Logrotate - nginx 日志不在 docker 容器内旋转

我有一个运行 nginx 的 docker 容器，它正在将日志写入/var/log/nginxLogrotate 安装在 docker 容器中，并且 nginx 的 logrotate 配置文件已正确设置。尽管如此，logrotate 仍不会自动旋转日志。手动强制日志旋转通过以下方式旋转日志logrotate -f /path/to/conf-file按预期工作。

我的结论是，有些东西没有触发 cron ，但我找不到原因。

这是Dockerfile对于运行 nginx 的 docker 容器：

FROM nginx:1.11

# Remove sym links from nginx image
RUN rm /var/log/nginx/access.log
RUN rm /var/log/nginx/error.log

# Install logrotate
RUN apt-get update && apt-get -y install logrotate

# Copy MyApp nginx config
COPY config/nginx.conf /etc/nginx/nginx.conf

#Copy logrotate nginx configuration
COPY config/logrotate.d/nginx /etc/logrotate.d/

And the docker 撰写 file:

version: '2'
services:
  nginx:
    build: ./build
    restart: always
    ports:
      - "80:80"
      - "443:443"
    volumes:
      - ./auth:/etc/nginx/auth
      - ./certs:/etc/nginx/certs
      - ./conf:/etc/nginx/conf
      - ./sites-enabled:/etc/nginx/sites-enabled
      - ./web:/etc/nginx/web
      - nginx_logs:/var/log/nginx
    logging:
      driver: "json-file"
      options:
        max-size: "100m"
        max-file: "1"

volumes:
  nginx_logs:

networks:
  default:
    external:
      name: my-network

以下是内容：/etc/logrotate.d/nginx

/var/log/nginx/*.log {
        daily
        dateext
        missingok
        rotate 30
        compress
        delaycompress
        notifempty
        create 0640 www-data adm
        sharedscripts
        prerotate
                if [ -d /etc/logrotate.d/httpd-prerotate ]; then \
                        run-parts /etc/logrotate.d/httpd-prerotate; \
                fi \
        endscript
        postrotate
                [ -s /run/nginx.pid ] && kill -USR1 `cat /run/nginx.pid`
        endscript
}

内容/etc/cron.daily/logrotate

#!/bin/sh

test -x /usr/sbin/logrotate || exit 0
/usr/sbin/logrotate /etc/logrotate.conf

内容/etc/logrotate.conf

# see "man logrotate" for details
# rotate log files weekly
weekly

# keep 4 weeks worth of backlogs
rotate 4

# create new (empty) log files after rotating old ones
create

# uncomment this if you want your log files compressed
#compress

# packages drop log rotation information into this directory
include /etc/logrotate.d

# no packages own wtmp, or btmp -- we'll rotate them here
/var/log/wtmp {
    missingok
    monthly
    create 0664 root utmp
    rotate 1
}

/var/log/btmp {
    missingok
    monthly
    create 0660 root utmp
    rotate 1
}

# system-specific logs may be configured here

有人可以指出为什么 nginx 日志没有被 logrotate 自动旋转的正确方向吗？

EDIT

我可以追踪这个问题的根本原因是 cron 服务没有在容器上运行。一个可能的解决方案是想办法让容器同时运行nginx和cron服务。

正如我的问题的编辑所述，问题是CMD from nginx:1.11才刚刚开始nginx过程。解决方法是将以下命令放在我的 Dockerfile 上

CMD service cron start && nginx -g 'daemon off;'

这将启动 nginxnginx:1.11启动它并启动 cron 服务。

Dockerfile 看起来像这样：

FROM nginx:1.11

# Remove sym links from nginx image
RUN rm /var/log/nginx/access.log
RUN rm /var/log/nginx/error.log

# Install logrotate
RUN apt-get update && apt-get -y install logrotate

# Copy MyApp nginx config
COPY config/nginx.conf /etc/nginx/nginx.conf

#Copy logrotate nginx configuration
COPY config/logrotate.d/nginx /etc/logrotate.d/

# Start nginx and cron as a service
CMD service cron start && nginx -g 'daemon off;'