使用sealos部署k8s集群并实现集群管理
节点说明
使用CentOS7u9操作系统，然后准备如下配置的三个节点
| ip | CPU | 内存 | 硬盘 | 角色 | 主机名 |
|---|---|---|---|---|---|
| 192.168.91.210 | 2C | 2G | 40GB | master | master01 |
| 192.168.91.211 | 2C | 2G | 40GB | master | master02 |
| 192.168.91.212 | 2C | 2G | 40GB | master | master03 |
| 192.168.91.213 | 2C | 2G | 40GB | worker | worker01 |
# 在所有节点中操作
# 配置hosts
cat >> /etc/hosts << EOF
192.168.91.210 master01
192.168.91.211 master02
192.168.91.212 master03
192.168.91.213 worker01
EOF
# 时间同步
yum -y install ntpdate
echo "0 */1 * * * ntpdate time1.aliyun.com" >> /var/spool/cron/root
# 升级内核
rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
yum -y install https://www.elrepo.org/elrepo-release-7.0-4.el7.elrepo.noarch.rpm
yum --enablerepo="elrepo-kernel" -y install kernel-lt.x86_64
awk -F \' '$1=="menuentry " {print i++ " : " $2}' /etc/grub2.cfg
0 : CentOS Linux (5.4.259-1.el7.elrepo.x86_64) 7 (Core)
1 : CentOS Linux (3.10.0-1160.71.1.el7.x86_64) 7 (Core)
2 : CentOS Linux (0-rescue-07b67373f5f64f3493970ca79289589a) 7 (Core)
grub2-set-default "CentOS Linux (5.4.259-1.el7.elrepo.x86_64) 7 (Core)"
reboot
使用sealos部署k8s
# master01
# sealos准备
wget https://github.com/labring/sealos/releases/download/v4.3.6/sealos_4.3.6_linux_amd64.tar.gz
tar zxvf sealos_4.3.6_linux_amd64.tar.gz sealos && chmod +x sealos && mv sealos /usr/bin
sealos version
SealosVersion:
buildDate: "2023-10-20T14:15:00Z"
compiler: gc
gitCommit: a2719848
gitVersion: 4.3.6
goVersion: go1.20.10
platform: linux/amd64
# 获取帮助
sealos -h
# 部署k8s，--passwd zhangjiabao 这个是ssh的密码，如果配置免密可以不需要
sealos run labring/kubernetes:v1.24.0 labring/calico:v3.22.1 --masters 192.168.91.210,192.168.91.211,192.168.91.212 --nodes 192.168.91.213 --passwd zhangjiabao
kubectl get nodes
NAME STATUS ROLES AGE VERSION
master01 Ready control-plane 2m37s v1.24.0
master02 Ready control-plane 116s v1.24.0
master03 Ready control-plane 81s v1.24.0
worker01 Ready <none> 56s v1.24.0
kubectl get pods -A
NAMESPACE NAME READY STATUS RESTARTS AGE
calico-system calico-kube-controllers-6b44b54755-jsx6q 1/1 Running 0 93s
calico-system calico-node-66cns 1/1 Running 0 93s
calico-system calico-node-d86pq 1/1 Running 0 93s
calico-system calico-node-qs8wj 1/1 Running 0 93s
calico-system calico-node-r45t6 1/1 Running 0 94s
calico-system calico-typha-744d647f99-2nbtc 1/1 Running 0 94s
calico-system calico-typha-744d647f99-pxnl6 1/1 Running 0 84s
kube-system coredns-6d4b75cb6d-bj9qn 1/1 Running 0 3m20s
kube-system coredns-6d4b75cb6d-c9l2g 1/1 Running 0 3m20s
kube-system etcd-master01 1/1 Running 0 3m35s
kube-system etcd-master02 1/1 Running 0 2m46s
kube-system etcd-master03 1/1 Running 0 2m11s
kube-system kube-apiserver-master01 1/1 Running 0 3m36s
kube-system kube-apiserver-master02 1/1 Running 1 (2m48s ago) 2m46s
kube-system kube-apiserver-master03 1/1 Running 0 2m12s
kube-system kube-controller-manager-master01 1/1 Running 0 3m34s
kube-system kube-controller-manager-master02 1/1 Running 0 104s
kube-system kube-controller-manager-master03 1/1 Running 0 53s
kube-system kube-proxy-24qw7 1/1 Running 0 2m21s
kube-system kube-proxy-gc6pn 1/1 Running 0 2m56s
kube-system kube-proxy-rdnzx 1/1 Running 0 3m20s
kube-system kube-proxy-vmmvn 1/1 Running 0 116s
kube-system kube-scheduler-master01 1/1 Running 0 3m36s
kube-system kube-scheduler-master02 1/1 Running 0 105s
kube-system kube-scheduler-master03 1/1 Running 0 71s
kube-system kube-sealos-lvscare-worker01 1/1 Running 0 109s
tigera-operator tigera-operator-d7957f5cc-4hqmc 1/1 Running 0 115s
使用kuboard实现k8s集群托管
| ip | CPU | 内存 | 硬盘 |
|---|---|---|---|
| 192.168.91.214 | 2C | 1G | 40GB |
# Docker安装
wget -O /etc/yum.repos.d/docker-ce.repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
yum -y install docker-ce
cat << EOF > /etc/docker/daemon.json
{
"registry-mirrors": ["https://zwyx2n3v.mirror.aliyuncs.com"]
}
EOF
systemctl enable --now docker
docker run -d --restart=unless-stopped --name=kuboard -p 80:80/tcp -p 10081:10081/tcp -e KUBOARD_ENDPOINT="http://192.168.91.214:80" -e KUBOARD_AGENT_SERVER_TCP_PORT="10081" -v /root/kuboard-data:/data eipwork/kuboard:v3
用户名和密码分别为：admin及Kuboard123
# master01
curl -k 'http://192.168.91.214:80/kuboard-api/cluster/kubedemo/kind/KubernetesCluster/kubedemo/resource/installAgentToKubernetes?token=Kls7YOPyPzUigXeJzRvMDIMhGfX1zLID' > kuboard-agent.yaml
kubectl apply -f ./kuboard-agent.yaml
kubectl get pods -n kuboard
NAME READY STATUS RESTARTS AGE
kuboard-agent-hn49a6-2-6fff88b6bf-k2msx 1/1 Running 0 2m17s
kuboard-agent-hn49a6-5757c889f5-hd68l 1/1 Running 0 2m17s
