2020系统综合实践 第2次实践作业

1.实现一个自定义的web容器服务

获取Nginx镜像

• sudo docker pull nginx
  

查看是否已安装了 nginx

• sudo docker image
  

运行nginx容器并查看

• sudo docker run --name nginx-test -p 8080:80 -d nginx 运行容器
• sudo docker container ps 查看正在运行中的容器
  

浏览器访问8080端口查看

• 在浏览器输入localhost:8080
  

查看原来docker的配置信息，用于后面的docker配置。记得复制

• sudo docker exec -it 9fa0577f4261 /bin/bash
• cd /etc/nginx/conf.d
• cat default.conf
  

创建dockerfile文件夹，并在里面添加三个文件，最终结果如下

• default.conf文件内容
  

• dockerfile文件内容
  

• index.html文件内容
  

在dockerfile目录下构建镜像,并查看 . 不要忘记了最后的那个.

• sudo docker build -t frxnginx .
  
• sudo docker ps查看运行中的容器
  

浏览器打开4399端口查看

实现一个自定义的数据库容器服务

总的操作如下，有一些重复的不用管

• vim dockerfile
  

• vim setup.sh
  

• vim schema.sql
  

• vim privileges.sql
  

从镜像库中获取mysql:5.7镜像

• sudo docker pull mysql:5.7
  

启动并登陆mysql 密码为之前设的123456

查看数据库

查看容器配置信息

• sudo docker inspect 42c626319dd7

[
    {
        "Id": "42c626319dd762fcf6fe9191f3db9af7807d6f66484e0297cc3b153f3489b57d",
        "Created": "2020-04-24T14:55:14.97083877Z",
        "Path": "docker-entrypoint.sh",
        "Args": [
            "sh",
            "/mysql/setup.sh"
        ],
        "State": {
            "Status": "running",
            "Running": true,
            "Paused": false,
            "Restarting": false,
            "OOMKilled": false,
            "Dead": false,
            "Pid": 27765,
            "ExitCode": 0,
            "Error": "",
            "StartedAt": "2020-04-24T14:55:19.363204015Z",
            "FinishedAt": "0001-01-01T00:00:00Z"
        },
        "Image": "sha256:80d7096de93b7dffc4be3536dfc8b630b535fa3607b95ef09dd5ff367dcef5b9",
        "ResolvConfPath": "/var/lib/docker/containers/42c626319dd762fcf6fe9191f3db9af7807d6f66484e0297cc3b153f3489b57d/resolv.conf",
        "HostnamePath": "/var/lib/docker/containers/42c626319dd762fcf6fe9191f3db9af7807d6f66484e0297cc3b153f3489b57d/hostname",
        "HostsPath": "/var/lib/docker/containers/42c626319dd762fcf6fe9191f3db9af7807d6f66484e0297cc3b153f3489b57d/hosts",
        "LogPath": "/var/lib/docker/containers/42c626319dd762fcf6fe9191f3db9af7807d6f66484e0297cc3b153f3489b57d/42c626319dd762fcf6fe9191f3db9af7807d6f66484e0297cc3b153f3489b57d-json.log",
        "Name": "/frxmysql",
        "RestartCount": 0,
        "Driver": "overlay2",
        "Platform": "linux",
        "MountLabel": "",
        "ProcessLabel": "",
        "AppArmorProfile": "docker-default",
        "ExecIDs": null,
        "HostConfig": {
            "Binds": null,
            "ContainerIDFile": "",
            "LogConfig": {
                "Type": "json-file",
                "Config": {}
            },
            "NetworkMode": "default",
            "PortBindings": {
                "3306/tcp": [
                    {
                        "HostIp": "",
                        "HostPort": "13306"
                    }
                ]
            },
            "RestartPolicy": {
                "Name": "no",
                "MaximumRetryCount": 0
            },
            "AutoRemove": false,
            "VolumeDriver": "",
            "VolumesFrom": null,
            "CapAdd": null,
            "CapDrop": null,
            "Capabilities": null,
            "Dns": [],
            "DnsOptions": [],
            "DnsSearch": [],
            "ExtraHosts": null,
            "GroupAdd": null,
            "IpcMode": "private",
            "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/overlay2/3ba93095cbb8f89b4fdff6789fc1d16700831c8360b97cd8604573afcf841b3e-init/diff:/var/lib/docker/overlay2/907d072d3db1ec71d56afb75980b4ca63930b24fbed40536a657cd2df24c1185/diff:/var/lib/docker/overlay2/b880834a2feab9fc6514b30c4ed1d94f20ae542ff54020721d35b1f4f488483f/diff:/var/lib/docker/overlay2/0275d239c2dedb306a9a9b2376d6c6a4d231739e52609da222c826acd21a6dcb/diff:/var/lib/docker/overlay2/8677aa25a8565a173294822b5d5e1f33d3b9a3aa97ba0f95c3cf8e33e118e9a6/diff:/var/lib/docker/overlay2/4c2dea19b7c4d2e910a08b5cc2c648533e36d0b957470073b0545dade434f65a/diff:/var/lib/docker/overlay2/ac89b64f05967a4602a703dcb120d977a501593fb2f06b5328831b1f3457a594/diff:/var/lib/docker/overlay2/91fd59fe379fdfd61920ee06e5c6a35e45233428f307eb77d5aad47b33143a64/diff:/var/lib/docker/overlay2/7eb2948fb702216aeb5158a20292cd42ac6021a9786e7b816a587ee2c46893fa/diff:/var/lib/docker/overlay2/fcff0282615055aef0f60be2728483fa4bc2f8c18c95c5225879df70f146e4ab/diff:/var/lib/docker/overlay2/b0dc85566782f7d58612294ed37b35124e2cdd4f42e8f2831d66fb96d22fa259/diff:/var/lib/docker/overlay2/afa841a3a2e1b43bad1d59c989fd28afe6ac6b317046ba85afb37fe68c69e037/diff:/var/lib/docker/overlay2/27a7720b76da88629a7798e733cad2cc76d12bc90ece288249d985328b2e2f65/diff:/var/lib/docker/overlay2/22b6b9c34d3d59c2931942dfc31ef6ac2b7a3e6119752b109cbaab3cad41b61f/diff:/var/lib/docker/overlay2/717ddbcb22e7ad457801a740d7d4423e647c64a456b3aaa2736c5602d3399ace/diff",
                "MergedDir": "/var/lib/docker/overlay2/3ba93095cbb8f89b4fdff6789fc1d16700831c8360b97cd8604573afcf841b3e/merged",
                "UpperDir": "/var/lib/docker/overlay2/3ba93095cbb8f89b4fdff6789fc1d16700831c8360b97cd8604573afcf841b3e/diff",
                "WorkDir": "/var/lib/docker/overlay2/3ba93095cbb8f89b4fdff6789fc1d16700831c8360b97cd8604573afcf841b3e/work"
            },
            "Name": "overlay2"
        },
        "Mounts": [
            {
                "Type": "volume",
                "Name": "699b34d936e76acce362d8eb9051d3d9afb13ef313621ed73463be3090a328ef",
                "Source": "/var/lib/docker/volumes/699b34d936e76acce362d8eb9051d3d9afb13ef313621ed73463be3090a328ef/_data",
                "Destination": "/var/lib/mysql",
                "Driver": "local",
                "Mode": "",
                "RW": true,
                "Propagation": ""
            }
        ],
        "Config": {
            "Hostname": "42c626319dd7",
            "Domainname": "",
            "User": "",
            "AttachStdin": false,
            "AttachStdout": false,
            "AttachStderr": false,
            "ExposedPorts": {
                "3306/tcp": {},
                "33060/tcp": {}
            },
            "Tty": false,
            "OpenStdin": false,
            "StdinOnce": false,
            "Env": [
                "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
                "GOSU_VERSION=1.12",
                "MYSQL_MAJOR=5.7",
                "MYSQL_VERSION=5.7.29-1debian10",
                "MYSQL_ALLOW_EMPTY_PASSWORD=yes"
            ],
            "Cmd": [
                "sh",
                "/mysql/setup.sh"
            ],
            "Image": "frxmysql",
            "Volumes": {
                "/var/lib/mysql": {}
            },
            "WorkingDir": "",
            "Entrypoint": [
                "docker-entrypoint.sh"
            ],
            "OnBuild": null,
            "Labels": {}
        },
        "NetworkSettings": {
            "Bridge": "",
            "SandboxID": "9b403cf73f9226f1d7a573ca6904e69de4aff9645d86f40346715db8f3c43b93",
            "HairpinMode": false,
            "LinkLocalIPv6Address": "",
            "LinkLocalIPv6PrefixLen": 0,
            "Ports": {
                "3306/tcp": [
                    {
                        "HostIp": "0.0.0.0",
                        "HostPort": "13306"
                    }
                ],
                "33060/tcp": null
            },
            "SandboxKey": "/var/run/docker/netns/9b403cf73f92",
            "SecondaryIPAddresses": null,
            "SecondaryIPv6Addresses": null,
            "EndpointID": "aeb281be69dd5dd5794c3727b577b05857c1f5ec7577d9045f0eac52a919e689",
            "Gateway": "172.17.0.1",
            "GlobalIPv6Address": "",
            "GlobalIPv6PrefixLen": 0,
            "IPAddress": "172.17.0.3",
            "IPPrefixLen": 16,
            "IPv6Gateway": "",
            "MacAddress": "02:42:ac:11:00:03",
            "Networks": {
                "bridge": {
                    "IPAMConfig": null,
                    "Links": null,
                    "Aliases": null,
                    "NetworkID": "8def21b9be1c0338e8145e6f287d511dc9d2fd31db49be4173b3787de62defcf",
                    "EndpointID": "aeb281be69dd5dd5794c3727b577b05857c1f5ec7577d9045f0eac52a919e689",
                    "Gateway": "172.17.0.1",
                    "IPAddress": "172.17.0.3",
                    "IPPrefixLen": 16,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "02:42:ac:11:00:03",
                    "DriverOpts": null
                }
            }
        }
    }
]

3.问题与心得体会

• 本次实验在做之前仔细阅读了文档，做起来还算顺利。就是每次在使用docker的时候，前面一定要加入sudo,我看有的同学不加也可以，不知道是什么原因。
• 还有比较重要的一点，在创建docker容器的时候，一定一定要看清楚指令后面需要有【 .】不然不会成功。类似这样