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# 一、前言
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#FastHT
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## 一、前言
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FastDHT解决FastDFS重复文件上传,不支持重复文件去重的造成磁盘资源浪费的痛点。
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FastDHT是分布式哈希系统(DHT),使用BerkeleyDB做数据存储,使用libevent做网络IO处理。依赖于libfastcommon。
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# 二、安装
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## 1、基本环境:
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## 二、安装
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### 1、基本环境:
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CentOS7、libfastcommon、Berkeley、FastDHT
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## 2、安装前需要的环境gcc
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### 2、安装前需要的环境gcc
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```
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yum install make cmake gcc gcc-c++
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cd /usr/local/src
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```
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### ①安装libfastcommon (安装FastDFS应该已经装了。无需重复安装)
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#### ①安装libfastcommon (安装FastDFS应该已经装了。无需重复安装)
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```
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unzip libfastcommon-master.zip
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cd libfastcommon-master
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./make.sh && ./make.sh install
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```
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### ②安装 Berkeley DB
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#### ②安装 Berkeley DB
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```
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wget http://download.oracle.com/berkeley-db/db-6.2.32.tar.gz
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cd /usr/local/src/db-6.2.32/build_unix/
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... | ... | @@ -26,7 +26,7 @@ chmod 777 ../dist/configure |
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make && make install
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```
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### ③安装fastDHT
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#### ③安装fastDHT
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```
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cd /usr/local/src/
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git clone https://github.com/happyfish100/fastdht.git --depth 1
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... | ... | @@ -35,37 +35,33 @@ cd fastdht |
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./make.sh && ./make.sh install
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```
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最后会在/usr/local/bin生成安装后的文件,在/etc/fdht下生成配置文件。
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# 二、环境配置
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## 1、创建目录
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## 二、环境配置
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### 1、创建目录
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```
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mkdir /fastdht
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```
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## 2、修改fdhtd.conf文件
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### 2、修改fdhtd.conf文件
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```
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vim /etc/fdht/fdhtd.conf
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port=11411
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base_path=/fastdht
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#include /etc/fdht/fdht_servers.conf
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```
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## 3、修改fdht_servers.conf文件
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### 3、修改fdht_servers.conf文件
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```
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vim /etc/fdht/fdht_servers.conf
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group_count = 2 #数字可自定义
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group0 = 192.168.224.223:11411
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group1 = 192.168.224.223:11411
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```
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## 4、修改fdht_client.conf文件
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### 4、修改fdht_client.conf文件
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```
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vim /etc/fdht/fdht_client.conf
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keep_alive=1 #本选项关联 storaged.conf文件
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base_path= /fastdht
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#include /etc/fdht/fdht_servers.conf #注意:#和include之间没有空格)
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```
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## 5、修改storage.conf文件
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### 5、修改storage.conf文件
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```
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vim /etc/fdfs/storage.conf
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#是否检测上传文件已经存在。如果已经存在,则不存在文件内容,建立一个索引链接以节省磁盘空间
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... | ... | @@ -110,7 +106,7 @@ fdhtd /etc/fdht/fdhtd.conf |
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#执行命令,使之生效:
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chmod +x /etc/rc.local
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```
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## 5、验证
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### 6、验证
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```
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#多次执行命令来上传同一个文件:
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fdfs_upload_file /etc/fdfs/client.conf /usr/local/src/nginx-1.15.4.tar.gz
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... | ... | |