컨테이너 로그 위치
/var/lib/docker/<CON_ID>/<CON-ID>-json.log
기본 로그 플러그인
json-file
로그 확인
docker logs <CON>
-f: Live View
unix time
-m, --memory bytes Memory limit
-c, --cpu-shares int CPU shares (relative weight)
--cpus decimal Number of CPUs
--device-read-bps list Limit read rate (bytes per second) from a device (default [])
--device-read-iops list Limit read rate (IO per second) from a device (default [])
--device-write-bps list Limit write rate (bytes per second) to a device (default [])
--device-write-iops list Limit write rate (IO per second) to a device (default [])
디스크 대역폭 확인
dd if=/dev/zero of=a.out bs=1M count=100 oflags=direct
컨테이너 --> 호스트
docker cp CONTAINER:SRC_PATH DEST_PATH
호스트 --> 컨테이너
docker cp SRC_PATH CONTAINER:DEST_PATH
docker commit -m "MESSAGE" <CONTAINER> <IMAGE>:<TAG>
docker inspect -f "{{.Config.Cmd}}" apache:v1
docker run -it --name con1 centos
필요한 애플리케이션 복사/설치
> yum install -y httpd
> echo "<h1>hello container</h1>" > /var/www/html/index.html
> ctrl-p - ctrl-q
이미지 생성(commit)
docker commit -m 'Add Apache Web Server' con1 apache:v1
docker run -d --name web1 apache:v1 /usr/sbin/httpd -DFOREGROUND
docker ps
docker inspect web1 (IP 확인)
curl http://172.17.0.X
컨테이너 재실행
docker run -itd --name webcon apache:v1
이미지 재생성
docker commit -m 'Change Command' -c "CMD /usr/sbin/httpd -DFOREGROUND" webcon apache:v1.1
이미지 CMD 확인
docker inspect -f "{{.Config.Cmd}}" apache:v1.1
docker diff <Container>
docker run -it --name webtemp1 ubuntu
> apt update && apt install -y apache2
> echo "<h1>hello container</h1>" > /var/www/html/index.html
> ctrl-p+q
docker commit -m 'Add Apache2 packages' -c 'CMD /usr/sbin/apache2ctl -DFOREGROUND' webtemp1 ubuntu-apache:v1
docker history <IMAGE>
docker inspect -f "{{.GraphDriver.Data.UpperDir}}" <IMAGE>
sudo -i
cd /var/lib/docker/overlay2/<ID>/diff
Local Image --save--> File
File --load--> Local Image
Running Container --export--> File
File --import--> Local Image
docker tag <Local IMAGE>:<TAG> <NEW IMAGE>:<NEW TAG>