[英]AWS ECS Docker - nginx: [emerg] host not found in upstream
我正在尝试使用 docker 在 AWS ECS 上运行 php + mysql 应用程序。 应用栈由mysql、elk、php-fpm和nginx docker容器组成。 这些容器都运行在同一台 docker 机器上。 当任务启动时,nginx 容器退出并出现以下错误: nginx: [emerg] host not found in upstream "php:9001" in /etc/nginx/conf.d/upstream.conf:1 。
Nginx Dockerfile:
FROM alpine:3.4
RUN apk add --update nginx
#Clear Cache and Temp Data
RUN rm -rf /var/cache/apk/* && rm -rf /tmp/*
ADD nginx.conf /etc/nginx/
ADD symfony.conf /etc/nginx/conf.d/
RUN echo "upstream php-upstream { server php:9001; }" > /etc/nginx/conf.d/upstream.conf
RUN adduser -D -g '' -G www-data www-data
CMD ["nginx"]
EXPOSE 80
EXPOSE 443
RUN echo "upstream php-upstream { server php:9001; }" > /etc/nginx/conf.d/upstream.conf
php:9001
部分引用了在 AWS ECS 任务定义中定义的 php 容器。
nginx.conf:
user www-data;
worker_processes 4;
pid /run/nginx.pid;
events {
worker_connections 2048;
multi_accept on;
use epoll;
}
http {
server_tokens off;
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 15;
types_hash_max_size 2048;
include /etc/nginx/mime.types;
default_type application/octet-stream;
access_log off;
error_log off;
gzip on;
gzip_disable "msie6";
include /etc/nginx/conf.d/*.conf;
include /etc/nginx/sites-enabled/*;
open_file_cache max=100;
}
daemon off;
symfony.conf:
server {
server_name _;
root /var/www/symfony/web;
location / {
try_files $uri @rewriteapp;
}
location @rewriteapp {
rewrite ^(.*)$ /app.php/$1 last;
}
location ~ ^/(app|app_dev|config)\.php(/|$) {
fastcgi_pass php-upstream;
fastcgi_split_path_info ^(.+\.php)(/.*)$;
include fastcgi_params;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_param HTTPS off;
}
error_log /var/log/nginx/symfony_error.log;
access_log /var/log/nginx/symfony_access.log;
}
/etc/php7/php-fpm.conf:
[symfony]
user = nobody
group = nobody
listen = 0.0.0.0:9001
pm = dynamic
pm.max_children = 1000
pm.start_servers = 1
pm.min_spare_servers = 1
pm.max_spare_servers = 3
env[DB_1_ENV_MYSQL_DATABASE] = $DB_1_ENV_MYSQL_DATABASE
env[DB_1_ENV_MYSQL_USER] = $DB_1_ENV_MYSQL_USER
env[DB_1_ENV_MYSQL_PASSWORD] = $DB_1_ENV_MYSQL_PASSWORD
catch_workers_output = yes
我还尝试将listen = /var/run/php-fpm/php-fpm.sock
或listen = 127.0.0.1:9001
更改为对 nginx 配置进行相应更改,但这导致了各种其他错误消息。
我没有在php
和nginx
容器之间的 AWS ECS 任务定义中设置链接。
要为容器设置链接,请转到NETWORK SETTINGS
,然后在Links
字段中输入Links
。
正如@OnurDemir 所说的那样,当您的网络模式为awsvpc
- "networkMode": "awsvpc",
awsvpc
"networkMode": "awsvpc",
时,您不能使用links
。
使用这种网络模式,您可以仅使用名称来调用容器。
任务定义.json
{
"family": "app-backend",
"containerDefinitions": [
{
"name": "nginx",
"image": "my-url-to-the-docker-image",
"portMappings": [
{
"containerPort": 80,
"hostPort": 80,
"protocol": "tcp"
}
],
"dependsOn": [
{
"containerName": "php-fpm",
"condition": "START"
}
],
"essential": true
},
{
"name": "php-fpm",
"image": "my-url-to-the-docker-image",
"portMappings": [
{
"containerPort": 9000
}
],
"essential": true
}
],
"executionRoleArn": "ecsTaskExecutionRole",
"cpu": "1024",
"memory": "2048",
"networkMode": "awsvpc"
}
在这里你可以看到:
nginx
容器dependsOn
于php-fpm
容器。php-fpm
容器时,f. 前任。 nginx
的 vhost 文件,您可以通过其名称php-fpm
调用它。 示例 1: fastcgi_pass php-fpm:9000;
另一种方法是,在使用 AWS Fargate 时,您可以只调用环回127.0.0.1
或localhost
。 在一些 AWS 博客中描述,当使用awsvpc
,容器间连接的建立就像所有都在同一台机器上一样,即使它们是单独的容器。
示例 2: fastcgi_pass 127.0.0.1:9000;
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