Implementé docker-dind en el clúster k3s de mi homelab. E intente crear imágenes de Docker allí. Sin embargo, recibo un error al ejecutar apt-get updateel comando. Pero ejecutar el comando curl en la misma red y dentro de las docker:dindobras, así como nslookupy ping. Pude realizar apt-get updatebien tareas similares en la máquina host. Probablemente no sea un problema de red.
Mi red no tiene ninguna configuración de proxy.
apt-get updateen un sidecar dibian:bullseyey ubuntu:22.04funciona bien sin problemas. El problema solo se presentó durante la compilación de Docker dentro de Dind.
Intenté implementar una configuración de k3s similar en DigitalOcean Droplet y Docker:dindpod y todo funciona bien.
La imagen que intenté construir es vainilla debian:bullseye. Puedo confirmar que la construcción en otra máquina en la misma red funciona. (Ver ejemplo de Dockerfile a continuación)
Especificaciones del sistema:
OS: Ubuntu 22.04.1 LTS (GNU/Linux 5.15.0-52-generic x86_64)
K3S: v1.25.2+k3s1
Containerd: 1.6.8-k3s1
docker info
Client:
Context: default
Debug Mode: false
Plugins:
buildx: Docker Buildx (Docker Inc., v0.9.1)
compose: Docker Compose (Docker Inc., v2.12.2)
Server:
Containers: 1
Running: 0
Paused: 0
Stopped: 1
Images: 2
Server Version: 20.10.21
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Native Overlay Diff: true
userxattr: false
Logging Driver: json-file
Cgroup Driver: cgroupfs
Cgroup Version: 2
Plugins:
Volume: local
Network: bridge host ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: io.containerd.runc.v2 io.containerd.runtime.v1.linux runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 1c90a442489720eec95342e1789ee8a5e1b9536f
runc version: v1.1.4-0-g5fd4c4d1
init version: de40ad0
Security Options:
apparmor
seccomp
Profile: default
cgroupns
Kernel Version: 5.15.0-52-generic
Operating System: Alpine Linux v3.16 (containerized)
OSType: linux
Architecture: x86_64
CPUs: 48
Total Memory: 62.67GiB
Name: docker-dind-test
ID: 363P:AMIK:KWWZ:KW6T:WMTT:OKJ4:GLN3:NFQW:UCVU:ISRR:CAYJ:42TC
Docker Root Dir: /var/lib/docker
Debug Mode: false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Registry Mirrors:
https://mirror.gcr.io/
Live Restore Enabled: false
Product License: Community Engine
Dockerfile
FROM debian:bullseye
ENV HOME=/root
RUN apt-get update --allow-releaseinfo-change && \
apt-get upgrade -y --fix-missing && \
apt-get install -y --fix-missing --no-install-recommends \
postgresql-client \
curl \
wget \
ca-certificates \
openssl \
libssl-dev
RUN curl -vLI http://deb.debian.org/debian
Docker build logs
Step 1/4 : FROM debian:bullseye
bullseye: Pulling from library/debian
17c9e6141fdb: Pulling fs layer
17c9e6141fdb: Verifying Checksum
17c9e6141fdb: Download complete
17c9e6141fdb: Pull complete
Digest: sha256:bfe6615d017d1eebe19f349669de58cda36c668ef916e618be78071513c690e5
Status: Downloaded newer image for debian:bullseye
---> d8cacd17cfdc
Step 2/4 : ENV HOME=/root
---> Running in 8e91e6ef9c42
Removing intermediate container 8e91e6ef9c42
---> f0df6cfad00b
Step 3/4 : RUN apt-get update --allow-releaseinfo-change && apt-get upgrade -y --fix-missing && apt-get install -y --fix-missing --no-install-recommends postgresql-client curl wget ca-certificates openssl libssl-dev
---> Running in c2fcf3f7da7b
Get:1 http://deb.debian.org/debian bullseye InRelease [116 kB]
Err:1 http://deb.debian.org/debian bullseye InRelease
Connection timed out [IP: 151.101.78.132 80]
Get:2 http://deb.debian.org/debian-security bullseye-security InRelease [48.4 kB]
Err:2 http://deb.debian.org/debian-security bullseye-security InRelease
Connection timed out [IP: 151.101.78.132 80]
docker:dind logs
Generating RSA private key, 4096 bit long modulus (2 primes)
.....................++++
......................................................................................................................................++++
e is 65537 (0x010001)
Generating RSA private key, 4096 bit long modulus (2 primes)
..................++++
................++++
e is 65537 (0x010001)
Signature ok
subject=CN = docker:dind server
Getting CA Private Key
/certs/server/cert.pem: OK
Generating RSA private key, 4096 bit long modulus (2 primes)
.................................................................++++
...........................................++++
e is 65537 (0x010001)
Signature ok
subject=CN = docker:dind client
Getting CA Private Key
/certs/client/cert.pem: OK
time="2022-11-14T15:58:50.449742253Z" level=info msg="Starting up"
time="2022-11-14T15:58:50.451348585Z" level=warning msg="could not change group /var/run/docker.sock to docker: group docker not found"
time="2022-11-14T15:58:50.452345732Z" level=info msg="libcontainerd: started new containerd process" pid=675
time="2022-11-14T15:58:50.452384646Z" level=info msg="parsed scheme: \"unix\"" module=grpc
time="2022-11-14T15:58:50.452394281Z" level=info msg="scheme \"unix\" not registered, fallback to default scheme" module=grpc
time="2022-11-14T15:58:50.452412512Z" level=info msg="ccResolverWrapper: sending update to cc: {[{unix:///var/run/docker/containerd/containerd.sock <nil> 0 <nil>}] <nil> <nil>}" module=grpc
time="2022-11-14T15:58:50.452424664Z" level=info msg="ClientConn switching balancer to \"pick_first\"" module=grpc
time="2022-11-14T15:58:50Z" level=warning msg="containerd config version `1` has been deprecated and will be removed in containerd v2.0, please switch to version `2`, see https://github.com/containerd/containerd/blob/main/docs/PLUGINS.md#version-header"
time="2022-11-14T15:58:50.472503771Z" level=info msg="starting containerd" revision=1c90a442489720eec95342e1789ee8a5e1b9536f version=v1.6.9
time="2022-11-14T15:58:50.489432837Z" level=info msg="loading plugin \"io.containerd.content.v1.content\"..." type=io.containerd.content.v1
time="2022-11-14T15:58:50.489560763Z" level=info msg="loading plugin \"io.containerd.snapshotter.v1.aufs\"..." type=io.containerd.snapshotter.v1
time="2022-11-14T15:58:50.495865825Z" level=info msg="skip loading plugin \"io.containerd.snapshotter.v1.aufs\"..." error="aufs is not supported (modprobe aufs failed: exit status 1 \"ip: can't find device 'aufs'\\nmodprobe: can't change directory to '/lib/modules': No such file or directory\\n\"): skip plugin" type=io.containerd.snapshotter.v1
time="2022-11-14T15:58:50.495898748Z" level=info msg="loading plugin \"io.containerd.snapshotter.v1.btrfs\"..." type=io.containerd.snapshotter.v1
time="2022-11-14T15:58:50.496083409Z" level=info msg="skip loading plugin \"io.containerd.snapshotter.v1.btrfs\"..." error="path /var/lib/docker/containerd/daemon/io.containerd.snapshotter.v1.btrfs (ext4) must be a btrfs filesystem to be used with the btrfs snapshotter: skip plugin" type=io.containerd.snapshotter.v1
time="2022-11-14T15:58:50.496104895Z" level=info msg="loading plugin \"io.containerd.snapshotter.v1.devmapper\"..." type=io.containerd.snapshotter.v1
time="2022-11-14T15:58:50.496118384Z" level=warning msg="failed to load plugin io.containerd.snapshotter.v1.devmapper" error="devmapper not configured"
time="2022-11-14T15:58:50.496148196Z" level=info msg="loading plugin \"io.containerd.snapshotter.v1.native\"..." type=io.containerd.snapshotter.v1
time="2022-11-14T15:58:50.496242442Z" level=info msg="loading plugin \"io.containerd.snapshotter.v1.overlayfs\"..." type=io.containerd.snapshotter.v1
time="2022-11-14T15:58:50.496535560Z" level=info msg="loading plugin \"io.containerd.snapshotter.v1.zfs\"..." type=io.containerd.snapshotter.v1
time="2022-11-14T15:58:50.496656657Z" level=info msg="skip loading plugin \"io.containerd.snapshotter.v1.zfs\"..." error="path /var/lib/docker/containerd/daemon/io.containerd.snapshotter.v1.zfs must be a zfs filesystem to be used with the zfs snapshotter: skip plugin" type=io.containerd.snapshotter.v1
time="2022-11-14T15:58:50.496683278Z" level=info msg="loading plugin \"io.containerd.metadata.v1.bolt\"..." type=io.containerd.metadata.v1
time="2022-11-14T15:58:50.496742065Z" level=warning msg="could not use snapshotter devmapper in metadata plugin" error="devmapper not configured"
time="2022-11-14T15:58:50.496762117Z" level=info msg="metadata content store policy set" policy=shared
time="2022-11-14T15:58:50.500867342Z" level=info msg="loading plugin \"io.containerd.differ.v1.walking\"..." type=io.containerd.differ.v1
time="2022-11-14T15:58:50.500890968Z" level=info msg="loading plugin \"io.containerd.event.v1.exchange\"..." type=io.containerd.event.v1
time="2022-11-14T15:58:50.500911054Z" level=info msg="loading plugin \"io.containerd.gc.v1.scheduler\"..." type=io.containerd.gc.v1
time="2022-11-14T15:58:50.500942937Z" level=info msg="loading plugin \"io.containerd.service.v1.introspection-service\"..." type=io.containerd.service.v1
time="2022-11-14T15:58:50.500959279Z" level=info msg="loading plugin \"io.containerd.service.v1.containers-service\"..." type=io.containerd.service.v1
time="2022-11-14T15:58:50.500980423Z" level=info msg="loading plugin \"io.containerd.service.v1.content-service\"..." type=io.containerd.service.v1
time="2022-11-14T15:58:50.500999583Z" level=info msg="loading plugin \"io.containerd.service.v1.diff-service\"..." type=io.containerd.service.v1
time="2022-11-14T15:58:50.501259889Z" level=info msg="loading plugin \"io.containerd.service.v1.images-service\"..." type=io.containerd.service.v1
time="2022-11-14T15:58:50.501283478Z" level=info msg="loading plugin \"io.containerd.service.v1.leases-service\"..." type=io.containerd.service.v1
time="2022-11-14T15:58:50.501300111Z" level=info msg="loading plugin \"io.containerd.service.v1.namespaces-service\"..." type=io.containerd.service.v1
time="2022-11-14T15:58:50.501314466Z" level=info msg="loading plugin \"io.containerd.service.v1.snapshots-service\"..." type=io.containerd.service.v1
time="2022-11-14T15:58:50.501334903Z" level=info msg="loading plugin \"io.containerd.runtime.v1.linux\"..." type=io.containerd.runtime.v1
time="2022-11-14T15:58:50.501479548Z" level=info msg="loading plugin \"io.containerd.runtime.v2.task\"..." type=io.containerd.runtime.v2
time="2022-11-14T15:58:50.501618443Z" level=info msg="loading plugin \"io.containerd.monitor.v1.cgroups\"..." type=io.containerd.monitor.v1
time="2022-11-14T15:58:50.502676656Z" level=info msg="loading plugin \"io.containerd.service.v1.tasks-service\"..." type=io.containerd.service.v1
time="2022-11-14T15:58:50.502726906Z" level=info msg="loading plugin \"io.containerd.grpc.v1.introspection\"..." type=io.containerd.grpc.v1
time="2022-11-14T15:58:50.502749179Z" level=info msg="loading plugin \"io.containerd.internal.v1.restart\"..." type=io.containerd.internal.v1
time="2022-11-14T15:58:50.502806839Z" level=info msg="loading plugin \"io.containerd.grpc.v1.containers\"..." type=io.containerd.grpc.v1
time="2022-11-14T15:58:50.502829454Z" level=info msg="loading plugin \"io.containerd.grpc.v1.content\"..." type=io.containerd.grpc.v1
time="2022-11-14T15:58:50.502847152Z" level=info msg="loading plugin \"io.containerd.grpc.v1.diff\"..." type=io.containerd.grpc.v1
time="2022-11-14T15:58:50.502862346Z" level=info msg="loading plugin \"io.containerd.grpc.v1.events\"..." type=io.containerd.grpc.v1
time="2022-11-14T15:58:50.502878765Z" level=info msg="loading plugin \"io.containerd.grpc.v1.healthcheck\"..." type=io.containerd.grpc.v1
time="2022-11-14T15:58:50.502895684Z" level=info msg="loading plugin \"io.containerd.grpc.v1.images\"..." type=io.containerd.grpc.v1
time="2022-11-14T15:58:50.502915402Z" level=info msg="loading plugin \"io.containerd.grpc.v1.leases\"..." type=io.containerd.grpc.v1
time="2022-11-14T15:58:50.502931719Z" level=info msg="loading plugin \"io.containerd.grpc.v1.namespaces\"..." type=io.containerd.grpc.v1
time="2022-11-14T15:58:50.502954823Z" level=info msg="loading plugin \"io.containerd.internal.v1.opt\"..." type=io.containerd.internal.v1
time="2022-11-14T15:58:50.503353540Z" level=info msg="loading plugin \"io.containerd.grpc.v1.snapshots\"..." type=io.containerd.grpc.v1
time="2022-11-14T15:58:50.503388785Z" level=info msg="loading plugin \"io.containerd.grpc.v1.tasks\"..." type=io.containerd.grpc.v1
time="2022-11-14T15:58:50.503411978Z" level=info msg="loading plugin \"io.containerd.grpc.v1.version\"..." type=io.containerd.grpc.v1
time="2022-11-14T15:58:50.503433166Z" level=info msg="loading plugin \"io.containerd.tracing.processor.v1.otlp\"..." type=io.containerd.tracing.processor.v1
time="2022-11-14T15:58:50.503457888Z" level=info msg="skip loading plugin \"io.containerd.tracing.processor.v1.otlp\"..." error="no OpenTelemetry endpoint: skip plugin" type=io.containerd.tracing.processor.v1
time="2022-11-14T15:58:50.503490771Z" level=info msg="loading plugin \"io.containerd.internal.v1.tracing\"..." type=io.containerd.internal.v1
time="2022-11-14T15:58:50.503521897Z" level=error msg="failed to initialize a tracing processor \"otlp\"" error="no OpenTelemetry endpoint: skip plugin"
time="2022-11-14T15:58:50.503591536Z" level=info msg="loading plugin \"io.containerd.grpc.v1.cri\"..." type=io.containerd.grpc.v1
time="2022-11-14T15:58:50.503747428Z" level=info msg="Start cri plugin with config {PluginConfig:{ContainerdConfig:{Snapshotter:overlayfs DefaultRuntimeName:runc DefaultRuntime:{Type: Path: Engine: PodAnnotations:[] ContainerAnnotations:[] Root: Options:map[] PrivilegedWithoutHostDevices:false BaseRuntimeSpec: NetworkPluginConfDir: NetworkPluginMaxConfNum:0} UntrustedWorkloadRuntime:{Type: Path: Engine: PodAnnotations:[] ContainerAnnotations:[] Root: Options:map[] PrivilegedWithoutHostDevices:false BaseRuntimeSpec: NetworkPluginConfDir: NetworkPluginMaxConfNum:0} Runtimes:map[runc:{Type:io.containerd.runc.v2 Path: Engine: PodAnnotations:[] ContainerAnnotations:[] Root: Options:map[BinaryName: CriuImagePath: CriuPath: CriuWorkPath: IoGid:0 IoUid:0 NoNewKeyring:false NoPivotRoot:false Root: ShimCgroup: SystemdCgroup:false] PrivilegedWithoutHostDevices:false BaseRuntimeSpec: NetworkPluginConfDir: NetworkPluginMaxConfNum:0}] NoPivot:false DisableSnapshotAnnotations:true DiscardUnpackedLayers:false IgnoreRdtNotEnabledErrors:false} CniConfig:{NetworkPluginBinDir:/opt/cni/bin NetworkPluginConfDir:/etc/cni/net.d NetworkPluginMaxConfNum:1 NetworkPluginConfTemplate: IPPreference:} Registry:{ConfigPath: Mirrors:map[] Configs:map[] Auths:map[] Headers:map[]} ImageDecryption:{KeyModel:node} DisableTCPService:true StreamServerAddress:127.0.0.1 StreamServerPort:0 StreamIdleTimeout:4h0m0s EnableSelinux:false SelinuxCategoryRange:1024 SandboxImage:registry.k8s.io/pause:3.6 StatsCollectPeriod:10 SystemdCgroup:false EnableTLSStreaming:false X509KeyPairStreaming:{TLSCertFile: TLSKeyFile:} MaxContainerLogLineSize:16384 DisableCgroup:false DisableApparmor:false RestrictOOMScoreAdj:false MaxConcurrentDownloads:3 DisableProcMount:false UnsetSeccompProfile: TolerateMissingHugetlbController:true DisableHugetlbController:true DeviceOwnershipFromSecurityContext:false IgnoreImageDefinedVolumes:false NetNSMountsUnderStateDir:false EnableUnprivilegedPorts:false EnableUnprivilegedICMP:false} ContainerdRootDir:/var/lib/docker/containerd/daemon ContainerdEndpoint:/var/run/docker/containerd/containerd.sock RootDir:/var/lib/docker/containerd/daemon/io.containerd.grpc.v1.cri StateDir:/var/run/docker/containerd/daemon/io.containerd.grpc.v1.cri}"
time="2022-11-14T15:58:50.503841080Z" level=info msg="Connect containerd service"
time="2022-11-14T15:58:50.503911541Z" level=info msg="Get image filesystem path \"/var/lib/docker/containerd/daemon/io.containerd.snapshotter.v1.overlayfs\""
time="2022-11-14T15:58:50.504641932Z" level=error msg="failed to load cni during init, please check CRI plugin status before setting up network for pods" error="cni config load failed: no network config found in /etc/cni/net.d: cni plugin not initialized: failed to load cni config"
time="2022-11-14T15:58:50.504786299Z" level=info msg="Start subscribing containerd event"
time="2022-11-14T15:58:50.504883053Z" level=info msg="Start recovering state"
time="2022-11-14T15:58:50.504990905Z" level=info msg="Start event monitor"
time="2022-11-14T15:58:50.505019110Z" level=info msg="Start snapshots syncer"
time="2022-11-14T15:58:50.505036477Z" level=info msg="Start cni network conf syncer for default"
time="2022-11-14T15:58:50.505051308Z" level=info msg="Start streaming server"
time="2022-11-14T15:58:50.505078162Z" level=info msg=serving... address=/var/run/docker/containerd/containerd-debug.sock
time="2022-11-14T15:58:50.505196784Z" level=info msg=serving... address=/var/run/docker/containerd/containerd.sock.ttrpc
time="2022-11-14T15:58:50.505306098Z" level=info msg=serving... address=/var/run/docker/containerd/containerd.sock
time="2022-11-14T15:58:50.505343374Z" level=info msg="containerd successfully booted in 0.033579s"
time="2022-11-14T15:58:50.517625486Z" level=info msg="Setting the storage driver from the $DOCKER_DRIVER environment variable (overlay2)"
time="2022-11-14T15:58:50.517827929Z" level=info msg="parsed scheme: \"unix\"" module=grpc
time="2022-11-14T15:58:50.517846193Z" level=info msg="scheme \"unix\" not registered, fallback to default scheme" module=grpc
time="2022-11-14T15:58:50.517866712Z" level=info msg="ccResolverWrapper: sending update to cc: {[{unix:///var/run/docker/containerd/containerd.sock <nil> 0 <nil>}] <nil> <nil>}" module=grpc
time="2022-11-14T15:58:50.517880223Z" level=info msg="ClientConn switching balancer to \"pick_first\"" module=grpc
time="2022-11-14T15:58:50.518938275Z" level=info msg="parsed scheme: \"unix\"" module=grpc
time="2022-11-14T15:58:50.518974718Z" level=info msg="scheme \"unix\" not registered, fallback to default scheme" module=grpc
time="2022-11-14T15:58:50.519034405Z" level=info msg="ccResolverWrapper: sending update to cc: {[{unix:///var/run/docker/containerd/containerd.sock <nil> 0 <nil>}] <nil> <nil>}" module=grpc
time="2022-11-14T15:58:50.519059990Z" level=info msg="ClientConn switching balancer to \"pick_first\"" module=grpc
time="2022-11-14T15:58:50.543863597Z" level=info msg="Loading containers: start."
time="2022-11-14T15:58:50.599392629Z" level=info msg="Default bridge (docker0) is assigned with an IP address 172.17.0.0/16. Daemon option --bip can be used to set a preferred IP address"
time="2022-11-14T15:58:50.631332394Z" level=info msg="Loading containers: done."
time="2022-11-14T15:58:50.641948188Z" level=info msg="Docker daemon" commit=3056208 graphdriver(s)=overlay2 version=20.10.21
time="2022-11-14T15:58:50.642094877Z" level=info msg="Daemon has completed initialization"
time="2022-11-14T15:58:50.667636348Z" level=info msg="API listen on /var/run/docker.sock"
time="2022-11-14T15:58:50.675740617Z" level=info msg="API listen on [::]:2376"
time="2022-11-14T16:00:51.843715103Z" level=info msg="Layer sha256:903e1ef39c915239bdee0efa6d2524604ab820fec073b9e34748c9703040dfa5 cleaned up"
time="2022-11-14T16:00:51.913459982Z" level=info msg="loading plugin \"io.containerd.event.v1.publisher\"..." runtime=io.containerd.runc.v2 type=io.containerd.event.v1
time="2022-11-14T16:00:51.913558196Z" level=info msg="loading plugin \"io.containerd.internal.v1.shutdown\"..." runtime=io.containerd.runc.v2 type=io.containerd.internal.v1
time="2022-11-14T16:00:51.913578733Z" level=info msg="loading plugin \"io.containerd.ttrpc.v1.task\"..." runtime=io.containerd.runc.v2 type=io.containerd.ttrpc.v1
time="2022-11-14T16:00:51.913895838Z" level=info msg="starting signal loop" namespace=moby path=/run/docker/containerd/daemon/io.containerd.runtime.v2.task/moby/f6414ce7601f27bce0762e94ff1cbf32879cb21d25da7dd11fa957ecc1986c37 pid=950 runtime=io.containerd.runc.v2
time="2022-11-14T16:03:28.439293599Z" level=info msg="ignoring event" container=f6414ce7601f27bce0762e94ff1cbf32879cb21d25da7dd11fa957ecc1986c37 module=libcontainerd namespace=moby topic=/tasks/delete type="*events.TaskDelete"
time="2022-11-14T16:03:28.439526418Z" level=info msg="shim disconnected" id=f6414ce7601f27bce0762e94ff1cbf32879cb21d25da7dd11fa957ecc1986c37
time="2022-11-14T16:03:28.439623591Z" level=warning msg="cleaning up after shim disconnected" id=f6414ce7601f27bce0762e94ff1cbf32879cb21d25da7dd11fa957ecc1986c37 namespace=moby
time="2022-11-14T16:03:28.439653563Z" level=info msg="cleaning up dead shim"
time="2022-11-14T16:03:28.488341728Z" level=warning msg="cleanup warnings time=\"2022-11-14T16:03:28Z\" level=info msg=\"starting signal loop\" namespace=moby pid=1060 runtime=io.containerd.runc.v2\n"
Docker Dind K8s Pod
apiVersion: v1
kind: Pod
metadata:
name: docker-dind-test
spec:
volumes:
- name: docker-certs-client
emptyDir:
medium: Memory
- name: docker-certs-ca
emptyDir:
medium: Memory
- name: sample-dockerfile
configMap:
name: dockerfile
containers:
- name: docker-shell
image: docker:20-cli
command:
- sh
- '-c'
- "sleep 36000"
env:
- name: DOCKER_HOST
value: tcp://docker:2376
- name: LC_ALL
value: en_US.UTF-8
- name: DOCKER_TLS_CERTDIR
value: /certs
- name: DOCKER_TLS_VERIFY
value: '0'
- name: DOCKER_CERT_PATH
value: /certs/client
- name: DOCKER_DRIVER
value: overlay2
- name: IMAGE_NAME
value: test-docker-image
volumeMounts:
- name: docker-certs-client
mountPath: /certs/client
- name: docker-certs-ca
mountPath: /certs/ca
- name: sample-dockerfile
mountPath: /code
readOnly: false
securityContext:
capabilities:
drop:
- NET_RAW
privileged: true
- name: docker-dind
image: docker:20-dind
args:
- '--registry-mirror=https://mirror.gcr.io'
- '--cri-containerd'
env:
- name: DOCKER_HOST
value: tcp://docker:2376
- name: LC_ALL
value: en_US.UTF-8
- name: DOCKER_TLS_CERTDIR
value: /certs
- name: DOCKER_TLS_VERIFY
value: '1'
- name: DOCKER_CERT_PATH
value: /certs/client
- name: DOCKER_DRIVER
value: overlay2
volumeMounts:
- name: docker-certs-client
mountPath: /certs/client
- name: docker-certs-ca
mountPath: /certs/ca
- name: sample-dockerfile
mountPath: /code
readOnly: false
securityContext:
capabilities:
drop:
- NET_RAW
privileged: true
- name: debian-shell
image: debian:bullseye
command:
- sh
- '-c'
- "sleep 36000"
- name: ubuntu-shell
image: ubuntu:22.04
command:
- sh
- '-c'
- "sleep 36000"
dnsPolicy: ClusterFirst
hostAliases:
- ip: 127.0.0.1
hostnames:
- docker
curl -IL http://deb.debian.org/debian
HTTP/1.1 302 Found
Connection: keep-alive
Content-Length: 277
Server: Apache
X-Content-Type-Options: nosniff
X-Frame-Options: sameorigin
Referrer-Policy: no-referrer
X-Xss-Protection: 1
Permissions-Policy: interest-cohort=()
Location: http://ftp.debian.org/debian/
Content-Type: text/html; charset=iso-8859-1
Via: 1.1 varnish, 1.1 varnish
Accept-Ranges: bytes
Date: Mon, 14 Nov 2022 17:12:02 GMT
Age: 0
X-Served-By: cache-ams21054-AMS, cache-hkg17920-HKG
X-Cache: HIT, MISS
X-Cache-Hits: 4, 0
X-Timer: S1668445922.866768,VS0,VE175
HTTP/1.1 200 OK
Connection: keep-alive
Content-Length: 6415
Server: Apache
X-Content-Type-Options: nosniff
X-Frame-Options: sameorigin
Referrer-Policy: no-referrer
X-Xss-Protection: 1
Permissions-Policy: interest-cohort=()
X-Clacks-Overhead: GNU Terry Pratchett
Content-Type: text/html;charset=UTF-8
Via: 1.1 varnish, 1.1 varnish
Accept-Ranges: bytes
Date: Mon, 14 Nov 2022 17:12:02 GMT
Age: 0
X-Served-By: cache-ams12782-AMS, cache-hkg17925-HKG
X-Cache: HIT, MISS
X-Cache-Hits: 7, 0
X-Timer: S1668445922.339227,VS0,VE174
Vary: Accept-Encoding
Respuesta1
Enfrenté este problema específico Docker DIND cannot apt-get update but curl worksy descubrí que docker:dindestá basado en Alpine Linux y no en Ubuntu/Debian Linux.
Así que tuve que reemplazarlo apt-get installcon apk addpara que mis scripts de instalación funcionaran.
Respuesta2
Actualización sobre el problema actual, mencionado por @kupson
La configuración de MTU de hecho resolvió este problema.
- name: docker-dind
image: docker:20-dind
args:
- '--registry-mirror=https://mirror.gcr.io'
- '--cri-containerd'
- '--mtu=1450'
Respuesta3
Parece que su servidor Linux se está quedando sin memoria.
Esto se puede notar por la declaración "RestrictOOMScoreAdj" que se refiere a un archivo presente en /proc/$pid/oom_score_adj.
Cuando su máquina Linux se queda sin memoria, el asesino de memoria insuficiente (OOM) es un proceso llamado por el kernel de Linux para liberar algo de memoria. A menudo se encuentra en servidores que tienen en ejecución varios procesos que consumen mucha memoria.
Puede solucionar este problema agregando más memoria a su máquina, ya sea finalizando manualmente los servicios expandibles o configurando una partición SAWP en su sistema.