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apache2如何做负载均衡

编辑日期: 2024-07-16 文章阅读:

输入网址 https://ai-jupyter.com,现在只有一台服务器,现在准备再扩展一台,并且想做负载均衡。如何从零实现。 从两台服务器中选择一台 作为 负载均衡器。

步骤 1: 配置 100.100.100.1 作为负载均衡器

1.1 安装和配置 Apache

100.100.100.1 服务器上,确保安装了 Apache 并启用了必要的模块:

sudo apt-get update
sudo apt-get install apache2
sudo a2enmod proxy
sudo a2enmod proxy_balancer
sudo a2enmod proxy_http
sudo a2enmod lbmethod_bybusyness
sudo a2enmod ssl

1.2 配置虚拟主机

编辑 Apache 的虚拟主机配置文件:

sudo nano /etc/apache2/sites-available/ai-jupyter.conf

添加以下内容:

<VirtualHost *:80>
    ServerName ai-jupyter.com

    DocumentRoot /var/www/html/dist

    <Directory /var/www/html/dist>
        Options Indexes FollowSymLinks MultiViews
        AllowOverride All
        Order allow,deny
        allow from all
        Require all granted
    </Directory>

    <Proxy "balancer://mycluster">
        BalancerMember "http://100.100.100.1:8099"
        BalancerMember "http://100.100.100.2:8099"
        ProxySet lbmethod=bybusyness
    </Proxy>

    ProxyPass "/" "balancer://mycluster/"
    ProxyPassReverse "/" "balancer://mycluster/"

    ErrorLog ${APACHE_LOG_DIR}/ai-jupyter-error.log
    CustomLog ${APACHE_LOG_DIR}/ai-jupyter-access.log combined
</VirtualHost>

<VirtualHost *:443>
    ServerName ai-jupyter.com

    DocumentRoot /var/www/html/dist

    <Directory /var/www/html/dist>
        Options Indexes FollowSymLinks MultiViews
        AllowOverride All
        Order allow,deny
        allow from all
        Require all granted
    </Directory>

    SSLEngine on
    SSLCertificateFile /etc/letsencrypt/live/ai-jupyter.com/fullchain.pem
    SSLCertificateKeyFile /etc/letsencrypt/live/ai-jupyter.com/privkey.pem

    <Proxy "balancer://mycluster">
        BalancerMember "http://100.100.100.1:8099"
        BalancerMember "http://100.100.100.2:8099"
        ProxySet lbmethod=bybusyness
    </Proxy>

    ProxyPass "/" "balancer://mycluster/"
    ProxyPassReverse "/" "balancer://mycluster/"

    ErrorLog ${APACHE_LOG_DIR}/ai-jupyter-error.log
    CustomLog ${APACHE_LOG_DIR}/ai-jupyter-access.log combined
</VirtualHost>

1.3 启用虚拟主机配置

启用新的虚拟主机配置文件:

sudo a2ensite ai-jupyter.conf

禁用默认的虚拟主机配置文件(如果不需要):

sudo a2dissite 000-default.conf

1.4 重启 Apache 服务

重启 Apache 服务以应用更改:

sudo systemctl restart apache2

步骤 2: 配置 100.100.100.2 服务器

确保 100.100.100.2 服务器也配置好 Apache 和 SSL 证书。

2.1 安装和配置 Apache

100.100.100.2 服务器上,确保安装了 Apache:

sudo apt-get update
sudo apt-get install apache2
sudo a2enmod ssl

2.2 复制证书文件

100.100.100.1 服务器复制 Let's Encrypt 证书文件到 100.100.100.2 服务器:

scp -r /etc/letsencrypt/live/ai-jupyter.com/ bitnami@100.100.100.2:/etc/letsencrypt/live/
scp -r /etc/letsencrypt/archive/ai-jupyter.com/ bitnami@100.100.100.2:/etc/letsencrypt/archive/
scp /etc/letsencrypt/renewal/ai-jupyter.com.conf bitnami@100.100.100.2:/etc/letsencrypt/renewal/

2.3 配置 Apache 虚拟主机

编辑 /etc/apache2/sites-available/ai-jupyter.conf

sudo nano /etc/apache2/sites-available/ai-jupyter.conf

添加以下内容:

<VirtualHost *:80>
    ServerName ai-jupyter.com
    Redirect permanent / https://ai-jupyter.com/
</VirtualHost>

<VirtualHost *:443>
    ServerAdmin webmaster@ai-jupyter.com
    ServerName ai-jupyter.com
    DocumentRoot /var/www/html

    SSLEngine on
    SSLCertificateFile /etc/letsencrypt/live/ai-jupyter.com/fullchain.pem
    SSLCertificateKeyFile /etc/letsencrypt/live/ai-jupyter.com/privkey.pem

    ErrorLog ${APACHE_LOG_DIR}/ai-jupyter-error.log
    CustomLog ${APACHE_LOG_DIR}/ai-jupyter-access.log combined
</VirtualHost>

2.4 启用虚拟主机配置

启用新的虚拟主机配置文件:

sudo a2ensite ai-jupyter.conf

禁用默认的虚拟主机配置文件(如果不需要):

sudo a2dissite 000-default.conf

2.5 重启 Apache 服务

重启 Apache 服务以应用更改:

sudo systemctl restart apache2

步骤 3: 配置域名解析

确保您的域名 ai-jupyter.com 指向 100.100.100.1 服务器的 IP 地址。在您的域名注册服务商(例如 Amazon Route 53)中,配置 DNS 记录。

3.1 添加 A 记录

  • Name: ai-jupyter.com
  • Type: A
  • Value: 100.100.100.1

最后验证

  1. 检查 DNS 解析:确保 ai-jupyter.com 正确解析到 100.100.100.1 服务器的 IP 地址。
  2. 测试访问:在浏览器中访问 https://ai-jupyter.com,确保请求被正确分发到两台后端服务器。

通过这些步骤,您可以使用 100.100.100.1 服务器作为负载均衡器,并将 ai-jupyter.com 域名的流量分发到 100.100.100.1100.100.100.2 两台服务器。这将提高您的网站的可用性和性能。

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