Question

我试图阻止运行Nginx的Docker容器，只有在该Nginx实例的access.log中没有活动一段时间后才会停止。

是否可以从容器内停止Docker容器？我能想到的另一个解决方案是在主机操作系统上运行一个cron来检查/var/lib/docker/aufs/mnt/[container id]/，但我计划启动大量容器，并且不希望保留ID列表。

Answer 1

当容器中的主进程停止时，docker容器停止。

我设置了一个小的dockerfile和一个启动脚本，以显示它在你的情况下是如何工作的：

<强> Dockerfile

FROM nginx
COPY start.sh /
CMD ["/start.sh"]

<强> start.sh

#!/bin/bash
nginx &
sleep 20
# replace sleep 20 with your test of inactivity 
nginx stop

构建容器，运行并测试

$ docker build -t ng .

$ docker run -d ng 

$ docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
3a373e721da7        ng:latest           "/start.sh"         4 seconds ago       Up 3 seconds        443/tcp, 80/tcp     distracted_colden   
$ docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
3a373e721da7        ng:latest           "/start.sh"         16 seconds ago      Up 16 seconds       80/tcp, 443/tcp     distracted_colden   
$ docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
$

Answer 2

您可以在该泊坞窗图像中共享您的泊坞袜，然后进行必要的操作。

在docker图像中共享docker sock，执行以下操作： docker run -v /var/run/docker.sock:/run/docker.sock -v $(which docker):/bin/docker YOUR_IMAGE

在ENV vars中，您将获得容器ID，例如在容器echo $HOSTNAME

中运行

Answer 3

我运行了一个nginx容器，然后无法再次启动它：

WITH LOG AS
(
    SELECT 11 AS FINISH_POSITION
         , NULL AS OFFICIAL_RATING
         , '2013-09-18' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 4 AS FINISH_POSITION
         , NULL AS OFFICIAL_RATING
         , '2013-11-08' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 3 AS FINISH_POSITION
         , NULL AS OFFICIAL_RATING
         , '2014-02-27' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 6 AS FINISH_POSITION
         , '65' AS OFFICIAL_RATING
         , '2014-04-24' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 13 AS FINISH_POSITION
         , '63' AS OFFICIAL_RATING
         , '2014-05-05' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 1 AS FINISH_POSITION
         , '59' AS OFFICIAL_RATING
         , '2014-07-03' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 2 AS FINISH_POSITION
         , '65' AS OFFICIAL_RATING
         , '2014-08-04' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 12 AS FINISH_POSITION
         , '68' AS OFFICIAL_RATING
         , '2014-10-28' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 9 AS FINISH_POSITION
         , '62' AS OFFICIAL_RATING
         , '2014-12-09' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 5 AS FINISH_POSITION
         , '65' AS OFFICIAL_RATING
         , '2015-01-08' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 7 AS FINISH_POSITION
         , '60' AS OFFICIAL_RATING
         , '2015-01-29' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 11 AS FINISH_POSITION
         , '65' AS OFFICIAL_RATING
         , '2015-04-08' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 5 AS FINISH_POSITION
         , '63' AS OFFICIAL_RATING
         , '2015-04-22' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 1 AS FINISH_POSITION
         , '60' AS OFFICIAL_RATING
         , '2015-07-14' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 9 AS FINISH_POSITION
         , '60' AS OFFICIAL_RATING
         , '2015-08-04' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 8 AS FINISH_POSITION
         , '65' AS OFFICIAL_RATING
         , '2016-01-22' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 4 AS FINISH_POSITION
         , '52' AS OFFICIAL_RATING
         , '2016-02-26' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 7 AS FINISH_POSITION
         , '50' AS OFFICIAL_RATING
         , '2016-03-31' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 8 AS FINISH_POSITION
         , '48' AS OFFICIAL_RATING
         , '2016-04-25' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 4 AS FINISH_POSITION
         , '56' AS OFFICIAL_RATING
         , '2016-07-12' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 8 AS FINISH_POSITION
         , '47' AS OFFICIAL_RATING
         , '2016-09-23 ' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 9 AS FINISH_POSITION
         , '52' AS OFFICIAL_RATING
         , '2017-06-20' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 1 AS FINISH_POSITION
         , '50' AS OFFICIAL_RATING
         , '2017-07-04' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 3 AS FINISH_POSITION
         , '55' AS OFFICIAL_RATING
         , '2017-07-20' :: DATE AS RATING_DATE   
    UNION ALL
    SELECT 3 AS FINISH_POSITION
         , '48' AS OFFICIAL_RATING
         , '2017-07-29' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 1 AS FINISH_POSITION
         , '58' AS OFFICIAL_RATING
         , '2017-08-15' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 2 AS FINISH_POSITION
         , '60' AS OFFICIAL_RATING
         , '2017-08-20' :: DATE AS RATING_DATE   
    UNION ALL
    SELECT 1 AS FINISH_POSITION
         , '48' AS OFFICIAL_RATING
         , '2017-08-22 ' :: DATE AS RATING_DATE   
    UNION ALL
    SELECT 9 AS FINISH_POSITION
         , '52' AS OFFICIAL_RATING
         , '2017-08-27' :: DATE AS RATING_DATE
    UNION ALL
    SELECT 2 AS FINISH_POSITION
         , NULL AS OFFICIAL_RATING
         , '2017-09-05':: DATE AS RATING_DATE   
    UNION ALL
    SELECT 1 AS FINISH_POSITION
         , '48' AS OFFICIAL_RATING
         , '2017-09-17':: DATE AS RATING_DATE   
    UNION ALL
    SELECT 1 AS FINISH_POSITION
         , '51' AS OFFICIAL_RATING
         , '2017-09-21':: DATE AS RATING_DATE   
    UNION ALL
    SELECT 11 AS FINISH_POSITION
         , '60' AS OFFICIAL_RATING
         , '2017-09-25':: DATE AS RATING_DATE       
    UNION ALL
    SELECT 13 AS FINISH_POSITION
         , '63' AS OFFICIAL_RATING
         , '2017-09-30':: DATE AS RATING_DATE       
    UNION ALL
    SELECT 14 AS FINISH_POSITION
         , '61' AS OFFICIAL_RATING
         , '2017-10-04':: DATE AS RATING_DATE    
    UNION ALL
    SELECT 7 AS FINISH_POSITION
         , '49' AS OFFICIAL_RATING
         , '2017-10-05':: DATE AS RATING_DATE       
    UNION ALL
    SELECT 9 AS FINISH_POSITION
         , NULL AS OFFICIAL_RATING
         , '2017-10-09':: DATE AS RATING_DATE       
    UNION ALL
    SELECT 11 AS FINISH_POSITION
         , '60' AS OFFICIAL_RATING
         , '2017-10-15':: DATE AS RATING_DATE      
)

SELECT T3.FINISH_POSITION AS FINISH_POSITION
     , T3.OFFICIAL_RATING AS OFFICIAL_RATING
     , T3.DATE AS DATE
     , CASE WHEN T3.RATING_OF_1 IS NULL OR T3.OFFICIAL_RATING IS NULL THEN 0
            ELSE CAST(T3.RATING_OF_1 AS INT) - CAST(T3.OFFICIAL_RATING AS INT) 
       END AS DIFFERENCE
FROM 
(

    SELECT L.FINISH_POSITION AS FINISH_POSITION
         , L.OFFICIAL_RATING AS OFFICIAL_RATING
         , L.RATING_DATE AS DATE
         , L.OFFICIAL_RATING AS RATING_OF_1
    FROM LOG AS L
    WHERE L.RATING_DATE < (SELECT MIN(RATING_DATE) 
                           FROM LOG 
                           WHERE FINISH_POSITION = 1) 
    UNION

    SELECT L.FINISH_POSITION AS FINISH_POSITION
         , L.OFFICIAL_RATING AS OFFICIAL_RATING
         , L.RATING_DATE AS DATE
         , L.OFFICIAL_RATING AS RATING_OF_1 
    FROM LOG AS L
    WHERE OFFICIAL_RATING IS NULL

    UNION

    SELECT L.FINISH_POSITION AS FINISH_POSITION
         , L.OFFICIAL_RATING AS OFFICIAL_RATING
         , L.RATING_DATE AS DATE
         , T2.RATING_OF_1 AS RATING_OF_1
    FROM LOG AS L
    LEFT JOIN
    (
        SELECT T1.OFFICIAL_RATING_OF_1 AS RATING_OF_1
             , T1.DATE AS DATE
             , LEAD(T1.DATE) OVER (ORDER BY T1.DATE ASC) AS NEXT_RATEING_OF_1
        FROM (
                 SELECT FINISH_POSITION
                      , OFFICIAL_RATING AS OFFICIAL_RATING_OF_1        
                      , RATING_DATE AS DATE
                 FROM LOG
                 WHERE FINISH_POSITION = 1
              ) AS T1
         WHERE T1.OFFICIAL_RATING_OF_1 IS NOT NULL 
    ) AS T2
    ON L.RATING_DATE > T2.DATE AND L.RATING_DATE < T2.NEXT_RATEING_OF_1 
    WHERE OFFICIAL_RATING IS NOT NULL AND T2.NEXT_RATEING_OF_1 IS NOT NULL

    UNION
    SELECT FINISH_POSITION AS FINISH_POSITION
         , OFFICIAL_RATING AS OFFICIAL_RATING       
         , RATING_DATE AS DATE
         , OFFICIAL_RATING AS OFFICIAL_RATING_OF_1
    FROM LOG
    WHERE FINISH_POSITION = 1
) AS T3

UNION 

SELECT L.FINISH_POSITION AS FINISH_POSITION
     , L.OFFICIAL_RATING AS OFFICIAL_RATING
     , L.RATING_DATE AS DATE
     , CASE WHEN OFFICIAL_RATING IS NULL THEN 0 
            ELSE CAST(T3.RATING_OF_1 AS INT) - CAST(L.OFFICIAL_RATING AS INT) 
       END AS DIFFERENCE
FROM LOG AS L
RIGHT OUTER JOIN 
(
    SELECT DISTINCT
           T2.RATING_OF_1
         , T2.DATE AS DATE
         , T2.NEXT_RATEING_OF_1
    FROM 
    (
        SELECT T1.OFFICIAL_RATING_OF_1 AS RATING_OF_1
             , T1.DATE AS DATE
             , LEAD(T1.DATE) OVER (ORDER BY T1.DATE ASC) AS NEXT_RATEING_OF_1
        FROM (
                 SELECT FINISH_POSITION
                      , OFFICIAL_RATING AS OFFICIAL_RATING_OF_1        
                      , RATING_DATE AS DATE
                 FROM LOG
                 WHERE FINISH_POSITION = 1
             ) AS T1
    ) AS T2
    WHERE T2.NEXT_RATEING_OF_1 IS NULL
) AS T3
ON L.RATING_DATE > T3.DATE

ORDER BY DATE ASC
;

最简单的解决方法是“修剪”：

WITH

Answer 4

Docker可以使用exec命令在正在运行的容器中运行命令：

 docker exec [-d|--detach[=false]] [--help] [-i|--interactive[=false]] [-t|--tty[=false]] CONTAINER COMMAND [ARG...]

停止Nginx Docker容器

4 个答案: