在开始安装步骤之前，先把我的CentOs和redis版本号列出来：
| # | 系统/软件 | 版本号 |
| 1 |
CentOS7 |
CentOS Linux release 7.2.1511 (Core) |
| 2 | redis | redis.x86_64 0:3.2.12-2.el7 |
然后确保系统能上网，在我的操作系统下可以这样做：到Gnome图形桌面状态，点右上角的开关按钮，将PCI Ethernet选择为connect状态。
别看下面貌似有大段文字和许多步骤，其实真要操作的不多，蓝字才是关键。
第一步：进行yum安装redis
[root@localhost ~]# yum install redis Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile * base: mirrors.huaweicloud.com * extras: mirrors.huaweicloud.com * updates: mirrors.neusoft.edu.cn No package redis available. Error: Nothing to do
看到Nothing to do不要紧，只要先安装epel-release就好了。
root@localhost ~]# yum install epel-release Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile * base: mirrors.huaweicloud.com * extras: mirrors.huaweicloud.com * updates: mirrors.neusoft.edu.cn Resolving Dependencies --> Running transaction check ---> Package epel-release.noarch 0:7-11 will be installed --> Finished Dependency Resolution Dependencies Resolved ======================================================================================= Package Arch Version Repository Size ======================================================================================= Installing: epel-release noarch 7-11 extras 15 k Transaction Summary ======================================================================================= Install 1 Package Total download size: 15 k Installed size: 24 k Is this ok [y/d/N]: y Downloading packages: warning: /var/cache/yum/x86_64/7/extras/packages/epel-release-7-11.noarch.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY Public key for epel-release-7-11.noarch.rpm is not installed epel-release-7-11.noarch.rpm | 15 kB 00:00:00 Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 Importing GPG key 0xF4A80EB5: Userid : "CentOS-7 Key (CentOS 7 Official Signing Key) <security@centos.org>" Fingerprint: 6341 ab27 53d7 8a78 a7c2 7bb1 24c6 a8a7 f4a8 0eb5 Package : centos-release-7-2.1511.el7.centos.2.10.x86_64 (@anaconda) From : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 Is this ok [y/N]: y Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : epel-release-7-11.noarch 1/1 Verifying : epel-release-7-11.noarch 1/1 Installed: epel-release.noarch 0:7-11 Complete!
看在Complete之后，再安装redis
[root@localhost ~]# yum install redis Loaded plugins: fastestmirror, langpacks epel/x86_64/metalink | 9.0 kB 00:00:00 epel | 5.3 kB 00:00:00 (1/3): epel/x86_64/group_gz | 90 kB 00:00:00 (2/3): epel/x86_64/updateinfo | 1.0 MB 00:00:04 (3/3): epel/x86_64/primary_db | 6.9 MB 00:00:05 Loading mirror speeds from cached hostfile * base: mirrors.huaweicloud.com * epel: mirrors.yun-idc.com * extras: mirrors.huaweicloud.com * updates: mirrors.neusoft.edu.cn Resolving Dependencies --> Running transaction check ---> Package redis.x86_64 0:3.2.12-2.el7 will be installed --> Processing Dependency: libjemalloc.so.1()(64bit) for package: redis-3.2.12-2.el7.x86_64 --> Running transaction check ---> Package jemalloc.x86_64 0:3.6.0-1.el7 will be installed --> Finished Dependency Resolution Dependencies Resolved ======================================================================================= Package Arch Version Repository Size ======================================================================================= Installing: redis x86_64 3.2.12-2.el7 epel 544 k Installing for dependencies: jemalloc x86_64 3.6.0-1.el7 epel 105 k Transaction Summary ======================================================================================= Install 1 Package (+1 Dependent package) Total download size: 648 k Installed size: 1.7 M Is this ok [y/d/N]: y Downloading packages: warning: /var/cache/yum/x86_64/7/epel/packages/redis-3.2.12-2.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID 352c64e5: NOKEY Public key for redis-3.2.12-2.el7.x86_64.rpm is not installed (1/2): redis-3.2.12-2.el7.x86_64.rpm | 544 kB 00:00:01 (2/2): jemalloc-3.6.0-1.el7.x86_64.rpm | 105 kB 00:00:03 --------------------------------------------------------------------------------------- Total 176 kB/s | 648 kB 00:03 Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 Importing GPG key 0x352C64E5: Userid : "Fedora EPEL (7) <epel@fedoraproject.org>" Fingerprint: 91e9 7d7c 4a5e 96f1 7f3e 888f 6a2f aea2 352c 64e5 Package : epel-release-7-11.noarch (@extras) From : /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 Is this ok [y/N]: y Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : jemalloc-3.6.0-1.el7.x86_64 1/2 Installing : redis-3.2.12-2.el7.x86_64 2/2 Verifying : redis-3.2.12-2.el7.x86_64 1/2 Verifying : jemalloc-3.6.0-1.el7.x86_64 2/2 Installed: redis.x86_64 0:3.2.12-2.el7 Dependency Installed: jemalloc.x86_64 0:3.6.0-1.el7 Complete! [root@localhost ~]#
到了这，redis就装好了。
第二步：启动和关闭redis
装好后，可以用以下方式启动redis
[root@localhost ~]# systemctl start redis.service
按以下方式关闭redis
[root@localhost ~]# systemctl stop redis.service
按以下方式查看redis状态：
[root@localhost ~]# systemctl status redis.service ● redis.service - Redis persistent key-value database Loaded: loaded (/usr/lib/systemd/system/redis.service; disabled; vendor preset: disabled) Drop-In: /etc/systemd/system/redis.service.d └─limit.conf Active: inactive (dead) Jan 17 23:20:10 localhost.localdomain systemd[1]: Starting Redis persistent key-val.... Jan 17 23:20:10 localhost.localdomain systemd[1]: Started Redis persistent key-valu.... Jan 17 23:20:57 localhost.localdomain systemd[1]: Started Redis persistent key-valu.... Jan 17 23:21:12 localhost.localdomain systemd[1]: Stopping Redis persistent key-val.... Jan 17 23:21:13 localhost.localdomain systemd[1]: Stopped Redis persistent key-valu.... Hint: Some lines were ellipsized, use -l to show in full.
执行以下命令让redis开机启动：
[root@localhost ~]# systemctl enable redis Created symlink from /etc/systemd/system/multi-user.target.wants/redis.service to /usr/lib/systemd/system/redis.service.
然后开放端口和重启防火墙：
[root@localhost ~]# firewall-cmd --zone=public --add-port=80/tcp --permanent success [root@localhost ~]# firewall-cmd --zone=public --add-port=6379/tcp --permanent success [root@localhost ~]# systemctl restart firewalld
第三步：配置redis.conf
redis的配置文件放在了/etc下，使用vi来编辑它：
[root@localhost etc]# pwd /etc [root@localhost etc]# ls r*.conf radvd.conf redis-sentinel.conf resolv.conf rsyslog.conf redis.conf request-key.conf rsyncd.conf
用vi打开redis.conf,进行以下三项更改：
#bind 127.0.0.1 # 这里要注释掉，否则只有本机能访问
protected-mode no # 这里由yes改为no
requirepass 123456 # 这里设置上密码
改完后再重启下服务：
[root@localhost etc]# systemctl restart redis.service
然后用Redis-cli去探探：
[root@localhost etc]# redis-cli -h 127.0.0.1 -p 6379 127.0.0.1:6379> info NOAUTH Authentication required. 127.0.0.1:6379> auth 123456 OK 127.0.0.1:6379> info # Server redis_version:3.2.12 redis_git_sha1:00000000 redis_git_dirty:0 redis_build_id:7897e7d0e13773f redis_mode:standalone os:Linux 3.10.0-327.el7.x86_64 x86_64 arch_bits:64 multiplexing_api:epoll gcc_version:4.8.5 process_id:18025 run_id:3e1f70a2a356d5d1f71c7de12ea4122cd29f7755 tcp_port:6379 uptime_in_seconds:78 uptime_in_days:0 hz:10 lru_clock:2263691 executable:/usr/bin/redis-server config_file:/etc/redis.conf # Clients connected_clients:1 client_longest_output_list:0 client_biggest_input_buf:0 blocked_clients:0 # Memory used_memory:813440 used_memory_human:794.38K used_memory_rss:2527232 used_memory_rss_human:2.41M used_memory_peak:813440 used_memory_peak_human:794.38K total_system_memory:1025363968 total_system_memory_human:977.86M used_memory_lua:37888 used_memory_lua_human:37.00K maxmemory:0 maxmemory_human:0B maxmemory_policy:noeviction mem_fragmentation_ratio:3.11 mem_allocator:jemalloc-3.6.0 # Persistence loading:0 rdb_changes_since_last_save:0 rdb_bgsave_in_progress:0 rdb_last_save_time:1579321917 rdb_last_bgsave_status:ok rdb_last_bgsave_time_sec:-1 rdb_current_bgsave_time_sec:-1 aof_enabled:0 aof_rewrite_in_progress:0 aof_rewrite_scheduled:0 aof_last_rewrite_time_sec:-1 aof_current_rewrite_time_sec:-1 aof_last_bgrewrite_status:ok aof_last_write_status:ok # Stats total_connections_received:1 total_commands_processed:1 instantaneous_ops_per_sec:0 total_net_input_bytes:71 total_net_output_bytes:73 instantaneous_input_kbps:0.00 instantaneous_output_kbps:0.00 rejected_connections:0 sync_full:0 sync_partial_ok:0 sync_partial_err:0 expired_keys:0 evicted_keys:0 keyspace_hits:0 keyspace_misses:0 pubsub_channels:0 pubsub_patterns:0 latest_fork_usec:0 migrate_cached_sockets:0 # Replication role:master connected_slaves:0 master_repl_offset:0 repl_backlog_active:0 repl_backlog_size:1048576 repl_backlog_first_byte_offset:0 repl_backlog_histlen:0 # CPU used_cpu_sys:0.11 used_cpu_user:0.03 used_cpu_sys_children:0.00 used_cpu_user_children:0.00 # Cluster cluster_enabled:0 # Keyspace 127.0.0.1:6379> set name ufo OK 127.0.0.1:6379> get name "ufo" 127.0.0.1:6379>
到这里，redis就安装配置完毕了。
将再次完整操作记录粘贴如下，上面全操作成功的同学可以忽略：
[hy@localhost ~]$ su - root Password: [root@localhost ~]# pwd /root [root@localhost ~]# yum install epel-release Loaded plugins: fastestmirror, langpacks base | 3.6 kB 00:00 extras | 2.9 kB 00:00 updates | 2.9 kB 00:00 (1/4): base/7/x86_64/group_gz | 165 kB 00:00 (2/4): extras/7/x86_64/primary_db | 153 kB 00:01 (3/4): updates/7/x86_64/primary_db | 5.9 MB 00:04 (4/4): base/7/x86_64/primary_db | 6.0 MB 00:30 Determining fastest mirrors * base: ap.stykers.moe * extras: ap.stykers.moe * updates: mirror.lzu.edu.cn Resolving Dependencies --> Running transaction check ---> Package epel-release.noarch 0:7-11 will be installed --> Finished Dependency Resolution Dependencies Resolved ================================================================================ Package Arch Version Repository Size ================================================================================ Installing: epel-release noarch 7-11 extras 15 k Transaction Summary ================================================================================ Install 1 Package Total download size: 15 k Installed size: 24 k Is this ok [y/d/N]: y Downloading packages: warning: /var/cache/yum/x86_64/7/extras/packages/epel-release-7-11.noarch.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY Public key for epel-release-7-11.noarch.rpm is not installed epel-release-7-11.noarch.rpm | 15 kB 00:00 Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 Importing GPG key 0xF4A80EB5: Userid : "CentOS-7 Key (CentOS 7 Official Signing Key) <security@centos.org>" Fingerprint: 6341 ab27 53d7 8a78 a7c2 7bb1 24c6 a8a7 f4a8 0eb5 Package : centos-release-7-2.1511.el7.centos.2.10.x86_64 (@anaconda) From : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 Is this ok [y/N]: y Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : epel-release-7-11.noarch 1/1 Verifying : epel-release-7-11.noarch 1/1 Installed: epel-release.noarch 0:7-11 Complete! [root@localhost ~]# yum install redis Loaded plugins: fastestmirror, langpacks epel/x86_64/metalink | 9.4 kB 00:00 epel | 5.3 kB 00:00 (1/3): epel/x86_64/group_gz | 90 kB 00:00 (2/3): epel/x86_64/primary_db | 6.9 MB 00:02 (3/3): epel/x86_64/updateinfo | 1.0 MB 00:03 Loading mirror speeds from cached hostfile * base: ap.stykers.moe * epel: mirrors.yun-idc.com * extras: ap.stykers.moe * updates: mirror.lzu.edu.cn Resolving Dependencies --> Running transaction check ---> Package redis.x86_64 0:3.2.12-2.el7 will be installed --> Processing Dependency: libjemalloc.so.1()(64bit) for package: redis-3.2.12-2.el7.x86_64 --> Running transaction check ---> Package jemalloc.x86_64 0:3.6.0-1.el7 will be installed --> Finished Dependency Resolution Dependencies Resolved ================================================================================ Package Arch Version Repository Size ================================================================================ Installing: redis x86_64 3.2.12-2.el7 epel 544 k Installing for dependencies: jemalloc x86_64 3.6.0-1.el7 epel 105 k Transaction Summary ================================================================================ Install 1 Package (+1 Dependent package) Total download size: 648 k Installed size: 1.7 M Is this ok [y/d/N]: y Downloading packages: warning: /var/cache/yum/x86_64/7/epel/packages/redis-3.2.12-2.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID 352c64e5: NOKEY Public key for redis-3.2.12-2.el7.x86_64.rpm is not installed (1/2): redis-3.2.12-2.el7.x86_64.rpm | 544 kB 00:01 (2/2): jemalloc-3.6.0-1.el7.x86_64.rpm | 105 kB 00:02 -------------------------------------------------------------------------------- Total 211 kB/s | 648 kB 00:03 Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 Importing GPG key 0x352C64E5: Userid : "Fedora EPEL (7) <epel@fedoraproject.org>" Fingerprint: 91e9 7d7c 4a5e 96f1 7f3e 888f 6a2f aea2 352c 64e5 Package : epel-release-7-11.noarch (@extras) From : /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 Is this ok [y/N]: y Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : jemalloc-3.6.0-1.el7.x86_64 1/2 Installing : redis-3.2.12-2.el7.x86_64 2/2 Verifying : redis-3.2.12-2.el7.x86_64 1/2 Verifying : jemalloc-3.6.0-1.el7.x86_64 2/2 Installed: redis.x86_64 0:3.2.12-2.el7 Dependency Installed: jemalloc.x86_64 0:3.6.0-1.el7 Complete! [root@localhost ~]# systemctl start redis.service [root@localhost ~]# systemctl stop redis.service [root@localhost ~]# systemctl status redis.service ● redis.service - Redis persistent key-value database Loaded: loaded (/usr/lib/systemd/system/redis.service; disabled; vendor preset: disabled) Drop-In: /etc/systemd/system/redis.service.d └─limit.conf Active: inactive (dead) Jan 18 01:12:30 localhost.localdomain systemd[1]: Starting Redis persistent k... Jan 18 01:12:30 localhost.localdomain systemd[1]: Started Redis persistent ke... Jan 18 01:12:39 localhost.localdomain systemd[1]: Stopping Redis persistent k... Jan 18 01:12:40 localhost.localdomain systemd[1]: Stopped Redis persistent ke... Hint: Some lines were ellipsized, use -l to show in full. [root@localhost ~]# systemctl enable redis Created symlink from /etc/systemd/system/multi-user.target.wants/redis.service to /usr/lib/systemd/system/redis.service. [root@localhost ~]# firewall-cmd --zone=public --add-port=80/tcp --permanent success [root@localhost ~]# firewall-cmd --zone=public --add-port=6379/tcp --permanent success [root@localhost ~]# systemctl restart firewalld [root@localhost ~]# cd etc -bash: cd: etc: No such file or directory [root@localhost ~]# [root@localhost ~]# cd /etc [root@localhost etc]# vi redis.conf [root@localhost etc]# systemctl restart redis.service [root@localhost etc]# redis-cli -h 127.0.0.1 -p 6379 127.0.0.1:6379> auth 123456 OK 127.0.0.1:6379> set username ufo OK 127.0.0.1:6379> get username "ufo" 127.0.0.1:6379> exit
参考资料：https://www.cnblogs.com/hjw-zq/p/9778514.html
--END-- 2020年1月18日13点23分