docker基础之二搭建实验环境

环境选择：

内核

uname -r
3.10.0-957.el7.x86_64

系统

cat /etc/redhat-release 
CentOS Linux release 7.6.1810 (Core)

源

wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo -O /etc/yum.repos.d/docker-ce.repo

安装

yum install docker-ce

配置阿里镜像加速

vi /etc/docker/daemon.json
{
  "registry-mirrors": ["https://i5vp5biq.mirror.aliyuncs.com"]
}

启动

systemctl start docker

测试hello-world

docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
1b930d010525: Pull complete 
Digest: sha256:6540fc08ee6e6b7b63468dc3317e3303aae178cb8a45ed3123180328bcc1d20f
Status: Downloaded newer image for hello-world:latest

Hello from Docker!
This message shows that your installation appears to be working correctly.

To generate this message, Docker took the following steps:
 1. The Docker client contacted the Docker daemon.
 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
    (amd64)
 3. The Docker daemon created a new container from that image which runs the
    executable that produces the output you are currently reading.
 4. The Docker daemon streamed that output to the Docker client, which sent it
    to your terminal.

To try something more ambitious, you can run an Ubuntu container with:
 $ docker run -it ubuntu bash

Share images, automate workflows, and more with a free Docker ID:
 https://hub.docker.com/

For more examples and ideas, visit:
 https://docs.docker.com/get-started/

运行时，已经将镜像下载到docker host节点

docker image ls hello-world
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
hello-world         latest              fce289e99eb9        7 months ago        1.84kB

查看docker host上运行的容器

docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES

　　或docker container ls

查看docker host上所有状态的容器

docker ps -a
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS                     PORTS               NAMES
2af23ccba8b6        hello-world         "/hello"            5 minutes ago       Exited (0) 5 minutes ago                       jovial_babbage

　　或docker container ls -a

发现状态为Exited？

这是由于容器的生命周期与容器启动时所运行的程序有关，程序执行结束，即exited状态

运行第一个容器

docker run -d -p 80:80 httpd
Unable to find image 'httpd:latest' locally
latest: Pulling from library/httpd
f5d23c7fed46: Pull complete 
b083c5fd185b: Pull complete 
bf5100a89e78: Pull complete 
98f47fcaa52f: Pull complete 
622a9dd8cfed: Pull complete 
Digest: sha256:dc4c86bc90593c6e4c5b06872a7a363fc7d4eec99c5d6bfac881f7371adcb2c4
Status: Downloaded newer image for httpd:latest
e73baa43840a78ab1489804f20ba10e4b4f6e53bb519d9d2492365bc9d3128e6
[root@nas5 ~]# docker ps
CONTAINER ID        IMAGE               COMMAND              CREATED             STATUS              PORTS                NAMES
e73baa43840a        httpd               "httpd-foreground"   6 seconds ago       Up 4 seconds        0.0.0.0:80->80/tcp   clever_maxwell
[root@nas5 ~]# docker port clever_maxwell
80/tcp -> 0.0.0.0:80

netstat -tnlp |grep :80
tcp6       0      0 :::80                   :::*                    LISTEN      52038/docker-proxy

docker inspect clever_maxwell
[
    {
        "Id": "e73baa43840a78ab1489804f20ba10e4b4f6e53bb519d9d2492365bc9d3128e6",
        "Created": "2019-07-29T02:14:28.746024176Z",
        "Path": "httpd-foreground",
        "Args": [],
        "State": {
            "Status": "running",
            "Running": true,
            "Paused": false,
            "Restarting": false,
            "OOMKilled": false,
            "Dead": false,
            "Pid": 52122,
            "ExitCode": 0,
            "Error": "",
            "StartedAt": "2019-07-29T02:14:29.915889413Z",
            "FinishedAt": "0001-01-01T00:00:00Z"
        },
        "Image": "sha256:ee39f68eb241fd811887da7e21425ac657074363daa9969b9519504785f5d60d",
        "ResolvConfPath": "/var/lib/docker/containers/e73baa43840a78ab1489804f20ba10e4b4f6e53bb519d9d2492365bc9d3128e6/resolv.conf",
        "HostnamePath": "/var/lib/docker/containers/e73baa43840a78ab1489804f20ba10e4b4f6e53bb519d9d2492365bc9d3128e6/hostname",
        "HostsPath": "/var/lib/docker/containers/e73baa43840a78ab1489804f20ba10e4b4f6e53bb519d9d2492365bc9d3128e6/hosts",
        "LogPath": "/var/lib/docker/containers/e73baa43840a78ab1489804f20ba10e4b4f6e53bb519d9d2492365bc9d3128e6/e73baa43840a78ab1489804f20ba10e4b4f6e53bb519d9d2492365bc9d3128e6-json.log",
        "Name": "/clever_maxwell",
        "RestartCount": 0,
        "Driver": "overlay2",
        "Platform": "linux",
        "MountLabel": "",
        "ProcessLabel": "",
        "AppArmorProfile": "",
        "ExecIDs": null,
        "HostConfig": {
            "Binds": null,
            "ContainerIDFile": "",
            "LogConfig": {
                "Type": "json-file",
                "Config": {}
            },
            "NetworkMode": "default",
            "PortBindings": {
                "80/tcp": [
                    {
                        "HostIp": "",
                        "HostPort": "80"
                    }
                ]
            },
            "RestartPolicy": {
                "Name": "no",
                "MaximumRetryCount": 0
            },
            "AutoRemove": false,
            "VolumeDriver": "",
            "VolumesFrom": null,
            "CapAdd": null,
            "CapDrop": null,
            "Capabilities": null,
            "Dns": [],
            "DnsOptions": [],
            "DnsSearch": [],
            "ExtraHosts": null,
            "GroupAdd": null,
            "IpcMode": "shareable",
            "Cgroup": "",
            "Links": null,
            "OomScoreAdj": 0,
            "PidMode": "",
            "Privileged": false,
            "PublishAllPorts": false,
            "ReadonlyRootfs": false,
            "SecurityOpt": null,
            "UTSMode": "",
            "UsernsMode": "",
            "ShmSize": 67108864,
            "Runtime": "runc",
            "ConsoleSize": [
                0,
                0
            ],
            "Isolation": "",
            "CpuShares": 0,
            "Memory": 0,
            "NanoCpus": 0,
            "CgroupParent": "",
            "BlkioWeight": 0,
            "BlkioWeightDevice": [],
            "BlkioDeviceReadBps": null,
            "BlkioDeviceWriteBps": null,
            "BlkioDeviceReadIOps": null,
            "BlkioDeviceWriteIOps": null,
            "CpuPeriod": 0,
            "CpuQuota": 0,
            "CpuRealtimePeriod": 0,
            "CpuRealtimeRuntime": 0,
            "CpusetCpus": "",
            "CpusetMems": "",
            "Devices": [],
            "DeviceCgroupRules": null,
            "DeviceRequests": null,
            "KernelMemory": 0,
            "KernelMemoryTCP": 0,
            "MemoryReservation": 0,
            "MemorySwap": 0,
            "MemorySwappiness": null,
            "OomKillDisable": false,
            "PidsLimit": null,
            "Ulimits": null,
            "CpuCount": 0,
            "CpuPercent": 0,
            "IOMaximumIOps": 0,
            "IOMaximumBandwidth": 0,
            "MaskedPaths": [
                "/proc/asound",
                "/proc/acpi",
                "/proc/kcore",
                "/proc/keys",
                "/proc/latency_stats",
                "/proc/timer_list",
                "/proc/timer_stats",
                "/proc/sched_debug",
                "/proc/scsi",
                "/sys/firmware"
            ],
            "ReadonlyPaths": [
                "/proc/bus",
                "/proc/fs",
                "/proc/irq",
                "/proc/sys",
                "/proc/sysrq-trigger"
            ]
        },
        "GraphDriver": {
            "Data": {
                "LowerDir": "/var/lib/docker/overlay2/deb4aefe4017d1fe67576730d10882fb808b52b520fbf1b68e7df6cb0b3245ae-init/diff:/var/lib/docker/overlay2/c5cc525148310472b925ca2f7fa9b1a431205346e1110c15bb135e1fcdbf3c0f/diff:/var/lib/docker/overlay2/490b5ac074374d35e4426f439f4edb1ef8eb4b7d36d2802f278c1414ca9f2f44/diff:/var/lib/docker/overlay2/4152a9f7537fbb4fcacbe7b789304704a0d046b0df2ebbf2ec45cfc911eb76b4/diff:/var/lib/docker/overlay2/12e13e8e4a4fd9832c1b0f7650e3d768f5d1fa2ac163e26bc02d6d7918c543bd/diff:/var/lib/docker/overlay2/f3c853feeb71177b58a5064449ad2e2c9a24ca1d3b0727f97419a553f5526c57/diff",
                "MergedDir": "/var/lib/docker/overlay2/deb4aefe4017d1fe67576730d10882fb808b52b520fbf1b68e7df6cb0b3245ae/merged",
                "UpperDir": "/var/lib/docker/overlay2/deb4aefe4017d1fe67576730d10882fb808b52b520fbf1b68e7df6cb0b3245ae/diff",
                "WorkDir": "/var/lib/docker/overlay2/deb4aefe4017d1fe67576730d10882fb808b52b520fbf1b68e7df6cb0b3245ae/work"
            },
            "Name": "overlay2"
        },
        "Mounts": [],
        "Config": {
            "Hostname": "e73baa43840a",
            "Domainname": "",
            "User": "",
            "AttachStdin": false,
            "AttachStdout": false,
            "AttachStderr": false,
            "ExposedPorts": {
                "80/tcp": {}
            },
            "Tty": false,
            "OpenStdin": false,
            "StdinOnce": false,
            "Env": [
                "PATH=/usr/local/apache2/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
                "HTTPD_PREFIX=/usr/local/apache2",
                "HTTPD_VERSION=2.4.39",
                "HTTPD_SHA256=b4ca9d05773aa59b54d66cd8f4744b945289f084d3be17d7981d1783a5decfa2",
                "HTTPD_PATCHES="
            ],
            "Cmd": [
                "httpd-foreground"
            ],
            "Image": "httpd",
            "Volumes": null,
            "WorkingDir": "/usr/local/apache2",
            "Entrypoint": null,
            "OnBuild": null,
            "Labels": {}
        },
        "NetworkSettings": {
            "Bridge": "",
            "SandboxID": "84db26d88c0c4cbe93c7e8549e3936e137aee148e4fd210177b4cfd015da5b01",
            "HairpinMode": false,
            "LinkLocalIPv6Address": "",
            "LinkLocalIPv6PrefixLen": 0,
            "Ports": {
                "80/tcp": [
                    {
                        "HostIp": "0.0.0.0",
                        "HostPort": "80"
                    }
                ]
            },
            "SandboxKey": "/var/run/docker/netns/84db26d88c0c",
            "SecondaryIPAddresses": null,
            "SecondaryIPv6Addresses": null,
            "EndpointID": "5df947d9388e12188f49a940fe096afd1b4dfa51af1cdce66dfc943d9ee10f53",
            "Gateway": "172.17.0.1",
            "GlobalIPv6Address": "",
            "GlobalIPv6PrefixLen": 0,
            "IPAddress": "172.17.0.2",
            "IPPrefixLen": 16,
            "IPv6Gateway": "",
            "MacAddress": "02:42:ac:11:00:02",
            "Networks": {
                "bridge": {
                    "IPAMConfig": null,
                    "Links": null,
                    "Aliases": null,
                    "NetworkID": "6444736e5856f5e4ffe462e3a243fc5fe1255464ccfaafcfe0ef38151ff4a633",
                    "EndpointID": "5df947d9388e12188f49a940fe096afd1b4dfa51af1cdce66dfc943d9ee10f53",
                    "Gateway": "172.17.0.1",
                    "IPAddress": "172.17.0.2",
                    "IPPrefixLen": 16,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "02:42:ac:11:00:02",
                    "DriverOpts": null
                }
            }
        }
    }
]

posted @ 2020-09-08 10:45 larlly 阅读(312) 评论(0) 收藏举报

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docker基础之二搭建实验环境

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