使用Let's Encrypt取得SSL證明書,設置在EC2+Nginx伺服器上

Table of Contents

Table of Contents

介紹Let's Encrypt證明書取得流程並設定到EC2+Nginx伺服器。

安裝Certbot

# amazon-linux-extras install epel
# yum install epel-release
# yum install certbot python-certbot-apache

確認Certbot是否安裝成功

# certbot -h

開啟80,443 port

透過AWS security group開放80(http), 443(https) port。


取得証明書

# certbot certonly --webroot -w /home/appuser/public_html/ -d hoge-staging.example.com

-w: 根目錄

-d: 網域名


製作証明書並在Nginx上設定

/etc/nginx/conf.d/ 中,創建ssl.config檔案,並將以下內容填上。

{YOUR DOMAIN}:網域名稱 {YOUR SERVER NAME}:網路服務器名稱 {YOUR ROOT DIRECTORY}:根目錄名稱

server {
    listen       443;
    ssl                  on;
    ssl_certificate     /etc/letsencrypt/live/{YOUR DOMAIN}/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/{YOUR DOMAIN}/privkey.pem;

    server_name  {YOUR SERVER NAME};
    port_in_redirect off;
    root         {YOUR ROOT DIRECTORY};
    index index.php index.html index.htm;

    #charset koi8-r;

    #access_log  /var/log/nginx/host.access.log  main;
    access_log /var/log/nginx/access.log main;
    error_log  /var/log/nginx/error.log  notice;

    client_max_body_size 100M;
    error_page 404 /404.html;
    error_page 500 502 504 /500.html;

    #location / {
    #}

    location / {
        try_files $uri $uri/ /index.php$is_args$args;PUT, DELETE';
    }

    # redirect server error pages to the static page /40x.html
    #
    error_page 404 /404.html;
    location = /40x.html {
    }

    # redirect server error pages to the static page /50x.html
    #
    error_page 500 502 503 504 /50x.html;
    location = /50x.html {
    }

    # proxy the PHP scripts to Apache listening on 127.0.0.1:80
    #
    #location ~ \.php$ {
    #    proxy_pass   http://127.0.0.1;
    #}

    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
    #
    location ~ \.php$ {
        fastcgi_pass   unix:/run/php-fpm/php-fpm.sock;
        fastcgi_index  index.php;
        fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
        fastcgi_read_timeout 180;
        include        fastcgi_params;
        client_max_body_size 10M;
    }

    location ~* ^.+\.(jpg|js|jpeg|png|ico|gif|txt|js|css|swf|zip|rar|avi|exe|mpg|mp3|wav|mpeg|asf|wmv)$ {
        try_files $uri /index.php$is_args$args;
        expires 24h;
    }

    # deny access to .htaccess files, if Apache's document root
    # concurs with nginx's one
    #
    #location ~ /\.ht {
    #    deny  all;
    #}
}

用以下指令檢查設置檔案是否正確。

# nginx -t

如何更新證明書

以下指令可以更新證明書。


# certbot renew


// test 
# certbot --dry-run renew

// force
# certbot --force-renewal renew


自動定期更新

證明書的有效期限為三個月,可以透過cron來設置定時處理。

0 1 1 * * certbot renew --force-renewal && service nginx restart