day10 nfs服务，nginx负载均衡，定时任务
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==================nginx 负载均衡====================
实现nginx负载均衡的效果，并运用nfs服务共享目录，使所有nginx服务拥有共同的http目录
nginx安装：http://www.cnblogs.com/alwaysInMe/p/6924859.html
nfs安装：NFS 是Network File System的缩写，即网络文件系统。一种使用于分散式文件系统的协定。
===> 环境配置及软件安装
注：本次安装用的是centos7系统光盘自带的rpm文件进行安装，已提前将光盘镜像路径加载到了repo文件中。
[root@localhost ~]# iptables -F # 清除防火墙配置 [root@localhost ~]# systemctl stop firewalld # 关闭防火墙 [root@localhost ~]# setenforce 0 # 关闭策略组，临时
[root@localhost ~]# vim /etc/sysconfig/selinux # 文件中关闭策略组 [root@localhost ~]# systemctl status firewalld # 查看防火墙状态
[root@bogon ~]# yum -y install rpcbind nfs-utils # 安装rpcbind、nfs-utils。其中nfs依赖于rpcbind 软件包 rpcbind-0.2.0-32.el7.x86_64 已安装并且是最新版本 # 这里提示已经安装，不需要处理 软件包 1:nfs-utils-1.3.0-0.21.el7.x86_64 已安装并且是最新版本 无须任何处理
====> 文件配置
[root@bogon ~]# mkdir /share # 创建共享目录 [root@bogon ~]# vim /etc/exports # 设定nfs配置文件，如下：
/share *(rw,sync,fsid=0) #<输出目录> [客户端1 选项（访问权限,用户映射,其他）]
====> 启动服务
[root@bogon ~]# systemctl start nfs # 启动服务-这里演示的事二进制的 [root@bogon ~]# systemctl status nfs # 查看文件启动情况 ● nfs-server.service - NFS server and services Loaded: loaded (/usr/lib/systemd/system/nfs-server.service; disabled; vendor preset: disabled) Active: active (exited) since Thu 2017-06-01 03:32:51 PDT; 1min 6s ago Process: 11099 ExecStart=/usr/sbin/rpc.nfsd $RPCNFSDARGS (code=exited, status=0/SUCCESS) Process: 11098 ExecStartPre=/usr/sbin/exportfs -r (code=exited, status=0/SUCCESS) Main PID: 11099 (code=exited, status=0/SUCCESS) CGroup: /system.slice/nfs-server.service Jun 01 03:32:51 bogon systemd[1]: Starting NFS server and services... Jun 01 03:32:51 bogon systemd[1]: Started NFS server and services.
[root@bogon ~]# exportfs # 查看nfs服务所开放的文件夹及开放给谁
/share <world>
====> 测试功能
注：测试需要用另外一台linux系统进行挂载链接，所有测试的机器中需要安装nfs，但不需要启动，安装方法见前面。
[root@bogon ~]# mount 192.168.128.181:/share /opt/ # 将共享的文件挂载在/opt 上，如果没有这个目录，可以先使用mkdir命另创建这个文件夹 [root@bogon ~]# df # 查看是否挂载成功 文件系统 1K-块 已用 可用 已用% 挂载点 /dev/sda3 18555904 3797620 14758284 21% / devtmpfs 486144 0 486144 0% /dev tmpfs 500664 88 500576 1% /dev/shm tmpfs 500664 7224 493440 2% /run tmpfs 500664 0 500664 0% /sys/fs/cgroup /dev/sda1 303788 146768 157020 49% /boot tmpfs 100136 16 100120 1% /run/user/0 /dev/sr0 4227724 4227724 0 100% /media 192.168.128.181:/share 18555904 3797632 14758272 21% /opt
我这里一共用了四台电脑，重复以上操作，分别进行连接
下面进行nginx负载均衡文件的配置
注：我这里是先配置web服务器（工作的），测试没问题后再配置代理服务器（分配任务的）
[root@bogon ~]# vim /usr/local/nginx/conf/nginx.conf # 修改nginx配置文件，由于我用的是源码安装，所以我自定义了路径 /usr/local/nginx
1 #user nobody; 2 worker_processes 1; 3 4 #error_log logs/error.log; 5 #error_log logs/error.log notice; 6 #error_log logs/error.log info; 7 8 #pid logs/nginx.pid; 9 10 11 events { 12 worker_connections 1024; 13 } 14 15 16 http { 17 include mime.types; 18 default_type application/octet-stream; 19 20 log_format main \'$remote_addr - $remote_user [$time_local] "$request" \' 21 \'$status $body_bytes_sent "$http_referer" \' 22 \'"$http_user_agent" "$http_x_forwarded_for"\'; 23 # 日志功能 24 access_log logs/access.log main; 25 26 sendfile on; 27 tcp_nopush on; 28 29 #keepalive_timeout 0; 30 keepalive_timeout 65; 31 32 #gzip on; 33 34 server { 35 listen 8084; # 修改软件使用端口为 8084 36 server_name localhost; 37 38 #charset koi8-r; 39 40 #access_log logs/host.access.log main; 41 42 location / { 43 root /opt; # 修改默认的 html 文件路径 44 index index.html index.htm; 45 } 46 47 #error_page 404 /404.html; 48 49 # redirect server error pages to the static page /50x.html 50 # 51 error_page 500 502 503 504 /50x.html; 52 location = /50x.html { 53 root html; 54 } 55 56 # proxy the php scripts to Apache listening on 127.0.0.1:80 57 # 58 #location ~ \\.php$ { 59 # proxy_pass http://127.0.0.1; 60 #} 61 62 # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000 63 # 64 #location ~ \\.php$ { 65 # root html; 66 # fastcgi_pass 127.0.0.1:9000; 67 # fastcgi_index index.php; 68 # fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name; 69 # include fastcgi_params; 70 #} 71 72 # deny access to .htaccess files, if Apache\'s document root 73 # concurs with nginx\'s one 74 # 75 #location ~ /\\.ht { 76 # deny all; 77 #} 78 } 79 80 81 # another virtual host using mix of IP-, name-, and port-based configuration 82 # 83 #server { 84 # listen 8000; 85 # listen somename:8080; 86 # server_name somename alias another.alias; 87 88 # location / { 89 # root html; 90 # index index.html index.htm; 91 # } 92 #} 93 94 95 # HTTPS server 96 # 97 #server { 98 # listen 443 ssl; 99 # server_name localhost; 100 101 # ssl_certificate cert.pem; 102 # ssl_certificate_key cert.key; 103 104 # ssl_session_cache shared:SSL:1m; 105 # ssl_session_timeout 5m; 106 107 # ssl_ciphers HIGH:!aNULL:!MD5; 108 # ssl_prefer_server_ciphers on; 109 110 # location / { 111 # root html; 112 # index index.html index.htm; 113 # } 114 #} 115 116 }
[root@bogon ~]# /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf # 启动服务
成功！！！！！
其它三个重复以上配置，注意修改html存放的默认位置，上面的端口我改成了8084，这个地方改不改都行，只要记住了是多少就好了
下面修改代理服务器：同时在代理服务器上配置一个web服务器，原理是通过不同的配置文件打开相同的软件，实现端口不同从而同时工作
[root@bogon ~]# cd /usr/local/nginx/conf/ # 进入nginx的目录 [root@bogon conf]# ll 总用量 60 -rw-r--r--. 1 root root 1077 May 31 23:37 fastcgi.conf -rw-r--r--. 1 root root 1077 May 31 23:37 fastcgi.conf.default -rw-r--r--. 1 root root 1007 May 31 23:37 fastcgi_params -rw-r--r--. 1 root root 1007 May 31 23:37 fastcgi_params.default -rw-r--r--. 1 root root 2837 May 31 23:37 koi-utf -rw-r--r--. 1 root root 2223 May 31 23:37 koi-win -rw-r--r--. 1 root root 3957 May 31 23:37 mime.types -rw-r--r--. 1 root root 3957 May 31 23:37 mime.types.default -rw-r--r--. 1 root root 2656 May 31 23:37 nginx.conf -rw-r--r--. 1 root root 2656 May 31 23:37 nginx.conf.default -rw-r--r--. 1 root root 636 May 31 23:37 scgi_params -rw-r--r--. 1 root root 636 May 31 23:37 scgi_params.default -rw-r--r--. 1 root root 664 May 31 23:37 uwsgi_params -rw-r--r--. 1 root root 664 May 31 23:37 uwsgi_params.default -rw-r--r--. 1 root root 3610 May 31 23:37 win-utf [root@bogon conf]# cp nginx.conf web1.conf # 复制一份nginx的配置文件，用作web端
[root@bogon conf]# vim web1.conf # 修改web1的配置文件，如下，修改了端口以及默认html文件位置
1 #user nobody; 2 worker_processes 1; 3 4 error_log logs/error.log; 5 error_log logs/error.log notice; 6 error_log logs/error.log info; 7 8 #pid logs/nginx.pid; 9 10 11 events { 12 worker_connections 1024; 13 } 14 15 16 http { 17 include mime.types; 18 default_type application/octet-stream; 19 20 log_format main \'$remote_addr - $remote_user [$time_local] "$request" \' 21 \'$status $body_bytes_sent "$http_referer" \' 22 \'"$http_user_agent" "$http_x_forwarded_for"\'; 23 24 access_log logs/access.log main; 25 26 sendfile on; 27 #tcp_nopush on; 28 29 #keepalive_timeout 0; 30 keepalive_timeout 65; 31 32 #gzip on; 33 34 server { 35 listen 8081; # 修改端口为8081，防止与代理服务冲突 36 server_name localhost; 37 38 #charset koi8-r; 39 40 #access_log logs/host.access.log main; 41 42 location / { 43 root /share; # 修改html文件默认存放位置为 /share 保证一致性 44 index index.html index.htm; 45 } 46 47 #error_page 404 /404.html; 48 49 # redirect server error pages to the static page /50x.html 50 # 51 error_page 500 502 503 504 /50x.html; 52 location = /50x.html { 53 root html; 54 } 55 56 # proxy the PHP scripts to Apache listening on 127.0.0.1:80 57 # 58 #location ~ \\.php$ { 59 # proxy_pass http://127.0.0.1; 60 #} 61 62 # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000 63 # 64 #location ~ \\.php$ { 65 # root html; 66 # fastcgi_pass 127.0.0.1:9000; 67 # fastcgi_index index.php; 68 # fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name; 69 # include fastcgi_params; 70 #} 71 72 # deny access to .htaccess files, if Apache\'s document root 73 # concurs with nginx\'s one 74 # 75 #location ~ /\\.ht { 76 # deny all; 77 #} 78 } 79 80 81 # another virtual host using mix of IP-, name-, and port-based configuration 82 # 83 #server { 84 # listen 8000; 85 # listen somename:8080; 86 # server_name somename alias another.alias; 87 88 # location / { 89 # root html; 90 # index index.html index.htm; 91 # } 92 #} 93 94 95 # HTTPS server 96 # 97 #server { 98 # listen 443 ssl; 99 # server_name localhost; 100 101 # ssl_certificate cert.pem; 102 # ssl_certificate_key cert.key; 103 104 # ssl_session_cache shared:SSL:1m; 105 # ssl_session_timeout 5m; 106 107 # ssl_ciphers HIGH:!aNULL:!MD5; 108 # ssl_prefer_server_ciphers on; 109 110 # location / { 111 # root html; 112 # index index.html index.htm; 113 # } 114 #} 115 116 }
[root@bogon conf]# /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/web1.conf # 启动刚才的web服务，从 /usr/local/nginx/conf/web1.conf 读取配置文件
修改代理服务器配置
[root@bogon conf]# vim /usr/local/nginx/conf/nginx.conf # 配置内容如下
1 #user nobody; 2 worker_processes 1; 3 4 #error_log logs/error.log; 5 #error_log logs/error.log notice; 6 #error_log logs/error.log info; 7 8 #pid logs/nginx.pid; 9 10 11 events { 12 worker_connections 1024; 13 } 14 15 16 http { 17 include mime.types; 18 default_type application/octet-stream; 19 20 21 upstream myapp1 { 22 server 192.168.181:8081; 23 server 192.168.180:80; 24 server 192.168.183:80; 25 server 192.168.184:8084; 26 27 } 28 #log_format main \'$remote_addr - $remote_user [$time_local] "$request" \' 29 # \'$status $body_bytes_sent "$http_referer" \' 30 # \'"$http_user_agent" "$http_x_forwarded_for"\'; 31 32 #access_log logs/access.log main; 33 34 sendfile on; 35 #tcp_nopush on; 36 37 #keepalive_timeout 0; 38 keepalive_timeout 65; 39 40 #gzip on; 41 42 server { 43 listen 80; 44 45 location / { 46 proxy_pass http://myapp1; 47 } 48 49 #charset koi8-r; 50 51 #access_log logs/host.access.log main; 52 53 54 #error_page 404 /404.html; 55 56 # redirect server error pages to the static page /50x.html 57 # 58 error_page 500 502 503 504 /50x.html; 59 location = /50x.html { 60 root html; 61 } 62 63 # proxy the PHP scripts to Apache listening on 127.0.0.1:80 64 # 65 #location ~ \\.php$ { 66 # proxy_pass http://127.0.0.1; 67 #} 68 69 # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000 70 # 71 #location ~ \\.php$ { 72 # root html; 73 # fastcgi_pass 127.0.0.1:9000; 74 # fastcgi_index index.php; 75 # fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name; 76 # include fastcgi_params; 77 #} 78 79 # deny access to .htaccess files, if Apache\'s document root 80 # concurs with nginx\'s one 81 # 82 #location ~ /\\.ht { 83 # deny all; 84 #} 85 } 86 87 88 # another virtual host using mix of IP-, name-, and port-based configuration 89 # 90 #server { 91 # listen 8000; 92 # listen somename:8080; 93 # server_name somename alias another.alias; 94 95 # location / { 96 # root html; 97 # index index.html index.htm; 98 # } 99 #} 100 101 102 # HTTPS server 103 # 104 #server { 105 # listen 443 ssl; 106 # server_name localhost; 107 108 # ssl_certificate cert.pem; 109 # ssl_certificate_key cert.key; 110 111 # ssl_session_cache shared:SSL:1m; 112 # ssl_session_timeout 5m; 113 114 # ssl_ciphers HIGH:!aNULL:!MD5; 115 # ssl_prefer_server_ciphers on; 116 117 # location / { 118 # root html; 119 # index index.html index.htm; 120 # } 121 #} 122 123 }
修改的位置
Centos7搭建HAproxy+Nginx+NFS负载均衡实现高可用集群
EG:nginx反向代理两台web服务器,实现负载均衡 所有的web服务共享一台nfs的存储