## linux查看redis安装路径
redis-cli -h 127.0.0.1 -p 6379 redis-cli monitor > redis2.log
/usr/local/redis-3.2.5/src/redis-server /usr/local/redis-3.2.5/redis.conf
[root@my-test-01 ~]$free -m total used free shared buff/cache available Mem: 64266 27547 16269 0 20450 35959 Swap: 0 0 0
登录redis客户端查看容量 [root@my-test-01 ~]$redis-cli -h 127.0.0.1 -p 6379 127.0.0.1:6379> info memory # Memory used_memory:5076792 used_memory_human:4.84M used_memory_rss:7237632 used_memory_rss_human:6.90M used_memory_peak:27065200 used_memory_peak_human:25.81M total_system_memory:67388731392 total_system_memory_human:62.76G used_memory_lua:52224 used_memory_lua_human:51.00K maxmemory:134217728 maxmemory_human:128.00M maxmemory_policy:volatile-lru mem_fragmentation_ratio:1.43 mem_allocator:jemalloc-4.0.3
将监控日志写入log文件 [root@my-test-01 ~]$redis-cli monitor > redis-op2.log
[root@my-test-01 ~]$redis-cli -h 127.0.0.1 -p 6379 127.0.0.1:6379> info commandstats # Commandstats cmdstat_get:calls=3897162,usec=18758665,usec_per_call=4.81 cmdstat_set:calls=7235965,usec=40049820,usec_per_call=5.53 cmdstat_setnx:calls=2724,usec=18518,usec_per_call=6.80 cmdstat_setex:calls=1478703,usec=9878496,usec_per_call=6.68 cmdstat_del:calls=3531634,usec=20050810,usec_per_call=5.68 cmdstat_exists:calls=1625569,usec=6828950,usec_per_call=4.20 cmdstat_mget:calls=572,usec=4397,usec_per_call=7.69 cmdstat_lpush:calls=4,usec=58,usec_per_call=14.50 cmdstat_blpop:calls=4,usec=40,usec_per_call=10.00 cmdstat_sadd:calls=6371,usec=25038,usec_per_call=3.93 cmdstat_sismember:calls=1620372,usec=7241691,usec_per_call=4.47 cmdstat_scard:calls=1621524,usec=5919773,usec_per_call=3.65 cmdstat_spop:calls=6,usec=17,usec_per_call=2.83 cmdstat_smembers:calls=4335,usec=21872,usec_per_call=5.05 cmdstat_zadd:calls=3252,usec=14673,usec_per_call=4.51 cmdstat_zrange:calls=617,usec=4631,usec_per_call=7.51 cmdstat_hset:calls=86,usec=638,usec_per_call=7.42 cmdstat_hget:calls=189,usec=1249,usec_per_call=6.61 cmdstat_hincrby:calls=13,usec=76,usec_per_call=5.85 cmdstat_hdel:calls=204,usec=561,usec_per_call=2.75 cmdstat_hvals:calls=20,usec=96,usec_per_call=4.80 cmdstat_hexists:calls=16,usec=42,usec_per_call=2.62 cmdstat_incrby:calls=114,usec=1050,usec_per_call=9.21 cmdstat_select:calls=8844,usec=10161,usec_per_call=1.15 cmdstat_expire:calls=201,usec=1568,usec_per_call=7.80 cmdstat_pexpire:calls=5150487,usec=22899495,usec_per_call=4.45 cmdstat_pexpireat:calls=104,usec=438,usec_per_call=4.21 cmdstat_keys:calls=3,usec=566,usec_per_call=188.67 cmdstat_scan:calls=2,usec=2028,usec_per_call=1014.00 cmdstat_auth:calls=4,usec=7,usec_per_call=1.75 cmdstat_ping:calls=95046,usec=112657,usec_per_call=1.19 cmdstat_save:calls=1447,usec=6546674,usec_per_call=4524.31 cmdstat_flushall:calls=582,usec=1970201,usec_per_call=3385.23 cmdstat_info:calls=614,usec=49658,usec_per_call=80.88 cmdstat_monitor:calls=1,usec=0,usec_per_call=0.00 cmdstat_ttl:calls=1,usec=5,usec_per_call=5.00 cmdstat_pttl:calls=1,usec=1,usec_per_call=1.00 cmdstat_config:calls=2612,usec=18257,usec_per_call=6.99 cmdstat_subscribe:calls=7,usec=46,usec_per_call=6.57 cmdstat_unsubscribe:calls=1,usec=12,usec_per_call=12.00 cmdstat_psubscribe:calls=2,usec=25,usec_per_call=12.50 cmdstat_publish:calls=12,usec=36,usec_per_call=3.00 cmdstat_eval:calls=45,usec=3015,usec_per_call=67.00 cmdstat_command:calls=279,usec=136413,usec_per_call=488.94 cmdstat_host::calls=2,usec=34,usec_per_call=17.00
linux下如何查看redis服务所在的安装路径？
检测后台进程是否存在 ps -ef | grep redis
[root@my-test-01 ~]$ps -ef | grep redis root 18637 1 0 Dec24 ? 00:28:59 redis-server *:6379 root 19317 3344 0 17:35 pts/0 00:00:00 redis-cli monitor root 30999 21658 0 17:37 pts/1 00:00:00 grep --color=auto redis
检测6379端口是否在监听 netstat -lntp | grep 6379
关闭 redis-cli shutdown kill -9 PID 启动 redis-server redis-server & 加上`&`号使redis以后台程序方式运行
redis-server /opt/test/conf/redis.conf # 启动的时候需要带上配置文件的目录。（关键） 127.0.0.1:6379> keys * // 查询keys
[root@my-test-01 etc]whereis redis-cliredis-cli: /usr/bin/redis-cli /usr/local/bin/redis-cli /usr/share/man/man1/redis-cli.1.gz[root@my-test-01 etc]whereis redis-serverredis-server: /usr/bin/redis-server /usr/local/bin/redis-server /usr/share/man/man1/redis-server.1.gz
[root@my-test-01 ~]$ps -u USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
[root@my-test-01 ~]$ps -u root PID TTY TIME CMD 18637 ? 00:29:00 redis-server
进入进程目录[root@my-test-01 ~]cd /proc[root@my-test-01 proc]ls -ltotal 0dr-xr-xr-x 9 root root 0 Dec 24 16:40 18637
[root@my-test-01 proc]cd 18637[root@my-test-01 18637]ls -ltotal 0lrwxrwxrwx 1 root root 0 Dec 27 17:42 cwd -> /etc-r-------- 1 root root 0 Dec 27 17:42 environlrwxrwxrwx 1 root root 0 Dec 27 17:42 exe -> /usr/local/bin/redis-server
找到这个文件rc.local就可以定位目录了： vi /etc/rc.local //在里面添加内容：/usr/local/redis/bin/redis-server /usr/local/redis/etc/redis.conf (意思就是开机调用这段开启redis的命令)
linux在启动一个进程时，系统会在/proc下创建一个以PID命名的文件夹，在该文件夹下会有我们的进程的信息，其中包括一个名为exe的文件即记录了绝对路径，通过ll或ls –l命令即可查看 cwd符号链接的是进程运行目录； exe符号连接就是执行程序的绝对路径； cmdline就是程序运行时输入的命令行命令； environ记录了进程运行时的环境变量； fd目录下是进程打开或使用的文件的符号连接
