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永中文檔在線轉(zhuǎn)換預(yù)覽雙活實現(xiàn)方案

永中文檔在線轉(zhuǎn)換預(yù)覽服務(wù) 是永中軟件股份有限公司基于十多年核心技術(shù)積累、面向移動互聯(lián)領(lǐng)域推出的一款文檔處理軟件。永中采用自主可控核心技術(shù)，具備快速技術(shù)和服務(wù)響應(yīng)能力，把文檔原樣輸出為 HTML，圖片等，即點即得、無需下載、保護(hù)文檔隱私，快速高效，輕松實現(xiàn)文檔在線安全閱讀。?

實現(xiàn)目標(biāo)

通過nginx實現(xiàn)業(yè)務(wù)fcsserver負(fù)載均衡，后端可以動態(tài)擴(kuò)展應(yīng)用服務(wù)器
nginx通過keepalived實現(xiàn)高可用，解決單點故障
通過keepalived實現(xiàn)nginx雙活配置，解決nginx主備資源使用率50%問題
通過dns輪詢解析域名到雙活vip，達(dá)到負(fù)載均衡效果
后期nginx達(dá)到瓶頸應(yīng)考慮lvs+keepalived+nginx架構(gòu)，動態(tài)擴(kuò)展nginx服務(wù)器

環(huán)境準(zhǔn)備

服務(wù)器可以連通外網(wǎng)或者有內(nèi)網(wǎng)yum源服務(wù)器，本次實驗服務(wù)器可連通外網(wǎng)
nginx01和nginx02服務(wù)器需要在同一網(wǎng)段的網(wǎng)絡(luò)內(nèi)
保證各服務(wù)器之前網(wǎng)絡(luò)互通
保證服務(wù)器的防火墻和selinux關(guān)閉
必須對外提供域名訪問，否則只能使用其中一個vip
內(nèi)網(wǎng)部署DNS服務(wù)器，模擬DNS輪詢解析

1、網(wǎng)絡(luò)架構(gòu)

2、實驗服務(wù)器分布

主機(jī)	ip	操作系統(tǒng)	軟件	端口	vip
nginx01	192.168.56.101	Centos7.6	nginx keepalived	80	192.168.56.200
nginx02	192.168.56.106	Centos7.6	nginx keepalived	80	192.168.56.201
fcs01	192.168.56.101	Centos7.6	tomcat	8080
fcs02	192.168.56.106	Centos7.6	tomcat	8080
共享存儲	192.168.56.108	Centos7.6	nfs
緩存	192.168.56.108	Centos7.6	redis	6379
內(nèi)部DNS	192.168.56.108	Centos7.6	bind	53

3、redis

部署服務(wù)器：192.168.56.108

3.1 配置redis

/etc/redis.conf

# 監(jiān)聽地址
bind 0.0.0.0
# 認(rèn)證密碼
requirepass yozosoft

3.2 啟動redis

systemctl enable redis --now && systemctl status redis

4、nfs

4.1 配置nfs

192.168.56.108（服務(wù)端）

# 創(chuàng)建存儲目錄
mkdir -p /opt/yozo/data
# 修改權(quán)限
chown -R nfsnobody.nfsnobody /opt/yozo/data
# 修改配置文件
vim /etc/exports
	/opt/yozo/data 192.168.56.0/24(rw,sync,all_squash)

192.168.56.101/192.168.56.106（客戶端）

# 創(chuàng)建掛載點
mkdir -p /opt/yozo/data
# 掛載nfs共享目錄
mount -t nfs 192.168.56.108:/opt/yozo/data /opt/yozo/data

4.2 啟動nfs

systemctl enable rpcbind nfs --now && systemctl status rpcbind nfs

5、fcsserver

部署服務(wù)器：

192.168.56.101（fcsserver01）

192.168.56.106（fcsserver02）

5.1 部署fcs

以tomcat為中間件，本次實驗fcs安裝目錄

/opt/yozo/fcsserver/webapps/fcsserver，/opt/yozo/fcsserver為解壓后的tomcat

部署項目包

mkdir opt/yozo/fcsserver/webapps/fcsserver -p
unzip fcscloud.war -d opt/yozo/fcsserver/webapps/fcsserver

修改fcsserver配置文件

# /opt/yozo/fcsserver/webapps/fcsserver/WEB-INF/classes/config.properties
inputDir=/opt/yozo/data/fcsdata/input	# 必須指定掛載共享存儲目錄的
outputDir=/opt/yozo/data/fcsdata/output
# 如果不提供域名，就只能配置其中一個vip；如果配置為域名，則緩存后，通過vip和fcsserver的ip將不能訪問轉(zhuǎn)換的緩存文件
viewDomain=http://www.fcsserver.com/fcsserver/

# /opt/yozo/fcsserver/webapps/fcsserver/WEB-INF/classes/application.yml
cache:#采用哪種緩存數(shù)據(jù)方式
    type: redis                     #local,redis,mysql(local模式只適用于單機(jī),集群部署不支持)
  redis:
    enable: true                    #redis開關(guān)(預(yù)覽設(shè)置權(quán)限時需要使用redis,并發(fā)和異步waitting機(jī)制使用redis,必開)
 redis:
    database: 1 # Redis數(shù)據(jù)庫索引（默認(rèn)為0）
    timeout: 10000 #設(shè)置客戶端超時時間，單位是毫秒，默認(rèn)為2000
    password: yozosoft #密碼
    #單機(jī)版
    host: 192.168.56.108
    port: 6379

# /opt/yozo/fcsserver/webapps/fcsserver/WEB-INF/classes/
<property name="LOG_HOME">../logs</property>

5.2 配置fcs系統(tǒng)服務(wù)

配置fcsserver.service

# cat /usr/lib/systemd/system/fcsserver.service
[Unit]
Description=fcsserver Service.
After=network.target
[Service]
Type=forking
Environment="PATH=/opt/yozo/jdk-8u251-amd64/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin"
WorkingDirectory=/opt/yozo/fcsserver/bin
ExecStart=/opt/yozo/fcsserver/bin/startup.sh
Restart=always
PrivateTmp=true
# 可以指定相關(guān)用戶啟動fcsserver
# User=yozo
# Group=yozo
LimitNOFILE=65536
[Install]
WantedBy=multi-user.target

如果以普通用戶啟動，需要將tomcat目錄屬主屬組設(shè)置成相應(yīng)賬戶

# 此次實驗以yozo用戶啟動
chown -R yozo. /opt/yozo/fcsserver

5.3 啟動fcs

systemctl enable fcsserver --now && systemctl status fcsserver

6、nginx

部署服務(wù)器：

192.168.56.101（nginx01）

192.168.56.106（nginx02）

6.1 配置nginx

/etc/nginx/conf.d/fcsserver.conf配置

server {
    ....
    location ~ /fcsserver {
        add_header Cache-Control private,no-store,max-age=0,no-cache,must-revalidate,post-check=0,pre-check=0;
        proxy_redirect off;
        proxy_set_header Host $http_host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded_Proto "http";
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_request_buffering off;
        proxy_read_timeout 7200;
        proxy_send_timeout 7200;
        proxy_pass http://fcsserver;
    }
   ....
}
upstream fcsserver {
    server 192.168.56.101:8080 fail_timeout=60s;
    server 192.168.56.106:8080 fail_timeout=60s;
    keepalive 256;
}

6.2 啟動nginx

systemctl enable nginx --now && systemctl status nginx

7、keepalived

部署服務(wù)器：

192.168.56.101（nginx01）

192.168.56.106（nginx02）

7.1 配置keepalived

7.1.1 nginx01配置

/etc/keepalived/keepalived.conf

! Configuration File for keepalived
global_defs {
   router_id proxy1
}
vrrp_script chk_nginx {
  script "/etc/keepalived/check_nginx.sh"
  interval 2
  weight 20
  fall 3
  rise 2
}
vrrp_instance VI_1 {
    state MASTER
    interface enp0s3
    virtual_router_id 51
    priority 100                           
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.56.200                     
    }
    track_script {
        chk_nginx
    }
}
vrrp_instance VI_2 {
    state BACKUP
    interface enp0s3
    virtual_router_id 52
    priority 90
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.56.201                     
    }
    track_script {
        chk_nginx
    }
}

7.1.2 nginx02配置

# 備份keepalived.conf
mv /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.confbak

/etc/keepalived/keepalived.conf

! Configuration File for keepalived
global_defs {
   router_id proxy2
}
vrrp_script chk_nginx {
  script "/etc/keepalived/check_nginx.sh"
  interval 2
  weight 20
  fall 3
  rise 2
}
vrrp_instance VI_1 {
    state BACKUP
    interface enp0s8
    virtual_router_id 51
    priority 90
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.56.200
    }
    track_script {
        chk_nginx
    }
}
vrrp_instance VI_2 {
    state MASTER
    interface enp0s8
    virtual_router_id 52
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.56.201
    }
    track_script {
        chk_nginx
    }
}

雙機(jī)/etc/keepalived/check_nginx.sh

#!/bin/bash
#時間變量，用于記錄日志
d=`date --date today +%Y%m%d_%H:%M:%S`
#計算nginx進(jìn)程數(shù)量
n=`ps -C nginx --no-heading|wc -l`
#如果進(jìn)程為0，則啟動nginx，并且再次檢測nginx進(jìn)程數(shù)量，
#如果還為0，說明nginx無法啟動，此時需要關(guān)閉keepalived
if [ $n -eq "0" ]; then
        /etc/init.d/nginx start
        n2=`ps -C nginx --no-heading|wc -l`
        if [ $n2 -eq "0"  ]; then
                echo "$d nginx down,keepalived will stop" >> /var/log/check_ng.log
                systemctl stop keepalived
        fi
fi

7.2 啟動keepalived

systemctl enable keepalived --now && systemctl status keepalived

nginx01

nginx02

7.3 模擬故障

7.3.1 nginx01手動關(guān)閉nginx

nginx故障后，keepalived會自動啟動nginx

7.3.2 nginx01手動關(guān)閉keepalived

nginx01的vip將會綁定到nginx02上面，nginx02將會出現(xiàn)2個vip，2個vip均可以訪問fcsserver

8、DNS服務(wù)器部署

用于模擬公網(wǎng)DNS輪詢解析，實際使用中是在域名提供商處配置指向映射外網(wǎng)ip

8.1 配置dns

/etc/named.conf

zone "fcsserver.com" IN {
        type master;
        file "fcsserver.com.zone";
};
zone "56.168.192.in-addr.arpa" IN {
        type master;
        file "192.168.56.zone";
};

/var/named/fcsserver.com.zone

$TTL    86400
@               IN SOA  tom jerry (                     ; tom & jerry 這兩個參數(shù)本應(yīng)是主機(jī)名和郵件地址，這里隨便填寫，沒有問題
            42              ; serial (d. adams)
            3H              ; refresh
            15M             ; retry
            1W              ; expiry
            1D )            ; minimum
                IN NS           ns.fcsserver.com.            ; notice : don't forget the dot in the end
                IN MX 10        mail.fcsserver.com.
www             IN A            192.168.56.200
www             IN A            192.168.56.201
ns              IN A            192.168.56.108
mail            IN A            192.168.56.108

/var/named/192.168.56.zone

$TTL    86400
@       IN      SOA     ns.fcsserver.com. root (
          1997022700 ; Serial
          28800      ; Refresh
          14400      ; Retry
          3600000    ; Expire
          86400 )    ; Minimum
        IN      NS      ns.fcsserver.com.
200     IN      PTR     www.fcsserver.com.
201     IN      PTR     www.fcsserver.com.
108     IN      PTR     mail.fcsserver.com.
108     IN      PTR     ns.fcsserver.com.

修改權(quán)限

chown named. /var/named/ -R

8.2 啟動dns服務(wù)

systemctl enable named --now && systemctl status named

9、驗證

目標(biāo)：本次實驗有2個vip 192.168.56.200 和 192.168.56.201，需要驗證www.fcsserver.com分別解析到2個vip上，并確認(rèn)每個vip后端服務(wù)正常可用

9.1 客戶端dns配置

測試期間，禁用其他網(wǎng)卡，只留虛擬機(jī)網(wǎng)卡

添加DNS

9.2 DNS緩存清理

9.3 域名訪問測試

測試之前需要確認(rèn)此次DNS解析是否指向所需測試的VIP，如果不是請刷新DNS緩存

需要測試www.fcsserver.com --> 192.168.56.200和www.fcsserver.com --> 192.168.56.201

文件轉(zhuǎn)換測試

轉(zhuǎn)換文件訪問測試

注：fcsserver的配置文件中viewDomain配置為域名，故轉(zhuǎn)換文件預(yù)覽連接只能通過www.fcsserver.com可以正常訪問，通過vip、nginx ip、fcsserver ip均不可以訪問

以上就是永中文檔在線轉(zhuǎn)換預(yù)覽雙活基于nginx的實現(xiàn)方案的詳細(xì)內(nèi)容，更多關(guān)于nginx永中文檔在線轉(zhuǎn)換預(yù)覽的資料請關(guān)注本站其它相關(guān)文章！

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