如何在 AWS Elastic Beanstalk 上修改 Nginx 配置

Posted 2023-03-04

【中文标题】如何在 AWS Elastic Beanstalk 上修改 Nginx 配置

【英文标题】：How to amend Nginx config on AWS Elastic Beanstalk

【发布时间】：2015-11-27 18:12:55

【问题描述】：

我正在尝试为我的 Elastic Beanstalk 部署修改 Nginx 配置。默认配置是：-

upstream nodejs 
    server 127.0.0.1:8081;
    keepalive 256;


server 
    listen 8080;


    if ($time_iso8601 ~ "^(\d4)-(\d2)-(\d2)T(\d2)") 
        set $year $1;
        set $month $2;
        set $day $3;
        set $hour $4;
    
    access_log /var/log/nginx/healthd/application.log.$year-$month-$day-$hour healthd;
    access_log  /var/log/nginx/access.log  main;


    location / 
        proxy_pass  http://nodejs;
        proxy_set_header   Connection "";
        proxy_http_version 1.1;
        proxy_set_header        Host            $host;
        proxy_set_header        X-Real-IP       $remote_addr;
        proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
    

gzip on;
gzip_comp_level 4;
gzip_types text/html text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;

我尝试将其他命令添加到位置节点：-

chunked_transfer_encoding off;
proxy_buffering off;
proxy_cache off;

我最初尝试将以下内容添加到我的.ebextensions:-

    files:
    "/etc/nginx/conf.d/00_elastic_beanstalk_proxy.conf" :
            mode: "000644"
            owner: root
            group: root
            content: |
            upstream nodejs 
                            server 127.0.0.1:8081;
                            keepalive 256;
                    

                    server 
                            listen 8080;
                            if ($time_iso8601 ~ "^(\d4)-(\d2)-(\d2)T(\d2)") 
                                    set $year $1;
                                    set $month $2;
                                    set $day $3;
                                    set $hour $4;
                            
                            access_log /var/log/nginx/healthd/application.log.$year-$month-$day-$hour healthd;
                            access_log  /var/log/nginx/access.log  main;


                            location / 
                                    proxy_pass  http://nodejs;
                                    proxy_set_header   Connection "";
                                    proxy_http_version 1.1;
                                    chunked_transfer_encoding off;
                                    proxy_buffering off;
                                    proxy_cache off;
                                    proxy_set_header        Host            $host;
                                    proxy_set_header        X-Real-IP       $remote_addr;
                                    proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
                            

                    gzip on;
                    gzip_comp_level 4;
                    gzip_types text/html text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;


                    

但是，在通过 SSH 连接到 EC2 实例时，我可以看到该文件与原始文件没有任何变化。然后我做了一些更多的研究，建议在/etc/nginx/conf.d/00_elastic_beanstalk_proxy.conf 被部署 .ebextensions 文件运行之后。

http://finik.net/2014/10/29/Beanstalk/ Nginx config file overwritten during Elastic Beanstalk deployment?

所以我尝试了以下方法：-

    files:
    "/tmp/deployment/config/#etc#nginx#conf.d#00_elastic_beanstalk_proxy.conf" :
            mode: "000755"
            owner: root
            group: root
            content: |
            upstream nodejs 
                            server 127.0.0.1:8081;
                            keepalive 256;
                    

                    server 
                            listen 8080;
                            if ($time_iso8601 ~ "^(\d4)-(\d2)-(\d2)T(\d2)") 
                                    set $year $1;
                                    set $month $2;
                                    set $day $3;
                                    set $hour $4;
                            
                            access_log /var/log/nginx/healthd/application.log.$year-$month-$day-$hour healthd;
                            access_log  /var/log/nginx/access.log  main;


                            location / 
                                    proxy_pass  http://nodejs;
                                    proxy_set_header   Connection "";
                                    proxy_http_version 1.1;
                                    chunked_transfer_encoding off;
                                    proxy_buffering off;
                                    proxy_cache off;
                                    proxy_set_header        Host            $host;
                                    proxy_set_header        X-Real-IP       $remote_addr;
                                    proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
                            

                    gzip on;
                    gzip_comp_level 4;
                    gzip_types text/html text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;


                    

再次，在通过 SSH 连接到实例时，我可以看到 /tmp/deployment/config/#etc#nginx#conf.d#00_elastic_beanstalk_proxy.conf 或 /etc/nginx/conf.d/00_elastic_beanstalk_proxy.conf 都没有被修改。

所以现在我很困。我有哪些选择？

【问题讨论】：

.ebextensions 格式为 YAML 或 JSON。而且，您的配置格式是 YAML。 YAML 需要正确的缩进。在上面的配置中，缩进看起来是错误的（files: 和 "/etc/nginx/conf.d/00_elastic_beanstalk_proxy.conf" : 不应该在同一个缩进中）。

【参考方案1】：

有效的是编写一个 sed 脚本来更新 00_elastic_beanstalk_proxy.conf 文件（通过搜索和替换）并在 container_command 挂钩处运行所述脚本。

您可以拥有这样的.ebextensions 文件：

files:
  /tmp/deployment/custom_mod_nginx.sh:
    mode: "000755"
    content: |
        sed -i 's/proxy_http_version 1.1;/     proxy_http_version 1.1;\n     chunked_transfer_encoding off;\n     proxy_buffering off;\n   proxy_cache off;\n/' /tmp/deployment/config/#etc#nginx#conf.d#00_elastic_beanstalk_proxy.conf
container_commands:
  nginx_real_ip:
    command: "/tmp/deployment/custom_mod_nginx.sh"

这将创建一个名为custom_mod_nginx.sh 的脚本（你可以使用你想要的名称）。该脚本在 beanstalk 部署配置后执行。

【讨论】：

这是目前唯一可以修改/tmp/deployment/config/#etc#nginx#nginx.conf文件的解决方案。