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1. Use k8s inside Minikube

  • issue


Error: INSTALLATION FAILED: Kubernetes cluster unreachable: Get "https://kubernetes.docker.internal:6443/version": dial tcp 127.0.0.1:6443: connect: connection refused

or

I0512 09:50:11.168857   94624 versioner.go:58] Get "https://kubernetes.docker.internal:6443/version?timeout=5s": dial tcp 127.0.0.1:6443: connect: connection refused

or


$ kubectl get pod
I0512 09:45:27.254675   94077 versioner.go:58] Get "https://kubernetes.docker.internal:6443/version?timeout=5s": dial tcp 127.0.0.1:6443: connect: connection refused
E0512 09:45:27.703949   94077 memcache.go:265] couldn't get current server API group list: Get "https://kubernetes.docker.internal:6443/api?timeout=32s": dial tcp 127.0.0.1:6443: connect: connection refused
E0512 09:45:27.707127   94077 memcache.go:265] couldn't get current server API group list: Get "https://kubernetes.docker.internal:6443/api?timeout=32s": dial tcp 127.0.0.1:6443: connect: connection refused
E0512 09:45:27.708628   94077 memcache.go:265] couldn't get current server API group list: Get "https://kubernetes.docker.internal:6443/api?timeout=32s": dial tcp 127.0.0.1:6443: connect: connection refused
E0512 09:45:27.710322   94077 memcache.go:265] couldn't get current server API group list: Get "https://kubernetes.docker.internal:6443/api?timeout=32s": dial tcp 127.0.0.1:6443: connect: connection refused
E0512 09:45:27.711565   94077 memcache.go:265] couldn't get current server API group list: Get "https://kubernetes.docker.internal:6443/api?timeout=32s": dial tcp 127.0.0.1:6443: connect: connection refused
The connection to the server kubernetes.docker.internal:6443 was refused - did you specify the right host or port?

  • fix

  • install minikube + hyperkit

    • brew install minikube
    • brew install hyperkit

  • start minikube using hyperkit (it will start kubeclt cluster inside minikube)

    • minikube start --driver=hyperkit
    • if error , then delete and start minikube delete -> minikube start --driver=hyperkit
    • check minikube status
$ minikube status
minikube
type: Control Plane
host: Running
kubelet: Running
apiserver: Running
kubeconfig: Configured
  • set kubectl to use minikube
    • kubectl config use-context minikube
    • minikube update-context
  • run kubectl command
    • kubectl get pod
    • kubectl get pod --context legacy-prod --namespace fk-sp-slm-legacy-adapter
fix error - Remote kubernetes server unreachable
  • error : because minikube not started
$ kubectl get pod --context legacy-prod --namespace fk-sp-slm-legacy-adapter
  
I0515 10:02:18.380226   20050 versioner.go:56] Remote kubernetes server unreachable
I0515 10:02:23.582148   20051 versioner.go:56] Remote kubernetes server unreachable
  • fix : start minikube
$ minikube status
minikube
type: Control Plane
host: Stopped
kubelet: Stopped
apiserver: Stopped
kubeconfig: Stopped
  
  
$ minikube start --driver=hyperkit

😄  minikube v1.30.1 on Darwin 12.6.5
✨  Using the hyperkit driver based on existing profile
👍  Starting control plane node minikube in cluster minikube
🔄  Restarting existing hyperkit VM for "minikube" ...
🐳  Preparing Kubernetes v1.26.3 on Docker 20.10.23 ...
🔗  Configuring bridge CNI (Container Networking Interface) ...
🔎  Verifying Kubernetes components...
    ▪ Using image gcr.io/k8s-minikube/storage-provisioner:v5
🌟  Enabled addons: storage-provisioner, default-storageclass
🏄  Done! kubectl is now configured to use "minikube" cluster and "default" namespace by default

  
$ minikube status
minikube
type: Control Plane
host: Running
kubelet: Running
apiserver: Running
kubeconfig: Configured

2. Use Docker inside Minikube

  • optinal step: to work with docker

    • brew install docker (this will install docker engine not docker desktop)
    • eval $(minikube docker-env)
      • Minikube includes a Docker daemon inside its VM
      • Now our local terminal Docker CLI will interact with the Docker daemon inside the Minikube VM
    • run docker images or docker ps -a ✅
my mac commands output 
$ brew install minikube
Running `brew update --auto-update`...
==> Auto-updated Homebrew!
Updated 4 taps (derailed/k9s, homebrew/cask-fonts, homebrew/core and homebrew/cask).
==> New Formulae
jet                               lpeg                              nerdfix                           quantum++                         ssocr                             staq                              svlint                            svls
==> New Casks
1kc-razer                                                           genesys-cloud                                                       music-remote                                                        shureplus-motiv
asix-ax88179                                                        hdhomerun                                                           music-widget                                                        synology-cloud-station-backup
bose-updater                                                        hp-easy-start                                                       nordic-nrf-command-line-tools                                       synology-photo-station-uploader
caldigit-docking-utility                                            huiontablet                                                         obsbot-webcam                                                       synology-surveillance-station-client
caldigit-thunderbolt-charging                                       insta360-studio                                                     opal                                                                synologyassistant
concept2-utility                                                    jabra-direct                                                        pallotron-yubiswitch                                                tiptoi-manager
creative                                                            konica-minolta-bizhub-c759-c658-c368-c287-c3851-driver              philips-hue-sync                                                    volta
eobcanka                                                            lg-onscreen-control                                                 pololu-avr-programmer-v2                                            wacom-tablet
focusrite-control                                                   linn-konfig                                                         qflipper                                                            zsa-wally
font-noto-sans-chorasmian                                           logitune                                                            saleae-logic
fractal-bot                                                         music-miniplayer                                                    samsung-portable-ssd-t7

You have 27 outdated formulae and 2 outdated casks installed.

Warning: minikube 1.30.1 is already installed and up-to-date.
To reinstall 1.30.1, run:
  brew reinstall minikube

# yadav.hariom @ BLRETV-C02F52AP in ~/git_code/async-profiler-2.9-macos [9:39:49]
$ minikube start

😄  minikube v1.30.1 on Darwin 12.6.5
🆕  Kubernetes 1.26.3 is now available. If you would like to upgrade, specify: --kubernetes-version=v1.26.3
✨  Using the hyperkit driver based on existing profile

🤷  Exiting due to PROVIDER_HYPERKIT_NOT_FOUND: The 'hyperkit' provider was not found: exec: "hyperkit": executable file not found in $PATH
💡  Suggestion: Run 'brew install hyperkit'
📘  Documentation: https://minikube.sigs.k8s.io/docs/reference/drivers/hyperkit/


# yadav.hariom @ BLRETV-C02F52AP in ~/git_code/async-profiler-2.9-macos [9:40:14] C:65
$ brew install hyperkit
==> Fetching dependencies for hyperkit: libev
==> Fetching libev
==> Downloading https://ghcr.io/v2/homebrew/core/libev/manifests/4.33
#=#=-  #       #                                                                                                                                                                                                                                               #=O#-     #       ######################################################################################################################################################################################################################################################### 100.0%
==> Downloading https://ghcr.io/v2/homebrew/core/libev/blobs/sha256:de9342ba34cfa8c2f8863a92eb7aced34652c302328f8a593a449d183c9fe1e0
==> Downloading from https://pkg-containers.githubusercontent.com/ghcr1/blobs/sha256:de9342ba34cfa8c2f8863a92eb7aced34652c302328f8a593a449d183c9fe1e0?se=2023-05-12T04%3A20%3A00Z&sig=sT2gjt9rN6bQyy3cqXJhJCg%2BUPCyn0vSj42YAvQQE0o%3D&sp=r&spr=https&sr=b&sv=2019-12-12
#=#=-  #       #                                                                                                                                                                                                                                               #=O#-     #       ######################################################################################################################################################################################################################################################### 100.0%
==> Fetching hyperkit
==> Downloading https://ghcr.io/v2/homebrew/core/hyperkit/manifests/0.20210107
#=#=-  #       #                                                                                                                                                                                                                                               #=O#-     #        #                                                                                                                                                                                                                                           -#O=- #      #          #           ######################################################################################################################################################################################################################################################### 100.0%
==> Downloading https://ghcr.io/v2/homebrew/core/hyperkit/blobs/sha256:da3b0d0374a85af5c649c86fb7796c1eecae468f5783bbb994a96d807e60712a
==> Downloading from https://pkg-containers.githubusercontent.com/ghcr1/blobs/sha256:da3b0d0374a85af5c649c86fb7796c1eecae468f5783bbb994a96d807e60712a?se=2023-05-12T04%3A20%3A00Z&sig=a4rXkQqSisGvbaXHvr1nBbM4aVJVr69wrKxhMsvq0MY%3D&sp=r&spr=https&sr=b&sv=2019-12-12
######################################################################################################################################################################################################################################################### 100.0%
==> Installing dependencies for hyperkit: libev
==> Installing hyperkit dependency: libev
==> Pouring libev--4.33.monterey.bottle.tar.gz
🍺  /usr/local/Cellar/libev/4.33: 12 files, 483.4KB
==> Installing hyperkit
==> Pouring hyperkit--0.20210107.monterey.bottle.tar.gz
🍺  /usr/local/Cellar/hyperkit/0.20210107: 5 files, 4.6MB
==> Running `brew cleanup hyperkit`...
Disable this behaviour by setting HOMEBREW_NO_INSTALL_CLEANUP.
Hide these hints with HOMEBREW_NO_ENV_HINTS (see `man brew`).

# yadav.hariom @ BLRETV-C02F52AP in ~/git_code/async-profiler-2.9-macos [9:41:11]
$ minikube start --driver=hyperkit

😄  minikube v1.30.1 on Darwin 12.6.5
🆕  Kubernetes 1.26.3 is now available. If you would like to upgrade, specify: --kubernetes-version=v1.26.3
✨  Using the hyperkit driver based on existing profile
💿  Downloading VM boot image ...
    > minikube-v1.30.1-amd64.iso....:  65 B / 65 B [---------] 100.00% ? p/s 0s
    > minikube-v1.30.1-amd64.iso:  282.84 MiB / 282.84 MiB  100.00% 7.98 MiB p/
👍  Starting control plane node minikube in cluster minikube
💾  Downloading Kubernetes v1.22.1 preload ...
    > preloaded-images-k8s-v18-v1...:  406.64 MiB / 406.64 MiB  100.00% 4.39 Mi
🔄  Restarting existing hyperkit VM for "minikube" ...
^C

# yadav.hariom @ BLRETV-C02F52AP in ~/git_code/async-profiler-2.9-macos [9:48:48] C:130
$ minikube start --driver=hyperkit

😄  minikube v1.30.1 on Darwin 12.6.5
🆕  Kubernetes 1.26.3 is now available. If you would like to upgrade, specify: --kubernetes-version=v1.26.3
✨  Using the hyperkit driver based on existing profile
👍  Starting control plane node minikube in cluster minikube
🔄  Restarting existing hyperkit VM for "minikube" ...

❌  Exiting due to RUNTIME_ENABLE: Failed to enable container runtime: sudo systemctl restart docker: Process exited with status 1
stdout:

stderr:
Job for docker.service failed because the control process exited with error code.
See "systemctl status docker.service" and "journalctl -xe" for details.


╭───────────────────────────────────────────────────────────────────────────────────────────╮
│                                                                                           │
│    😿  If the above advice does not help, please let us know:                             │
│    👉  https://github.com/kubernetes/minikube/issues/new/choose                           │
│                                                                                           │
│    Please run `minikube logs --file=logs.txt` and attach logs.txt to the GitHub issue.    │
│                                                                                           │
╰───────────────────────────────────────────────────────────────────────────────────────────╯


# yadav.hariom @ BLRETV-C02F52AP in ~/git_code/async-profiler-2.9-macos [9:50:41] C:90
$ docker --version
Docker version 23.0.3-rd, build d2f4735

# yadav.hariom @ BLRETV-C02F52AP in ~/git_code/async-profiler-2.9-macos [9:52:31]
$ minikube delete
🔥  Deleting "minikube" in hyperkit ...
💀  Removed all traces of the "minikube" cluster.

# yadav.hariom @ BLRETV-C02F52AP in ~/git_code/async-profiler-2.9-macos [9:53:43]
$ minikube start --driver=hyperkit

😄  minikube v1.30.1 on Darwin 12.6.5
✨  Using the hyperkit driver based on user configuration
👍  Starting control plane node minikube in cluster minikube
💾  Downloading Kubernetes v1.26.3 preload ...
    > preloaded-images-k8s-v18-v1...:  397.02 MiB / 397.02 MiB  100.00% 11.48 M
🔥  Creating hyperkit VM (CPUs=2, Memory=4000MB, Disk=20000MB) ...
🐳  Preparing Kubernetes v1.26.3 on Docker 20.10.23 ...
    ▪ Generating certificates and keys ...
    ▪ Booting up control plane ...
    ▪ Configuring RBAC rules ...
🔗  Configuring bridge CNI (Container Networking Interface) ...
    ▪ Using image gcr.io/k8s-minikube/storage-provisioner:v5
🔎  Verifying Kubernetes components...
🌟  Enabled addons: default-storageclass, storage-provisioner
🏄  Done! kubectl is now configured to use "minikube" cluster and "default" namespace by default

# yadav.hariom @ BLRETV-C02F52AP in ~/git_code/async-profiler-2.9-macos [9:58:15]
$ minikube status
minikube
type: Control Plane
host: Running
kubelet: Running
apiserver: Running
kubeconfig: Configured


kubectl config use-context minikube


$ minikube update-context
🎉  "minikube" context has been updated to point to 192.168.205.3:8443
💗  Current context is "minikube"


$ which hyperkit
/usr/local/bin/hyperkit
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Hariom Yadav
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