{"id":33350,"date":"2022-07-25T09:12:26","date_gmt":"2022-09-05T08:26:02","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8envsubst%e5%92%8cdocker%ef%bc%8c%e5%9c%a8%e9%85%8d%e7%bd%ae%e6%96%87%e4%bb%b6%e4%b8%ad%e5%b5%8c%e5%85%a5%e7%8e%af%e5%a2%83%e5%8f%98%e9%87%8f%e7%9a%84%e9%80%9a%e7%94%a8%e6%a8%a1\/"},"modified":"2024-01-15T07:46:38","modified_gmt":"2024-01-14T23:46:38","slug":"%e4%bd%bf%e7%94%a8envsubst%e5%92%8cdocker%ef%bc%8c%e5%9c%a8%e9%85%8d%e7%bd%ae%e6%96%87%e4%bb%b6%e4%b8%ad%e5%b5%8c%e5%85%a5%e7%8e%af%e5%a2%83%e5%8f%98%e9%87%8f%e7%9a%84%e9%80%9a%e7%94%a8%e6%a8%a1","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8envsubst%e5%92%8cdocker%ef%bc%8c%e5%9c%a8%e9%85%8d%e7%bd%ae%e6%96%87%e4%bb%b6%e4%b8%ad%e5%b5%8c%e5%85%a5%e7%8e%af%e5%a2%83%e5%8f%98%e9%87%8f%e7%9a%84%e9%80%9a%e7%94%a8%e6%a8%a1\/","title":{"rendered":"\u4f7f\u7528envsubst\u548cDocker\uff0c\u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\u5d4c\u5165\u73af\u5883\u53d8\u91cf\u7684\u901a\u7528\u6a21\u5f0f"},"content":{"rendered":"

\u9996\u5148<\/h1>\n

\u4f7f\u7528Docker\u65f6\uff0c\u6211\u4eec\u5c3d\u91cf\u5c06\u955c\u50cf\u901a\u7528\u5316\uff0c\u901a\u8fc7\u6302\u8f7d\u914d\u7f6e\u6587\u4ef6\u5e76\u901a\u8fc7\u73af\u5883\u53d8\u91cf\u5d4c\u5165\u6765\u5904\u7406\u4e0d\u540c\u73af\u5883\u7684\u914d\u7f6e\u5dee\u5f02\u3002\u7136\u800c\uff0c\u80fd\u5426\u76f4\u63a5\u5c06\u73af\u5883\u53d8\u91cf\u5d4c\u5165\u914d\u7f6e\u6587\u4ef6\u53d6\u51b3\u4e8e\u76ee\u6807\u8f6f\u4ef6\u7684\u5b9e\u73b0\u3002\u4f8b\u5982\uff0cfluentd\u53ef\u4ee5\u76f4\u63a5\u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\u5d4c\u5165\u73af\u5883\u53d8\u91cf\uff0c\u4f46nginx\u5374\u65e0\u6cd5\u76f4\u63a5\u8fd9\u4e48\u505a\u3002<\/p>\n

\u6240\u4ee5\uff0c\u5e38\u5e38\u505a\u7684\u662f\u521b\u5efa\u4e00\u4e2a\u7c7b\u4f3c\u4e8eentrypoint.sh\u7684\u6587\u4ef6\uff0c\u5728\u542f\u52a8\u65f6\u4f7f\u7528sed\u8fdb\u884c\u539f\u59cb\u7684\u65b9\u6cd5\uff0c\u4f46\u4f5c\u4e3a\u66f4\u806a\u660e\u7684\u65b9\u6cd5\uff0c\u6211\u60f3\u4ecb\u7ecd\u4e00\u4e0benvsubst\uff0c\u5b83\u662f\u4e00\u79cd\u8f7b\u91cf\u7ea7\u7684\u6a21\u677f\u5f15\u64ce\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u5c06\u73af\u5883\u53d8\u91cf\u5d4c\u5165\u5230\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0c\u975e\u5e38\u65b9\u4fbf\u3002<\/p>\n

\u5b89\u88c5<\/h1>\n

nginx\uff1a\u7531\u4e8ealpine\u955c\u50cf\u4e2d\u5df2\u7ecf\u5185\u7f6e\u4e86envsubst\u547d\u4ee4\uff0c\u56e0\u6b64\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u3002<\/p>\n

\u5982\u679c\u672a\u5728\u5176\u4ed6\u5f71\u50cf\u955c\u50cf\u4e2d\u9884\u52a0\u8f7d\u7684\u8bdd\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u5b89\u88c5\u3002<\/p>\n

\u963f\u5c14\u5351\u65af\u5c71\uff1a3.5<\/h2>\n

\u4ee5\u4e0b\u7684\u5b89\u88c5\u65b9\u6cd5\u5f88\u7b80\u5355\u3002<\/p>\n

$ <\/span>apk --no-cache<\/span> add gettext\r\n<\/code><\/pre>\n
\u5982\u679c\u4f60\u60f3\u8981\u518d\u524a\u51cf\u4e00\u70b9\u5c3a\u5bf8\u7684\u8bdd\uff0c\u53ef\u4ee5\u8fd9\u6837\u505a\u3002<\/p>\n
FROM alpine:3.5\r\n\r\nRUN apk --no-cache add libintl && \\\r\n      apk --no-cache add --virtual .gettext gettext && \\\r\n      cp \/usr\/bin\/envsubst \/usr\/local\/bin\/envsubst && \\\r\n      apk del .gettext\r\n<\/code><\/pre>\n
\u4f5c\u4e3a\u5c3a\u5bf8\u5927\u7ea6\u662f\u8fd9\u6837\uff0cenvsubst\u7684\u6587\u4ef6\u5927\u5c0f\u5927\u7ea6\u662f111KB\u5de6\u53f3\u3002\u975e\u5e38\u8f7b\u5de7\u3002<\/p>\n
$ docker build -t envsubst .\r\n$ docker images\r\nREPOSITORY                      TAG                 IMAGE ID            CREATED             SIZE\r\nenvsubst                        latest              1bab5f1656d7        6 seconds ago       4.095 MB\r\nalpine                          3.5                 88e169ea8f46        5 weeks ago         3.984 MB\r\n<\/code><\/pre>\n
Debian\uff1aJessie<\/h2>\n
$ <\/span>apt-get install <\/span>gettext-base\r\n<\/code><\/pre>\n
\u7528\u6cd5<\/h2>\n
\u5047\u8bbe\u6709\u4e00\u4e2a\u7b80\u5355\u7684\u8bbe\u7f6e\u6587\u4ef6\u5982\u4e0b\uff1a<\/p>\n
$ <\/span>cat <\/span>test.conf.template\r\nhoge<\/span>=<\/span>$HOGE<\/span>\r\n<\/code><\/pre>\n
\u8fd9\u6837\u7684\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u6302\u8f7d\u914d\u7f6e\u6587\u4ef6\uff0c\u63d2\u5165\u73af\u5883\u53d8\u91cf\uff0c\u7136\u540e\u5c06\u5176\u4f20\u9012\u7ed9envsubst\u6765\u8fdb\u884c\u5d4c\u5165\u3002<\/p>\n
$ <\/span>docker run --rm<\/span> \\<\/span>\r\n    -v<\/span> $(<\/span>pwd<\/span>)<\/span>\/test.conf.template:\/tmp\/test.conf.template \\<\/span>\r\n    -e<\/span> HOGE<\/span>=<\/span>aaa \\<\/span>\r\n    nginx:alpine \\<\/span>\r\n    \/bin\/sh -c<\/span> \"envsubst < \/tmp\/test.conf.template > \/tmp\/test.conf && cat \/tmp\/test.conf\"<\/span>\r\nhoge<\/span>=<\/span>aaa\r\n<\/code><\/pre>\n
\u542c\u8d77\u6765\u5f88\u5b9e\u7528\uff0c\u597d\u50cf\u4ec0\u4e48\u90fd\u53ef\u4ee5\u7528\u5f97\u5230\u3002<\/p>\n
\u5982\u679c\u50cfnginx.conf\u4e00\u6837\uff0c\u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\u53ef\u4ee5\u4f7f\u7528$\u7b26\u53f7\uff0c\u5219\u9700\u8981\u660e\u786e\u6307\u5b9a\u8981\u5d4c\u5165\u7684\u73af\u5883\u53d8\u91cf\u540d\u79f0\u3002<\/p>\n
\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u7c7b\u4f3c\u4e8e\u4ee5\u4e0b\u6837\u5f0f\u7684nginx.conf\u6587\u4ef6\uff0c\u6211\u4eec\u60f3\u8981\u66ff\u6362${NGINX_SERVER_NAME}\uff0c${NGINX_UPSTREAM_HOST}\u548c${NGINX_UPSTREAM_PORT}\uff0c\u4f46\u4e0d\u5e0c\u671b\u66ff\u6362$remote_addr\u3001$host\u7b49\u3002<\/p>\n
user<\/span>  nginx<\/span>;<\/span>\r\nworker_processes<\/span>  1<\/span>;<\/span>\r\n\r\nerror_log<\/span>  \/var\/log\/nginx\/error.log<\/span> warn<\/span>;<\/span>\r\npid<\/span>        \/var\/run\/nginx.pid<\/span>;<\/span>\r\n\r\nevents<\/span> {<\/span>\r\n    worker_connections<\/span>  1024<\/span>;<\/span>\r\n}<\/span>\r\n\r\nhttp<\/span> {<\/span>\r\n    include<\/span>       \/etc\/nginx\/mime.types<\/span>;<\/span>\r\n    default_type<\/span>  application\/octet-stream<\/span>;<\/span>\r\n\r\n    log_format<\/span>  main<\/span>  '<\/span>$remote_addr<\/span> -<\/span> $remote_user<\/span> [<\/span>$time_local<\/span>]<\/span> \"<\/span>$request<\/span>\"<\/span> '<\/span>\r\n        '<\/span>$status<\/span> $body_bytes_sent<\/span> \"<\/span>$http_referer<\/span>\"<\/span> '<\/span>\r\n        '\"<\/span>$http_user_agent<\/span>\"<\/span> \"<\/span>$http_x_forwarded_for<\/span>\"'<\/span>;<\/span>\r\n\r\n    access_log<\/span>  \/var\/log\/nginx\/access.log<\/span>  main<\/span>;<\/span>\r\n\r\n    sendfile<\/span>        on<\/span>;<\/span>\r\n    #tcp_nopush     on;<\/span>\r\n\r\n    keepalive_timeout<\/span>  65<\/span>;<\/span>\r\n\r\n    #gzip  on;<\/span>\r\n\r\n    resolver<\/span>           127<\/span>.0.0.11<\/span> valid=5s<\/span>;<\/span>\r\n\r\n    server<\/span> {<\/span>\r\n        listen<\/span> 80<\/span>;<\/span>\r\n        set_real_ip_from<\/span>   '10.0.0.0\/8'<\/span>;<\/span>\r\n        real_ip_header<\/span>     X-Forwarded-For<\/span>;<\/span>\r\n        proxy_set_header<\/span>   Host<\/span> $host<\/span>;<\/span>\r\n        proxy_set_header<\/span>   X-Forwarded-Proto<\/span> https<\/span>;<\/span>\r\n\r\n        server_name<\/span> ${<\/span>NGINX_SERVER_NAME<\/span>}<\/span>;<\/span>\r\n\r\n        set<\/span> $upstream<\/span> ${<\/span>NGINX_UPSTREAM_HOST<\/span>}<\/span>;<\/span>\r\n\r\n        location<\/span> \/<\/span> {<\/span>\r\n            proxy_pass<\/span> http:\/\/<\/span>$upstream<\/span>:<\/span>${<\/span>NGINX_UPSTREAM_PORT<\/span>}<\/span>;<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n    include<\/span> \/etc\/nginx\/conf.d\/*.conf<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u60a8\u9700\u8981\u5728envsubst\u4e2d\u6307\u5b9a\u8981\u66ff\u6362\u7684\u73af\u5883\u53d8\u91cf\u540d\u79f0\u3002
\n\u7531\u4e8e\u53c2\u6570\u592a\u957f\uff0c\u56e0\u6b64\u5c06\u5176\u653e\u7f6e\u5728docker-compose.yml\u4e2d\u3002(2017\/02\/05: \u6709\u4eba\u6307\u51fa\u4e0d\u9700\u8981\u4f7f\u7528\u6362\u884c\u7b26\u6765\u4fee\u9970\uff0c\u6240\u4ee5\u8fdb\u884c\u4e86\u4fee\u6b63)<\/p>\n
version<\/span>:<\/span> '<\/span>2'<\/span>\r\nservices<\/span>:<\/span>\r\n  nginx<\/span>:<\/span>\r\n    image<\/span>:<\/span> nginx:alpine<\/span>\r\n    command<\/span>:<\/span> ><\/span>\r\n      \/bin\/sh -c<\/span>\r\n      \"envsubst '<\/span>\r\n      $$NGINX_SERVER_NAME<\/span>\r\n      $$NGINX_UPSTREAM_HOST<\/span>\r\n      $$NGINX_UPSTREAM_PORT<\/span>\r\n      '< \/etc\/nginx\/nginx.conf.template<\/span>\r\n      > \/etc\/nginx\/nginx.conf<\/span>\r\n      && nginx -g 'daemon off;'\"<\/span>\r\n    volumes<\/span>:<\/span>\r\n      -<\/span> .\/nginx.conf.template:\/etc\/nginx\/nginx.conf.template<\/span>\r\n    ports<\/span>:<\/span>\r\n      -<\/span> 8080:80<\/span>\r\n    environment<\/span>:<\/span>\r\n      NGINX_SERVER_NAME<\/span>:<\/span> \"<\/span>test.example.com\"<\/span>\r\n      NGINX_UPSTREAM_HOST<\/span>:<\/span> \"<\/span>hoge\"<\/span>\r\n      NGINX_UPSTREAM_PORT<\/span>:<\/span> \"<\/span>80\"<\/span>\r\n<\/code><\/pre>\n
\u6211\u4f1a\u542f\u52a8\u5e76\u67e5\u770b\u914d\u7f6e\u6587\u4ef6\u7684\u5185\u5bb9\u3002<\/p>\n
$ <\/span>docker-compose up -d<\/span>\r\nStarting 20170204_nginx_1\r\n\r\n$ <\/span>docker exec<\/span> -it<\/span> $(<\/span>docker ps -l<\/span> -q<\/span>)<\/span> cat<\/span> \/etc\/nginx\/nginx.conf\r\n<\/code><\/pre>\n
\u73af\u5883\u53d8\u91cf\u5df2\u7ecf\u5d4c\u5165\u6b63\u786e\u6307\u5b9a\u7684\u4f4d\u7f6e\u3002<\/p>\n
user<\/span>  nginx<\/span>;<\/span>\r\nworker_processes<\/span>  1<\/span>;<\/span>\r\n\r\nerror_log<\/span>  \/var\/log\/nginx\/error.log<\/span> warn<\/span>;<\/span>\r\npid<\/span>        \/var\/run\/nginx.pid<\/span>;<\/span>\r\n\r\nevents<\/span> {<\/span>\r\n        worker_connections<\/span>  1024<\/span>;<\/span>\r\n}<\/span>\r\n\r\nhttp<\/span> {<\/span>\r\n        include<\/span>       \/etc\/nginx\/mime.types<\/span>;<\/span>\r\n        default_type<\/span>  application\/octet-stream<\/span>;<\/span>\r\n\r\n        log_format<\/span>  main<\/span>  '<\/span>$remote_addr<\/span> -<\/span> $remote_user<\/span> [<\/span>$time_local<\/span>]<\/span> \"<\/span>$request<\/span>\"<\/span> '<\/span>\r\n                '<\/span>$status<\/span> $body_bytes_sent<\/span> \"<\/span>$http_referer<\/span>\"<\/span> '<\/span>\r\n                '\"<\/span>$http_user_agent<\/span>\"<\/span> \"<\/span>$http_x_forwarded_for<\/span>\"'<\/span>;<\/span>\r\n\r\n        access_log<\/span>  \/var\/log\/nginx\/access.log<\/span>  main<\/span>;<\/span>\r\n\r\n        sendfile<\/span>        on<\/span>;<\/span>\r\n        #tcp_nopush     on;<\/span>\r\n\r\n        keepalive_timeout<\/span>  65<\/span>;<\/span>\r\n\r\n        #gzip  on;<\/span>\r\n\r\n        resolver<\/span>           127<\/span>.0.0.11<\/span> valid=5s<\/span>;<\/span>\r\n\r\n        server<\/span> {<\/span>\r\n                listen<\/span> 80<\/span>;<\/span>\r\n                set_real_ip_from<\/span>   '10.0.0.0\/8'<\/span>;<\/span>\r\n                real_ip_header<\/span>     X-Forwarded-For<\/span>;<\/span>\r\n                proxy_set_header<\/span>   Host<\/span> $host<\/span>;<\/span>\r\n                proxy_set_header<\/span>   X-Forwarded-Proto<\/span> https<\/span>;<\/span>\r\n\r\n                server_name<\/span> test.example.com<\/span>;<\/span>\r\n\r\n                set<\/span> $upstream<\/span> hoge<\/span>;<\/span>\r\n\r\n                location<\/span> \/<\/span> {<\/span>\r\n                        proxy_pass<\/span> http:\/\/<\/span>$upstream<\/span>:<\/span>80<\/span>;<\/span>\r\n                }<\/span>\r\n        }<\/span>\r\n        include<\/span> \/etc\/nginx\/conf.d\/*.conf<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u603b\u7ed3<\/h1>\n
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