Redis 状态信息详解（1）

[root@h102 ~]# cat /etc/issue
CentOS release 6.6 (Final)
Kernel \r on an \m

[root@h102 ~]# uname  -a 
Linux h102.temp 2.6.32-504.el6.x86_64 #1 SMP Wed Oct 15 04:27:16 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
[root@h102 ~]# 

[root@h102 redis]# wget http://download.redis.io/releases/redis-3.2.1.tar.gz
--2016-06-23 16:46:16--  http://download.redis.io/releases/redis-3.2.1.tar.gz
Resolving download.redis.io... 109.74.203.151
Connecting to download.redis.io|109.74.203.151|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1534696 (1.5M) [application/x-gzip]
Saving to: “redis-3.2.1.tar.gz”

100%[============================================================================================>] 1,534,696   12.5K/s   in 92s     

2016-06-23 16:47:48 (16.4 KB/s) - “redis-3.2.1.tar.gz” saved [1534696/1534696]

[root@h102 redis]# ls
redis-3.2.1.tar.gz
[root@h102 redis]# tar -zxvf redis-3.2.1.tar.gz 
redis-3.2.1/
redis-3.2.1/.gitignore
redis-3.2.1/00-RELEASENOTES
redis-3.2.1/BUGS
redis-3.2.1/CONTRIBUTING
redis-3.2.1/COPYING
redis-3.2.1/INSTALL
...
...
redis-3.2.1/utils/releasetools/
redis-3.2.1/utils/releasetools/01_create_tarball.sh
redis-3.2.1/utils/releasetools/02_upload_tarball.sh
redis-3.2.1/utils/releasetools/03_test_release.sh
redis-3.2.1/utils/releasetools/04_release_hash.sh
redis-3.2.1/utils/speed-regression.tcl
redis-3.2.1/utils/whatisdoing.sh
[root@h102 redis]# cd redis-3.2.1
[root@h102 redis-3.2.1]# make 
cd src && make all
make[1]: Entering directory `/usr/local/src/redis/redis-3.2.1/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[2]: Entering directory `/usr/local/src/redis/redis-3.2.1/deps'
(cd hiredis && make clean) > /dev/null || true
(cd linenoise && make clean) > /dev/null || true
(cd lua && make clean) > /dev/null || true
(cd geohash-int && make clean) > /dev/null || true
(cd jemalloc && [ -f Makefile ] && make distclean) > /dev/null || true
(rm -f .make-*)
make[2]: Leaving directory `/usr/local/src/redis/redis-3.2.1/deps'
(rm -f .make-*)
...
...
    CC redis-cli.o
    LINK redis-cli
    CC redis-benchmark.o
    LINK redis-benchmark
    INSTALL redis-check-rdb
    CC redis-check-aof.o
    LINK redis-check-aof

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

make[1]: Leaving directory `/usr/local/src/redis/redis-3.2.1/src'
[root@h102 redis-3.2.1]# echo $?
0
[root@h102 redis-3.2.1]# 

[root@h102 redis-3.2.1]# cd src/
[root@h102 src]# ls  | grep -v "\."
Makefile
redis-benchmark
redis-check-aof
redis-check-rdb
redis-cli
redis-sentinel
redis-server
[root@h102 src]# ./redis-server --help
Usage: ./redis-server [/path/to/redis.conf] [options]
       ./redis-server - (read config from stdin)
       ./redis-server -v or --version
       ./redis-server -h or --help
       ./redis-server --test-memory <megabytes>

Examples:
       ./redis-server (run the server with default conf)
       ./redis-server /etc/redis/6379.conf
       ./redis-server --port 7777
       ./redis-server --port 7777 --slaveof 127.0.0.1 8888
       ./redis-server /etc/myredis.conf --loglevel verbose

Sentinel mode:
       ./redis-server /etc/sentinel.conf --sentinel
[root@h102 src]# ./redis-server --version
Redis server v=3.2.1 sha=00000000:0 malloc=jemalloc-4.0.3 bits=64 build=588e5be7450e0a73
[root@h102 src]#

[root@h102 src]# redis-server 
36305:C 23 Jun 17:00:28.456 # Warning: no config file specified, using the default config. In order to specify a config file use redis-server /path/to/redis.conf
36305:M 23 Jun 17:00:28.457 * Increased maximum number of open files to 10032 (it was originally set to 1024).
                _._                                                  
           _.-``__ ''-._                                             
      _.-``    `.  `_.  ''-._           Redis 3.2.1 (00000000/0) 64 bit
  .-`` .-```.  ```\/    _.,_ ''-._                                   
 (    '      ,       .-`  | `,    )     Running in standalone mode
 |`-._`-...-` __...-.``-._|'` _.-'|     Port: 6379
 |    `-._   `._    /     _.-'    |     PID: 36305
  `-._    `-._  `-./  _.-'    _.-'                                   
 |`-._`-._    `-.__.-'    _.-'_.-'|                                  
 |    `-._`-._        _.-'_.-'    |           http://redis.io        
  `-._    `-._`-.__.-'_.-'    _.-'                                   
 |`-._`-._    `-.__.-'    _.-'_.-'|                                  
 |    `-._`-._        _.-'_.-'    |                                  
  `-._    `-._`-.__.-'_.-'    _.-'                                   
      `-._    `-.__.-'    _.-'                                       
          `-._        _.-'                                           
              `-.__.-'                                               

36305:M 23 Jun 17:00:28.459 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
36305:M 23 Jun 17:00:28.467 # Server started, Redis version 3.2.1
36305:M 23 Jun 17:00:28.468 # WARNING overcommit_memory is set to 0! 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.
36305:M 23 Jun 17:00:28.468 # 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.
36305:M 23 Jun 17:00:28.468 * The server is now ready to accept connections on port 6379