我正试图在我的持续集成系统中设置一个webhook，这样当我在Git上推送一些东西时，我的部署服务器就可以自动部署。
我用一个shell脚本完成了这项工作，我用Apache将其作为CGI脚本访问。
这很好，唯一的问题是我的脚本的标准输出在错误日志中被重定向，而不是HTTP响应。。。
我的脚本在一个自定义文件夹中，我在/var/www/cgi-bin:中有一个类似的符号链接
lrwxrwxrwx 1 root root 21 Nov 29 20:52 deploy -> /srv/myapp/deploy.sh
部署脚本包含：
#!/bin/bash
base_path="/srv/myapp"
echo "Content-type: text/plain"
echo ""
cd $base_path
sudo docker-compose stop
sudo docker-compose pull
sudo docker-compose up -d
sudo docker system prune -f
exit 0
我的sudoers文件包含：
apache ALL = NOPASSWD: /usr/bin/docker-compose
错误日志包含：
[Sun Dec 02 11:01:31.748772 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: Stopping myapp_http_1_a3ca0bdbd648 ... r: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:31.749003 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: Stopping myapp_client_1_cb16b60351f0 ... r: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:31.749151 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: Stopping myapp_server_1_6c148be61c2c ... r: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:31.749276 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: Stopping myapp_database_1_2959978817cd ... r: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:32.532484 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[4Ax1b[2KrStopping myapp_http_1_a3ca0bdbd648 ... x1b[32mdonex1b[0mrx1b[4B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:42.705754 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[3Ax1b[2KrStopping myapp_client_1_cb16b60351f0 ... x1b[32mdonex1b[0mrx1b[3B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:52.911671 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[2Ax1b[2KrStopping myapp_server_1_6c148be61c2c ... x1b[32mdonex1b[0mrx1b[2B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:53.105109 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[1Ax1b[2KrStopping myapp_database_1_2959978817cd ... x1b[32mdonex1b[0mrx1b[1B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:53.645366 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: Pulling database ... r: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:53.645577 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: Pulling server ... r: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:53.645703 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: Pulling client ... r: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:53.645808 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: Pulling http ... r: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:53.931960 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[2Ax1b[2KrPulling client ... pulling from myaccount/myapprx1b[2B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:53.932480 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[2Ax1b[2KrPulling client ... digest: sha256:06202040641b409706...rx1b[2B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:53.932865 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[2Ax1b[2KrPulling client ... status: image is up to date for g...rx1b[2B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:53.933561 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[2Ax1b[2KrPulling client ... x1b[32mdonex1b[0mrx1b[2B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:53.955566 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[4Ax1b[2KrPulling database ... pulling from myaccount/myapprx1b[4B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:53.955944 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[4Ax1b[2KrPulling database ... digest: sha256:c63765a78a26f72ec7...rx1b[4B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:53.956375 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[4Ax1b[2KrPulling database ... status: image is up to date for g...rx1b[4B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:53.956925 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[4Ax1b[2KrPulling database ... x1b[32mdonex1b[0mrx1b[4B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:53.964085 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[1Ax1b[2KrPulling http ... pulling from myaccount/myapprx1b[1B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:53.964472 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[1Ax1b[2KrPulling http ... digest: sha256:4bfc963090f942cba9...rx1b[1B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:53.964782 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[1Ax1b[2KrPulling http ... status: image is up to date for g...rx1b[1B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:53.965265 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[1Ax1b[2KrPulling http ... x1b[32mdonex1b[0mrx1b[1B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:54.071190 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[3Ax1b[2KrPulling server ... pulling from myaccount/myapprx1b[3B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:54.071609 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[3Ax1b[2KrPulling server ... digest: sha256:15dcd5ebba6a815342...rx1b[3B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:54.071918 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[3Ax1b[2KrPulling server ... status: image is up to date for g...rx1b[3B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:54.073097 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[3Ax1b[2KrPulling server ... x1b[32mdonex1b[0mrx1b[3B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:54.658070 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: Starting myapp_database_1_2959978817cd ... r: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:55.416923 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[1Ax1b[2KrStarting myapp_database_1_2959978817cd ... x1b[32mdonex1b[0mrx1b[1B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:55.417759 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: Starting myapp_server_1_6c148be61c2c ... r: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:55.824527 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[1Ax1b[2KrStarting myapp_server_1_6c148be61c2c ... x1b[32mdonex1b[0mrx1b[1B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:55.825299 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: Starting myapp_client_1_cb16b60351f0 ... r: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:56.497106 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[1Ax1b[2KrStarting myapp_client_1_cb16b60351f0 ... x1b[32mdonex1b[0mrx1b[1B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:56.499781 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: Starting myapp_http_1_a3ca0bdbd648 ... r: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:57.360969 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: x1b[1Ax1b[2KrStarting myapp_http_1_a3ca0bdbd648 ... x1b[32mdonex1b[0mrx1b[1B: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:57.443070 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: sudo: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:57.443239 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: : : /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:57.443360 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: no tty present and no askpass program specified: /var/www/cgi-bin/deploy
[Sun Dec 02 11:01:57.443434 2018] [cgi:error] [pid 25813] [client 12.34.56.78:51316] AH01215: : /var/www/cgi-bin/deploy
HTTP响应完全为空。
如果标准输出将进入的标准错误，则错误日志将有一个条目：Content-type: text/plain
由于事实并非如此，docker命令显然首先写入标准错误。因此，您可能想要的是将标准错误重定向到的标准输出，以便它最终出现在浏览器中，而不是错误日志中。
在脚本顶部添加以下命令：
exec 2>&1
它将标准错误重定向到脚本其余部分的标准输出。
如果您只想将其重定向到单个命令，请将其添加到命令末尾，例如：
sudo docker-compose pull 2>&1