc64.c    endianconv.h  latency.c      memtest.o        pqsort.o      redisassert.h      redis-cli.o        scripting.c    setproctitle.o  sparkline.o     t_zset.c    zipmap.o
ae.o         bitops.o     crc64.h    endianconv.o  latency.h      mkreleasehdr.sh  pubsub.c      redis-benchmark    redis-sentinel     scripting.o    sha1.c          syncio.c        t_zset.o    zmalloc.c
ae_select.c  blocked.c    crc64.o    fmacros.h     latency.o      multi.c          pubsub.o      redis-benchmark.c  redis-server       sdsalloc.h     sha1.h          syncio.o        util.c      zmalloc.h
anet.c       blocked.o    db.c       geo.c         lzf_c.c        multi.o          quicklist.c   redis-benchmark.o  redis-trib.rb      sds.c          sha1.o          testhelp.h      util.h      zmalloc.o
anet.h       cluster.c    db.o       geo.h         lzf_c.o        networking.c     quicklist.h   redis-check-aof    release.c          sds.h          slowlog.c       t_hash.c        util.o
[root@iZ25ufmpy4sZ src]# cp  redis-benchmark redis-check-aof redis-cli redis-server ../bin
[root@iZ25ufmpy4sZ src]# cd ../bin
[root@iZ25ufmpy4sZ bin]# ls
redis-benchmark  redis-check-aof  redis-cli  redis-server

7.修改配置文件redis.cnf，把属性daemonize改为yes

# Close the connection after a client is idle for N seconds ( to disable)
timeout 

# TCP keepalive.
#
# If non-zero, use SO_KEEPALIVE to send TCP ACKs to clients in absence
# of communication. This is useful for two reasons:
#
# ) Detect dead peers.
# ) Take the connection alive from the point of view of network
#    equipment in the middle.
#
# On Linux, the specified value (in seconds) is the period used to send ACKs.
# Note that to close the connection the double of the time is needed.
# On other kernels the period depends on the kernel configuration.
#
# A reasonable value for this option is  seconds, which is the new
# Redis default starting with Redis 3.2..
tcp-keepalive 

################################# GENERAL #####################################

# 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

# If you run Redis from upstart or systemd, Redis can interact with your
# supervision tree. Options:
#   supervised no      - no supervision interaction
#   supervised upstart - signal upstart by putting Redis into SIGSTOP mode
#   supervised systemd - signal systemd by writing READY= to $NOTIFY_SOCKET
#   supervised auto    - detect upstart or systemd method based on
#                        UPSTART_JOB or NOTIFY_SOCKET environment variables
# Note: these supervision methods only signal "process is ready."
#       They do not enable continuous liveness pings back to your supervisor.
supervised no

# If a pid file is specified, Redis writes it where specified at startup
# and removes it at exit.
#
# When the server runs non daemonized, no pid file is created if none is
# specified in the configuration. When the server is daemonized, the pid file
# is used even if not specified, defaulting to "/var/run/redis.pid".
#
# Creating a pid file is best effort: if Redis is not able to create it
# nothing bad happens, the server will start and run normally.
pidfile /var/run/redis_6379.pid

8.启动redis

[root@iZ25ufmpy4sZ bin]# ./redis-server ../etc/redis.conf
                _._
           _.-``__ ''-._
      _.-``    `.  `_.  ''-._           Redis 3.2. (/)  bit
  .-`` .-```.  ```\/    _.,_ ''-._
 (    '      ,       .-`  | `,    )     Running in standalone mode
 |`-._`-...-` __...-.``-._|'` _.-'|     Port:
 |    `-._   `._    /     _.-'    |     PID: 4496
  `-._    `-._  `-./  _.-'    _.-'
 |`-._`-._    `-.__.-'    _.-'_.-'|
 |    `-._`-._        _.-'_.-'    |           http://redis.io
  `-._    `-._`-.__.-'_.-'    _.-'
 |`-._`-._    `-.__.-'    _.-'_.-'|
 |    `-._`-._        _.-'_.-'    |
  `-._    `-._`-.__.-'_.-'    _.-'
      `-._    `-.__.-'    _.-'
          `-._        _.-'
              `-.__.-'                                               

:M  Jan ::46.374 # WARNING: The TCP backlog setting of  cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of .
:M  Jan ::46.374 # Server started, Redis version 3.2.
:M  Jan ::46.374 # WARNING overcommit_memory is set to ! Background save may fail under low memory condition. To fix this issue add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the command 'sysctl vm.overcommit_memory=1' for this to take effect.
:M  Jan ::46.374 # WARNING you have Transparent Huge Pages (THP) support enabled in your kernel. This will create latency and memory usage issues with Redis. To fix this issue run the command 'echo never > /sys/kernel/mm/transparent_hugepage/enabled' as root, and add it to your /etc/rc.local in order to retain the setting after a reboot. Redis must be restarted after THP is disabled.
:M  Jan ::46.374 * The server is now ready to accept connections on port 

9.如果还是觉得麻烦，可以在redis根目录创建两个脚本，start.sh和stop.sh，内容分别如下

[root@iZ25ufmpy4sZ redis]# ls
-RELEASENOTES  bin  BUGS  CONTRIBUTING  COPYING  deps  dump.rdb  etc  INSTALL  Makefile  MANIFESTO  README.md  redis.conf  runtest  runtest-cluster  runtest-sentinel  sentinel.conf  src  start.sh  stop.sh  tests  utils
[root@iZ25ufmpy4sZ redis]# cat start.sh
/usr/local/redis/bin/redis-server /usr/local/redis/etc/redis.conf
[root@iZ25ufmpy4sZ redis]# cat stop.sh
/usr/local/redis/bin/redis-cli shutdown