Rancher and k8s 2019(1)Introduction and First Sample

Rancher and k8s 2019(1)Introduction and First Sample

Try on my CentOS
Installed Docker on the machine
> docker --version
Docker version 19.03.2, build 6a30dfc

Start the Rancker from Docker Image
> mkdir ~/tool/rancher-docker
> sudo ln -s /home/carl/tool/rancher-docker /opt/rancher-docker
> sudo ln -s /opt/rancher-docker /opt/rancher

Go to the working directory
> cd /opt/rancher
> mkdir /opt/rancher/rancher_home

Prepare a Makefile there
> cat Makefile
PORT=9090
SSL_PORT=9091
IMAGE=rancher/rancher
TAG=stable
NAME=rancher-$(PORT)
run:
docker run \
-d \
        --restart=unless-stopped \
-p $(PORT):80 \
-p $(SSL_PORT):443 \
-v $(shell pwd)/rancher_home:/var/lib/rancher/ \
--name $(NAME) \
$(IMAGE):$(TAG)
clean:
docker stop ${NAME}
docker rm ${NAME}

Start to run that
> make run

Check the running status
> docker ps
CONTAINER ID        IMAGE                    COMMAND             CREATED             STATUS              PORTS                                         NAMES
c4c932adb121        rancher/rancher:stable   "entrypoint.sh"     15 seconds ago      Up 14 seconds       0.0.0.0:9090->80/tcp, 0.0.0.0:9091->443/tcp   rancher-9090

Visit the HTTPS port, it will ask you to set up the password and etc.
https://centos-dev1:9091/

Create my Cluster
[Global] —> [Clusters] —> [Add Cluster] —> [From my Existing Nodes] my current demo testing
Cluster Name: dockerdemo

Next Button

Checkbox Worker
>sudo docker run -d --privileged --restart=unless-stopped --net=host -v /etc/kubernetes:/etc/kubernetes -v /var/run:/var/run rancher/rancher-agent:v2.2.8 --server https://centos-dev1:9091 --token fmnlt47dl5dp52ddj2hpxfqmkqd69wpm6gjlq9xnkr6bzdd26mmvd2 --ca-checksum 06c2f71d46eaea14f4a21eeb0ec59e73899b56fe5e27204c4357caa93ab0ba8e --worker

Checkbox Worker/Control Plane
>sudo docker run -d --privileged --restart=unless-stopped --net=host -v /etc/kubernetes:/etc/kubernetes -v /var/run:/var/run rancher/rancher-agent:v2.2.8 --server https://centos-dev1:9091 --token fmnlt47dl5dp52ddj2hpxfqmkqd69wpm6gjlq9xnkr6bzdd26mmvd2 --ca-checksum 06c2f71d46eaea14f4a21eeb0ec59e73899b56fe5e27204c4357caa93ab0ba8e --controlplane --worker

Checkbox ETCD/Control Plane/Worker
>sudo docker run -d --privileged --restart=unless-stopped --net=host -v /etc/kubernetes:/etc/kubernetes -v /var/run:/var/run rancher/rancher-agent:v2.2.8 --server https://centos-dev1:9091 --token fmnlt47dl5dp52ddj2hpxfqmkqd69wpm6gjlq9xnkr6bzdd26mmvd2 --ca-checksum 06c2f71d46eaea14f4a21eeb0ec59e73899b56fe5e27204c4357caa93ab0ba8e --etcd --controlplane --worker

Run this command on my centos-dev1
> sudo docker run -d --privileged --restart=unless-stopped --net=host -v /etc/kubernetes:/etc/kubernetes -v /var/run:/var/run rancher/rancher-agent:v2.2.8 --server https://centos-dev1:9091 --token fmnlt47dl5dp52ddj2hpxfqmkqd69wpm6gjlq9xnkr6bzdd26mmvd2 --ca-checksum 06c2f71d46eaea14f4a21eeb0ec59e73899b56fe5e27204c4357caa93ab0ba8e --etcd --controlplane --worker

Click on the cluster name dockerdemo, it will drive us to the cluster information page.

It shows to me the first cluster is there with only one node.

Go to cluster ‘dockerdemo’ —> [Default] —> [Workloads] —> [Deploy]
Name: nginxdemo
Docker Image: nginx:alpine
WorkloadType: 1 pod
Namespace: default

[Add Port]
80 —> TCP —> NodePort(On every node) 30000

[Launch] button

Visit page
http://centos-dev1:30000/

Stop the service and try others
> make clean

Try on my MAC
> docker --version
Docker version 19.03.2, build 6a30dfc

Do the similar thing on MAC
> make run PORT=80 SSL_PORT=443


References:
https://www.itfanr.cc/2019/08/31/lightweight-kubernetes-release-k3s-issues/
https://www.rancher.cn/rancher-k3s/
https://rancher.com/docs/rancher/v2.x/en/
https://rancher.com/docs/rancher/v2.x/en/installation/ha/

Rancher
https://tonybai.com/2016/04/14/an-introduction-about-rancher/
https://www2.cnrancher.com/rancherv2-0-quick-start-guide/
https://www.rancher.cn/docs/
https://www.rancher.cn/docs/rancher/v2.x/cn/overview/
https://www.cnblogs.com/horizonli/p/10572573.html

k8s
https://www.jianshu.com/p/6b8ee8a5010f

https://blog.csdn.net/CSDN_duomaomao/article/details/78029800
https://www.zhihu.com/question/309076492