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我检查了这个answer，但它似乎并不适合我。Ubuntu 14.04上的Docker守护进程日志在哪里？
以下是关于系统的信息：
~ $ /usr/bin/lsb_release -d
Description: Ubuntu 14.04.4 LTS
~ $ docker info
Containers: 2
Running: 1
Paused: 0
Stopped: 1
Images: 54
Server Version: 1.11.2
Storage Driver: aufs
Root Dir: /var/lib/docker/aufs
Backing Filesystem: extfs
Dirs: 62
Dirperm1 Supported: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge null host
Kernel Version: 3.16.0-73-generic
Operating System: Ubuntu 14.04.4 LTS
OSType: linux
Architecture: x86_64
CPUs: 2
Total Memory: 3.86 GiB
Name: ncooprider-tron
ID: MXYF:MYLL:QD3U:VT7L:RIAK:DOZR:RAYR:7ZD6:7ODV:R4E3:MFEU:BQBE
Docker Root Dir: /var/lib/docker
Debug mode (client): false
Debug mode (server): false
Registry: https://index.docker.io/v1/
WARNING: No swap limit support
~ $ uname -a
Linux ncooprider-tron 3.16.0-73-generiC#95~14.04.1-Ubuntu SMP Thu Jun 9 08:00:04 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
有在/var/log没有upstart目录，我没有在我的路径journalctl命令。当我查看Docker守护进程时，它说它由init（PID 1作为父节点）启动，并具有--raw-logs参数。
谢谢！