当我使用以下命令登录docker kubernetes仪表板时：
docker exec -it ecd3ff5051df /bin/bash
引发此错误：
OCI runtime exec failed: exec failed: container_linux.go:345: starting container process caused "exec: \"/bin/bash\": stat /bin/bash: no such file or directory": unknown
我正在互联网上搜索，并使用sh告诉我默认的Alpline，然后我尝试这样登录：
docker exec -it ecd3ff5051df /bin/sh
引发此错误：
OCI runtime exec failed: exec failed: container_linux.go:345: starting container process caused "exec: \"/bin/sh\": stat /bin/sh: no such file or directory": unknown
问题出在哪里？谢谢。这是我的码头工人信息：
[root@log001 ~]# docker inspect 47c0c3b512cb
[
{
"Id": "47c0c3b512cbc15e7db1753d1d255346532e5f94b5b013da70074cffd6ea70ff",
"Created": "2019-09-22T10:40:59.197328264Z",
"Path": "/dashboard",
"Args": [
"--insecure-bind-address=0.0.0.0",
"--bind-address=0.0.0.0",
"--auto-generate-certificates"
],
"State": {
"Status": "running",
"Running": true,
"Paused": false,
"Restarting": false,
"OOMKilled": false,
"Dead": false,
"Pid": 22632,
"ExitCode": 0,
"Error": "",
"StartedAt": "2019-09-22T10:40:59.680933289Z",
"FinishedAt": "0001-01-01T00:00:00Z"
},
"Image": "sha256:f9aed6605b814b69e92dece6a50ed1e4e730144eb1cc971389dde9cb3820d124",
"ResolvConfPath": "/var/lib/docker/containers/ecd3ff5051df0ed2a8b8bc5e2145dfcbf630d834cdb35572230d1a5cb4d60852/resolv.conf",
"HostnamePath": "/var/lib/docker/containers/ecd3ff5051df0ed2a8b8bc5e2145dfcbf630d834cdb35572230d1a5cb4d60852/hostname",
"HostsPath": "/opt/k8s/k8s/kubelet/pods/9b8ba20d-f379-4b83-8d85-5901f26308c7/etc-hosts",
"LogPath": "/var/lib/docker/containers/47c0c3b512cbc15e7db1753d1d255346532e5f94b5b013da70074cffd6ea70ff/47c0c3b512cbc15e7db1753d1d255346532e5f94b5b013da70074cffd6ea70ff-json.log",
"Name": "/k8s_kubernetes-dashboard_kubernetes-dashboard-74d7cc788-mk9c7_kube-system_9b8ba20d-f379-4b83-8d85-5901f26308c7_2",
"RestartCount": 0,
"Driver": "overlay2",
"Platform": "linux",
"MountLabel": "",
"ProcessLabel": "",
"AppArmorProfile": "",
"ExecIDs": null,
"HostConfig": {
"Binds": [
"/opt/k8s/k8s/kubelet/pods/9b8ba20d-f379-4b83-8d85-5901f26308c7/volumes/kubernetes.io~secret/kubernetes-dashboard-certs:/certs:ro",
"/opt/k8s/k8s/kubelet/pods/9b8ba20d-f379-4b83-8d85-5901f26308c7/volumes/kubernetes.io~empty-dir/tmp-volume:/tmp",
"/opt/k8s/k8s/kubelet/pods/9b8ba20d-f379-4b83-8d85-5901f26308c7/volumes/kubernetes.io~secret/kubernetes-dashboard-token-pmxpf:/var/run/secrets/kubernetes.io/serviceaccount:ro",
"/opt/k8s/k8s/kubelet/pods/9b8ba20d-f379-4b83-8d85-5901f26308c7/etc-hosts:/etc/hosts",
"/opt/k8s/k8s/kubelet/pods/9b8ba20d-f379-4b83-8d85-5901f26308c7/containers/kubernetes-dashboard/50339ad7:/dev/termination-log"
],
"ContainerIDFile": "",
"LogConfig": {
"Type": "json-file",
"Config": {}
},
"NetworkMode": "container:ecd3ff5051df0ed2a8b8bc5e2145dfcbf630d834cdb35572230d1a5cb4d60852",
"PortBindings": null,
"RestartPolicy": {
"Name": "no",
"MaximumRetryCount": 0
},
"AutoRemove": false,
"VolumeDriver": "",
"VolumesFrom": null,
"CapAdd": null,
"CapDrop": null,
"Dns": null,
"DnsOptions": null,
"DnsSearch": null,
"ExtraHosts": null,
"GroupAdd": null,
"IpcMode": "container:ecd3ff5051df0ed2a8b8bc5e2145dfcbf630d834cdb35572230d1a5cb4d60852",
"Cgroup": "",
"Links": null,
"OomScoreAdj": -998,
"PidMode": "",
"Privileged": false,
"PublishAllPorts": false,
"ReadonlyRootfs": false,
"SecurityOpt": null,
"UTSMode": "",
"UsernsMode": "",
"ShmSize": 67108864,
"Runtime": "runc",
"ConsoleSize": [
0,
0
],
"Isolation": "",
"CpuShares": 51,
"Memory": 314572800,
"NanoCpus": 0,
"CgroupParent": "/kubepods/burstable/pod9b8ba20d-f379-4b83-8d85-5901f26308c7",
"BlkioWeight": 0,
"BlkioWeightDevice": null,
"BlkioDeviceReadBps": null,
"BlkioDeviceWriteBps": null,
"BlkioDeviceReadIOps": null,
"BlkioDeviceWriteIOps": null,
"CpuPeriod": 100000,
"CpuQuota": 10000,
"CpuRealtimePeriod": 0,
"CpuRealtimeRuntime": 0,
"CpusetCpus": "",
"CpusetMems": "",
"Devices": [],
"DeviceCgroupRules": null,
"DiskQuota": 0,
"KernelMemory": 0,
"MemoryReservation": 0,
"MemorySwap": 314572800,
"MemorySwappiness": null,
"OomKillDisable": false,
"PidsLimit": 0,
"Ulimits": null,
"CpuCount": 0,
"CpuPercent": 0,
"IOMaximumIOps": 0,
"IOMaximumBandwidth": 0,
"MaskedPaths": [
"/proc/acpi",
"/proc/kcore",
"/proc/keys",
"/proc/latency_stats",
"/proc/timer_list",
"/proc/timer_stats",
"/proc/sched_debug",
"/proc/scsi",
"/sys/firmware"
],
"ReadonlyPaths": [
"/proc/asound",
"/proc/bus",
"/proc/fs",
"/proc/irq",
"/proc/sys",
"/proc/sysrq-trigger"
]
},
"GraphDriver": {
"Data": {
"LowerDir": "/var/lib/docker/overlay2/9f0d685998ea4b8fce36e79ddb90f33b115d4d12468845a08472d350f29d8c52-init/diff:/var/lib/docker/overlay2/32329fe5a56eea9514b732989f53864544c8bf24c97fb53ace9cbc82784e67d2/diff",
"MergedDir": "/var/lib/docker/overlay2/9f0d685998ea4b8fce36e79ddb90f33b115d4d12468845a08472d350f29d8c52/merged",
"UpperDir": "/var/lib/docker/overlay2/9f0d685998ea4b8fce36e79ddb90f33b115d4d12468845a08472d350f29d8c52/diff",
"WorkDir": "/var/lib/docker/overlay2/9f0d685998ea4b8fce36e79ddb90f33b115d4d12468845a08472d350f29d8c52/work"
},
"Name": "overlay2"
},
"Mounts": [
{
"Type": "bind",
"Source": "/opt/k8s/k8s/kubelet/pods/9b8ba20d-f379-4b83-8d85-5901f26308c7/volumes/kubernetes.io~empty-dir/tmp-volume",
"Destination": "/tmp",
"Mode": "",
"RW": true,
"Propagation": "rprivate"
},
{
"Type": "bind",
"Source": "/opt/k8s/k8s/kubelet/pods/9b8ba20d-f379-4b83-8d85-5901f26308c7/volumes/kubernetes.io~secret/kubernetes-dashboard-token-pmxpf",
"Destination": "/var/run/secrets/kubernetes.io/serviceaccount",
"Mode": "ro",
"RW": false,
"Propagation": "rprivate"
},
{
"Type": "bind",
"Source": "/opt/k8s/k8s/kubelet/pods/9b8ba20d-f379-4b83-8d85-5901f26308c7/etc-hosts",
"Destination": "/etc/hosts",
"Mode": "",
"RW": true,
"Propagation": "rprivate"
},
{
"Type": "bind",
"Source": "/opt/k8s/k8s/kubelet/pods/9b8ba20d-f379-4b83-8d85-5901f26308c7/containers/kubernetes-dashboard/50339ad7",
"Destination": "/dev/termination-log",
"Mode": "",
"RW": true,
"Propagation": "rprivate"
},
{
"Type": "bind",
"Source": "/opt/k8s/k8s/kubelet/pods/9b8ba20d-f379-4b83-8d85-5901f26308c7/volumes/kubernetes.io~secret/kubernetes-dashboard-certs",
"Destination": "/certs",
"Mode": "ro",
"RW": false,
"Propagation": "rprivate"
}
],
"Config": {
"Hostname": "kubernetes-dashboard-74d7cc788-mk9c7",
"Domainname": "",
"User": "0",
"AttachStdin": false,
"AttachStdout": false,
"AttachStderr": false,
"ExposedPorts": {
"8443/tcp": {},
"9090/tcp": {}
},
"Tty": false,
"OpenStdin": false,
"StdinOnce": false,
"Env": [
"KUBERNETES_PORT=tcp://10.254.0.1:443",
"KUBE_DNS_SERVICE_PORT_DNS_TCP=53",
"KUBE_DNS_PORT_53_UDP_PORT=53",
"KUBERNETES_DASHBOARD_PORT_443_TCP_PROTO=tcp",
"KUBE_DNS_SERVICE_PORT_DNS=53",
"KUBE_DNS_SERVICE_PORT_METRICS=9153",
"KUBE_DNS_PORT_53_UDP=udp://10.254.0.2:53",
"KUBE_DNS_PORT_53_UDP_ADDR=10.254.0.2",
"KUBERNETES_SERVICE_PORT_HTTPS=443",
"KUBERNETES_PORT_443_TCP_PORT=443",
"KUBERNETES_DASHBOARD_SERVICE_PORT=443",
"KUBERNETES_DASHBOARD_PORT=tcp://10.254.75.193:443",
"KUBERNETES_DASHBOARD_PORT_443_TCP=tcp://10.254.75.193:443",
"KUBE_DNS_SERVICE_HOST=10.254.0.2",
"KUBE_DNS_PORT_53_TCP_PORT=53",
"KUBE_DNS_PORT_9153_TCP=tcp://10.254.0.2:9153",
"KUBERNETES_PORT_443_TCP=tcp://10.254.0.1:443",
"KUBERNETES_PORT_443_TCP_ADDR=10.254.0.1",
"KUBERNETES_DASHBOARD_SERVICE_HOST=10.254.75.193",
"KUBE_DNS_PORT_9153_TCP_ADDR=10.254.0.2",
"KUBERNETES_DASHBOARD_PORT_443_TCP_ADDR=10.254.75.193",
"KUBE_DNS_SERVICE_PORT=53",
"KUBE_DNS_PORT_9153_TCP_PORT=9153",
"KUBE_DNS_PORT_53_UDP_PROTO=udp",
"KUBE_DNS_PORT_53_TCP_PROTO=tcp",
"KUBE_DNS_PORT_53_TCP=tcp://10.254.0.2:53",
"KUBERNETES_SERVICE_PORT=443",
"KUBERNETES_PORT_443_TCP_PROTO=tcp",
"KUBE_DNS_PORT=udp://10.254.0.2:53",
"KUBERNETES_SERVICE_HOST=10.254.0.1",
"KUBE_DNS_PORT_9153_TCP_PROTO=tcp",
"KUBERNETES_DASHBOARD_PORT_443_TCP_PORT=443",
"KUBE_DNS_PORT_53_TCP_ADDR=10.254.0.2",
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
],
"Cmd": [
"--auto-generate-certificates"
],
"Healthcheck": {
"Test": [
"NONE"
]
},
"Image": "sha256:f9aed6605b814b69e92dece6a50ed1e4e730144eb1cc971389dde9cb3820d124",
"Volumes": null,
"WorkingDir": "",
"Entrypoint": [
"/dashboard",
"--insecure-bind-address=0.0.0.0",
"--bind-address=0.0.0.0"
],
"OnBuild": null,
"Labels": {
"annotation.io.kubernetes.container.hash": "b11195e",
"annotation.io.kubernetes.container.ports": "[{\"containerPort\":8443,\"protocol\":\"TCP\"}]",
"annotation.io.kubernetes.container.restartCount": "2",
"annotation.io.kubernetes.container.terminationMessagePath": "/dev/termination-log",
"annotation.io.kubernetes.container.terminationMessagePolicy": "File",
"annotation.io.kubernetes.pod.terminationGracePeriod": "30",
"io.kubernetes.container.logpath": "/var/log/pods/kube-system_kubernetes-dashboard-74d7cc788-mk9c7_9b8ba20d-f379-4b83-8d85-5901f26308c7/kubernetes-dashboard/2.log",
"io.kubernetes.container.name": "kubernetes-dashboard",
"io.kubernetes.docker.type": "container",
"io.kubernetes.pod.name": "kubernetes-dashboard-74d7cc788-mk9c7",
"io.kubernetes.pod.namespace": "kube-system",
"io.kubernetes.pod.uid": "9b8ba20d-f379-4b83-8d85-5901f26308c7",
"io.kubernetes.sandbox.id": "ecd3ff5051df0ed2a8b8bc5e2145dfcbf630d834cdb35572230d1a5cb4d60852",
"maintainer": "Piotr Bryk <bryk@google.com>"
}
},
"NetworkSettings": {
"Bridge": "",
"SandboxID": "",
"HairpinMode": false,
"LinkLocalIPv6Address": "",
"LinkLocalIPv6PrefixLen": 0,
"Ports": {},
"SandboxKey": "",
"SecondaryIPAddresses": null,
"SecondaryIPv6Addresses": null,
"EndpointID": "",
"Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"IPAddress": "",
"IPPrefixLen": 0,
"IPv6Gateway": "",
"MacAddress": "",
"Networks": {}
}
}
]
答案 0 :(得分：2)
您根本无法docker exec或kubectl exec进入该容器，因为它没有任何可运行的交互式工具。
不要求Docker映像包含外壳程序或任何其他调试工具，尤其是在基于Go的二进制文件中，具有 only 包含的最小映像的情况并不少见。应用程序，绝对没有。
如果您查看dashboard Dockerfile，就会发现它的结构为
FROM scratch
ADD . /
scratch基本映像中根本没有任何内容-没有外壳，没有库，也没有任何内容。因此，官方仪表板图像中唯一的东西就是来自Kubernetes源代码树的东西。没有/bin/sh或/bin/bash（甚至没有/bin目录）。