折腾：
［已解决］为Flask的后台任务而在CentOS中安装Redis
期间，去运行redis，结果出错：
(SIPEvents) ➜ redis-3.2.3 src/redis-server 7998:C 03 Sep 21:15:13.528 # Warning: no config file specified, using the default config. In order to specify a config file use src/redis-server /path/to/redis.conf 7998:M 03 Sep 21:15:13.531 # Creating Server TCP listening socket *:6379: unable to bind socket |
redis-server Creating Server TCP listening socket *:6379: unable to bind socket
Installing Redis on Debian as a Service | Thomas Hunter II
Redis Creating Server TCP listening socket *:6379: unable to bind socket – 程序园
(SIPEvents) ➜ redis-3.2.3 pwd /root/tools/redis-3.2.3 (SIPEvents) ➜ redis-3.2.3 ll total 196K -rw-rw-r– 1 root root 74K Aug 2 17:00 00-RELEASENOTES -rw-rw-r– 1 root root 53 Aug 2 17:00 BUGS -rw-rw-r– 1 root root 1.8K Aug 2 17:00 CONTRIBUTING -rw-rw-r– 1 root root 1.5K Aug 2 17:00 COPYING drwxrwxr-x 7 root root 4.0K Sep 3 21:12 deps -rw-rw-r– 1 root root 11 Aug 2 17:00 INSTALL -rw-rw-r– 1 root root 151 Aug 2 17:00 Makefile -rw-rw-r– 1 root root 4.2K Aug 2 17:00 MANIFESTO -rw-rw-r– 1 root root 6.7K Aug 2 17:00 README.md -rw-rw-r– 1 root root 46K Aug 2 17:00 redis.conf -rwxrwxr-x 1 root root 271 Aug 2 17:00 runtest -rwxrwxr-x 1 root root 280 Aug 2 17:00 runtest-cluster -rwxrwxr-x 1 root root 281 Aug 2 17:00 runtest-sentinel -rw-rw-r– 1 root root 7.0K Aug 2 17:00 sentinel.conf drwxrwxr-x 2 root root 4.0K Sep 3 21:13 src drwxrwxr-x 10 root root 4.0K Aug 2 17:00 tests drwxrwxr-x 7 root root 4.0K Aug 2 17:00 utils |
(SIPEvents) ➜ redis-3.2.3 mkdir /etc/redis (SIPEvents) ➜ redis-3.2.3 cp redis.conf /etc/redis (SIPEvents) ➜ redis-3.2.3 ll /etc/redis/redis.conf -rw-r–r– 1 root root 46K Sep 3 21:59 /etc/redis/redis.conf |
然后再去运行试试：
结果就可以了：
(SIPEvents) ➜ redis-3.2.3 src/redis-server /etc/redis/redis.conf _._ _.-“__ ”-._ _.-“ `. `_. ”-._ Redis 3.2.3 (00000000/0) 64 bit .-“ .-“`. “`\/ _.,_ ”-._ ( ‘ , .-` | `, ) Running in standalone mode |`-._`-…-` __…-.“-._|’` _.-‘| Port: 6379 | `-._ `._ / _.-‘ | PID: 10353 `-._ `-._ `-./ _.-‘ _.-‘ |`-._`-._ `-.__.-‘ _.-‘_.-‘| | `-._`-._ _.-‘_.-‘ | http://redis.io `-._ `-._`-.__.-‘_.-‘ _.-‘ |`-._`-._ `-.__.-‘ _.-‘_.-‘| | `-._`-._ _.-‘_.-‘ | `-._ `-._`-.__.-‘_.-‘ _.-‘ `-._ `-.__.-‘ _.-‘ `-._ _.-‘ `-.__.-‘ 10353:M 03 Sep 22:01:12.263 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128. 10353:M 03 Sep 22:01:12.263 # Server started, Redis version 3.2.3 10353:M 03 Sep 22:01:12.263 # 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. 10353:M 03 Sep 22:01:12.263 # 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. 10353:M 03 Sep 22:01:12.263 * The server is now ready to accept connections on port 6379 |
如图：
－》
官网的教程：
Redis Quick Start – Redis
http://redis.io/topics/quickstart
不靠谱啊：
因为：说了，如果这是为了开发，则可以不用指定配置的。。。
详见：
［已解决］安装完毕redis后出错：Warning: no config file specified using the default config
然后去control＋C去暂停：
^C10353:signal-handler (1472911501) Received SIGINT scheduling shutdown… 10353:M 03 Sep 22:05:01.842 # User requested shutdown… 10353:M 03 Sep 22:05:01.842 * Saving the final RDB snapshot before exiting. 10353:M 03 Sep 22:05:01.848 * DB saved on disk 10353:M 03 Sep 22:05:01.848 * Removing the pid file. 10353:M 03 Sep 22:05:01.848 # Redis is now ready to exit, bye bye… |
然后再去测试是否正常工作：
(SIPEvents) ➜ SIPEvents redis-server /etc/redis/redis.conf & [1] 10484 (SIPEvents) ➜ SIPEvents _._ _.-“__ ”-._ _.-“ `. `_. ”-._ Redis 3.2.3 (00000000/0) 64 bit .-“ .-“`. “`\/ _.,_ ”-._ ( ‘ , .-` | `, ) Running in standalone mode |`-._`-…-` __…-.“-._|’` _.-‘| Port: 6379 | `-._ `._ / _.-‘ | PID: 10484 `-._ `-._ `-./ _.-‘ _.-‘ |`-._`-._ `-.__.-‘ _.-‘_.-‘| | `-._`-._ _.-‘_.-‘ | http://redis.io `-._ `-._`-.__.-‘_.-‘ _.-‘ |`-._`-._ `-.__.-‘ _.-‘_.-‘| | `-._`-._ _.-‘_.-‘ | `-._ `-._`-.__.-‘_.-‘ _.-‘ `-._ `-.__.-‘ _.-‘ `-._ _.-‘ `-.__.-‘ 10484:M 03 Sep 22:10:51.132 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128. 10484:M 03 Sep 22:10:51.133 # Server started, Redis version 3.2.3 10484:M 03 Sep 22:10:51.133 # 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. 10484:M 03 Sep 22:10:51.133 # 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. 10484:M 03 Sep 22:10:51.133 * DB loaded from disk: 0.000 seconds 10484:M 03 Sep 22:10:51.133 * The server is now ready to accept connections on port 6379 (SIPEvents) ➜ SIPEvents redis-cli 127.0.0.1:6379> ping PONG 127.0.0.1:6379> set myname crifan OK 127.0.0.1:6379> get myname “crifan” 127.0.0.1:6379> help redis-cli 3.2.3 To get help about Redis commands type: “help @<group>” to get a list of commands in <group> “help <command>” for help on <command> “help <tab>” to get a list of possible help topics “quit” to exit To set redis-cli perferences: “:set hints” enable online hints “:set nohints” disable online hints Set your preferences in ~/.redisclirc 127.0.0.1:6379> help set SET key value [EX seconds] [PX milliseconds] [NX|XX] summary: Set the string value of a key since: 1.0.0 group: string 127.0.0.1:6379> help get GET key summary: Get the value of a key since: 1.0.0 group: string 127.0.0.1:6379> |
说明可以工作了。
［总结］
此处redis-server之所以没能正常工作，是因为没有提供配置文件。
redis提供了一个默认的配置文件，默认是放在源码内了，redis.conf
解决办法是：
使用默认的配置文件，且放到合适的地方：
然后使用配置文件去运行：
(SIPEvents) ➜ redis-3.2.3 pwd /root/tools/redis-3.2.3 (SIPEvents) ➜ redis-3.2.3 ll total 196K -rw-rw-r– 1 root root 74K Aug 2 17:00 00-RELEASENOTES -rw-rw-r– 1 root root 53 Aug 2 17:00 BUGS -rw-rw-r– 1 root root 1.8K Aug 2 17:00 CONTRIBUTING -rw-rw-r– 1 root root 1.5K Aug 2 17:00 COPYING drwxrwxr-x 7 root root 4.0K Sep 3 21:12 deps -rw-rw-r– 1 root root 11 Aug 2 17:00 INSTALL -rw-rw-r– 1 root root 151 Aug 2 17:00 Makefile -rw-rw-r– 1 root root 4.2K Aug 2 17:00 MANIFESTO -rw-rw-r– 1 root root 6.7K Aug 2 17:00 README.md -rw-rw-r– 1 root root 46K Aug 2 17:00 redis.conf -rwxrwxr-x 1 root root 271 Aug 2 17:00 runtest -rwxrwxr-x 1 root root 280 Aug 2 17:00 runtest-cluster -rwxrwxr-x 1 root root 281 Aug 2 17:00 runtest-sentinel -rw-rw-r– 1 root root 7.0K Aug 2 17:00 sentinel.conf drwxrwxr-x 2 root root 4.0K Sep 3 21:13 src drwxrwxr-x 10 root root 4.0K Aug 2 17:00 tests drwxrwxr-x 7 root root 4.0K Aug 2 17:00 utils (SIPEvents) ➜ redis-3.2.3 mkdir /etc/redis (SIPEvents) ➜ redis-3.2.3 cp redis.conf /etc/redis (SIPEvents) ➜ redis-3.2.3 ll /etc/redis/redis.conf -rw-r–r– 1 root root 46K Sep 3 21:59 /etc/redis/redis.conf redis-server /etc/redis/redis.conf |
然后，想要测试是否正常工作，可以去：
redis-server /etc/redis/redis.conf & redis-cli 127.0.0.1:6379> ping PONG 127.0.0.1:6379> set myname crifan OK 127.0.0.1:6379> get myname “crifan” |
即可说明正常工作，可以正常保存和读取数据了。
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