docker学习笔记（二）

Docker常用命令

今天我们继续来学Docker的命令/(ㄒoㄒ)/~~

docker inspect

语法：docker inspect ContainerId/NAME作用：获取容器/镜像的元数据

例子：

docker inspect elasticsearch:7.7.1 [ { "Id": "sha256:830a894845e39d20e413d8a824ba1f7562d76a02cf9a85a8b6d1d9d47a4d5dd3", "RepoTags": [ "elasticsearch:7.7.1" ], "RepoDigests": [ "elasticsearch@sha256:dff614393a31b93e8bbe9f8d1a77be041da37eac2a7a9567166dd5a2abab7c67" ], "Parent": "", "Comment": "", "Created": "2020-05-28T16:35:24.240322241Z", "Container": "a5f5c958558a9b015c3b57d3d625c478fd2c1d37e62dad4cb51a23862b59dfdb", "ContainerConfig": { "Hostname": "a5f5c958558a", "Domainname": "", "User": "", "AttachStdin": false, "AttachStdout": false, "AttachStderr": false, "ExposedPorts": { "9200/tcp": {}, "9300/tcp": {} }, "Tty": false, "OpenStdin": false, "StdinOnce": false, "Env": [ "PATH=/usr/share/elasticsearch/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin", "ELASTIC_CONTAINER=true" ], "Cmd": [ "/bin/sh", "-c", "#(nop) ", "CMD [\"eswrapper\"]" ], "Image": "sha256:9a105291472c67a41cd4ed711e3db5e87f6073550fd1402f9cb8e70597abe019", "Volumes": null, "WorkingDir": "/usr/share/elasticsearch", "Entrypoint": [ "/tini", "--", "/usr/local/bin/docker-entrypoint.sh" ], "OnBuild": null, "Labels": { "org.label-schema.build-date": "2020-05-28T16:30:01.040088Z", "org.label-schema.license": "Elastic-License", "org.label-schema.name": "Elasticsearch", "org.label-schema.schema-version": "1.0", "org.label-schema.url": "https://www.elastic.co/products/elasticsearch", "org.label-schema.usage": "https://www.elastic.co/guide/en/elasticsearch/reference/index.html", "org.label-schema.vcs-ref": "ad56dce891c901a492bb1ee393f12dfff473a423", "org.label-schema.vcs-url": "https://github.com/elastic/elasticsearch", "org.label-schema.vendor": "Elastic", "org.label-schema.version": "7.7.1", "org.opencontainers.image.created": "2020-05-28T16:30:01.040088Z", "org.opencontainers.image.documentation": "https://www.elastic.co/guide/en/elasticsearch/reference/index.html", "org.opencontainers.image.licenses": "Elastic-License", "org.opencontainers.image.revision": "ad56dce891c901a492bb1ee393f12dfff473a423", "org.opencontainers.image.source": "https://github.com/elastic/elasticsearch", "org.opencontainers.image.title": "Elasticsearch", "org.opencontainers.image.url": "https://www.elastic.co/products/elasticsearch", "org.opencontainers.image.vendor": "Elastic", "org.opencontainers.image.version": "7.7.1" } },.......

docker cp

语法：docker cp CONTAINER:SRC_PATH DEST_PATH

作用：将容器中文件拷往主机

语法：docker cp SRC_PATH CONTAINER:DEST_PATH

作用：将主机的文件拷往容器

例子：将本地的elasticsearch.yml拷往容器的/usr/share/elasticsearch/co nfig/ 文件夹

docker cp E:/elasticsearch-7.3.2-no-jdk-windows-x86_64/elasticsearch-7.3.2/config/elasticsearch.yml 83bba1b53fff:/usr/share/elasticsearch/co nfig/

例子：将容器的elasticsearch.yml拷往主机的桌面

docker cp 83bba1b53fff:/usr/share/elasticsearch/config/elasticsearch.yml C:/Users/ZJ/Desktop/

docker logs

命令： docker logs [OPTIONS] CONTAINERID作用：获取容器的日志 选项作用–details显示更多的信息-f, --follow跟踪实时日志–since string显示自某个timestamp之后的日志，或相对时间，如42m（即42分钟）–tail string从日志末尾显示多少行日志， 默认是all-t, --timestamps显示时间戳–until string显示自某个timestamp之前的日志，或相对时间，如42m（即42分钟）

例子：跟踪实时日志，只显示最后5行

docker logs -f -t --tail=5 83bba1b53fff

例子：显示最近30分钟的日志

docker logs --since=30m 83bba1b53fff

例子：显示2020年7月1日以后的日志

docker logs -t --since="2020-07-01" 83bba1b53fff

例子：显示2020年7月1日至2020年7月2日时间段的日志

docker logs -t --since="2020-07-01" --until "2020-07-02" 83bba1b53fff

docker exec

命令:docker exec [OPTIONS] CONTAINER COMMAND [ARG…]作用：在运行的容器中执行命令 选项作用-d在后台运行-i即使没有附加也保持STDIN 打开-t分配一个伪终端

例子

$ docker exec -it 941a819f5832 echo -e "Hello nginx" Hello nginx

命令小备份：

docker exec 83bba1b53fff cat /usr/share/elasticsearch/config/elasticsearch.yml

$ docker run --name=test_es -d -p 9200:9200 -p 9300:9300 docker.io/elasticsearch:7.7.1