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This article mainly introduces kubernetes 1.18 how to install offline, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

Kuberentes offline slippery installation

In order to make the kubernetes installation and cluster node management more smooth, this time we put a lot of effort into it. A lot of very big updates have been made this time, and have been fully tested and fixed by bug to make it stable.

Try to do this simple thing to the extreme.

Divest the customized kubeam function into sealos

The 100-year-old certificate function and localLB implemented by custom kubeadm code have been stripped into sealos and are now completely native kubernetes.

In order to reduce the dependence on third-party command line tools, sealos certificates are generated entirely by calling golang's library, and the generation logic is the same as kubeadm, but the certificate time of one year in client-go is changed into a parameter.

Ipvs's localLB definitely disdains to call tools like ipvsadm, which is also done by system calls, and fixes the incompatibility between netlink and kernel versions, which has always been solved by kernel upgrades in version 1.18 of kube-proxy.

Free to add and delete master or node nodes

For all the things of one command, have you found such a smooth and simple way to add or delete nodes in your cluster?

Ultra-complete kubernetes version support

We will release offline packages within 1 working day for the official version of the basic official release. So it is basically the fastest and most complete in the whole network, and in order for users to have a better download experience, put it on Aliyun oss and download silky.

The reason we are so fast is due to our packaging and automated testing robots.

Experience optimization and re-optimization

Streamlined log output

Real-time stream logs, most tool logs for remote execution commands are synchronous output, which is returned to standard output after log execution, while asynchronous output when sealos executes remote commands is too slippery.

Lvscare boot ipvs kernel module load

? Quick start

Environmental information

Hostname IP address master0192.168.0.2master1192.168.0.3master2192.168.0.4node0192.168.0.5

Server password: 123456

Just prepare the server and execute the following command on any server

# download and install sealos, sealos is a binary tool for golang Just download and copy it to the bin directory The release page can also download $wget-c https://sealyun.oss-cn-beijing.aliyuncs.com/latest/sealos & &\ chmod + x sealos & & mv sealos / usr/bin # download the offline resource kit $wget-c https://sealyun.oss-cn-beijing.aliyuncs.com/d551b0b9e67e0416d0f9dce870a16665-1.18.0/kube1.18.0.tar.gz # install a three-master kubernetes cluster $sealos init-- passwd 123456\-- master 192.168.0.2-- master 192.168.0.3-- master 192.168.0.4\-- node 192.168.0.5\-- pkg-url / root/kube1.18.0.tar.gz\-version v1.18.0

Parameter meaning

Example passwd server password 123456masterk8s master node IP address 192.168.0.2nodek8s node node IP address 192.168.0.3pkg-url offline resource bundle address, which can be downloaded locally or a version corresponding to a remote address / root/kube1.16.0.tar.gzversion resource pack v1.16.0

Add master

→ sealos join-- master 192.168.0.6-- master 192.168.0.7? → sealos join-- master 192.168.0.6-192.168.0.9 # or multiple consecutive IP

Add node

→ sealos join-- node 192.168.0.6-- node 192.168.0.7? → sealos join-- node 192.168.0.6-192.168.0.9 # or multiple consecutive IP

Delete the specified master node

→ sealos clean-- master 192.168.0.6-- master 192.168.0.7? → sealos clean-- master 192.168.0.6-192.168.0.9 # or multiple consecutive IP

Delete the specified node node

→ sealos clean-- node 192.168.0.6-- node 192.168.0.7? → sealos clean-- node 192.168.0.6-192.168.0.9 # or multiple consecutive IP

Clean up the cluster

→ sealos clean thank you for reading this article carefully. I hope the article "how to install kubernetes 1.18 offline" shared by the editor will be helpful to you. At the same time, I hope you will support us and pay attention to the industry information channel. More related knowledge is waiting for you to learn!

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