New_docker_数据卷

数据持久化演变

docker run -d --name n1 -p 81:80 nginx:1.16

docker container exec -it n1 /bin/bash

echo 'test'>index.html

手工交互

docker container cp index.html n1:/usr/share/nginx/html/

docker container cp  n1:/usr/share/nginx/html/index.html ./

挂载方式

mkdir /H && echo 'H'>/H/index.html

docker stop n1

docker rm n1
docker run --name n1 -p 81:80 -d -v /H:/usr/share/nginx/html nginx:1.16 

一般情况下：日志，数据，数据库做持久化

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批量持久化

mkdir -p /opt/Volume/{a,b}

touch /opt/Volume/a/a.txt

touch /opt/Volume/b/b.txt

docker run -d --name n0 -v /opt/Volume/a:/opt/a -v /opt/Volume/b:/opt/b nginx:1.16    用来做挂载模板 容器名称为n0

docker run -d -p 8081:80 --volumes-from n0 --name n1 nginx:1.16   使用模板n0 :--volumes-from n0

 docker run -d -p 8082:80 --volumes-from n0 --name n2 nginx:1.16 

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[root@test1 ~]# docker exec -it n1 /bin/bash
root@40ccd4412369:/# cd /opt/
root@40ccd4412369:/opt# ls
a b
root@40ccd4412369:/opt# ls a b
a:
a.txt

b:
b.txt
root@40ccd4412369:/opt#

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