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README0.3.md

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One click fast installation of highly available kubernetes cluster, as well as addition of kubernetes node, deletion of kubernetes node, destruction of kubernetes master and rebuild of kubernetes master in later operation and maintenance stage.

kube-install


[1] Corresponding relation


Kube-install and kubernetes version correspondence:
kube-install VersionInstallation package to downloadSupported installed versions
kube-install v0.1.* kube-install-for-k8s1.14-v0.1.*.tgz Install kubernetes v1.14.*
kube-install v0.2.* kube-install-for-k8s1.14-v0.2.*.tgz Install kubernetes v1.14.*
kube-install v0.3.* kube-install-for-k8s1.14-v0.3.*.tgz Install kubernetes v1.14.*
kube-install v0.3.* kube-install-for-k8s1.15-v0.3.*.tgz Install kubernetes v1.15.*
kube-install v0.3.* kube-install-for-k8s1.16-v0.3.*.tgz Install kubernetes v1.16.*
kube-install v0.3.* kube-install-for-k8s1.17-v0.3.*.tgz Install kubernetes v1.17.*
kube-install v0.3.* kube-install-for-k8s1.18-v0.3.*.tgz Install kubernetes v1.18.*

Note: for a list of supported operating system distributions, please refer to OS support list.


[2] How to install?


If you have four servers,kubernetes master software is installed on the three servers (192.168.1.11, 192.168.1.12, 192.168.1.13), and kubernetes node software is installed on the four servers (192.168.1.11, 192.168.1.12, 192.168.1.13, 192.168.1.14).

IP AddressRoleOS VersionRoot Password
192.168.1.11k8s-master,k8s-nodeCentOS Linux release 7 or Red Hat Enterprise Linux(RHEL) 7cloudnativer
192.168.1.12k8s-master,k8s-nodeCentOS Linux release 7 or Red Hat Enterprise Linux(RHEL) 7cloudnativer
192.168.1.13k8s-master,k8s-nodeCentOS Linux release 7 or Red Hat Enterprise Linux(RHEL) 7cloudnativer
192.168.1.14k8s-nodeCentOS Linux release 7 or Red Hat Enterprise Linux(RHEL) 7cloudnativer
You expect the architecture after installation to be as follows:

kube-install-arch


2.1 Download kube-install package file


You can download the `kube-install-*.tgz` package from https://github.com/cloudnativer/kube-install/releases.

download-pkg

If you want to install version 1.18 of kubernetes, download the kube-install-v1.18.tgz package file.If you want to install version 1.17 of kubernetes, download the kube-install-v1.17.tgz package file.If you want to install version 1.16 of kubernetes, download the kube-install-v1.16.tgz package file...In the same way, you can download the version you want.

For example, we are now installing kubernetes v1.18, and we have downloaded the kube-install-v1.18.tgz package.

# cd /root/
# wget https://github.com/cloudnativer/kube-install/releases/download/v0.3.2/kube-install-for-k8s1.18-v0.3.2.tgz
# tar -zxvf kube-install-for-k8s1.18-v0.3.2.tgz
# cd /root/kube-install/

2.2 Initialize system environment


Please operate in the root user environment. Perform the system environment initialization operation on the k8s-master selected above:
# cd /root/kube-install/
# ./kube-install -opt init

2.3 Install kubernetes cluster


Please operate in the root user environment. Execute on the k8s-master selected above:
# cd /root/kube-install/
# ./kube-install -opt install -master "192.168.1.11,192.168.1.12,192.168.1.13" -node "192.168.1.11,192.168.1.12,192.168.1.13,192.168.1.14" -mastervip "192.168.1.88" -sshpwd "cloudnativer"

Note: in the above command, the -mastervip parameter is the kubernetes cluster virtual IP address.So you need to assign the kubernetes cluster a virtual IP address on the same LAN as the k8s-master.


2.4 Login kubernetes dashboard UI


Execute the following command on the k8s-master you selected to view the kube-dashboard console URL and key:
# cat /opt/kube-install/loginkey.txt

loginkey

Login to the kube-dashboard console UI using the URL and key in the /opt/kube-install/loginkey.txt document.Here are the relevant screenshots:

kube-dashboard

kube-dashboard




[3] Operation and maintenance


After kube-install is installed, you can directly execute `kube-install` command in any directory of any k8s-master server.Kube-install can not only quickly install the highly available kubernetes cluster, but also add k8s-node, delete k8s-node, delete k8s-master and rebuild k8s-master.
Suppose you expect to install two servers (192.168.1.15 and 192.168.1.16) as k8s-nodes and join the kubernetets cluster in Chapter [2].
IP AddressRoleOS VersionRoot Password
192.168.1.11k8s-master,k8s-nodeCentOS Linux release 7 or Red Hat Enterprise Linux(RHEL) 7cloudnativer
192.168.1.12k8s-master,k8s-nodeCentOS Linux release 7 or Red Hat Enterprise Linux(RHEL) 7cloudnativer
192.168.1.13k8s-master,k8s-nodeCentOS Linux release 7 or Red Hat Enterprise Linux(RHEL) 7cloudnativer
192.168.1.14k8s-nodeCentOS Linux release 7 or Red Hat Enterprise Linux(RHEL) 7cloudnativer
192.168.1.15k8s-nodeCentOS Linux release 7 or Red Hat Enterprise Linux(RHEL) 7cloudnativer
192.168.1.16k8s-nodeCentOS Linux release 7 or Red Hat Enterprise Linux(RHEL) 7cloudnativer

Select any k8s-master server, and execute the following command on it:

# kube-install -opt addnode -node "192.168.1.15,192.168.1.16" -sshpwd "cloudnativer"

The architecture after installation is shown in the following figure:

kube-install-arch


You can click here to view more operation documents about add k8s-node, delete k8s-node, delete k8s-master and rebuild k8s-master.

[4] Parameter introduction


The parameters about kube-install can be viewed using the `kube-install help` command. You can also see more detailed parameter introduction here.