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Editor to share with you how to use kubeadm to install kubernetes 1.13 high-availability cluster. I hope you will get something after reading this article. Let's discuss it together.

Kubeadm installation kubernetes 1.13 High availability Cluster initialization Cluster: configure the hosts file

Vim / etc/hosts

192.168.3.147test-master01192.168.3.148test-master02192.168.3.149test-master03192.168.3.150test-work01 configuration secret-free login ssh-keygenssh-copy-id test-master01ssh-copy-id test-master02ssh-copy-id test-master03ssh-copy-id test-work01 setting parameters

Turn off the firewall

Systemctl stop firewalldsystemctl disable firewalld

Close swap

Swapoff-ased-I'/ swap / s / ^\ (. *\) $/ #\ 1Universe g'/ etc/fstab

Modify the / etc/fstab file, comment out the automatic mount of SWAP, and use free-m to confirm that swap is closed.

Close selinux

Sed-i 's etc/sysconfig/selinuxsetenforce0 SELINUXPROPERVERVERVERVINE

Configure forwarding-related parameters, otherwise errors may occur

Cat / etc/sysconfig/modules/ipvs.modules / tmp/crontab2.tmpcrontab / tmp/crontab2.tmpsystemctl start ntpdate.serviceecho "* soft nofile 65536" > > / etc/security/limits.confecho "* hard nofile 65536" > > / etc/security/limits.confecho "* soft nproc 65536" > > / etc/security/limits.confecho "* hard nproc 65536" > / etc/security/limits.confecho "* soft memlock unlimited" > > / etc/security/limits.confecho "* hard memlock unlimited" > > / etc/security/ Limits.conf installs dockeryum install-y epel-releaseyum install-y yum-utils device-mapper-persistent-data lvm2 net-tools conntrack-toolswget vim ntpdate libseccomp libtool-ltdltelnet rsync bind-utilsyum install-y https://mirrors.aliyun.com/docker-ce/linux/centos/7/x86_64/stable/Packages/docker-ce-18.06.1.ce-3.el7.x86_64.rpm to configure docker domestic image:

All nodes install docker

Edit / etc/docker/daemon.json and add the following line

{"registry-mirrors": ["https://registry.docker-cn.com"]}"

Restart docker

Systemctl daemon-reloadsystemctl enable dockersystemctl start docker

Note: if you use the way overlay2 is written:

Daemon.json {"log-driver": "json-file", "log-opts": {"max-size": "100m", "max-file": "10"}, "registry-mirrors": ["https://pqbap4ya.mirror.aliyuncs.com"]," storage-driver ":" overlay2 "," storage-opts ": [" overlay2.override_kernel_check=true "]}

If you want to use overlay2, the prerequisite is to use ext4. If you use xfs, you need to format the disk with the parameter mkfs.xfs-n ftype=1 / path/to/your/device, and the parameter ftype=1 needs to be configured to 1.

Install keepalived+haproxy

Three master nodes

Slightly

VIP: 192.168.3.80

Install kubeadm, kubelet and kubectl

All nodes execute

Set yum source cat kubeadm-config.yaml

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