Linux 下 jdk 安装以及redis安装

linux 下 jdk 安装

先下载jdk Linux版本

放到/usr/local/目录下

然后解压 tar -zxvf jdk压缩包

编辑配置文件，配置环境变量 vim /etc/profile

添加内容如下：

JAVA_HOME=/usr/java/jdk1.8.0_11

JRE_HOME=/usr/java/jdk1.8.0_11/jre

PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin

CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib

CLASSPATH=$JAVA_HOME/lib/

PATH=$PATH:$JAVA_HOME/bin

export PATH JAVA_HOME CLASSPATH

export JAVA_HOME=/usr/local/jdk1.8.0_11
export JRE_HOME=${JAVA_HOME}/jre
export JAVA_BIN=$JAVA_HOME/bin
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=$PATH:${JAVA_HOME}/bin:/usr/local/tomcat/bin
export NODE_HOME=/usr/local/src/node-v8.10.0-linux-x64/bin
export PATH=$NODE_HOME:$PATH

重启系统：shutdown -r now 或者 source /etc/profile  使配置文件立即生效

查看安装是否成功：

Java -version

javac

Linux下安装redis启动及开启外网访问

下面方法安装不方便，过程痛苦，容易出错，建议使用yum方式安装，推荐链接，亲测成功

https://www.cnblogs.com/hjw-zq/p/9778514.html

1、安装redis

第一步：下载redis安装包

wget http://download.redis.io/releases/redis-4.0.6.tar.gz

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[root@iZwz991stxdwj560bfmadtZ local]# wget http://download.redis.io/releases/redis-4.0.6.tar.gz --2017-12-13 12:35:12--  http://download.redis.io/releases/redis-4.0.6.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|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 1723533 (1.6M) [application/x-gzip] Saving to: ‘redis-4.0.6.tar.gz’   100%[==========================================================================================================>] 1,723,533    608KB/s   in 2.8s     2017-12-13 12:35:15 (608 KB/s) - ‘redis-4.0.6.tar.gz’ saved [1723533/1723533]

第二步：解压压缩包

tar -zxvf redis-4.0.6.tar.gz

1	[root@iZwz991stxdwj560bfmadtZ local]# tar -zxvf redis-4.0.6.tar.gz

第三步：yum安装gcc依赖

yum install gcc

1	[root@iZwz991stxdwj560bfmadtZ local]# yum install gcc

 

遇到选择直接选择y就行

第四步：跳转到redis解压目录下

cd redis-4.0.6

1	[root@iZwz991stxdwj560bfmadtZ local]# cd redis-4.0.6

 

第五步：编译安装

make MALLOC=libc

1	[root@iZwz991stxdwj560bfmadtZ redis-4.0.6]# make MALLOC=libc

 

将/usr/local/redis-4.0.6/src目录下的文件加到/usr/local/bin目录

cd src && make install

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[root@iZwz991stxdwj560bfmadtZ redis-4.0.6]# cd src && make install     CC Makefile.dep   Hint: It's a good idea to run 'make test' ;)       INSTALL install     INSTALL install     INSTALL install     INSTALL install     INSTALL install

 

第六步：测试是否安装成功 

先切换到redis src目录下

1	[root@iZwz991stxdwj560bfmadtZ redis-4.0.6]# cd src

 

1、直接启动redis

./redis-server

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[root@iZwz991stxdwj560bfmadtZ src]# ./redis-server 18685:C 13 Dec 12:56:12.507 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo 18685:C 13 Dec 12:56:12.507 # Redis version=4.0.6, bits=64, commit=00000000, modified=0, pid=18685, just started 18685:C 13 Dec 12:56:12.507 # Warning: no config file specified, using the default config. In order to specify a config file use ./redis-server /path/to/redis.conf                 _._                                                             _.-``__ ''-._                                                   _.-``    `.  `_.  ''-._           Redis 4.0.6 (00000000/0) 64 bit   .-`` .-```.  ```\/    _.,_ ''-._                                    (    '      ,       .-`  | `,    )     Running in standalone mode  |`-._`-...-` __...-.``-._|'` _.-'|     Port: 6379  |    `-._   `._    /     _.-'    |     PID: 18685   `-._    `-._  `-./  _.-'    _.-'                                    |`-._`-._    `-.__.-'    _.-'_.-'|                                   |    `-._`-._        _.-'_.-'    |           http://redis.io          `-._    `-._`-.__.-'_.-'    _.-'                                    |`-._`-._    `-.__.-'    _.-'_.-'|                                   |    `-._`-._        _.-'_.-'    |                                    `-._    `-._`-.__.-'_.-'    _.-'                                         `-._    `-.__.-'    _.-'                                                 `-._        _.-'                                                         `-.__.-'                                                 18685:M 13 Dec 12:56:12.508 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128. 18685:M 13 Dec 12:56:12.508 # Server initialized 18685:M 13 Dec 12:56:12.508 # 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. 18685:M 13 Dec 12:56:12.508 # 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. 18685:M 13 Dec 12:56:12.508 * Ready to accept connections

 

如上图：redis启动成功，但是这种启动方式需要一直打开窗口，不能进行其他操作，不太方便。

按 ctrl + c可以关闭窗口。　

2、以后台进程方式启动redis

第一步：修改redis.conf文件

将daemonize no　　

修改为daemonize yes

第二步：指定redis.conf文件启动

1	./redis-server /usr/local/redis-4.0.6/redis.conf   ||     ./src/redis-server redis.conf

 

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[root@iZwz991stxdwj560bfmadtZ src]# ./redis-server /usr/local/redis-4.0.6/redis.conf 18713:C 13 Dec 13:07:41.109 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo 18713:C 13 Dec 13:07:41.109 # Redis version=4.0.6, bits=64, commit=00000000, modified=0, pid=18713, just started 18713:C 13 Dec 13:07:41.109 # Configuration loaded

第三步：关闭redis进程

首先使用ps -aux | grep redis查看redis进程

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[root@iZwz991stxdwj560bfmadtZ src]# ps -aux | grep redis root     18714  0.0  0.1 141752  2008 ?        Ssl  13:07   0:00 ./redis-server 127.0.0.1:6379 root     18719  0.0  0.0 112644   968 pts/0    R+   13:09   0:00 grep --color=auto redis

测试是否可以远程连接 重启窗口

1	./redis-cli -h 127.0.0.1 -p 6379

成功并进行如下测试

使用kill命令杀死进程

1	[root@iZwz991stxdwj560bfmadtZ src]# kill -9 18714

第七步：设置redis开机自启动

1、在/etc目录下新建redis目录

mkdir redis

1	[root@iZwz991stxdwj560bfmadtZ etc]# mkdir redis

 

2、将/usr/local/redis-4.0.6/redis.conf 文件复制一份到/etc/redis目录下，并命名为6379.conf

1	[root@iZwz991stxdwj560bfmadtZ redis]# cp /usr/local/redis-4.0.6/redis.conf /etc/redis/6379.conf

 

3、将redis的启动脚本复制一份放到/etc/init.d目录下

1	[root@iZwz991stxdwj560bfmadtZ init.d]# cp /usr/local/redis-4.0.6/utils/redis_init_script /etc/init.d/redisd

 

4、设置redis开机自启动

先切换到/etc/init.d目录下

然后执行自启命令

1 2	[root@iZwz991stxdwj560bfmadtZ init.d]# chkconfig redisd on service redisd does not support chkconfig　（这是结果）

看结果是redisd不支持chkconfig

解决方法：

使用vim编辑redisd文件，在第一行加入如下两行注释，保存退出

1 2	# chkconfig:   2345 90 10 # description:  Redis is a persistent key-value database

注释的意思是，redis服务必须在运行级2，3，4，5下被启动或关闭，启动的优先级是90，关闭的优先级是10。

 

再次执行开机自启命令，成功

1	[root@iZwz991stxdwj560bfmadtZ init.d]# chkconfig redisd on

现在可以直接已服务的形式启动和关闭redis了

启动：

service redisd start

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[root@izwz991stxdwj560bfmadtz ~]# service redisd start Starting Redis server... 2288:C 13 Dec 13:51:38.087 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo 2288:C 13 Dec 13:51:38.087 # Redis version=4.0.6, bits=64, commit=00000000, modified=0, pid=2288, just started 2288:C 13 Dec 13:51:38.087 # Configuration loaded

关闭：

service redisd stop

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[root@izwz991stxdwj560bfmadtz ~]# service redisd stop Stopping ... Redis stopped

 

3、redis开启远程外网访问：

1. 检查是否被防火墙挡住-打开iptables文件

Vi /etc/sysconfig/iptables

查看文件是否有：-A INPUT -p tcp -m tcp --dport 6379 -j ACCEPT

允许6379(redis默认端口)端口访问。

1. 检查 /etc/redis/6379.conf文件

Vi /etc/redis/6379.conf

将其默认的bind 127.0.0.1改为0.0.0.0(代表不做限制)

这样外网就能访问了

 

4、redis设置密码：

 

#requirepass foobared去掉注释，foobared改为自己的密码

我在这里改为123456 为例：

requirepass 123456

然后保存，重启服务