一、部署环境
二）初始化实验环境
1、修改yum源，各节点上操作（云环境忽略该步骤）
- 备份原来的yum源 mv /etc/yum.repos.d/CentOS-Base.repo/etc/yum.repos.d/CentOS-Base.repo.backup - 下载阿里的yum源 wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo - 生成新的yum缓存 yum makecache fast - 配置安装k8s需要的yum源 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=0 EOF - 清理yum缓存 yum clean all - 生成新的yum缓存 yum makecache fast - 更新yum源 yum -y update - 安装软件包 yum -y install yum-utilsdevice-mapper-persistent-data lvm2 - 添加新的软件源 yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo yum clean all yum makecache fast
2、安装基础软件包，各节点操作
安装基础软件包，各个节点操作 yum -y install wget net-tools nfs-utils lrzsz gcc gcc-c++ make cmake libxml2-devel openssl-devel curl curl-devel unzip sudo ntp libaio-devel wget vim ncurses-devel autoconf automake zlib-devel python-devel epel-release openssh-server socat ipvsadm conntrack ntpdate
3、关闭firewalld防火墙，各个节点操作
systemctl disable firewalld
systemctl stop firewalld
4、安装iptables，各个节点操作
yum install iptables-services -y service iptables stop && systemctl disable iptables /usr/sbin/iptables -P FORWARD ACCEPT /usr/sbin/iptables -X /usr/sbin/iptables -F -t nat /usr/sbin/iptables -X -t nat
5、时间同步，各个节点操作
ntpdate cn.pool.ntp.org crontab -e * */1 * * * /usr/sbin/ntpdate cn.pool.ntp.org
6、关闭selinux，各个节点操作
修改/etc/sysconfig/selinux文件 sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/sysconfig/selinux sed -i "s/SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config setenforce 0
7、关闭交换分区，各节点
swapoff -a # 永久禁用，打开/etc/fstab注释掉swap那一行。 sed -i 's/.*swap.*/#&/' /etc/fstab
8、修改内核参数，各个节点操作
echo 1 > /proc/sys/net/bridge/bridge-nf-call-iptables echo 1 >/proc/sys/net/bridge/bridge-nf-call-ip6tables cat > /etc/sysctl.d/k8s.conf <<-EOF net.bridge.bridge-nf-call-iptables=1 net.bridge.bridge-nf-call-ip6tables=1 net.ipv4.ip_forward=1 vm.swappiness=0 vm.overcommit_memory=1 vm.panic_on_oom=0 fs.inotify.max_user_instances=8192 fs.inotify.max_user_watches=1048576 fs.file-max=52706963 fs.nr_open=52706963 net.ipv6.conf.all.disable_ipv6=1 net.netfilter.nf_conntrack_max=2310720 EOF sysctl --system
9、安装ipvs模块
cat > /etc/sysconfig/modules/br_netfilter.modules << EOF modprobe br_netfilter EOF chmod 755 /etc/sysconfig/modules/br_netfilter.modules ##安装ipvs模块 cat > /etc/sysconfig/modules/ipvs.modules <<EOF #!/bin/bash modprobe -- ip_vs modprobe -- ip_vs_rr modprobe -- ip_vs_wrr modprobe -- ip_vs_sh modprobe -- nf_conntrack_ipv4 EOF chmod 755 /etc/sysconfig/modules/ipvs.modules && bash /etc/sysconfig/modules/ipvs.modules && lsmod | grep -e ip_vs -e nf_conntrack_ipv4
10、配置limits.conf
[ $(cat /etc/security/limits.conf|grep '* soft nproc 10240000'|wc -l) -eq 0 ] && echo '* soft nproc 10240000' >>/etc/security/limits.conf [ $(cat /etc/security/limits.conf|grep '* hard nproc 10240000'|wc -l) -eq 0 ] && echo '* hard nproc 10240000' >>/etc/security/limits.conf [ $(cat /etc/security/limits.conf|grep '* soft nofile 10240000'|wc -l) -eq 0 ] && echo '* soft nofile 10240000' >>/etc/security/limits.conf [ $(cat /etc/security/limits.conf|grep '* hard nofile 10240000'|wc -l) -eq 0 ] && echo '* hard nofile 10240000' >>/etc/security/limits.conf
配置master01到其他各节点无密码登陆
11、安装ansible，在192.168.31.72节点上
配置master01到其他各节点无密码登陆 yum -y install ansible ssh-keygen -t rsa for i in 70 71 72 73 75 82 83 84 86 67 68 69 64 ;do ssh-copy-id -i .ssh/id_rsa.pub root@192.168.31.$i;done [root@harbor-ansible ~]# cat /etc/ansible/hosts [haproxy] 192.168.31.70 192.168.31.71 [k8s-master] 192.168.31.72 192.168.31.73 192.168.31.75 [k8s-worker] 192.168.31.82 192.168.31.83 192.168.31.84 192.168.31.86 192.168.31.67 192.168.31.68 192.168.31.69 192.168.31.64
9、在master01节点上配置hosts文件,使用ansible推送到各节点
在/etc/hosts文件增加如下几行 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 192.168.31.72 master01.ziioffice.com master01 192.168.31.73 master02.ziioffice.com master02 192.168.31.75 master03.ziioffice.com master03 192.168.31.82 worker01.ziioffice.com worker01 192.168.31.83 worker02.ziioffice.com worker02 192.168.31.84 worker03.ziioffice.com worker03 192.168.31.86 worker04.ziioffice.com worker04 192.168.31.67 worker05.ziioffice.com worker05 192.168.31.68 worker06.ziioffice.com worker06 192.168.31.64 worker07.ziioffice.com worker07 192.168.31.69 worker08.ziioffice.com worker08 #推送hosts文件到其他节点上 ansible all -m copy -a 'src=./hosts dest=/etc/hosts'
二）部署高可用keepalived+haproxy
#安装部署haproxy mkdir -p /opt/apply cd /usr/local/src/ wget http://download.51yuki.cn/haproxy-1.8.17.tar.gz tar xvf haproxy-1.8.17.tar.gz cd haproxy-1.8.17/ yum install gcc pcre pcre-devel openssl openssl-devel -y make TARGET=linux2628 USE_PCRE=1 USE_OPENSSL=1 USE_ZLIB=1 PREFIX=/opt/apply/haproxy cd /usr/local/src/haproxy-1.8.17/contrib/systemd make install PREFIX=/opt/apply/haproxy
#准备haproxy的启动文件 cat > /etc/init.d/haproxy <<-EOF #!/bin/bash # # chkconfig: - 85 15 # description: HA-Proxy is a TCP/HTTP reverse proxy which is particularly suited # for high availability environments. # processname: haproxy # config: /etc/haproxy/haproxy.cfg # pidfile: /var/run/haproxy.pid # Script Author: Simon Matter <simon.matter@invoca.ch> # Version: 2004060600 # Source function library. if [ -f /etc/init.d/functions ]; then . /etc/init.d/functions elif [ -f /etc/rc.d/init.d/functions ] ; then . /etc/rc.d/init.d/functions else exit 0 fi # Source networking configuration. . /etc/sysconfig/network # Check that networking is up. #[ ${NETWORKING} == "no" ] && exit 0 # This is our service name BASENAME=`basename $0` if [ -L $0 ]; then BASENAME=`find $0 -name $BASENAME -printf %l` BASENAME=`basename $BASENAME` fi BIN=/opt/apply/haproxy/sbin/haproxy CFG=/etc/haproxy/haproxy.cfg [ -f $CFG ] || exit 1 PIDFILE=/var/run/haproxy.pid LOCKFILE=/var/lock/subsys/haproxy RETVAL=0 start() { quiet_check if [ $? -ne 0 ]; then echo "Errors found in configuration file, check it with '$BASENAME check'." return 1 fi echo -n "Starting $BASENAME: " daemon $BIN -D -f $CFG -p $PIDFILE RETVAL=$? echo [ $RETVAL -eq 0 ] && touch $LOCKFILE return $RETVAL } stop() { echo -n "Shutting down $BASENAME: " killproc $BASENAME -USR1 RETVAL=$? echo [ $RETVAL -eq 0 ] && rm -f $LOCKFILE [ $RETVAL -eq 0 ] && rm -f $PIDFILE return $RETVAL } restart() { quiet_check if [ $? -ne 0 ]; then echo "Errors found in configuration file, check it with '$BASENAME check'." return 1 fi stop start } reload() { if ! [ -s $PIDFILE ]; then return 0 fi quiet_check if [ $? -ne 0 ]; then echo "Errors found in configuration file, check it with '$BASENAME check'." return 1 fi $BIN -D -f $CFG -p $PIDFILE -sf $(cat $PIDFILE) } check() { $BIN -c -q -V -f $CFG } quiet_check() { $BIN -c -q -f $CFG } rhstatus() { status $BASENAME } condrestart() { [ -e $LOCKFILE ] && restart || : } # See how we were called. case "$1" in start) start ;; stop) stop ;; restart) restart ;; reload) reload ;; condrestart) condrestart ;; status) rhstatus ;; check) check ;; *) echo $"Usage: $BASENAME {start|stop|restart|reload|condrestart|status|check}" exit 1 esac exit $? EOF chmod +x /etc/init.d/haproxy
#准备配置文件 [root@haproxy01 haproxy-1.8.17]# cat /etc/haproxy/haproxy.cfg global maxconn 100000 chroot /opt/apply/haproxy uid 99 gid 99 daemon nbproc 1 pidfile /opt/apply/haproxy/run/haproxy.pid log 127.0.0.1 local3 info defaults option http-keep-alive option forwardfor maxconn 100000 mode http timeout connect 300000ms timeout client 300000ms timeout server 300000ms listen stats mode http bind 0.0.0.0:9999 stats enable log global stats uri /haproxy-status stats auth haadmin:q1w2e3r4ys #启动haproxy systemctl daemon-reload systemctl start haproxy chkconfig --add haproxy chkconfig haproxy on #开启haproxy的日志 yum -y install rsyslog vim /etc/rsyslog.conf $ModLoad imudp $UDPServerRun 514 local3.* /var/log/haproxy.log #保存后的日志目录 systemctl enable rsyslog systemctl restart rsyslog
#部署keepalived yum -y install libnfnetlink-devel libnfnetlink ipvsadm libnl libnl-devel libnl3 libnl3-devel lm_sensors-libs net-snmp-agent-libs net-snmp-libs openssh-server openssh-clients openssl openssl-devel automake iproute cd /usr/local/src wget https://www.keepalived.org/software/keepalived-1.4.5.tar.gz tar xf keepalived-1.4.5.tar.gz cd keepalived-1.4.5 ./configure --prefix=/opt/apply/keepalived --disable-fwmark make && make install #复制相关配置文件及启动脚本 cp /usr/local/src/keepalived-1.4.5/keepalived/etc/init.d/keepalived.rh.init /etc/sysconfig/keepalived.sysconfig cp /usr/local/src/keepalived-1.4.5/keepalived/keepalived.service /usr/lib/systemd/system/ cp /usr/local/src/keepalived-1.4.5/bin/keepalived /usr/sbin/ 修改启动脚本 [Unit] Description=LVS and VRRP High Availability Monitor After= network-online.target syslog.target Wants=network-online.target [Service] Type=forking PIDFile=/var/run/keepalived.pid KillMode=process EnvironmentFile=-/etc/sysconfig/keepalived ExecStart=/usr/sbin/keepalived $KEEPALIVED_OPTIONS ExecReload=/bin/kill -HUP $MAINPID [Install] WantedBy=multi-user.target #启动 systemctl daemon-reload systemctl enable keepalived.service systemctl restart keepalived.service 案例：配置高可用master节点 1）配置haproxy （在两个节点上分别配置） global maxconn 100000 chroot /opt/apply/haproxy uid 99 gid 99 daemon nbproc 1 pidfile /opt/apply/haproxy/run/haproxy.pid log 127.0.0.1 local3 info defaults option http-keep-alive option forwardfor maxconn 100000 mode http timeout connect 300000ms timeout client 300000ms timeout server 300000ms listen stats mode http bind 0.0.0.0:9999 stats enable log global stats uri /haproxy-status stats auth haadmin:q1w2e3r4ys listen k8s-api-server-6443 bind 192.168.31.80:6443 mode tcp server k8s-master01-72 192.168.31.72:6443 check inter 2000 fall 3 rise 5 server k8s-master02-73 192.168.31.73:6443 check inter 2000 fall 3 rise 5 server k8s-master03-75 192.168.31.75:6443 check inter 2000 fall 3 rise 5 #配置keepalived [root@haproxy01 apply]# vim /etc/keepalived/keepalived.conf global_defs { notification_email { xionghaihua@distrii.com } notification_email_from it@distrii.com smtp_server smtp.distrii.com smtp_connect_timeout 30 router_id LVS_DEVEL } vrrp_instance VI_1 { state MASTER interface eth0 virtual_router_id 80 priority 100 advert_int 1 #unicast_src_ip 192.168.31.70 #unicast_peer { # 192.168.31.71 #} authentication { auth_type PASS auth_pass Aa123321 } virtual_ipaddress { 192.168.31.80 dev eth0 label eth0:0 } } [root@haproxy02 apply]# vim /etc/keepalived/keepalived.conf global_defs { notification_email { xionghaihua@distrii.com } notification_email_from it@distrii.com smtp_server smtp.distrii.com smtp_connect_timeout 3 router_id LVS_DEVEL } vrrp_instance VI_1 { state BACKUP interface eth0 virtual_router_id 80 priority 98 advert_int 1 #unicast_src_ip 192.168.31.71 #unicast_peer { # 192.168.31.70 #} authentication { auth_type PASS auth_pass Aa123321 } virtual_ipaddress { 192.168.31.80 dev eth0 label eth0:0 } } systemctl restart haproxy.service systemctl restart keepalived.service
三）安装kubernetes1.17.3高可用集群
1、安装docker19.03，各个节点操作
#查看支持的版本 yum list docker-ce --showduplicates |sort-r #下载19.03.7 yum install -y docker-ce-19* systemctl enable docker && systemctl start docker #修改docker配置文件 cat > /etc/docker/daemon.json <<EOF { "registry-mirrors": ["https://ziqva2l2.mirror.aliyuncs.com"], "insecure-registries": ["192.168.31.30"], "graph": "/data/docker", "exec-opts": ["native.cgroupdriver=systemd"], "log-driver": "json-file", "log-opts": { "max-size": "300m" }, "storage-driver": "overlay2", "storage-opts": [ "overlay2.override_kernel_check=true" ] } EOF #重启docker systemctl daemon-reload && systemctl restartdocker
2）安装kubernetes1.17.3
2.1)在master01-master03，worker01-worker08节点上操作 yum install kubeadm-1.17.3 kubelet-1.17.3 -y systemctl enable kubelet 2.2）上传镜像到k8s所有节点上，手动解压镜像 链接：https://pan.baidu.com/s/10wWe9WNBspZaCSL_zspzpQ 提取码：4k07 docker load -i kube-apiserver.tar.gz docker load -i kube-scheduler.tar.gz docker load -i kube-controller-manager.tar.gz docker load -i pause.tar.gz docker load -i cordns.tar.gz docker load -i etcd.tar.gz docker load -i kube-proxy.tar.gz docker load -i cni.tar.gz docker load -i calico-node.tar.gz docker load -i kubernetes-dashboard_1_10.tar.gz docker load -i metrics-server-amd64_0_3_1.tar.gz docker load -i addon.tar.gz docker load -i traefik_1_7_9.tar.gz docker load -i dashboard_2_0_0.tar.gz docker load -i metrics-scrapter-1-0-1.tar.gz
2.3）在master1节点初始化k8s集群，在master1上操作如下
[root@master01 k8s]# cat /data/k8s/kubeadm-config.yaml apiVersion: kubeadm.k8s.io/v1beta2 kind: ClusterConfiguration kubernetesVersion: v1.17.3 controlPlaneEndpoint: "192.168.31.80:6443" apiServer: certSANs: - 192.168.31.72 - 192.168.31.73 - 192.168.31.75 - 192.168.31.80 - 192.168.31.82 - 192.168.31.83 - 192.168.31.84 - 192.168.31.86 - 192.168.31.69 - 192.168.31.64 - 192.168.31.67 - 192.168.31.68 networking: podSubnet: "10.241.0.0/16" dnsDomain: "ziioffice.cn" serviceSubnet: "10.96.0.0/12" #imageRepository: registry.aliyuncs.com/kubernetes --- apiVersion: kubeproxy.config.k8s.io/v1alpha1 kind: KubeProxyConfiguration mode: ipvs #初始化k8s集群 kubeadm init --config kubeadm-config.yaml 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/config You 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 control-plane nodes by copying certificate authorities and service account keys on each node and then running the following as root: kubeadm join 192.168.31.80:6443 --token hknex2.0fo9d2ewerpucqde --discovery-token-ca-cert-hash sha256:12487231d2fa223ca4708359ca5f32db238337c024b8caf083d8c0956e640afc --control-plane Then you can join any number of worker nodes by running the following on each as root: kubeadm join 192.168.31.80:6443 --token hknex2.0fo9d2ewerpucqde --discovery-token-ca-cert-hash sha256:12487231d2fa223ca4708359ca5f32db238337c024b8caf083d8c0956e640afc
2.4）在master1节点执行如下，这样才能有权限操作k8s资源
mkdir -p $HOME/.kube sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config sudo chown $(id -u):$(id -g) $HOME/.kube/config
2.5）安装网络calico插件
# Calico Version v3.5.3
# https://docs.projectcalico.org/v3.5/releases#v3.5.3
# This manifest includes the following component versions:
# calico/node:v3.5.3
# calico/cni:v3.5.3
# This ConfigMap is used to configure a self-hosted Calico installation.
kind: ConfigMap
apiVersion: v1
metadata:
name: calico-config
namespace: kube-system
data:
# Typha is disabled.
typha_service_name: "none"
# Configure the Calico backend to use.
calico_backend: "bird"
# Configure the MTU to use
veth_mtu: "1440"
# The CNI network configuration to install on each node. The special
# values in this config will be automatically populated.
cni_network_config: |-
{
"name": "k8s-pod-network",
"cniVersion": "0.3.0",
"plugins": [
{
"type": "calico",
"log_level": "info",
"datastore_type": "kubernetes",
"nodename": "__KUBERNETES_NODE_NAME__",
"mtu": __CNI_MTU__,
"ipam": {
"type": "host-local",
"subnet": "usePodCidr"
},
"policy": {
"type": "k8s"
},
"kubernetes": {
"kubeconfig": "__KUBECONFIG_FILEPATH__"
}
},
{
"type": "portmap",
"snat": true,
"capabilities": {"portMappings": true}
}
]
}
---
# This manifest installs the calico/node container, as well
# as the Calico CNI plugins and network config on
# each master and worker node in a Kubernetes cluster.
kind: DaemonSet
apiVersion: apps/v1
metadata:
name: calico-node
namespace: kube-system
labels:
k8s-app: calico-node
spec:
selector:
matchLabels:
k8s-app: calico-node
updateStrategy:
type: RollingUpdate
rollingUpdate:
maxUnavailable: 1
template:
metadata:
labels:
k8s-app: calico-node
annotations:
# This, along with the CriticalAddonsOnly toleration below,
# marks the pod as a critical add-on, ensuring it gets
# priority scheduling and that its resources are reserved
# if it ever gets evicted.
scheduler.alpha.kubernetes.io/critical-pod: ''
spec:
nodeSelector:
beta.kubernetes.io/os: linux
hostNetwork: true
tolerations:
# Make sure calico-node gets scheduled on all nodes.
- effect: NoSchedule
operator: Exists
# Mark the pod as a critical add-on for rescheduling.
- key: CriticalAddonsOnly
operator: Exists
- effect: NoExecute
operator: Exists
serviceAccountName: calico-node
# Minimize downtime during a rolling upgrade or deletion; tell Kubernetes to do a "force
# deletion": https://kubernetes.io/docs/concepts/workloads/pods/pod/#termination-of-pods.
terminationGracePeriodSeconds: 0
initContainers:
# This container installs the Calico CNI binaries
# and CNI network config file on each node.
- name: install-cni
image: quay.io/calico/cni:v3.5.3
command: ["/install-cni.sh"]
env:
# Name of the CNI config file to create.
- name: CNI_CONF_NAME
value: "10-calico.conflist"
# The CNI network config to install on each node.
- name: CNI_NETWORK_CONFIG
valueFrom:
configMapKeyRef:
name: calico-config
key: cni_network_config
# Set the hostname based on the k8s node name.
- name: KUBERNETES_NODE_NAME
valueFrom:
fieldRef:
fieldPath: spec.nodeName
# CNI MTU Config variable
- name: CNI_MTU
valueFrom:
configMapKeyRef:
name: calico-config
key: veth_mtu
# Prevents the container from sleeping forever.
- name: SLEEP
value: "false"
volumeMounts:
- mountPath: /host/opt/cni/bin
name: cni-bin-dir
- mountPath: /host/etc/cni/net.d
name: cni-net-dir
containers:
# Runs calico/node container on each Kubernetes node. This
# container programs network policy and routes on each
# host.
- name: calico-node
image: quay.io/calico/node:v3.5.3
env:
# Use Kubernetes API as the backing datastore.
- name: DATASTORE_TYPE
value: "kubernetes"
# Wait for the datastore.
- name: WAIT_FOR_DATASTORE
value: "true"
# Set based on the k8s node name.
- name: NODENAME
valueFrom:
fieldRef:
fieldPath: spec.nodeName
# Choose the backend to use.
- name: CALICO_NETWORKING_BACKEND
valueFrom:
configMapKeyRef:
name: calico-config
key: calico_backend
# Cluster type to identify the deployment type
- name: CLUSTER_TYPE
value: "k8s,bgp"
# Auto-detect the BGP IP address.
- name: IP
value: "autodetect"
- name: IP_AUTODETECTION_METHOD
value: "can-reach=192.168.31.82"
# Enable IPIP
- name: CALICO_IPV4POOL_IPIP
value: "Always"
# Set MTU for tunnel device used if ipip is enabled
- name: FELIX_IPINIPMTU
valueFrom:
configMapKeyRef:
name: calico-config
key: veth_mtu
# The default IPv4 pool to create on startup if none exists. Pod IPs will be
# chosen from this range. Changing this value after installation will have
# no effect. This should fall within `--cluster-cidr`.
- name: CALICO_IPV4POOL_CIDR
value: "10.241.0.0/16"
# Disable file logging so `kubectl logs` works.
- name: CALICO_DISABLE_FILE_LOGGING
value: "true"
# Set Felix endpoint to host default action to ACCEPT.
- name: FELIX_DEFAULTENDPOINTTOHOSTACTION
value: "ACCEPT"
# Disable IPv6 on Kubernetes.
- name: FELIX_IPV6SUPPORT
value: "false"
# Set Felix logging to "info"
- name: FELIX_LOGSEVERITYSCREEN
value: "info"
- name: FELIX_HEALTHENABLED
value: "true"
securityContext:
privileged: true
resources:
requests:
cpu: 250m
livenessProbe:
httpGet:
path: /liveness
port: 9099
host: localhost
periodSeconds: 10
initialDelaySeconds: 10
failureThreshold: 6
readinessProbe:
exec:
command:
- /bin/calico-node
- -bird-ready
- -felix-ready
periodSeconds: 10
volumeMounts:
- mountPath: /lib/modules
name: lib-modules
readOnly: true
- mountPath: /run/xtables.lock
name: xtables-lock
readOnly: false
- mountPath: /var/run/calico
name: var-run-calico
readOnly: false
- mountPath: /var/lib/calico
name: var-lib-calico
readOnly: false
volumes:
# Used by calico/node.
- name: lib-modules
hostPath:
path: /lib/modules
- name: var-run-calico
hostPath:
path: /var/run/calico
- name: var-lib-calico
hostPath:
path: /var/lib/calico
- name: xtables-lock
hostPath:
path: /run/xtables.lock
type: FileOrCreate
# Used to install CNI.
- name: cni-bin-dir
hostPath:
path: /opt/cni/bin
- name: cni-net-dir
hostPath:
path: /etc/cni/net.d
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: calico-node
namespace: kube-system
---
# Create all the CustomResourceDefinitions needed for
# Calico policy and networking mode.
apiVersion: apiextensions.k8s.io/v1beta1
kind: CustomResourceDefinition
metadata:
name: felixconfigurations.crd.projectcalico.org
spec:
scope: Cluster
group: crd.projectcalico.org
version: v1
names:
kind: FelixConfiguration
plural: felixconfigurations
singular: felixconfiguration
---
apiVersion: apiextensions.k8s.io/v1beta1
kind: CustomResourceDefinition
metadata:
name: bgppeers.crd.projectcalico.org
spec:
scope: Cluster
group: crd.projectcalico.org
version: v1
names:
kind: BGPPeer
plural: bgppeers
singular: bgppeer
---
apiVersion: apiextensions.k8s.io/v1beta1
kind: CustomResourceDefinition
metadata:
name: bgpconfigurations.crd.projectcalico.org
spec:
scope: Cluster
group: crd.projectcalico.org
version: v1
names:
kind: BGPConfiguration
plural: bgpconfigurations
singular: bgpconfiguration
---
apiVersion: apiextensions.k8s.io/v1beta1
kind: CustomResourceDefinition
metadata:
name: ippools.crd.projectcalico.org
spec:
scope: Cluster
group: crd.projectcalico.org
version: v1
names:
kind: IPPool
plural: ippools
singular: ippool
---
apiVersion: apiextensions.k8s.io/v1beta1
kind: CustomResourceDefinition
metadata:
name: hostendpoints.crd.projectcalico.org
spec:
scope: Cluster
group: crd.projectcalico.org
version: v1
names:
kind: HostEndpoint
plural: hostendpoints
singular: hostendpoint
---
apiVersion: apiextensions.k8s.io/v1beta1
kind: CustomResourceDefinition
metadata:
name: clusterinformations.crd.projectcalico.org
spec:
scope: Cluster
group: crd.projectcalico.org
version: v1
names:
kind: ClusterInformation
plural: clusterinformations
singular: clusterinformation
---
apiVersion: apiextensions.k8s.io/v1beta1
kind: CustomResourceDefinition
metadata:
name: globalnetworkpolicies.crd.projectcalico.org
spec:
scope: Cluster
group: crd.projectcalico.org
version: v1
names:
kind: GlobalNetworkPolicy
plural: globalnetworkpolicies
singular: globalnetworkpolicy
---
apiVersion: apiextensions.k8s.io/v1beta1
kind: CustomResourceDefinition
metadata:
name: globalnetworksets.crd.projectcalico.org
spec:
scope: Cluster
group: crd.projectcalico.org
version: v1
names:
kind: GlobalNetworkSet
plural: globalnetworksets
singular: globalnetworkset
---
apiVersion: apiextensions.k8s.io/v1beta1
kind: CustomResourceDefinition
metadata:
name: networkpolicies.crd.projectcalico.org
spec:
scope: Namespaced
group: crd.projectcalico.org
version: v1
names:
kind: NetworkPolicy
plural: networkpolicies
singular: networkpolicy
---
# Include a clusterrole for the calico-node DaemonSet,
# and bind it to the calico-node serviceaccount.
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
name: calico-node
rules:
# The CNI plugin needs to get pods, nodes, and namespaces.
- apiGroups: [""]
resources:
- pods
- nodes
- namespaces
verbs:
- get
- apiGroups: [""]
resources:
- endpoints
- services
verbs:
# Used to discover service IPs for advertisement.
- watch
- list
# Used to discover Typhas.
- get
- apiGroups: [""]
resources:
- nodes/status
verbs:
# Needed for clearing NodeNetworkUnavailable flag.
- patch
# Calico stores some configuration information in node annotations.
- update
# Watch for changes to Kubernetes NetworkPolicies.
- apiGroups: ["networking.k8s.io"]
resources:
- networkpolicies
verbs:
- watch
- list
# Used by Calico for policy information.
- apiGroups: [""]
resources:
- pods
- namespaces
- serviceaccounts
verbs:
- list
- watch
# The CNI plugin patches pods/status.
- apiGroups: [""]
resources:
- pods/status
verbs:
- patch
# Calico monitors various CRDs for config.
- apiGroups: ["crd.projectcalico.org"]
resources:
- globalfelixconfigs
- felixconfigurations
- bgppeers
- globalbgpconfigs
- bgpconfigurations
- ippools
- globalnetworkpolicies
- globalnetworksets
- networkpolicies
- clusterinformations
- hostendpoints
verbs:
- get
- list
- watch
# Calico must create and update some CRDs on startup.
- apiGroups: ["crd.projectcalico.org"]
resources:
- ippools
- felixconfigurations
- clusterinformations
verbs:
- create
- update
# Calico stores some configuration information on the node.
- apiGroups: [""]
resources:
- nodes
verbs:
- get
- list
- watch
# These permissions are only requried for upgrade from v2.6, and can
# be removed after upgrade or on fresh installations.
- apiGroups: ["crd.projectcalico.org"]
resources:
- bgpconfigurations
- bgppeers
verbs:
- create
- update
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
name: calico-node
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: calico-node
subjects:
- kind: ServiceAccount
name: calico-node
namespace: kube-system
---
#执行安装
kubectl apply -f calico.yaml
2.6) 把master01节点的证书拷贝到master02和master03上
cd /root && mkdir -p /etc/kubernetes/pki/etcd && mkdir -p ~/.kube/ #拷贝证书 scp /etc/kubernetes/pki/ca.crt master02:/etc/kubernetes/pki/ scp /etc/kubernetes/pki/ca.key master02:/etc/kubernetes/pki/ scp /etc/kubernetes/pki/sa.key master02:/etc/kubernetes/pki/ scp /etc/kubernetes/pki/sa.pub master02:/etc/kubernetes/pki/ scp /etc/kubernetes/pki/front-proxy-ca.crt master02:/etc/kubernetes/pki/ scp /etc/kubernetes/pki/front-proxy-ca.key master02:/etc/kubernetes/pki/ scp /etc/kubernetes/pki/etcd/ca.crt master02:/etc/kubernetes/pki/etcd/ scp /etc/kubernetes/pki/etcd/ca.key master02:/etc/kubernetes/pki/etcd/ scp /etc/kubernetes/pki/ca.crt master03:/etc/kubernetes/pki/ scp /etc/kubernetes/pki/ca.key master03:/etc/kubernetes/pki/ scp /etc/kubernetes/pki/sa.key master03:/etc/kubernetes/pki/ scp /etc/kubernetes/pki/sa.pub master03:/etc/kubernetes/pki/ scp /etc/kubernetes/pki/front-proxy-ca.crt master03:/etc/kubernetes/pki/ scp /etc/kubernetes/pki/front-proxy-ca.key master03:/etc/kubernetes/pki/ scp /etc/kubernetes/pki/etcd/ca.crt master03:/etc/kubernetes/pki/etcd/ scp /etc/kubernetes/pki/etcd/ca.key master03:/etc/kubernetes/pki/etcd/
2.7）证书拷贝之后在master02和master03上执行如下，形成集群
—control-plane：这个参数表示加入到k8s集群的是master节点 #添加master节点 kubeadm join 192.168.31.80:6443 --token hknex2.0fo9d2ewerpucqde --discovery-token-ca-cert-hash sha256:12487231d2fa223ca4708359ca5f32db238337c024b8caf083d8c0956e640afc --control-plane #在master2和master3上操作： mkdir -p $HOME/.kube sudo cp -i /etc/kubernetes/admin.conf$HOME/.kube/config sudo chown $(id -u):$(id -g)$HOME/.kube/config #kubectl get nodes 验证如下 [root@master01 ~]# kubectl get node NAME STATUS ROLES AGE VERSION master01.ziioffice.com Ready master 12m v1.17.3 master02.ziioffice.com Ready master 63s v1.17.3 master03.ziioffice.com Ready master 53s v1.17.3
2.8）添加worker节点
kubeadm join 192.168.31.80:6443 --token hknex2.0fo9d2ewerpucqde --discovery-token-ca-cert-hash sha256:12487231d2fa223ca4708359ca5f32db238337c024b8caf083d8c0956e640afc #在master节点上操作 [root@master01 ~]# kubectl get node [root@master01 kubernetes-1.17.3]# kubectl get nodes NAME STATUS ROLES AGE VERSION master01.ziioffice.com Ready master 83d v1.17.3 master02.ziioffice.com Ready master 83d v1.17.3 master03.ziioffice.com Ready master 83d v1.17.3 worker01.ziioffice.com Ready <none> 83d v1.17.3 worker02.ziioffice.com Ready <none> 83d v1.17.3 worker03.ziioffice.com Ready <none> 83d v1.17.3 worker04.ziioffice.com Ready <none> 82d v1.17.3 worker05.ziioffice.com Ready <none> 49d v1.17.3 worker06.ziioffice.com Ready <none> 49d v1.17.3 worker07.ziioffice.com Ready <none> 47d v1.17.3 worker08.ziioffice.com Ready <none> 47d v1.17.3
三）安装部署addons插件
1）安装dashboard2.0
1.1）装载镜像
docker load -i dashboard_2_0_0.tar.gz docker load -i metrics-scrapter-1-0-1.tar.gz
1.2）编写yaml文件
# Copyright 2017 The Kubernetes Authors. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. apiVersion: v1 kind: Namespace metadata: name: kubernetes-dashboard --- apiVersion: v1 kind: ServiceAccount metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard namespace: kubernetes-dashboard --- kind: Service apiVersion: v1 metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard namespace: kubernetes-dashboard spec: type: NodePort ports: - port: 443 targetPort: 8443 nodePort: 30982 selector: k8s-app: kubernetes-dashboard --- apiVersion: v1 kind: Secret metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard-certs namespace: kubernetes-dashboard type: Opaque --- apiVersion: v1 kind: Secret metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard-csrf namespace: kubernetes-dashboard type: Opaque data: csrf: "" --- apiVersion: v1 kind: Secret metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard-key-holder namespace: kubernetes-dashboard type: Opaque --- kind: ConfigMap apiVersion: v1 metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard-settings namespace: kubernetes-dashboard --- kind: Role apiVersion: rbac.authorization.k8s.io/v1 metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard namespace: kubernetes-dashboard rules: # Allow Dashboard to get, update and delete Dashboard exclusive secrets. - apiGroups: [""] resources: ["secrets"] resourceNames: ["kubernetes-dashboard-key-holder", "kubernetes-dashboard-certs", "kubernetes-dashboard-csrf"] verbs: ["get", "update", "delete"] # Allow Dashboard to get and update 'kubernetes-dashboard-settings' config map. - apiGroups: [""] resources: ["configmaps"] resourceNames: ["kubernetes-dashboard-settings"] verbs: ["get", "update"] # Allow Dashboard to get metrics. - apiGroups: [""] resources: ["services"] resourceNames: ["heapster", "dashboard-metrics-scraper"] verbs: ["proxy"] - apiGroups: [""] resources: ["services/proxy"] resourceNames: ["heapster", "http:heapster:", "https:heapster:", "dashboard-metrics-scraper", "http:dashboard-metrics-scraper"] verbs: ["get"] --- kind: ClusterRole apiVersion: rbac.authorization.k8s.io/v1 metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard rules: # Allow Metrics Scraper to get metrics from the Metrics server - apiGroups: ["metrics.k8s.io"] resources: ["pods", "nodes"] verbs: ["get", "list", "watch"] --- apiVersion: rbac.authorization.k8s.io/v1 kind: RoleBinding metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard namespace: kubernetes-dashboard roleRef: apiGroup: rbac.authorization.k8s.io kind: Role name: kubernetes-dashboard subjects: - kind: ServiceAccount name: kubernetes-dashboard namespace: kubernetes-dashboard --- apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRoleBinding metadata: name: kubernetes-dashboard roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: kubernetes-dashboard subjects: - kind: ServiceAccount name: kubernetes-dashboard namespace: kubernetes-dashboard --- kind: Deployment apiVersion: apps/v1 metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard namespace: kubernetes-dashboard spec: replicas: 1 revisionHistoryLimit: 10 selector: matchLabels: k8s-app: kubernetes-dashboard template: metadata: labels: k8s-app: kubernetes-dashboard spec: containers: - name: kubernetes-dashboard image: kubernetesui/dashboard:v2.0.0-beta8 imagePullPolicy: Always ports: - containerPort: 8443 protocol: TCP args: - --auto-generate-certificates - --namespace=kubernetes-dashboard # Uncomment the following line to manually specify Kubernetes API server Host # If not specified, Dashboard will attempt to auto discover the API server and connect # to it. Uncomment only if the default does not work. # - --apiserver-host=http://my-address:port volumeMounts: - name: kubernetes-dashboard-certs mountPath: /certs # Create on-disk volume to store exec logs - mountPath: /tmp name: tmp-volume livenessProbe: httpGet: scheme: HTTPS path: / port: 8443 initialDelaySeconds: 30 timeoutSeconds: 30 securityContext: allowPrivilegeEscalation: false readOnlyRootFilesystem: true runAsUser: 1001 runAsGroup: 2001 volumes: - name: kubernetes-dashboard-certs secret: secretName: kubernetes-dashboard-certs - name: tmp-volume emptyDir: {} serviceAccountName: kubernetes-dashboard nodeSelector: "beta.kubernetes.io/os": linux # Comment the following tolerations if Dashboard must not be deployed on master tolerations: - key: node-role.kubernetes.io/master effect: NoSchedule --- kind: Service apiVersion: v1 metadata: labels: k8s-app: dashboard-metrics-scraper name: dashboard-metrics-scraper namespace: kubernetes-dashboard spec: ports: - port: 8000 targetPort: 8000 selector: k8s-app: dashboard-metrics-scraper --- kind: Deployment apiVersion: apps/v1 metadata: labels: k8s-app: dashboard-metrics-scraper name: dashboard-metrics-scraper namespace: kubernetes-dashboard spec: replicas: 1 revisionHistoryLimit: 10 selector: matchLabels: k8s-app: dashboard-metrics-scraper template: metadata: labels: k8s-app: dashboard-metrics-scraper annotations: seccomp.security.alpha.kubernetes.io/pod: 'runtime/default' spec: containers: - name: dashboard-metrics-scraper image: kubernetesui/metrics-scraper:v1.0.1 ports: - containerPort: 8000 protocol: TCP livenessProbe: httpGet: scheme: HTTP path: / port: 8000 initialDelaySeconds: 30 timeoutSeconds: 30 volumeMounts: - mountPath: /tmp name: tmp-volume securityContext: allowPrivilegeEscalation: false readOnlyRootFilesystem: true runAsUser: 1001 runAsGroup: 2001 serviceAccountName: kubernetes-dashboard nodeSelector: "beta.kubernetes.io/os": linux # Comment the following tolerations if Dashboard must not be deployed on master tolerations: - key: node-role.kubernetes.io/master effect: NoSchedule volumes: - name: tmp-volume emptyDir: {}
1.3）执行部署并验证
#执行部署 kubectl apply -f kubernetes-dashboard.yaml [root@master01 kubernetes-1.17.3]# kubectl get pods -n kubernetes-dashboard NAME READY STATUS RESTARTS AGE dashboard-metrics-scraper-6b77d4fbb9-bv4nh 1/1 Running 0 13d kubernetes-dashboard-5996555fd8-t94zn 1/1 Running 0 14d [root@master01 kubernetes-1.17.3]# kubectl get svc -n kubernetes-dashboard NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE dashboard-metrics-scraper ClusterIP 10.102.135.99 <none> 8000/TCP 83d kubernetes-dashboard NodePort 10.102.42.5 <none> 443:30982/TCP 83d 访问地址： https://192.168.31.72:30982/
1.4）创建管理员token
1.2.1）通过token登录
#创建管理员token，可查看任何空间权限 kubectl create clusterrolebinding dashboard-cluster-admin --clusterrole=cluster-admin --serviceaccount=kubernetes-dashboard:kubernetes-dashboard
kubectl get secret -n kubernetes-dashboard
kubectl describe secret kubernetes-dashboard-token-jxds4 -n kubernetes-dashboard
token: eyJhbGciOiJSUzI1NiIsImtpZCI6IndMbWR0S3I5S1ptZGtLU1dOUHhMWnZXeU95OXlER29RZ2hzZVktQkNoRUUifQ.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.VBhTKHceR2-rD0_HkUj5KA_Nk_mS_k9qsnq5ZJzeezpVUaPFaaSXgp4yCZzOTYyRlgpFduobOusdlJKCM-4qmu7s2h5xNu1fn53LCpRY0Se17Q9pRQbZ8EvlHKraxqGlA9dPcXKQYkS61OSTPTaGPUOuYmEvs_TW7X60P6LH-Vg6uZEIiQCV40lgnwBdO61LUuCZHnEMzDKwtNL25ire0ZQrWfjGG6NDGYF-tlNojImFE_qQcIc6fFidRtqJE1VcYw1REf1iIPAXY5HAHiXfOTRprx9MDRx4_5dpuq8Se2xmTcly05t_7gljGnmxCc4B2Fzf7zqwK-I46-KQdDJN7A
1.2.2）通过kubeconfig登录 kubectl config set-cluster kubernetes --certificate-authority=./ca.crt --server="https://192.168.31.80:6443" --embed-certs=true --kubeconfig=/root/kube-admin.conf
ADMIN_TOKEN=$(kubectl get secret kubernetes-dashboard-token-jxds4 -n kubernetes-dashboard -o jsonpath={.data.token}|base64 -d)
kubectl config set-credentials all-admin --token=$ADMIN_TOKEN --kubeconfig=/root/kube-admin.conf
kubectl config set-context all-admin@kubernetes --cluster=kubernetes --user=all-admin --kubeconfig=/root/kube-admin.conf
kubectl config use-context all-admin@kubernetes --kubeconfig=/root/kube-admin.conf
#把刚才的kubeconfig文件kube-admin.conf复制到桌面 浏览器访问时使用kubeconfig认证，把刚才的kube-admin.conf导入到web界面，那么就可以登陆了
1.5）创建只能管理指定名称空间的token
创建普通用户dev-admin的token，只能管理dev名称空间 #创建用户 kubectl create namespace dev kubectl create serviceaccount dev-admin -n dev kubectl get secret -n dev|grep dev-admin dev-admin-token-bjqv7 kubernetes.io/service-account-token 3 39s
[root@master01 pki]# kubectl describe secret dev-admin-token-bjqv7 -n dev 显示如下： eyJhbGciOiJSUzI1NiIsImtpZCI6IndMbWR0S3I5S1ptZGtLU1dOUHhMWnZXeU95OXlER29RZ2hzZVktQkNoRUUifQ.eyJpc3MiOiJrdWJlcm5ldGVzL3NlcnZpY2VhY2NvdW50Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9uYW1lc3BhY2UiOiJkZXYiLCJrdWJlcm5ldGVzLmlvL3NlcnZpY2VhY2NvdW50L3NlY3JldC5uYW1lIjoiZGV2LWFkbWluLXRva2VuLWJqcXY3Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9zZXJ2aWNlLWFjY291bnQubmFtZSI6ImRldi1hZG1pbiIsImt1YmVybmV0ZXMuaW8vc2VydmljZWFjY291bnQvc2VydmljZS1hY2NvdW50LnVpZCI6IjAzYzBiYWM3LTA0ZTctNDYwYi04Y2ExLTIzMmNiNjExZjA4OSIsInN1YiI6InN5c3RlbTpzZXJ2aWNlYWNjb3VudDpkZXY6ZGV2LWFkbWluIn0.MOlHeK6zmJp31vJIkgRRGL0niTMZa2qrdsYmLynXf0yFHJpLbUasPj4b3T5Bp46YRYdMNV65ODK2b1iAEE4li2mU8ZzeyJZdUsNUYdbXO0D6N9IrbcxScep6me6BFAYnSyabN4oOP7S1K1BeitcCs48_1YLbuFCAVRO-jcNYektUPpoigNH2dp8z7cNSU2KbouY2YY_0YZWr1EcyGMrk5X7YiMPKfka-YPhB_CQO93MS2gJVXvuVoOthZukcH8lFybFCPDWtJOolxa-fCXFfL4V8NQ7_daQ39JHFS2UGUXPzUxiNdZvHAlBsG5jwxOCfB8el98SfFpq1SzvbaMqpCQ #给用户授权 [root@master01 pki]# kubectl create rolebinding dev-admin --clusterrole=cluster-admin --serviceaccount=dev:dev-admin -n dev rolebinding.rbac.authorization.k8s.io/dev-admin created
#通过kubeconfig登录 把token令牌封装成kubeconfig，通过kubeconfig登陆dashboard，创建一个只能管理指定名称空间的kubeconfig文件 在k8s的master节点操作 [root@master01 pki]# kubectl get secret -n dev|grep dev-admin dev-admin-token-bjqv7 kubernetes.io/service-account-token 3 30m
cd /etc/kubernetes/pki #创建cluster kubectl config set-cluster kubernetes --certificate-authority=./ca.crt --server="https://192.168.31.80:6443" --embed-certs=true --kubeconfig=/root/kube-dev.conf #开始创建credentials DEF_NS_ADMIN_TOKEN=$(kubectl get secret dev-admin-token-bjqv7 -n dev -o jsonpath={.data.token}|base64 -d) kubectl config set-credentials dev-admin --token=$DEF_NS_ADMIN_TOKEN --kubeconfig=/root/kube-dev.conf #创建context kubectl config set-context dev-admin@kubernetes --cluster=kubernetes --user=dev-admin --kubeconfig=/root/kube-dev.conf #切换context的current-context是dev-admin@kubernetes kubectl config use-context dev-admin@kubernetes --kubeconfig=/root/kube-dev.conf #把刚才的kubeconfig文件kube-dev.conf复制到桌面 浏览器访问时使用kubeconfig认证，把刚才的kube-dev.conf导入到web界面，那么就可以登陆了
2) 部署ingress controller
2.1）#生成openssl.cnf文件，这个文件里面把签发证书时需要的参数已经定义好
echo """ [req] distinguished_name = req_distinguished_name prompt = yes [ req_distinguished_name ] countryName = Country Name (2 letter code) countryName_value = CN stateOrProvinceName = State or Province Name (full name) stateOrProvinceName_value = Shanghai localityName = Locality Name (eg, city) localityName_value = Shanghai organizationName = Organization Name (eg, company) organizationName_value = Channelsoft organizationalUnitName = Organizational Unit Name (eg, section) organizationalUnitName_value = R & D Department commonName = Common Name (eg, your name or your server's hostname) commonName_value = *.ziioffice.com emailAddress = Email Address emailAddress_value = xionghaihua@distrii.com """ > ./openssl.cnf
2.2）生成一个证书
openssl req -newkey rsa:4096 -nodes -config ./openssl.cnf -days 3650 -x509 -out ./tls.crt -keyout ./tls.key #创建一个secret对象 kubectl create -n kube-system secret tls ssl --cert ./tls.crt --key ./tls.key
2.3）编写traefik.yaml文件
--- kind: ClusterRole apiVersion: rbac.authorization.k8s.io/v1beta1 metadata: name: traefik-ingress-controller rules: - apiGroups: - "" resources: - services - endpoints - secrets verbs: - get - list - watch - apiGroups: - extensions resources: - ingresses verbs: - get - list - watch --- kind: ClusterRoleBinding apiVersion: rbac.authorization.k8s.io/v1beta1 metadata: name: traefik-ingress-controller roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: traefik-ingress-controller subjects: - kind: ServiceAccount name: traefik-ingress-controller namespace: kube-system --- apiVersion: v1 kind: ServiceAccount metadata: name: traefik-ingress-controller namespace: kube-system --- kind: ConfigMap apiVersion: v1 metadata: name: traefik-conf namespace: kube-system data: traefik.toml: | insecureSkipVerify = true defaultEntryPoints = ["http","https"] [entryPoints] [entryPoints.http] address = ":80" [entryPoints.https] address = ":443" [entryPoints.https.tls] [[entryPoints.https.tls.certificates]] CertFile = "/ssl/tls.crt" KeyFile = "/ssl/tls.key" --- kind: DaemonSet apiVersion: apps/v1 metadata: name: traefik-ingress-controller namespace: kube-system labels: k8s-app: traefik-ingress-lb spec: selector: matchLabels: k8s-app: traefik-ingress-lb name: traefik-ingress-lb template: metadata: labels: k8s-app: traefik-ingress-lb name: traefik-ingress-lb spec: serviceAccountName: traefik-ingress-controller tolerations: - key: node-role.kubernetes.io/master effect: NoSchedule terminationGracePeriodSeconds: 60 hostNetwork: true nodeSelector: ingress: traefik volumes: - name: ssl secret: secretName: ssl - name: config configMap: name: traefik-conf containers: - image: k8s.gcr.io/traefik:1.7.9 name: traefik-ingress-lb ports: - name: http containerPort: 80 hostPort: 80 - name: admin containerPort: 8080 securityContext: privileged: true args: - --configfile=/config/traefik.toml - -d - --web - --kubernetes volumeMounts: - mountPath: "/ssl" name: "ssl" - mountPath: "/config" name: "config" --- kind: Service apiVersion: v1 metadata: name: traefik-ingress-service spec: selector: k8s-app: traefik-ingress-lb ports: - protocol: TCP port: 80 name: web - protocol: TCP port: 8080 name: admin - protocol: TCP port: 443 name: https type: NodePort --- apiVersion: v1 kind: Service metadata: name: traefik-web-ui namespace: kube-system spec: selector: k8s-app: traefik-ingress-lb ports: - port: 80 targetPort: 8080 --- apiVersion: extensions/v1beta1 kind: Ingress metadata: name: traefik-web-ui namespace: kube-system annotations: kubernetes.io/ingress.class: traefik spec: rules: - host: ingress.ziioffice.com http: paths: - backend: serviceName: traefik-web-ui servicePort: 80
3.3）部署及验证
[root@master01 kubernetes1.17.3]# kubectl apply -f traefik.yaml 验证 [root@master01 kubernetes1.17.3]# kubectl get pods -n kube-system|grep traefik traefik-ingress-controller-blpwk 1/1 Running 0 4m10s traefik-ingress-controller-v6nz8 1/1 Running 0 4m10s
3）安装metrics监控插件
3.1）准备metrics.yaml文件
apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRoleBinding metadata: name: metrics-server:system:auth-delegator labels: kubernetes.io/cluster-service: "true" addonmanager.kubernetes.io/mode: Reconcile 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: RoleBinding metadata: name: metrics-server-auth-reader namespace: kube-system labels: kubernetes.io/cluster-service: "true" addonmanager.kubernetes.io/mode: Reconcile roleRef: apiGroup: rbac.authorization.k8s.io kind: Role name: extension-apiserver-authentication-reader subjects: - kind: ServiceAccount name: metrics-server namespace: kube-system --- apiVersion: v1 kind: ServiceAccount metadata: name: metrics-server namespace: kube-system labels: kubernetes.io/cluster-service: "true" addonmanager.kubernetes.io/mode: Reconcile --- apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRole metadata: name: system:metrics-server labels: kubernetes.io/cluster-service: "true" addonmanager.kubernetes.io/mode: Reconcile rules: - apiGroups: - "" resources: - pods - nodes - nodes/stats - namespaces verbs: - get - list - watch - apiGroups: - "extensions" resources: - deployments verbs: - get - list - update - watch --- apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRoleBinding metadata: name: system:metrics-server labels: kubernetes.io/cluster-service: "true" addonmanager.kubernetes.io/mode: Reconcile roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: system:metrics-server subjects: - kind: ServiceAccount name: metrics-server namespace: kube-system --- apiVersion: v1 kind: ConfigMap metadata: name: metrics-server-config namespace: kube-system labels: kubernetes.io/cluster-service: "true" addonmanager.kubernetes.io/mode: EnsureExists data: NannyConfiguration: |- apiVersion: nannyconfig/v1alpha1 kind: NannyConfiguration --- apiVersion: apps/v1 kind: Deployment metadata: name: metrics-server namespace: kube-system labels: k8s-app: metrics-server kubernetes.io/cluster-service: "true" addonmanager.kubernetes.io/mode: Reconcile version: v0.3.1 spec: selector: matchLabels: k8s-app: metrics-server version: v0.3.1 template: metadata: name: metrics-server labels: k8s-app: metrics-server version: v0.3.1 annotations: scheduler.alpha.kubernetes.io/critical-pod: '' seccomp.security.alpha.kubernetes.io/pod: 'docker/default' spec: priorityClassName: system-cluster-critical serviceAccountName: metrics-server containers: - name: metrics-server image: k8s.gcr.io/metrics-server-amd64:v0.3.1 command: - /metrics-server - --metric-resolution=30s - --kubelet-preferred-address-types=InternalIP - --kubelet-insecure-tls ports: - containerPort: 443 name: https protocol: TCP - name: metrics-server-nanny image: k8s.gcr.io/addon-resizer:1.8.4 resources: limits: cpu: 100m memory: 300Mi requests: cpu: 5m memory: 50Mi env: - name: MY_POD_NAME valueFrom: fieldRef: fieldPath: metadata.name - name: MY_POD_NAMESPACE valueFrom: fieldRef: fieldPath: metadata.namespace volumeMounts: - name: metrics-server-config-volume mountPath: /etc/config command: - /pod_nanny - --config-dir=/etc/config - --cpu=300m - --extra-cpu=20m - --memory=200Mi - --extra-memory=10Mi - --threshold=5 - --deployment=metrics-server - --container=metrics-server - --poll-period=300000 - --estimator=exponential - --minClusterSize=2 volumes: - name: metrics-server-config-volume configMap: name: metrics-server-config tolerations: - key: "CriticalAddonsOnly" operator: "Exists" - key: node-role.kubernetes.io/master effect: NoSchedule --- apiVersion: v1 kind: Service metadata: name: metrics-server namespace: kube-system labels: addonmanager.kubernetes.io/mode: Reconcile kubernetes.io/cluster-service: "true" kubernetes.io/name: "Metrics-server" spec: selector: k8s-app: metrics-server ports: - port: 443 protocol: TCP targetPort: https --- apiVersion: apiregistration.k8s.io/v1beta1 kind: APIService metadata: name: v1beta1.metrics.k8s.io labels: kubernetes.io/cluster-service: "true" addonmanager.kubernetes.io/mode: Reconcile spec: service: name: metrics-server namespace: kube-system group: metrics.k8s.io version: v1beta1 insecureSkipTLSVerify: true groupPriorityMinimum: 100 versionPriority: 100
3.2）部署metrics并验证
kubectl apply -f metrics.yaml #查看 [root@master01 kubernetes1.17.3]# kubectl get pods -n kube-system|grep metri kube-state-metrics-77bf9cdd7f-km4wf 1/1 Running 0 14d metrics-server-5cf9669fbf-g2c52 2/2 Running 0 2m44s
[root@master01 kubernetes1.17.3]# kubectl top nodes NAME CPU(cores) CPU% MEMORY(bytes) MEMORY% master01.ziioffice.com 469m 11% 1997Mi 34% master02.ziioffice.com 374m 9% 1920Mi 32% master03.ziioffice.com 338m 8% 2099Mi 35% worker01.ziioffice.com 241m 6% 3203Mi 32% worker02.ziioffice.com 369m 9% 4499Mi 45% worker03.ziioffice.com 243m 6% 2828Mi 36% worker04.ziioffice.com 205m 5% 3328Mi 42% worker05.ziioffice.com 361m 4% 6586Mi 66% worker06.ziioffice.com 353m 4% 5907Mi 59% worker07.ziioffice.com 188m 4% 1535Mi 15% worker08.ziioffice.com 343m 8% 4134Mi 41%
[root@master01 kubernetes1.17.3]# kubectl top pods -n dev NAME CPU(cores) MEMORY(bytes) admin-server-869fb8cc6c-5pc59 8m 449Mi aoweb-7775c9c489-b4jcd 1m 56Mi aoweb-7775c9c489-lzssm 1m 39Mi cms-server-5f49b8b5cd-fjmk5 65m 687Mi cmsweb-6fb78765c-8p8r6 1m 56Mi config-server-5484bdcf65-f6mmh 21m 492Mi dsharepage-785889fb88-r5j6j 1m 38Mi dvr-78cd7f68bc-6dqf8 1m 60Mi es-server-ddf66f96f-r5vtb 2m 562Mi eureka-server-0 17m 454Mi gateway-server-0 35m 681Mi jobadmin-server-688dbc74cf-chfjd 21m 517Mi maxoffice-web-bj-f79fb996b-2hv2p 1m 163Mi maxoffice-web-sh-5dbb68b7-66bq2 1m 165Mi middle-server-7458bcd49c-4jm7c 67m 729Mi operation-server-6966b8c567-q6q9k 59m 764Mi txmanager-server-0 21m 550Mi