1. 日志驱动

Docker包括多种容器日志记录方式，这个机制又叫做logging drivers。logging driver经常在配置在Docker 守护进程级别，默认的logging driver是json-file. 还支持以下几种级别

Driver	Description
none	No logs are available for the container and docker logs does not return any output.
local	Logs are stored in a custom format designed for minimal overhead.
json-file	The logs are formatted as JSON. The default logging driver for Docker.
syslog	Writes logging messages to the syslog facility. The syslog daemon must be running on the host machine.
journald	Writes log messages to journald. The journald daemon must be running on the host machine.
gelf	Writes log messages to a Graylog Extended Log Format (GELF) endpoint such as Graylog or Logstash.

1.1 查看

 #查看全局
 docker info --format '{{.LoggingDriver}}'
 
 #查看单独
 docker inspect -f '{{.HostConfig.LogConfig.Type}}' CONTAINER

 #查看全局
 docker info --format '{{.LoggingDriver}}'
 
 #查看单独
 docker inspect -f '{{.HostConfig.LogConfig.Type}}' CONTAINER

1.2 模式

1.none

docker container run --name none_logging_driver -it --log-driver none busybox sh -c 'for N in 1 2 3; do echo "Hello $N"; done'

cd /var/lib/docker/containers/$(docker ps --no-trunc -aqf "name=none_logging_driver")

docker logs none_logging_driver
Error response from daemon: configured logging driver does not support reading

docker container run --name none_logging_driver -it --log-driver none busybox sh -c 'for N in 1 2 3; do echo "Hello $N"; done'

cd /var/lib/docker/containers/$(docker ps --no-trunc -aqf "name=none_logging_driver")

docker logs none_logging_driver
Error response from daemon: configured logging driver does not support reading

官当