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https://github.com/githubfoam/k8s-calico-remote-sandbox
k8s calico Init Containers
https://github.com/githubfoam/k8s-calico-remote-sandbox
calico init-containers k8s
Last synced: about 1 month ago
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k8s calico Init Containers
- Host: GitHub
- URL: https://github.com/githubfoam/k8s-calico-remote-sandbox
- Owner: githubfoam
- License: gpl-3.0
- Created: 2020-01-24T09:08:14.000Z (almost 5 years ago)
- Default Branch: master
- Last Pushed: 2020-01-24T10:37:26.000Z (almost 5 years ago)
- Last Synced: 2023-04-24T15:39:43.461Z (over 1 year ago)
- Topics: calico, init-containers, k8s
- Homepage:
- Size: 24.4 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# kubernetes sandbox
cross platform(freebsd,lin,win,mac..etc)
~~~~
>vagrant up
vagrant global-status
id name provider state directory
-----------------------------------------------------------------------------------------------------------
c34c93c k8s-master01 virtualbox running C:/multimachine/kubernetes-sandbox-remote
adb4ffe worker01 virtualbox running C:/multimachine/kubernetes-sandbox-remote
2e21187 worker02 virtualbox running C:/multimachine/kubernetes-sandbox-remote
b39b49d remotecontrol01 virtualbox running C:/multimachine/kubernetes-sandbox-remote
>vagrant ssh remotecontrol01
sudo ansible-playbook -i /vagrant/kube-cluster/hosts /vagrant/kube-cluster/1_initial.yml
sudo ansible-playbook -i /vagrant/kube-cluster/hosts /vagrant/kube-cluster/2_kube-dependencies.yml
sudo ansible-playbook -i /vagrant/kube-cluster/hosts /vagrant/kube-cluster/3_masters.yml
sudo ansible-playbook -i /vagrant/kube-cluster/hosts /vagrant/kube-cluster/4_workers.yml
vagrant ssh k8s-master01
$ kubectl get nodes
NAME STATUS ROLES AGE VERSION
k8s-master01 Ready master 10m v1.17.0
worker01 Ready 6m54s v1.17.0
worker02 Ready 6m58s v1.17.0
$ kubectl get pods --all-namespaces
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system calico-kube-controllers-55754f75c-kckwb 1/1 Running 0 19m
kube-system calico-node-6qhgc 1/1 Running 7 19m
kube-system calico-node-8648z 1/1 Running 0 11m
kube-system calico-node-m4thf 1/1 Running 0 11m
kube-system coredns-5644d7b6d9-2844c 1/1 Running 0 19m
kube-system coredns-5644d7b6d9-2dwp2 1/1 Running 0 19m
kube-system etcd-k8s-master01 1/1 Running 0 18m
kube-system kube-apiserver-k8s-master01 1/1 Running 0 19m
kube-system kube-controller-manager-k8s-master01 1/1 Running 0 18m
kube-system kube-proxy-2cwcx 1/1 Running 0 11m
kube-system kube-proxy-7xbfz 1/1 Running 0 11m
kube-system kube-proxy-dfgxk 1/1 Running 0 19m
kube-system kube-scheduler-k8s-master01 1/1 Running 0 18m
vagrant@k8s-master01:~$ docker version
Client: Docker Engine - Community
Version: 19.03.4
API version: 1.40
Go version: go1.12.10
Git commit: 9013bf583a
Built: Fri Oct 18 15:53:51 2019
OS/Arch: linux/amd64
Experimental: false
Server: Docker Engine - Community
Engine:
Version: 19.03.4
API version: 1.40 (minimum version 1.12)
Go version: go1.12.10
Git commit: 9013bf583a
Built: Fri Oct 18 15:52:23 2019
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.2.10
GitCommit: b34a5c8af56e510852c35414db4c1f4fa6172339
runc:
Version: 1.0.0-rc8+dev
GitCommit: 3e425f80a8c931f88e6d94a8c831b9d5aa481657
docker-init:
Version: 0.18.0
GitCommit: fec3683
~~~~
upgrade kubernetes
~~~~
vagrant ssh k8s-master01
$ kubectl get nodes
$ apt-cache madison kubelet | more
kubelet | 1.16.2-00 | https://apt.kubernetes.io kubernetes-xenial/main amd64 Packages
vagrant@k8s-master01:~$ apt-cache madison kubelet | more
kubelet | 1.17.2-00 | http://apt.kubernetes.io kubernetes-xenial/main amd64 Packages
kubelet | 1.17.1-00 | http://apt.kubernetes.io kubernetes-xenial/main amd64 Packages
kubelet | 1.17.0-00 | http://apt.kubernetes.io kubernetes-xenial/main amd64 Packages
kubelet | 1.16.6-00 | http://apt.kubernetes.io kubernetes-xenial/main amd64 Packages
kubelet | 1.16.5-00 | http://apt.kubernetes.io kubernetes-xenial/main amd64 Packages
#kubernetes-sandbox-remote-calico\kube-cluster\2_kube-dependencies.yml
kubernetes_version : "=1.17.0-00"
validated_dockerv: "=5:19.03.4~3-0~ubuntu-xenial"
https://kubernetes.io/docs/setup/release/notes/
~~~~
upgrade calico
~~~~
Installing a pod network add-on
kubectl apply -f https://docs.projectcalico.org/v3.8/manifests/calico.yaml
$ kubectl get pods -n kube-system
$ kubectl -n kube-system logs coredns-5644d7b6d9-cw9bg
https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/create-cluster-kubeadm/
~~~~
upgrade docker
~~~~
vagrant@k8s-master01:~$ apt-cache madison docker-ce
docker-ce | 5:19.03.5~3-0~ubuntu-xenial | https://download.docker.com/linux/ubuntu xenial/stable amd64 Packages
docker-ce | 5:19.03.4~3-0~ubuntu-xenial | https://download.docker.com/linux/ubuntu xenial/stable amd64 Packages
docker-ce | 5:19.03.3~3-0~ubuntu-xenial | https://download.docker.com/linux/ubuntu xenial/stable amd64 Packages
docker-ce | 5:19.03.2~3-0~ubuntu-xenial | https://download.docker.com/linux/ubuntu xenial/stable amd64 Packages
docker-ce | 5:19.03.1~3-0~ubuntu-xenial | https://download.docker.com/linux/ubuntu xenial/stable amd64 Packages
Update the latest validated version of Docker to 19.03 (#84476, @neolit123)
https://kubernetes.io/docs/setup/release/notes/
On each of your machines, install Docker. Version 19.03.4 is recommended, but 1.13.1, 17.03, 17.06, 17.09, 18.06 and 18.09 are known to work as well. Keep track of the latest verified Docker version in the Kubernetes release notes.
https://kubernetes.io/docs/setup/production-environment/container-runtimes/
[WARNING IsDockerSystemdCheck]: detected "cgroupfs" as the Docker cgroup driver. The recommended driver is "systemd". Please follow the guide at https://kubernetes.io/docs/setup/cri/
~~~~
Controlling your cluster from machines other than the control-plane node
~~~~
vagrant@k8s-master01:~$ hostnamectl | grep "Operating System"
Operating System: Ubuntu 19.04
vagrant@worker01:~$ hostnamectl | grep "Operating System"
Operating System: Ubuntu 16.04.5 LTS
vagrant@worker02:~$ hostnamectl | grep "Operating System"
Operating System: Ubuntu 18.10
[vagrant@remotecontrol01 ~]$ cat /etc/redhat-release
CentOS Linux release 7.6.1810 (Core)
@k8s-master01:/etc/kubernetes/admin.conf .
copy the administrator kubeconfig file from your control-plane node to your workstation
scp vagrant@k8s-master01:/~admin.conf .
Install kubectl
[vagrant@remotecontrol01 ~]$ cat < 31m v1.15.2
worker02 Ready 30m v1.15.2
~~~~
Init Containers
~~~~
vagrant@k8s-master:~$ kubectl apply -f /vagrant/myapp.yaml
pod/myapp-pod created
vagrant@k8s-master:~$ kubectl get -f /vagrant/myapp.yaml
NAME READY STATUS RESTARTS AGE
myapp-pod 0/1 Init:0/2 0 12m
# for more details
vagrant@k8s-master:~$ kubectl describe -f /vagrant/myapp.yaml
# Inspect the first init container
vagrant@k8s-master:~$ kubectl logs myapp-pod -c init-myservice
# Inspect the second init container
vagrant@k8s-master:~$ kubectl logs myapp-pod -c init-mydb
vagrant@k8s-master01:~$ kubectl apply -f /vagrant/services.yaml
service/myservice created
service/mydb created
vagrant@k8s-master01:~$ kubectl get -f /vagrant/myapp.yaml
NAME READY STATUS RESTARTS AGE
myapp-pod 1/1 Running 0 5m52s
vagrant@k8s-master01:~$ kubectl logs myapp-pod -c init-mydb
Server: 10.96.0.10
Address 1: 10.96.0.10 kube-dns.kube-system.svc.cluster.local
Name: mydb
Address 1: 10.96.186.168 mydb.default.svc.cluster.local
vagrant@k8s-master01:~$ kubectl logs myapp-pod -c init-myservice | more
nslookup: can't resolve 'myservice'
Server: 10.96.0.10
Address 1: 10.96.0.10 kube-dns.kube-system.svc.cluster.local
Init Containers
https://kubernetes.io/docs/concepts/workloads/pods/init-containers/
~~~~