02 . 分布式存储之FastDFS 高可用集群部署

单节点部署和原理请看上一篇文章

https://www.cnblogs.com/you-men/p/12863555.html

环境

[Fastdfs-Server]
	系统 = CentOS7.3
	软件 = 
  	fastdfs-nginx-module_v1.16.tar.gz
		FastDFS_v5.05.tar.gz
		libfastcommon-master.zip
		nginx-1.8.0.tar.gz
		ngx_cache_purge-2.3.tar.gz

节点名	IP	软件版本	硬件	网络	说明
Tracker-233	192.168.43.233	list 里面都有	2C4G	Nat，内网	测试环境
Tracker2-234	192.168.43.234	list 里面都有	2C4G	Nat，内网	测试环境
Group1-60	192.168.43.60	list 里面都有	2C4G	Nat，内网	测试环境
Group1-97	192.168.43.97	list 里面都有	2C4G	Nat，内网	测试环境
Group2-24	192.168.43.24	list 里面都有	2C4G	Nat，内网	测试环境
Group2-128	192.168.43.128	list 里面都有	2C4G	Nat，内网	测试环境
Nginx1-220	192.168.43.220	list 里面都有	2C4G	Nat，内网	测试环境
Nginx2-53	192.168.43.53	list 里面都有	2C4G	Nat，内网	测试环境

安装相关工具和依赖

所有机器

yum -y install  unzip gcc-c++ perl make libstdc++-devel cmake gcc gcc-c++

安装tracker

解压编译安装libfastcommon

# 安装libfastcommon, fastdfs5.X 取消了对libevent的依赖,添加了对libfastcommon的依赖.
wget https://github.com/happyfish100/libfastcommon/archive/master.zip

unzip libfastcommon-master.zip 
cd libfastcommon-master/
./make.sh 
./make.sh install 

下载安装FastDFS

tar xvf FastDFS_v5.05.tar.gz -C /usr/local/fast/
cd /usr/local/fast/FastDFS/
./make.sh && ./make.sh install

# 创建软链接
ln -s /usr/lib64/libfastcommon.so /usr/local/lib/libfastcommon.so
ln -s /usr/lib64/libfastcommon.so /usr/lib/libfastcommon.so
ln -s /usr/lib64/libfdfsclient.so /usr/local/lib/libfdfsclient.so
ln -s /usr/lib64/libfdfsclient.so /usr/lib/libfdfsclient.so

修改fastdfs配置文件

修改fastdfs服务脚本bin目录为/usr/local/bin,但是实际我们安装在了/usr/bin/下面。所以我们需要修改FastDFS配置文件中的路径，也就是需要修改俩 个配置文件： 命令：vim /etc/init.d/fdfs_storaged 然后输入全局替换命令：%s+/usr/local/bin+/usr/bin并按回车即可完成替换

修改tracker.conf

第一处：base_path，将默认的路径修改为/fastdfs/tracker。第二处：store_lookup，该值默认是2（即负载均衡策略），现在把它修改为0（即轮询策略，修改成这样方便一会儿我们进行测试，当然，最终还是要改回到2的。如果值为1的话表明要始终向某个group进行上传下载操作，这时下图中的"store_group=group2"才会起作用，如果值是0或2，则

mkdir -p /fastdfs/tracker
cd /etc/fdfs
cp tracker.conf.sample tracker.conf
vim /etc/fdfs/tracker.conf
base_path=/fastdfs/tracker
store_lookup=0

# 然后将这个配置拷贝到另一台tracker上

启动tracker

# 启动tracker
fdfs_trackerd /etc/fdfs/tracker.conf start
or 
service fdfs_trackerd start

# 验证端口
lsof -i:22122
COMMAND     PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
fdfs_trac 15222 root    5u  IPv4  49284      0t0  TCP *:22122 (LISTEN)
fdfs_trac 15222 root   18u  IPv4  49304      0t0  TCP tracker1:22122->192.168.43.60:63056 (ESTABLISHED)            

部署Storage

配置storage.conf

mkdir -p /fastdfs/storage
vim /etc/fdfs/storage.conf
base_path=/fastdfs/storage
store_path0=/fastdfs/storage
store_path_count=1
disabled=false
tracker_server=192.168.43.234:22122
tracker_server=192.168.43.233:22122
group_name=group1
# 分配的group1可以直接将此文件拷贝过去,group2修改下group_name就行了

启动storage

service fdfs_trackerd start


# 验证端口
lsof -i:23000
COMMAND     PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
fdfs_stor 14105 root    5u  IPv4  44719      0t0  TCP *:inovaport1 (LISTEN)
fdfs_stor 14105 root   20u  IPv4  45629      0t0  TCP group1:inovaport1->192.168.43.60:44823 (ESTABLISHED)
    
    
fdfs_monitor /etc/fdfs/storage.conf |grep ACTIVE
[2020-07-03 20:35:09] DEBUG - base_path=/fastdfs/storage, connect_timeout=30, network_timeout=60, tracker_server_count=2, anti_steal_token=0, anti_steal_secret_key length=0, use_connection_pool=0, g_connection_pool_max_idle_time=3600s, use_storage_id=0, storage server id count: 0

		ip_addr = 192.168.43.24  ACTIVE
		ip_addr = 192.168.43.60 (group1)  ACTIVE
		ip_addr = 192.168.43.128  ACTIVE
		ip_addr = 192.168.43.97  ACTIVE    

验证服务可用性

# 测试下是否启动成功，我们尝试上传文件，从/root/目录上传一张图片试试
# 修改client客户端上传配置
vim /etc/fdfs/client.conf
base_path=/fastdfs/tracker
tracker_server=192.168.43.233:22122
tracker_server=192.168.43.234:22122

fdfs_upload_file /etc/fdfs/client.conf /root/1.png 
group2/M00/00/00/wKgrgF7_KL-AKIsEAAztU10n3gA362.png

# 我们去下面目录可以看到有这个文件
ls /fastdfs/storage/data/00/00/
wKgrgF7_KL-AKIsEAAztU10n3gA362.png

# 或者使用下面这种

fdfs_test /etc/fdfs/client.conf upload /tmp/test.jpg 

example file url: http://192.168.171.140/group1/M00/00/00/wKirjF64N2CAZZODAAGgIaqSzTc877_big.jpg
        
# 出现最后的一个url说明上传成功   

# M00代表磁盘目录，如果电脑只有一个磁盘那就只有M00， 如果有多个磁盘，那就M01、M02...等等。
# 00/00代表磁盘上的两级目录，每级目录下是从00到FF共256个文件夹，两级就是256*256个

配置Nginx

# 安装编译工具和依赖
yum install gcc-c++ pcre pcre-devel zlib zlib-devel openssl openssl-devel

# 下载nginx安装包
wget http://nginx.org/download/nginx-1.14.0.tar.gz

# 解压安装包
tar xvf nginx-1.14.0.tar.gz

# 部署Nginx的fastdfs模块
tar xvf fastdfs-nginx-module_v1.16.tar.gz -C /usr/local/fast/

# 修改一下配置文件
# 去掉local目录
vim /usr/local/fast/fastdfs-nginx-module/src/config 
CORE_INCS="$CORE_INCS /usr/include/fastdfs /usr/include/fastcommon/"
cd /usr/local/fast/fastdfs-nginx-module/src/
./configure --add-module=/usr/local/fast/fastdfs-nginx-module/src/
make && make install 

cp /usr/local/fast/fastdfs-nginx-module/src/mod_fastdfs.conf /etc/fdfs/

vim /etc/fdfs/mod_fastdfs.conf
connect_timeout=12
tracker_server=192.168.43.233:22122
tracker_server=192.168.43.234:22122
url_have_group_name = true 
# 是否允许从地址栏进行访问
store_path0=/fastdfs/storage
group_name=group1
# group2注意修改此处
group_count = 2

[group1]
group_name=group1
storage_server_port=23000
store_path_count=1
store_path0=/fastdfs/storage

[group2]
group_name=group2
storage_server_port=23000
store_path_count=1
store_path0=/fastdfs/storage


cp /usr/local/fast/FastDFS/conf/http.conf /etc/fdfs
cp /usr/local/fast/FastDFS/conf/mime.types /etc/fdfs/
ln -s /fastdfs/storage/data/ /fastdfs/storage/data/M00

vim /usr/local/nginx/conf/nginx.conf
listen       8888;
server_name  localhost;
location ~/group([0-9])/M00 {
    ngx_fastdfs_module;
}

systemctl reload nginx

# 我们再来上传一下文件
fdfs_upload_file /etc/fdfs/client.conf /root/1.png 
group1/M00/00/00/wKgrGF7_LISASYwWAAztU10n3gA811.png

# 浏览器访问

配置tracker反向代理

我们在两个跟踪器上安装nginx,目的是使用统一的一个IP地址对外提供服务

安装nginx

tar xvf ngx_cache_purge-2.3.tar.gz -C /usr/local/fast

cd /usr/local/nginx-1.8.0/
./configure --add-module=/usr/local/fast/ngx_cache_purge-2.3
make && make install

配置nginx

mkdir -p /fastdfs/cache/nginx/proxy_cache
mkdir -p /fastdfs/cache/nginx/proxy_cache/tmp
cat /usr/local/nginx/conf/nginx.conf
worker_processes  1;
events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;
    tcp_nopush      on;
    keepalive_timeout  65;


# 设置缓存
server_names_hash_bucket_size 128;
client_header_buffer_size 32k;
large_client_header_buffers 4 32k;
client_max_body_size 300m;
proxy_redirect off;
proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_connect_timeout 90;
proxy_send_timeout 90;
proxy_read_timeout 90;
proxy_buffer_size 16k;
proxy_buffers 4 64k;
proxy_busy_buffers_size 128k;
proxy_temp_file_write_size 128k;
proxy_cache_path /fastdfs/cache/nginx/proxy_cache levels=1:2
keys_zone=http-cache:200m max_size=1g inactive=30d;
proxy_temp_path /fastdfs/cache/nginx/proxy_cache/tmp;

# group1的服务设置
upstream fdfs_group1 {
    server 192.168.43.60:8888 weight=1 max_fails=2 fail_timeout=30s;
    server 192.168.43.24:8888 weight=1 max_fails=2 fail_timeout=30s;
}

upstream fdfs_group2 {
    server 192.168.43.97:8888 weight=1 max_fails=2 fail_timeout=30s;
    server 192.168.43.128:8888 weight=1 max_fails=2 fail_timeout=30s;
}

    server {
        listen       80;
        server_name  localhost;
	location /group1/M00 {
	    proxy_next_upstream http_502 http_504 error timeout invalid_header;
	    proxy_cache http-cache;
      	    proxy_cache_valid 200 304 12h;
	    proxy_cache_key $uri$is_args$args;
	    proxy_pass http://fdfs_group1;
	    expires 30d;
        }

	location /group2/M00 {
	    proxy_next_upstream http_502 http_504 error timeout invalid_header;
	    proxy_cache http-cache;
            proxy_cache_valid 200 304 12h;
            proxy_cache_key $uri$is_args$args;
	    proxy_pass http://fdfs_group2;
	    expires 30d;
        }

	location ~/purge(/.*) {
	    allow 127.0.0.1;
	    allow 192.168.43.0/24;
	    deny all;
	    proxy_cache_purge http-cache $1$is_args$args;
        }

	error_page 500 502 503 504 /50x.html;
	    location = /50x.html {
	    root html;
	}
 
        location / {
	    root html;
	    index index.html index.htm;
        }
    }
}

启动验证服务

/usr/local/nginx/sbin/nginx
lsof -i:80
COMMAND   PID   USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
nginx   18152   root    6u  IPv4  64547      0t0  TCP *:http (LISTEN)
nginx   18153 nobody    6u  IPv4  64547      0t0  TCP *:http (LISTEN)
  
  
# 上传文件测试负载均衡
[root@tracker1 ~]# fdfs_upload_file /etc/fdfs/client.conf /root/1.png 
group2/M00/00/00/wKgrYV7_LtKAVzpbAAztU10n3gA079.png
[root@tracker1 ~]# fdfs_upload_file /etc/fdfs/client.conf /root/1.png 
group1/M00/00/00/wKgrPF7_LtOACpZhAAztU10n3gA410.png
[root@tracker1 ~]# fdfs_upload_file /etc/fdfs/client.conf /root/1.png 
group2/M00/00/00/wKgrgF7_LtWAQfW7AAztU10n3gA673.png
[root@tracker1 ~]# fdfs_upload_file /etc/fdfs/client.conf /root/1.png 
group1/M00/00/00/wKgrGF7_LtWAaML9AAztU10n3gA712.png

配置Nginx反向代理

安装nginx

rpm -ivh nginx-1.16.0-1.el7.ngx.x86_64.rpm 

配置nginx

添加负载均衡 fastdfs_tracker

nginx.conf

cat /etc/nginx/nginx.conf 
user  nginx;
worker_processes  1;
error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;

events {
    worker_connections  1024;
}

http {
upstream fastdfs_tracker {
    server 192.168.43.234:80 weight=1 max_fails=2 fail_timeout=30s;
    server 192.168.43.233:80 weight=1 max_fails=2 fail_timeout=30s;
}
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;
    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';
    access_log  /var/log/nginx/access.log  main;
    sendfile        on;
    #tcp_nopush     on;
    keepalive_timeout  65;
    #gzip  on;
    include /etc/nginx/conf.d/*.conf;
}

添加location并且匹配规则路径当中有fastdfs

default.conf

cat /etc/nginx/conf.d/default.conf 
server {
    listen       80;
    server_name  localhost;
    location / {
        root   /usr/share/nginx/html;
        index  index.html index.htm;
    }

    location /fastdfs {
	root html;
	index index.html index.htm;
	proxy_pass http://fastdfs_tracker/;
	proxy_set_header Host $http_host;
	proxy_set_header Cookie $http_cookie;
	proxy_set_header X-Real-IP $remote_addr;
	proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
	proxy_set_header X-Forwarded-Proto $scheme;
	client_max_body_size 300m;
    }
    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }
}

启动验证nginx

systemctl start nginx

fdfs_upload_file /etc/fdfs/client.conf /root/1.png 
group2/M00/00/00/wKgrYV7_MB-AQE_wAAztU10n3gA850.png

配置keepalived高可用

安装keepalived

yum -y install keepalived

配置keepalived

主机配置

cat keepalived.conf 
global_defs {
   router_id nginx_master
}


vrrp_script check_nginx {
	script "/etc/keepalived/check_nginx.sh"
	interval 5
}

vrrp_instance VI_1 {
    state BACKUP
    nopreempt				
    interface ens33	
    virtual_router_id 50	
    priority 80	
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }

    virtual_ipaddress {
        192.168.43.251
    }

    track_script {
	check_nginx
    }
}

从机配置

cat keepalived.conf 
global_defs {
   router_id nginx_slave
}

vrrp_script check_nginx {
	script "/etc/keepalived/check_nginx.sh"
	interval 5
}

vrrp_instance VI_1 {
    state BACKUP
    nopreempt				
    interface ens32	
    virtual_router_id 50	
    priority 100	
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }

    virtual_ipaddress {
        192.168.43.251
    }

    track_script {
	check_nginx
    }
}

check_nginx.sh

cat /etc/keepalived/check_nginx.sh 
#!/bin/bash
curl -I http://localhost &>/dev/null

if [ $? -ne 0 ];then
    systemctl stop keepalived
fi
chmod +x /etc/keepalived/check_nginx.sh 

启动并验证高可用

[root@nginx2 ~]# ip a
1: lo:  mtu 65536 qdisc noqueue state UNKNOWN qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
2: ens32:  mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:4b:e9:6e brd ff:ff:ff:ff:ff:ff
    inet 192.168.43.53/24 brd 192.168.43.255 scope global dynamic ens32
       valid_lft 2647sec preferred_lft 2647sec
    inet 192.168.43.251/32 scope global ens32
       valid_lft forever preferred_lft forever
       
systemctl stop nginx

# 我们切换到另一台机器,可以看到vip自动切换了
[root@nginx1 ~]# ip a
1: lo:  mtu 65536 qdisc noqueue state UNKNOWN qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
2: ens32:  mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:17:4a:03 brd ff:ff:ff:ff:ff:ff
    inet 192.168.43.220/24 brd 192.168.43.255 scope global dynamic ens32
       valid_lft 2882sec preferred_lft 2882sec
    inet 192.168.43.251/32 scope global ens32
       valid_lft forever preferred_lft forever

浏览器访问

我们可以看到即使nginx宕机一台,也不影响服务的可用性