曾无好事来相访，赖尔高文一起予。这篇文章主要讲述kubeadmin 安装k8s1.20集群+kuboard-v3部署实操相关的知识，希望能为你提供帮助。
kubeadmin 安装k8s1.20集群标签（空格分隔）： kubernetes架构系列
[toc]
一：k8s1.20.x 的重要更新
1、Kubectl debug 设置一个临时容器
2、Sidecar
3、Volume：更改目录权限，fsGroup
4、ConfigMap和SecretK8S官网：https://kubernetes.io/docs/setup/
最新版高可用安装：https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/high-availability/二：k8s1.20.x 的安装 2.1 ：高可用Kubernetes集群规划
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k8s 的高可用的架构图
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!
所有节点配置hosts，修改/etc/hosts如下：
cat /etc/hosts
----
192.168.100.11node01.flyfish.cn
192.168.100.12node02.flyfish.cn
192.168.100.13node03.flyfish.cn
192.168.100.14node04.flyfish.cn
192.168.100.15node05.flyfish.cn
192.168.100.16node06.flyfish.cn
192.168.100.17node07.flyfish.cn
192.168.100.18node08.flyfish.cn
----2.2 yum 的更新配置 （所有节点全部安装）
curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
yum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
cat <
<
EOF >
/etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF
sed -i -e \'/mirrors.cloud.aliyuncs.com/d\' -e \'/mirrors.aliyuncs.com/d\' /etc/yum.repos.d/CentOS-Base.repo
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!
必备工具安装:
yum install wget jq psmisc vim net-tools telnet yum-utils device-mapper-persistent-data lvm2 git -y
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所有节点关闭防火墙、selinux、dnsmasq、swap。服务器配置如下：systemctl disable --now firewalld
systemctl disable --now dnsmasq
systemctl disable --now NetworkManagersetenforce 0
sed -i \'s#SELINUX=enforcing#SELINUX=disabled#g\' /etc/sysconfig/selinux
sed -i \'s#SELINUX=enforcing#SELINUX=disabled#g\' /etc/selinux/config关闭swap分区 (全部节点)
swapoff -a &
&
sysctl -w vm.swappiness=0
sed -ri \'/^[^#]*swap/s@^@#@\' /etc/fstab
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安装ntpdaterpm -ivh http://mirrors.wlnmp.com/centos/wlnmp-release-centos.noarch.rpm
yum install ntpdate -y
所有节点同步时间。时间同步配置如下：ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
echo \'Asia/Shanghai\' >
/etc/timezone
ntpdate time2.aliyun.com
加入到crontab*/5 * * * * ntpdate time2.aliyun.com
所有节点配置limit：ulimit -SHn 65535vim /etc/security/limits.conf
# 末尾添加如下内容
* soft nofile 655360
* hard nofile 131072
* soft nproc 655350
* hard nproc 655350
* soft memlock unlimited
* hard memlock unlimited安装ntpdaterpm -ivh http://mirrors.wlnmp.com/centos/wlnmp-release-centos.noarch.rpm
yum install ntpdate -y
所有节点同步时间。时间同步配置如下：ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
echo \'Asia/Shanghai\' >
/etc/timezone
ntpdate time2.aliyun.com
加入到crontab*/5 * * * * ntpdate time2.aliyun.com
所有节点配置limit：ulimit -SHn 65535vim /etc/security/limits.conf
# 末尾添加如下内容
* soft nofile 655360
* hard nofile 131072
* soft nproc 655350
* hard nproc 655350
* soft memlock unlimited
* hard memlock unlimited
Master01节点免密钥登录其他节点：ssh-keygen -t rsa
for i in k8s-master01.flyfish.cn k8s-master02.flyfish.cn k8s-master03.flyfish.cn k8s-node01.flyfish.cn k8s-node02.flyfish.cn;
do ssh-copy-id -i .ssh/id_rsa.pub $i;
done所有节点升级系统并重启：yum update -y&
&
reboot下载安装源码文件：
cd /root/ ;
git clone https://github.com/dotbalo/k8s-ha-install.git
CentOS 7安装yum源如下：
curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
yum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
cat <
<
EOF >
/etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF
sed -i -e \'/mirrors.cloud.aliyuncs.com/d\' -e \'/mirrors.aliyuncs.com/d\' /etc/yum.repos.d/CentOS-Base.repo
CentOS 8 安装源如下：
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-8.repoyum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repocat <
<
EOF >
/etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF
sed -i -e \'/mirrors.cloud.aliyuncs.com/d\' -e \'/mirrors.aliyuncs.com/d\' /etc/yum.repos.d/CentOS-Base.repo所有节点升级系统并重启，此处升级没有升级内核，下节会单独升级内核：
yum install wget jq psmisc vim net-tools telnet yum-utils device-mapper-persistent-data lvm2 -y
yum update -y --exclude=kernel* &
&
reboot #CentOS7需要升级，8不需要
1.1.2内核配置
CentOS7 需要升级内核至4.18+
https://www.kernel.org/ 和 https://elrepo.org/linux/kernel/el7/x86_64/CentOS 7 dnf可能无法安装内核
dnf --disablerepo=\\* --enablerepo=elrepo -y install kernel-ml kernel-ml-devel
grubby --default-kernel使用如下方式安装最新版内核
rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-2.el7.elrepo.noarch.rpm查看最新版内核yum --disablerepo="*" --enablerepo="elrepo-kernel" list available[root@k8s-node01 ~]# yum --disablerepo="*" --enablerepo="elrepo-kernel" list available
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* elrepo-kernel: mirrors.neusoft.edu.cn
elrepo-kernel| 2.9 kB00:00:00
elrepo-kernel/primary_db| 1.9 MB00:00:00
Available Packages
elrepo-release.noarch7.0-5.el7.elrepoelrepo-kernel
kernel-lt.x86_644.4.229-1.el7.elrepoelrepo-kernel
kernel-lt-devel.x86_644.4.229-1.el7.elrepoelrepo-kernel
kernel-lt-doc.noarch4.4.229-1.el7.elrepoelrepo-kernel
kernel-lt-headers.x86_644.4.229-1.el7.elrepoelrepo-kernel
kernel-lt-tools.x86_644.4.229-1.el7.elrepoelrepo-kernel
kernel-lt-tools-libs.x86_644.4.229-1.el7.elrepoelrepo-kernel
kernel-lt-tools-libs-devel.x86_644.4.229-1.el7.elrepoelrepo-kernel
kernel-ml.x86_645.7.7-1.el7.elrepoelrepo-kernel
kernel-ml-devel.x86_645.7.7-1.el7.elrepoelrepo-kernel
kernel-ml-doc.noarch5.7.7-1.el7.elrepoelrepo-kernel
kernel-ml-headers.x86_645.7.7-1.el7.elrepoelrepo-kernel
kernel-ml-tools.x86_645.7.7-1.el7.elrepoelrepo-kernel
kernel-ml-tools-libs.x86_645.7.7-1.el7.elrepoelrepo-kernel
kernel-ml-tools-libs-devel.x86_645.7.7-1.el7.elrepoelrepo-kernel
perf.x86_645.7.7-1.el7.elrepoelrepo-kernel
python-perf.x86_645.7.7-1.el7.elrepoelrepo-kernel安装最新版：
yum --enablerepo=elrepo-kernel install kernel-ml kernel-ml-devel –y
安装完成后reboot
更改内核顺序：
grub2-set-default0 &
&
grub2-mkconfig -o /etc/grub2.cfg &
&
grubby --args="user_namespace.enable=1" --update-kernel="$(grubby --default-kernel)" &
&
reboot
开机后查看内核
[appadmin@k8s-node01 ~]$ uname -a
Linux k8s-node01 5.7.7-1.el7.elrepo.x86_64 #1 SMP Wed Jul 1 11:53:16 EDT 2020 x86_64 x86_64 x86_64 GNU/LinuxCentOS 8按需升级:
可以采用dnf升级，也可使用上述同样步骤升级（使用上述步骤注意elrepo-release-8.1版本）
rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
dnf install https://www.elrepo.org/elrepo-release-8.1-1.el8.elrepo.noarch.rpmdnf --disablerepo=\\* --enablerepo=elrepo -y install kernel-ml kernel-ml-devel
grubby --default-kernel &
&
reboot
安装依赖包：
本所有节点安装ipvsadm：
yum install ipvsadm ipset sysstat conntrack libseccomp -y
所有节点配置ipvs模块，在内核4.19+版本nf_conntrack_ipv4已经改为nf_conntrack，本例安装的内核为4.18，使用nf_conntrack_ipv4即可：
modprobe -- ip_vs
modprobe -- ip_vs_rr
modprobe -- ip_vs_wrr
modprobe -- ip_vs_sh
modprobe -- nf_conntrack_ipv4
cat /etc/modules-load.d/ipvs.conf
ip_vs
ip_vs_rr
ip_vs_wrr
ip_vs_sh
nf_conntrack_ipv4
ip_tables
ip_set
xt_set
ipt_set
ipt_rpfilter
ipt_REJECT
ipip
然后执行systemctl enable --now systemd-modules-load.service即可开启一些k8s集群中必须的内核参数，所有节点配置k8s内核：
cat <
<
EOF >
/etc/sysctl.d/k8s.conf
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-iptables = 1
fs.may_detach_mounts = 1
vm.overcommit_memory=1
vm.panic_on_oom=0
fs.inotify.max_user_watches=89100
fs.file-max=52706963
fs.nr_open=52706963
net.netfilter.nf_conntrack_max=2310720net.ipv4.tcp_keepalive_time = 600
net.ipv4.tcp_keepalive_probes = 3
net.ipv4.tcp_keepalive_intvl =15
net.ipv4.tcp_max_tw_buckets = 36000
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_max_orphans = 327680
net.ipv4.tcp_orphan_retries = 3
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_max_syn_backlog = 16384
net.ipv4.ip_conntrack_max = 65536
net.ipv4.tcp_max_syn_backlog = 16384
net.ipv4.tcp_timestamps = 0
net.core.somaxconn = 16384
EOF
sysctl --system
1.1.3基本组件安装
本节主要安装的是集群中用到的各种组件，比如Docker-ce、Kubernetes各组件等。
查看可用docker-ce版本：
yum list docker-ce.x86_64 --showduplicates | sort -r
[root@k8s-master01 k8s-ha-install]# wget https://download.docker.com/linux/centos/7/x86_64/edge/Packages/containerd.io-1.2.13-3.2.el7.x86_64.rpm 安装 docker-ce 19.03版本：yum install -y docker-ce-cli-19.03.8-3.el7.x86_64 docker-ce-19.03.8-3.el7.x86_64温馨提示：
由于新版kubelet建议使用systemd，所以可以把docker的CgroupDriver改成systemd
cat >
/etc/docker/daemon.json <
<
EOF
{
"exec-opts": ["native.cgroupdriver=systemd"]
}
EOF
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启动docker service docker start
chkconfig docker on
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!
安装k8s组件：
yum list kubeadm.x86_64 --showduplicates | sort -r
所有节点安装最新版本kubeadm：
yum install kubeadm -y
所有节点安装指定版本k8s组件：
yum install -y kubeadm-1.20.5-0.x86_64 kubectl-1.20.5-0.x86_64 kubelet-1.20.5-0.x86_64
所有节点设置开机自启动Docker：
systemctl daemon-reload &
&
systemctl enable --now docker
默认配置的pause镜像使用gcr.io仓库，国内可能无法访问，所以这里配置Kubelet使用阿里云的pause镜像：DOCKER_CGROUPS=$(docker info | grep \'Cgroup\' | cut -d\' \' -f4)
cat >
/etc/sysconfig/kubelet<
<
EOF
KUBELET_EXTRA_ARGS="--cgroup-driver=$DOCKER_CGROUPS --pod-infra-container-image=registry.cn-hangzhou.aliyuncs.com/google_containers/pause-amd64:3.1"
EOF
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--
设置Kubelet开机自启动：
systemctl daemon-reload
systemctl enable --now kubelet1.1.4高可用组件安装
所有Master节点通过yum安装HAProxy和KeepAlived：
yum install keepalived haproxy -y
所有Master节点配置HAProxy（详细配置参考HAProxy文档，所有Master节点的HAProxy配置相同）：
[root@k8s-master01 etc]# mkdir /etc/haproxy
[root@k8s-master01 etc]# vim /etc/haproxy/haproxy.cfg
global
maxconn2000
ulimit-n16384
log127.0.0.1 local0 err
stats timeout 30sdefaults
log global
modehttp
optionhttplog
timeout connect 5000
timeout client50000
timeout server50000
timeout http-request 15s
timeout http-keep-alive 15sfrontend monitor-in
bind *:33305
mode http
option httplog
monitor-uri /monitorlisten stats
bind*:8006
modehttp
statsenable
statshide-version
statsuri/stats
statsrefresh30s
statsrealmHaproxy\\ Statistics
statsauthadmin:adminfrontend k8s-master
bind 0.0.0.0:16443
bind 127.0.0.1:16443
mode tcp
option tcplog
tcp-request inspect-delay 5s
default_backend k8s-masterbackend k8s-master
mode tcp
option tcplog
option tcp-check
balance roundrobin
default-server inter 10s downinter 5s rise 2 fall 2 slowstart 60s maxconn 250 maxqueue 256 weight 100
server node01.flyfish.cn192.168.100.11:6443check
server node02.flyfish.cn192.168.100.12:6443check
server node03.flyfish.cn192.168.100.13:6443check----三台机器的配置是一样的：scphaproxy.cfg root@node02.flyfish.cn:/etc/haproxy/
scphaproxy.cfg root@node03.flyfish.cn:/etc/haproxy/
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Master01节点的配置：
[root@k8s-master01 etc]# mkdir /etc/keepalived[root@k8s-master01 ~]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
router_id LVS_DEVEL
}
vrrp_script chk_apiserver {
script "/etc/keepalived/check_apiserver.sh"
interval 2
weight -5
fall 3
rise 2
}
vrrp_instance VI_1 {
state MASTER
interface ens33
mcast_src_ip 192.168.100.11
virtual_router_id 51
priority 100
advert_int 2
authentication {
auth_type PASS
auth_pass K8SHA_KA_AUTH
}
virtual_ipaddress {
192.168.100.200
}
track_script {
chk_apiserver
}
}Master02节点的配置：
! Configuration File for keepalived
global_defs {
router_id LVS_DEVEL
}
vrrp_script chk_apiserver {
script "/etc/keepalived/check_apiserver.sh"
interval 2
weight -5
fall 3
rise 2
}
vrrp_instance VI_1 {
state BACKUP
interface ens33
mcast_src_ip 192.168.100.12
virtual_router_id 51
priority 101
advert_int 2
authentication {
auth_type PASS
auth_pass K8SHA_KA_AUTH
}
virtual_ipaddress {
192.168.100.200
}
track_script {
chk_apiserver
}
}Master03节点的配置：
! Configuration File for keepalived
global_defs {
router_id LVS_DEVEL
}
vrrp_script chk_apiserver {
script "/etc/keepalived/check_apiserver.sh"
interval 2
weight -5
fall 3
rise 2
}
vrrp_instance VI_1 {
state BACKUP
interface ens33
mcast_src_ip 192.168.100.13
virtual_router_id 51
priority 102
advert_int 2
authentication {
auth_type PASS
auth_pass K8SHA_KA_AUTH
}
virtual_ipaddress {
192.168.100.200
}
track_script {
chk_apiserver
}
}注意上述的健康检查是关闭的，集群建立完成后再开启：
track_script {
chk_apiserver
}配置KeepAlived健康检查文件：
[root@k8s-master01 keepalived]# cat /etc/keepalived/check_apiserver.sh
#!/bin/basherr=0
for k in $(seq 1 5)
do
check_code=$(pgrep kube-apiserver)
if [[ $check_code == "" ]];
then
err=$(expr $err + 1)
sleep 5
continue
else
err=0
break
fi
doneif [[ $err != "0" ]];
then
echo "systemctl stop keepalived"
/usr/bin/systemctl stop keepalived
exit 1
else
exit 0
fi
启动haproxy和keepalived (所有master 启动)
[root@k8s-master01 keepalived]# systemctl enable --now haproxy
[root@k8s-master01 keepalived]# systemctl enable --now keepalived
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!
集群初始化：https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/high-availability/
各Master节点的kubeadm-config.yaml配置文件如下：
Master01：
daocloud.io/daocloud
-----
apiVersion: kubeadm.k8s.io/v1beta2
bootstrapTokens:
- groups:
- system:bootstrappers:kubeadm:default-node-token
token: 7t2weq.bjbawausm0jaxury
ttl: 24h0m0s
usages:
- signing
- authentication
kind: InitConfiguration
localAPIEndpoint:
advertiseAddress: 192.168.100.11
bindPort: 6443
nodeRegistration:
criSocket: /var/run/dockershim.sock
name: node01.flyfish.cn
taints:
- effect: NoSchedule
key: node-role.kubernetes.io/master
---
apiServer:
certSANs:
- 192.168.100.200
timeoutForControlPlane: 4m0s
apiVersion: kubeadm.k8s.io/v1beta2
certificatesDir: /etc/kubernetes/pki
clusterName: kubernetes
controlPlaneEndpoint: 192.168.100.200:16443
controllerManager: {}
dns:
type: CoreDNS
etcd:
local:
dataDir: /var/lib/etcd
imageRepository: registry.cn-hangzhou.aliyuncs.com/google_containers
kind: ClusterConfiguration
kubernetesVersion: v1.20.5
networking:
dnsDomain: cluster.local
podSubnet: 172.168.100.0/16
serviceSubnet: 10.96.0.0/12
scheduler: {}
----更新kubeadm文件
kubeadm config migrate --old-config kubeadm-config.yaml --new-config new.yaml
所有Master节点提前下载镜像，可以节省初始化时间：(master 节点)
kubeadm config images pull --config /root/new.yaml
所有节点设置开机自启动kubelet
systemctl enable --now kubelet
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Master01节点初始化，初始化以后会在/etc/kubernetes目录下生成对应的证书和配置文件，之后其他Master节点加入Master01即可：
kubeadm init --config /root/kubeadm-config.yaml--upload-certs不用配置文件初始化：kubeadm init --control-plane-endpoint "LOAD_BALANCER_DNS:LOAD_BALANCER_PORT" --upload-certs初始化失败报错
error execution phase upload-config/kubelet: Error writing Crisocket information for the control-plane node: timed out waiting for the condition
To see the stack trace of this error execute with --v=5 or higher
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!
解决方法：
所有主机停掉kubelet
service kubelet stop 执行命令：swapoff -a &
&
kubeadm reset&
&
systemctl daemon-reload &
&
systemctl restart kubelet&
&
iptables -F &
&
iptables -t nat -F &
&
iptables -t mangle -F &
&
iptables -X
ipvsadm --clear
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!
再次初始化：kubeadm init --config /root/new.yaml --upload-certs
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!
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Your Kubernetes control-plane has initialized successfully!To start using your cluster, you need to run the following as a regular user:mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/configAlternatively, if you are the root user, you can run:export KUBECONFIG=/etc/kubernetes/admin.confYou should now deploy a pod network to the cluster.
Run "kubectl apply -f [podnetwork].yaml" with one of the options listed at:
https://kubernetes.io/docs/concepts/cluster-administration/addons/You can now join any number of the control-plane node running the following command on each as root:kubeadm join 192.168.100.200:16443 --token 7t2weq.bjbawausm0jaxury \\
--discovery-token-ca-cert-hash sha256:7263545b1a028e6217ff4e55712bf24422e6d9aeba54e76daabfc8a824ffcd99 \\
--control-plane --certificate-key c0b3b67c42f4fe9ae2832d86f80df35ee2e7b32f945906fabe60e4ae1f4ba18fPlease note that the certificate-key gives access to cluster sensitive data, keep it secret!
As a safeguard, uploaded-certs will be deleted in two hours;
If necessary, you can use
"kubeadm init phase upload-certs --upload-certs" to reload certs afterward.Then you can join any number of worker nodes by running the following on each as root:kubeadm join 192.168.100.200:16443 --token 7t2weq.bjbawausm0jaxury \\
--discovery-token-ca-cert-hash sha256:7263545b1a028e6217ff4e55712bf24422e6d9aeba54e76daabfc8a824ffcd99
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config所有Master节点配置环境变量，用于访问Kubernetes集群：
cat <
<
EOF >
>
/root/.bashrc
export KUBECONFIG=/etc/kubernetes/admin.conf
EOF
source /root/.bashrc
查看节点状态：
[root@k8s-master01 ~]# kubectl get nodes
NAMESTATUSROLESAGEVERSION
k8s-master01NotReadymaster14mv1.12.3
采用初始化安装方式，所有的系统组件均以容器的方式运行并且在kube-system命名空间内，此时可以查看Pod状态：其他master 加入集群：
kubeadm join 192.168.100.200:16443 --token 7t2weq.bjbawausm0jaxury \\
--discovery-token-ca-cert-hash sha256:7263545b1a028e6217ff4e55712bf24422e6d9aeba54e76daabfc8a824ffcd99 \\
--control-plane --certificate-key c0b3b67c42f4fe9ae2832d86f80df35ee2e7b32f945906fabe60e4ae1f4ba18f
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!
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config加master节点报错
[ERROR DirAvailable--var-lib-etcd]: /var/lib/etcd is not empty
[preflight] If you know what you are doing, you can make a check non-fatal with `--ignore-preflight-errors=...`
To see the stack trace of this error execute with --v=5 or higher
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!
rm -rf /var/lib/etcd在初始化：
kubeadm join 192.168.100.200:16443 --token 7t2weq.bjbawausm0jaxury \\
--discovery-token-ca-cert-hash sha256:7263545b1a028e6217ff4e55712bf24422e6d9aeba54e76daabfc8a824ffcd99 \\
--control-plane --certificate-key c0b3b67c42f4fe9ae2832d86f80df35ee2e7b32f945906fabe60e4ae1f4ba18f
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mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
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kubectl get node 
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node 节点加入：
kubeadm join 192.168.100.200:16443 --token 7t2weq.bjbawausm0jaxury \\
--discovery-token-ca-cert-hash sha256:7263545b1a028e6217ff4e55712bf24422e6d9aeba54e76daabfc8a824ffcd99
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Token过期后生成新的token：(集群扩容与缩容的问题)
kubeadm token create --print-join-command
-----
kubeadm join 192.168.100.200:16443 --token p6rvkq.0joqbi5bxnd12n20--discovery-token-ca-cert-hash sha256:7263545b1a028e6217ff4e55712bf24422e6d9aeba54e76daabfc8a824ffcd99-----
Master需要生成--certificate-key
kubeadm init phase upload-certs--upload-certs
-----
[upload-certs] Storing the certificates in Secret "kubeadm-certs" in the "kube-system" Namespace
[upload-certs] Using certificate key:
c97af03609a9d3c099dd07615ce170a8f0c8db368f36e10a79576f9efcc0857e
----初始化其他master加入集群
kubeadm join 192.168.100.200:16443 --token p6rvkq.0joqbi5bxnd12n20--discovery-token-ca-cert-hash sha256:7263545b1a028e6217ff4e55712bf24422e6d9aeba54e76daabfc8a824ffcd99 --control-plane --certificate-key c97af03609a9d3c099dd07615ce170a8f0c8db368f36e10a79576f9efcc0857e【kubeadmin 安装k8s1.20集群+kuboard-v3部署实操】
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查看token的过期时间
kubectl get secret -n kube-system -o wide
kubectl get secret -n kube-system bootstrap-token-q8soir -o yaml
-----
apiVersion: v1
data:
description: UHJveHkgZm9yIG1hbmFnaW5nIFRUTCBmb3IgdGhlIGt1YmVhZG0tY2VydHMgc2VjcmV0
expiration: MjAyMS0wMy0yNlQxODoyMzowNSswODowMA==
token-id: cThzb2ly
token-secret: cnZidjZwdGIxajIxbWFsZw==
kind: Secret
metadata:
creationTimestamp: "2021-03-26T08:23:05Z"
managedFields:
- apiVersion: v1
fieldsType: FieldsV1
fieldsV1:
f:data:
.: {}
f:description: {}
f:expiration: {}
f:token-id: {}
f:token-secret: {}
f:type: {}
manager: kubeadm
operation: Update
time: "2021-03-26T08:23:05Z"
name: bootstrap-token-q8soir
namespace: kube-system
resourceVersion: "305"
uid: eba712c8-386e-4824-802e-7a2f5cd05f0c
type: bootstrap.kubernetes.io/token
----
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echo MjAyMS0wMy0yNlQxODoyMzowNSswODowMA== |base64 -d
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kubectl get node 
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修改calico-etcd.yaml的以下位置
cd /root/k8s-ha-install &
&
git checkout manual-installation-v1.20.x &
&
cd calico/
-----
sed -i \'s#etcd_endpoints: "http://<
ETCD_IP>
:<
ETCD_PORT>
"#etcd_endpoints: "https://192.168.100.11:2379,https://192.168.100.12:2379,https://192.168.100.13:2379"#g\' calico-etcd.yamlETCD_CA=`cat /etc/kubernetes/pki/etcd/ca.crt | base64 | tr -d \'\\n\'`ETCD_CERT=`cat /etc/kubernetes/pki/etcd/server.crt | base64 | tr -d \'\\n\'`ETCD_KEY=`cat /etc/kubernetes/pki/etcd/server.key | base64 | tr -d \'\\n\'`sed -i "s@# etcd-key: null@etcd-key: ${ETCD_KEY}@g;
s@# etcd-cert: null@etcd-cert: ${ETCD_CERT}@g;
s@# etcd-ca: null@etcd-ca: ${ETCD_CA}@g" calico-etcd.yamlsed -i \'s#etcd_ca: ""#etcd_ca: "/calico-secrets/etcd-ca"#g;
s#etcd_cert: ""#etcd_cert: "/calico-secrets/etcd-cert"#g;
s#etcd_key: "" #etcd_key: "/calico-secrets/etcd-key" #g\' calico-etcd.yamlPOD_SUBNET=`cat /etc/kubernetes/manifests/kube-controller-manager.yaml | grep cluster-cidr= | awk -F= \'{print $NF}\'`sed -i \'s@# - name: CALICO_IPV4POOL_CIDR@- name: CALICO_IPV4POOL_CIDR@g;
s@#value: "192.168.0.0/16"@value: \'"${POD_SUBNET}"\'@g\' calico-etcd.yaml-----kubectl apply -fcalico-etcd.yamlkubectl get node -n kue-system kubectl get node
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配置metric server
cd /root/k8s-ha-install/metrics-server-0.4.x-kubeadm
vim comp.ymal
----
apiVersion: v1
kind: ServiceAccount
metadata:
labels:
k8s-app: metrics-server
name: metrics-server
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
labels:
k8s-app: metrics-server
rbac.authorization.k8s.io/aggregate-to-admin: "true"
rbac.authorization.k8s.io/aggregate-to-edit: "true"
rbac.authorization.k8s.io/aggregate-to-view: "true"
name: system:aggregated-metrics-reader
rules:
- apiGroups:
- metrics.k8s.io
resources:
- pods
- nodes
verbs:
- get
- list
- watch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
labels:
k8s-app: metrics-server
name: system:metrics-server
rules:
- apiGroups:
- ""
resources:
- pods
- nodes
- nodes/stats
- namespaces
- configmaps
verbs:
- get
- list
- watch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
labels:
k8s-app: metrics-server
name: metrics-server-auth-reader
namespace: kube-system
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: extension-apiserver-authentication-reader
subjects:
- kind: ServiceAccount
name: metrics-server
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
labels:
k8s-app: metrics-server
name: metrics-server:system:auth-delegator
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: system:auth-delegator
subjects:
- kind: ServiceAccount
name: metrics-server
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
labels:
k8s-app: metrics-server
name: system:metrics-server
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: system:metrics-server
subjects:
- kind: ServiceAccount
name: metrics-server
namespace: kube-system
---
apiVersion: v1
kind: Service
metadata:
labels:
k8s-app: metrics-server
name: metrics-server
namespace: kube-system
spec:
ports:
- name: https
port: 443
protocol: TCP
targetPort: https
selector:
k8s-app: metrics-server
---
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
k8s-app: metrics-server
name: metrics-server
namespace: kube-system
spec:
selector:
matchLabels:
k8s-app: metrics-server
strategy:
rollingUpdate:
maxUnavailable: 0
template:
metadata:
labels:
k8s-app: metrics-server
spec:
containers:
- args:
- --cert-dir=/tmp
- --secure-port=4443
- --metric-resolution=30s
- --kubelet-insecure-tls
- --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
#- --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.crt # change to front-proxy-ca.crt for kubeadm
- --requestheader-username-headers=X-Remote-User
- --requestheader-group-headers=X-Remote-Group
- --requestheader-extra-headers-prefix=X-Remote-Extra-
image: registry.cn-beijing.aliyuncs.com/dotbalo/metrics-server:v0.4.1
imagePullPolicy: IfNotPresent
livenessProbe:
failureThreshold: 3
httpGet:
path: /livez
port: https
scheme: HTTPS
periodSeconds: 10
name: metrics-server
ports:
- containerPort: 4443
name: https
protocol: TCP
readinessProbe:
failureThreshold: 3
httpGet:
path: /readyz
port: https
scheme: HTTPS
periodSeconds: 10
securityContext:
readOnlyRootFilesystem: true
runAsNonRoot: true
runAsUser: 1000
volumeMounts:
- mountPath: /tmp
name: tmp-dir
- name: ca-ssl
mountPath: /etc/kubernetes/pki
nodeSelector:
kubernetes.io/os: linux
priorityClassName: system-cluster-critical
serviceAccountName: metrics-server
volumes:
- emptyDir: {}
name: tmp-dir
- name: ca-ssl
hostPath:
path: /etc/kubernetes/pki
---
apiVersion: apiregistration.k8s.io/v1
kind: APIService
metadata:
labels:
k8s-app: metrics-server
name: v1beta1.metrics.k8s.io
spec:
group: metrics.k8s.io
groupPriorityMinimum: 100
insecureSkipTLSVerify: true
service:
name: metrics-server
namespace: kube-system
version: v1beta1
versionPriority: 100----
kubectl apply -f comp.yaml
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安装dashbaord cd /root/k8s-ha-install/dashboard
kubectl apply -f dashboard-user.yaml
kubectl apply -f dashboard.yamlkubectl get pod -n kubernetes-dashboard
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kubectl edit svc kubernetes-dashboard -n kubernetes-dashboard
改一下svc 的 类型：
type: Cluster-IP
改为： type: NodePort
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kubectl get svc -n kubernetes-dashboard -o wide
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kubectl -n kube-system describe secret $(kubectl -n kube-system get secret | grep admin-user | awk \'{print $1}\')
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集群测试：
kubectl get svc -n kube-system telnet 10.96.0.1 443
telnet 10.96.0.10 53 
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部署kuborad
在node 节点上面 下载镜像：
docker pulleipwork/kuboard:latestkubectl apply -f https://kuboard.cn/install-script/kuboard.yamlkubectl get pods -l k8s.kuboard.cn/name=kuboard -n kube-systemkubectl get svc,pod -n kube-system -o wide |grep kuboard
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获取Token# 如果您参考 www.kuboard.cn 提供的文档安装 Kuberenetes，可在第一个 Master 节点上执行此命令echo $(kubectl -n kube-system get secret $(kubectl -n kube-system get secret | grep kuboard-user | awk \'{print $1}\') -o go-template=\'{{.data.token}}\' | base64 -d)
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!
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卸载：kuborad-v2
kubectl delete -f https://kuboard.cn/install-script/kuboard.yaml安装kuboard-v3
在node 节点上面下载镜像：
docker pull eipwork/kuboard:v3
docker pull eipwork/etcd-host:3.4.16-1
mkdir /data
chmod 777 -R /data配置镜像下载策略
wget https://addons.kuboard.cn/kuboard/kuboard-v3.yaml
vim kuboard-v3.ymal
---
imagePullPolicy: IfNotPresent(共有两处)
---kubectl apply -f kuboard-v3.yaml
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访问 Kuboard
在浏览器中打开链接 http://your-node-ip-address:30080输入初始用户名和密码，并登录用户名： admin
密码： Kuboard123
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