Kubernetes 1.13.4 搭建

年后回来有点懒,也有点忙;1.13 出来好久了,周末还是决定折腾一下吧

一、环境准备

老样子,安装环境为 5 台 Ubuntu 18.04.2 LTS 虚拟机,其他详细信息如下

System OSIP AddressDockerKernelApplication
Ubuntu 18.04.2 LTS192.168.1.5118.09.24.15.0-46-generick8s-master、etcd
Ubuntu 18.04.2 LTS192.168.1.5218.09.24.15.0-46-generick8s-master、etcd
Ubuntu 18.04.2 LTS192.168.1.5318.09.24.15.0-46-generick8s-master、etcd
Ubuntu 18.04.2 LTS192.168.1.5418.09.24.15.0-46-generick8s-node
Ubuntu 18.04.2 LTS192.168.1.5518.09.24.15.0-46-generick8s-node

所有配置生成将在第一个节点上完成,第一个节点与其他节点 root 用户免密码登录,用于分发文件;为了方便搭建弄了一点小脚本,仓库地址 ktool,本文后续所有脚本、配置都可以在此仓库找到;关于 cfssl 等基本工具使用,本文不再阐述

二、安装 Etcd

2.1、生成证书

Etcd 仍然开启 TLS 认证,所以先使用 cfssl 生成相关证书

  • etcd-root-ca-csr.json
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
{
"CN": "etcd-root-ca",
"key": {
"algo": "rsa",
"size": 4096
},
"names": [
{
"O": "etcd",
"OU": "etcd Security",
"L": "Beijing",
"ST": "Beijing",
"C": "CN"
}
],
"ca": {
"expiry": "87600h"
}
}
  • etcd-gencert.json
1
2
3
4
5
6
7
8
9
10
11
12
13
{
"signing": {
"default": {
"usages": [
"signing",
"key encipherment",
"server auth",
"client auth"
],
"expiry": "87600h"
}
}
}
  • etcd-csr.json
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
{
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"O": "etcd",
"OU": "etcd Security",
"L": "Beijing",
"ST": "Beijing",
"C": "CN"
}
],
"CN": "etcd",
"hosts": [
"127.0.0.1",
"localhost",
"192.168.1.51",
"192.168.1.52",
"192.168.1.53"
]
}

接下来执行生成即可;我建议在生产环境在证书内预留几个 IP,已防止意外故障迁移时还需要重新生成证书;证书默认期限为 10 年(包括 CA 证书),有需要加强安全性的可以适当减小

1
2
cfssl gencert --initca=true etcd-root-ca-csr.json | cfssljson --bare etcd-root-ca
cfssl gencert --ca etcd-root-ca.pem --ca-key etcd-root-ca-key.pem --config etcd-gencert.json etcd-csr.json | cfssljson --bare etcd

2.2、安装 Etcd

2.2.1、安装脚本

安装 Etcd 只需要将二进制文件放在可执行目录下,然后修改配置增加 systemd service 配置文件即可;为了安全性起见最好使用单独的用户启动 Etcd

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
#!/bin/bash

set -e

ETCD_DEFAULT_VERSION="3.3.12"

if [ "$1" != "" ]; then
ETCD_VERSION=$1
else
echo -e "\033[33mWARNING: ETCD_VERSION is blank,use default version: ${ETCD_DEFAULT_VERSION}\033[0m"
ETCD_VERSION=${ETCD_DEFAULT_VERSION}
fi

# 下载 Etcd 二进制文件
function download(){
if [ ! -f "etcd-v${ETCD_VERSION}-linux-amd64.tar.gz" ]; then
wget https://github.com/coreos/etcd/releases/download/v${ETCD_VERSION}/etcd-v${ETCD_VERSION}-linux-amd64.tar.gz
tar -zxvf etcd-v${ETCD_VERSION}-linux-amd64.tar.gz
fi
}

# 为 Etcd 创建单独的用户
function preinstall(){
getent group etcd >/dev/null || groupadd -r etcd
getent passwd etcd >/dev/null || useradd -r -g etcd -d /var/lib/etcd -s /sbin/nologin -c "etcd user" etcd
}

# 安装(复制文件)
function install(){

# 释放 Etcd 二进制文件
echo -e "\033[32mINFO: Copy etcd...\033[0m"
tar -zxvf etcd-v${ETCD_VERSION}-linux-amd64.tar.gz
cp etcd-v${ETCD_VERSION}-linux-amd64/etcd* /usr/local/bin
rm -rf etcd-v${ETCD_VERSION}-linux-amd64

# 复制 配置文件 到 /etc/etcd(目录内文件结构在下面)
echo -e "\033[32mINFO: Copy etcd config...\033[0m"
cp -r conf /etc/etcd
chown -R etcd:etcd /etc/etcd
chmod -R 755 /etc/etcd/ssl

# 复制 systemd service 配置
echo -e "\033[32mINFO: Copy etcd systemd config...\033[0m"
cp systemd/*.service /lib/systemd/system
systemctl daemon-reload
}

# 创建 Etcd 存储目录(如需要更改,请求改 /etc/etcd/etcd.conf 配置文件)
function postinstall(){
if [ ! -d "/var/lib/etcd" ]; then
mkdir /var/lib/etcd
chown -R etcd:etcd /var/lib/etcd
fi

}

# 依次执行
download
preinstall
install
postinstall

2.2.2、配置文件

关于配置文件目录结构如下(请自行复制证书)

1
2
3
4
5
6
7
8
9
10
11
conf
├── etcd.conf
├── etcd.conf.cluster.example
├── etcd.conf.single.example
└── ssl
├── etcd-key.pem
├── etcd.pem
├── etcd-root-ca-key.pem
└── etcd-root-ca.pem

1 directory, 7 files
  • etcd.conf
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
# [member]
ETCD_NAME=etcd1
ETCD_DATA_DIR="/var/lib/etcd/data"
ETCD_WAL_DIR="/var/lib/etcd/wal"
ETCD_SNAPSHOT_COUNT="100"
ETCD_HEARTBEAT_INTERVAL="100"
ETCD_ELECTION_TIMEOUT="1000"
ETCD_LISTEN_PEER_URLS="https://192.168.1.51:2380"
ETCD_LISTEN_CLIENT_URLS="https://192.168.1.51:2379,http://127.0.0.1:2379"
ETCD_MAX_SNAPSHOTS="5"
ETCD_MAX_WALS="5"
#ETCD_CORS=""

# [cluster]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://192.168.1.51:2380"
# if you use different ETCD_NAME (e.g. test), set ETCD_INITIAL_CLUSTER value for this name, i.e. "test=http://..."
ETCD_INITIAL_CLUSTER="etcd1=https://192.168.1.51:2380,etcd2=https://192.168.1.52:2380,etcd3=https://192.168.1.53:2380"
ETCD_INITIAL_CLUSTER_STATE="new"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_ADVERTISE_CLIENT_URLS="https://192.168.1.51:2379"
#ETCD_DISCOVERY=""
#ETCD_DISCOVERY_SRV=""
#ETCD_DISCOVERY_FALLBACK="proxy"
#ETCD_DISCOVERY_PROXY=""
#ETCD_STRICT_RECONFIG_CHECK="false"
#ETCD_AUTO_COMPACTION_RETENTION="0"

# [proxy]
#ETCD_PROXY="off"
#ETCD_PROXY_FAILURE_WAIT="5000"
#ETCD_PROXY_REFRESH_INTERVAL="30000"
#ETCD_PROXY_DIAL_TIMEOUT="1000"
#ETCD_PROXY_WRITE_TIMEOUT="5000"
#ETCD_PROXY_READ_TIMEOUT="0"

# [security]
ETCD_CERT_FILE="/etc/etcd/ssl/etcd.pem"
ETCD_KEY_FILE="/etc/etcd/ssl/etcd-key.pem"
ETCD_CLIENT_CERT_AUTH="true"
ETCD_TRUSTED_CA_FILE="/etc/etcd/ssl/etcd-root-ca.pem"
ETCD_AUTO_TLS="true"
ETCD_PEER_CERT_FILE="/etc/etcd/ssl/etcd.pem"
ETCD_PEER_KEY_FILE="/etc/etcd/ssl/etcd-key.pem"
ETCD_PEER_CLIENT_CERT_AUTH="true"
ETCD_PEER_TRUSTED_CA_FILE="/etc/etcd/ssl/etcd-root-ca.pem"
ETCD_PEER_AUTO_TLS="true"

# [logging]
#ETCD_DEBUG="false"
# examples for -log-package-levels etcdserver=WARNING,security=DEBUG
#ETCD_LOG_PACKAGE_LEVELS=""
  • etcd.service
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
[Unit]
Description=Etcd Server
After=network.target
After=network-online.target
Wants=network-online.target

[Service]
Type=notify
WorkingDirectory=/var/lib/etcd/
EnvironmentFile=-/etc/etcd/etcd.conf
User=etcd
# set GOMAXPROCS to number of processors
ExecStart=/bin/bash -c "GOMAXPROCS=$(nproc) /usr/local/bin/etcd --name=\"${ETCD_NAME}\" --data-dir=\"${ETCD_DATA_DIR}\" --listen-client-urls=\"${ETCD_LISTEN_CLIENT_URLS}\""
Restart=on-failure
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target

最后三台机器依次修改 IPETCD_NAME 然后启动即可,**生产环境请不要忘记修改集群 Token 为真实随机字符串 (ETCD_INITIAL_CLUSTER_TOKEN 变量)**启动后可以通过以下命令测试集群联通性

1
2
3
4
5
docker1.node ➜  ~ export ETCDCTL_API=3
docker1.node ➜ ~ etcdctl member list
238b72cdd26e304f, started, etcd2, https://192.168.1.52:2380, https://192.168.1.52:2379
8034142cf01c5d1c, started, etcd3, https://192.168.1.53:2380, https://192.168.1.53:2379
8da171dbef9ded69, started, etcd1, https://192.168.1.51:2380, https://192.168.1.51:2379

三、安装 Kubernetes

3.1、生成证书及配置

3.1.1、生成证书

新版本已经越来越趋近全面 TLS + RBAC 配置,所以本次安装将会启动大部分 TLS + RBAC 配置,包括 kube-controler-managerkube-scheduler 组件不再连接本地 kube-apiserver 的 8080 非认证端口,kubelet 等组件 API 端点关闭匿名访问,启动 RBAC 认证等;为了满足这些认证,需要签署以下证书

  • k8s-root-ca-csr.json 集群 CA 根证书
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
{
"CN": "kubernetes",
"key": {
"algo": "rsa",
"size": 4096
},
"names": [
{
"C": "CN",
"ST": "BeiJing",
"L": "BeiJing",
"O": "kubernetes",
"OU": "System"
}
],
"ca": {
"expiry": "87600h"
}
}
  • k8s-gencert.json 用于生成其他证书的标准配置
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
{
"signing": {
"default": {
"expiry": "87600h"
},
"profiles": {
"kubernetes": {
"usages": [
"signing",
"key encipherment",
"server auth",
"client auth"
],
"expiry": "87600h"
}
}
}
}
  • kube-apiserver-csr.json apiserver TLS 认证端口需要的证书
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
{
"CN": "kubernetes",
"hosts": [
"127.0.0.1",
"10.254.0.1",
"localhost",
"*.master.kubernetes.node",
"kubernetes",
"kubernetes.default",
"kubernetes.default.svc",
"kubernetes.default.svc.cluster",
"kubernetes.default.svc.cluster.local"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "BeiJing",
"L": "BeiJing",
"O": "kubernetes",
"OU": "System"
}
]
}
  • kube-controller-manager-csr.json controller manager 连接 apiserver 需要使用的证书,同时本身 10257 端口也会使用此证书
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
{
"CN": "system:kube-controller-manager",
"hosts": [
"127.0.0.1",
"localhost",
"*.master.kubernetes.node"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "BeiJing",
"L": "BeiJing",
"O": "system:kube-controller-manager",
"OU": "System"
}
]
}
  • kube-scheduler-csr.json scheduler 连接 apiserver 需要使用的证书,同时本身 10259 端口也会使用此证书
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
{
"CN": "system:kube-scheduler",
"hosts": [
"127.0.0.1",
"localhost",
"*.master.kubernetes.node"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "BeiJing",
"L": "BeiJing",
"O": "system:kube-scheduler",
"OU": "System"
}
]
}
  • kube-proxy-csr.json proxy 组件连接 apiserver 需要使用的证书
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
{
"CN": "system:kube-proxy",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "BeiJing",
"L": "BeiJing",
"O": "system:kube-proxy",
"OU": "System"
}
]
}
  • kubelet-api-admin-csr.json apiserver 反向连接 kubelet 组件 10250 端口需要使用的证书(例如执行 kubectl logs)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
{
"CN": "system:kubelet-api-admin",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "BeiJing",
"L": "BeiJing",
"O": "system:kubelet-api-admin",
"OU": "System"
}
]
}
  • admin-csr.json 集群管理员(kubectl)连接 apiserver 需要使用的证书
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
{
"CN": "system:masters",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "BeiJing",
"L": "BeiJing",
"O": "system:masters",
"OU": "System"
}
]
}

注意: 请不要修改证书配置的 CNO 字段,这两个字段名称比较特殊,大多数为 system: 开头,实际上是为了匹配 RBAC 规则,具体请参考 Default Roles and Role Bindings

最后使用如下命令生成即可:

1
2
3
4
5
6
cfssl gencert --initca=true k8s-root-ca-csr.json | cfssljson --bare k8s-root-ca

for targetName in kube-apiserver kube-controller-manager kube-scheduler kube-proxy kubelet-api-admin admin; do
cfssl gencert --ca k8s-root-ca.pem --ca-key k8s-root-ca-key.pem --config k8s-gencert.json --profile kubernetes $targetName-csr.json | cfssljson --
bare $targetName
done

3.1.2、生成配置文件

集群搭建需要预先生成一系列配置文件,生成配置需要预先安装 kubectl 命令,请自行根据文档安装 Install kubectl binary using curl;其中配置文件及其作用如下:

  • bootstrap.kubeconfig kubelet TLS Bootstarp 引导阶段需要使用的配置文件
  • kube-controller-manager.kubeconfig controller manager 组件开启安全端口及 RBAC 认证所需配置
  • kube-scheduler.kubeconfig scheduler 组件开启安全端口及 RBAC 认证所需配置
  • kube-proxy.kubeconfig proxy 组件连接 apiserver 所需配置文件
  • audit-policy.yaml apiserver RBAC 审计日志配置文件
  • bootstrap.secret.yaml kubelet TLS Bootstarp 引导阶段使用 Bootstrap Token 方式引导,需要预先创建此 Token

生成这些配置文件的脚本如下

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
# 指定 apiserver 地址
KUBE_APISERVER="https://127.0.0.1:6443"

# 生成 Bootstrap Token
BOOTSTRAP_TOKEN_ID=$(head -c 6 /dev/urandom | md5sum | head -c 6)
BOOTSTRAP_TOKEN_SECRET=$(head -c 16 /dev/urandom | md5sum | head -c 16)
BOOTSTRAP_TOKEN="${BOOTSTRAP_TOKEN_ID}.${BOOTSTRAP_TOKEN_SECRET}"
echo "Bootstrap Tokne: ${BOOTSTRAP_TOKEN}"

# 生成 kubelet tls bootstrap 配置
echo "Create kubelet bootstrapping kubeconfig..."
kubectl config set-cluster kubernetes \
--certificate-authority=k8s-root-ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=bootstrap.kubeconfig
kubectl config set-credentials "system:bootstrap:${BOOTSTRAP_TOKEN_ID}" \
--token=${BOOTSTRAP_TOKEN} \
--kubeconfig=bootstrap.kubeconfig
kubectl config set-context default \
--cluster=kubernetes \
--user="system:bootstrap:${BOOTSTRAP_TOKEN_ID}" \
--kubeconfig=bootstrap.kubeconfig
kubectl config use-context default --kubeconfig=bootstrap.kubeconfig

# 生成 kube-controller-manager 配置文件
echo "Create kube-controller-manager kubeconfig..."
kubectl config set-cluster kubernetes \
--certificate-authority=k8s-root-ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=kube-controller-manager.kubeconfig
kubectl config set-credentials "system:kube-controller-manager" \
--client-certificate=kube-controller-manager.pem \
--client-key=kube-controller-manager-key.pem \
--embed-certs=true \
--kubeconfig=kube-controller-manager.kubeconfig
kubectl config set-context default \
--cluster=kubernetes \
--user=system:kube-controller-manager \
--kubeconfig=kube-controller-manager.kubeconfig
kubectl config use-context default --kubeconfig=kube-controller-manager.kubeconfig

# 生成 kube-scheduler 配置文件
echo "Create kube-scheduler kubeconfig..."
kubectl config set-cluster kubernetes \
--certificate-authority=k8s-root-ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=kube-scheduler.kubeconfig
kubectl config set-credentials "system:kube-scheduler" \
--client-certificate=kube-scheduler.pem \
--client-key=kube-scheduler-key.pem \
--embed-certs=true \
--kubeconfig=kube-scheduler.kubeconfig
kubectl config set-context default \
--cluster=kubernetes \
--user=system:kube-scheduler \
--kubeconfig=kube-scheduler.kubeconfig
kubectl config use-context default --kubeconfig=kube-scheduler.kubeconfig

# 生成 kube-proxy 配置文件
echo "Create kube-proxy kubeconfig..."
kubectl config set-cluster kubernetes \
--certificate-authority=k8s-root-ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=kube-proxy.kubeconfig
kubectl config set-credentials "system:kube-proxy" \
--client-certificate=kube-proxy.pem \
--client-key=kube-proxy-key.pem \
--embed-certs=true \
--kubeconfig=kube-proxy.kubeconfig
kubectl config set-context default \
--cluster=kubernetes \
--user=system:kube-proxy \
--kubeconfig=kube-proxy.kubeconfig
kubectl config use-context default --kubeconfig=kube-proxy.kubeconfig

# 生成 apiserver RBAC 审计配置文件
cat >> audit-policy.yaml <<EOF
# Log all requests at the Metadata level.
apiVersion: audit.k8s.io/v1
kind: Policy
rules:
- level: Metadata
EOF

# 生成 tls bootstrap token secret 配置文件
cat >> bootstrap.secret.yaml <<EOF
apiVersion: v1
kind: Secret
metadata:
# Name MUST be of form "bootstrap-token-<token id>"
name: bootstrap-token-${BOOTSTRAP_TOKEN_ID}
namespace: kube-system
# Type MUST be 'bootstrap.kubernetes.io/token'
type: bootstrap.kubernetes.io/token
stringData:
# Human readable description. Optional.
description: "The default bootstrap token."
# Token ID and secret. Required.
token-id: ${BOOTSTRAP_TOKEN_ID}
token-secret: ${BOOTSTRAP_TOKEN_SECRET}
# Expiration. Optional.
expiration: $(date -d'+2 day' -u +"%Y-%m-%dT%H:%M:%SZ")
# Allowed usages.
usage-bootstrap-authentication: "true"
usage-bootstrap-signing: "true"
# Extra groups to authenticate the token as. Must start with "system:bootstrappers:"
# auth-extra-groups: system:bootstrappers:worker,system:bootstrappers:ingress
EOF

3.2、处理 ipvs 及依赖

新版本目前 kube-proxy 组件全部采用 ipvs 方式负载,所以为了 kube-proxy 能正常工作需要预先处理一下 ipvs 配置以及相关依赖(每台 node 都要处理)

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
cat >> /etc/sysctl.conf <<EOF
net.ipv4.ip_forward=1
net.bridge.bridge-nf-call-iptables=1
net.bridge.bridge-nf-call-ip6tables=1
EOF

sysctl -p

cat >> /etc/modules <<EOF
ip_vs
ip_vs_lc
ip_vs_wlc
ip_vs_rr
ip_vs_wrr
ip_vs_lblc
ip_vs_lblcr
ip_vs_dh
ip_vs_sh
ip_vs_fo
ip_vs_nq
ip_vs_sed
ip_vs_ftp
EOF

apt install -y conntrack ipvsadm

3.3、部署 Master

3.3.1、安装脚本

master 节点上需要三个组件: kube-apiserverkube-controller-managerkube-scheduler

安装流程整体为以下几步

  • 创建单独的 kube 用户
  • 复制相关二进制文件到 /usr/bin,可以采用 all in onehyperkube
  • 复制配置文件到 /etc/kubernetes
  • 复制证书文件到 /etc/kubernetes/ssl
  • 修改配置并启动

安装脚本如下所示:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
KUBE_DEFAULT_VERSION="1.13.4"

if [ "$1" != "" ]; then
KUBE_VERSION=$1
else
echo -e "\033[33mWARNING: KUBE_VERSION is blank,use default version: ${KUBE_DEFAULT_VERSION}\033[0m"
KUBE_VERSION=${KUBE_DEFAULT_VERSION}
fi

# 下载 hyperkube
function download_k8s(){
if [ ! -f "hyperkube_v${KUBE_VERSION}" ]; then
wget https://storage.googleapis.com/kubernetes-release/release/v${KUBE_VERSION}/bin/linux/amd64/hyperkube -O hyperkube_v${KUBE_VERSION}
chmod +x hyperkube_v${KUBE_VERSION}
fi
}

# 创建专用用户 kube
function preinstall(){
getent group kube >/dev/null || groupadd -r kube
getent passwd kube >/dev/null || useradd -r -g kube -d / -s /sbin/nologin -c "Kubernetes user" kube
}

# 复制可执行文件和配置以及证书
function install_k8s(){
echo -e "\033[32mINFO: Copy hyperkube...\033[0m"
cp hyperkube_v${KUBE_VERSION} /usr/bin/hyperkube

echo -e "\033[32mINFO: Create symbolic link...\033[0m"
(cd /usr/bin && hyperkube --make-symlinks)

echo -e "\033[32mINFO: Copy kubernetes config...\033[0m"
cp -r conf /etc/kubernetes
if [ -d "/etc/kubernetes/ssl" ]; then
chown -R kube:kube /etc/kubernetes/ssl
fi

echo -e "\033[32mINFO: Copy kubernetes systemd config...\033[0m"
cp systemd/*.service /lib/systemd/system
systemctl daemon-reload
}

# 创建必要的目录并修改权限
function postinstall(){
if [ ! -d "/var/log/kube-audit" ]; then
mkdir /var/log/kube-audit
fi

if [ ! -d "/var/lib/kubelet" ]; then
mkdir /var/lib/kubelet
fi
if [ ! -d "/usr/libexec" ]; then
mkdir /usr/libexec
fi
chown -R kube:kube /etc/kubernetes /var/log/kube-audit /var/lib/kubelet /usr/libexec
}

# 执行
download_k8s
preinstall
install_k8s
postinstall

hyperkube 是一个多合一的可执行文件,通过 --make-symlinks 会在当前目录生成 kubernetes 各个组件的软连接

被复制的 conf 目录结构如下(最终被复制到 /etc/kubernetes)

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
.
├── apiserver
├── audit-policy.yaml
├── bootstrap.kubeconfig
├── bootstrap.secret.yaml
├── controller-manager
├── kube-controller-manager.kubeconfig
├── kubelet
├── kube-proxy.kubeconfig
├── kube-scheduler.kubeconfig
├── proxy
├── scheduler
└── ssl
├── admin-key.pem
├── admin.pem
├── k8s-root-ca-key.pem
├── k8s-root-ca.pem
├── kube-apiserver-key.pem
├── kube-apiserver.pem
├── kube-controller-manager-key.pem
├── kube-controller-manager.pem
├── kubelet-api-admin-key.pem
├── kubelet-api-admin.pem
├── kube-proxy-key.pem
├── kube-proxy.pem
├── kube-scheduler-key.pem
└── kube-scheduler.pem

1 directory, 25 files

3.3.2、配置文件

以下为相关配置文件内容

systemd 配置如下

  • kube-apiserver.service
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/GoogleCloudPlatform/kubernetes
After=network.target
After=etcd.service

[Service]
EnvironmentFile=-/etc/kubernetes/apiserver
User=kube
ExecStart=/usr/bin/kube-apiserver \
$KUBE_LOGTOSTDERR \
$KUBE_LOG_LEVEL \
$KUBE_ETCD_SERVERS \
$KUBE_API_ADDRESS \
$KUBE_API_PORT \
$KUBELET_PORT \
$KUBE_ALLOW_PRIV \
$KUBE_SERVICE_ADDRESSES \
$KUBE_ADMISSION_CONTROL \
$KUBE_API_ARGS
Restart=on-failure
Type=notify
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target
  • kube-controller-manager.service
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
[Unit]
Description=Kubernetes Controller Manager
Documentation=https://github.com/GoogleCloudPlatform/kubernetes

[Service]
EnvironmentFile=-/etc/kubernetes/controller-manager
User=kube
ExecStart=/usr/bin/kube-controller-manager \
$KUBE_LOGTOSTDERR \
$KUBE_LOG_LEVEL \
$KUBE_MASTER \
$KUBE_CONTROLLER_MANAGER_ARGS
Restart=on-failure
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target
  • kube-scheduler.service
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
[Unit]
Description=Kubernetes Scheduler Plugin
Documentation=https://github.com/GoogleCloudPlatform/kubernetes

[Service]
EnvironmentFile=-/etc/kubernetes/scheduler
User=kube
ExecStart=/usr/bin/kube-scheduler \
$KUBE_LOGTOSTDERR \
$KUBE_LOG_LEVEL \
$KUBE_MASTER \
$KUBE_SCHEDULER_ARGS
Restart=on-failure
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target

核心配置文件

  • apiserver
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
###
# kubernetes system config
#
# The following values are used to configure the kube-apiserver
#

# The address on the local server to listen to.
KUBE_API_ADDRESS="--advertise-address=192.168.1.51 --bind-address=0.0.0.0"

# The port on the local server to listen on.
KUBE_API_PORT="--secure-port=6443"

# Port minions listen on
# KUBELET_PORT="--kubelet-port=10250"

# Comma separated list of nodes in the etcd cluster
KUBE_ETCD_SERVERS="--etcd-servers=https://192.168.1.51:2379,https://192.168.1.52:2379,https://192.168.1.53:2379"

# Address range to use for services
KUBE_SERVICE_ADDRESSES="--service-cluster-ip-range=10.254.0.0/16"

# default admission control policies
KUBE_ADMISSION_CONTROL="--enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,MutatingAdmissionWebhook,ValidatingAdmissionWebhook,Priority,ResourceQuota"

# Add your own!
KUBE_API_ARGS=" --allow-privileged=true \
--anonymous-auth=false \
--alsologtostderr \
--apiserver-count=3 \
--audit-log-maxage=30 \
--audit-log-maxbackup=3 \
--audit-log-maxsize=100 \
--audit-log-path=/var/log/kube-audit/audit.log \
--audit-policy-file=/etc/kubernetes/audit-policy.yaml \
--authorization-mode=Node,RBAC \
--client-ca-file=/etc/kubernetes/ssl/k8s-root-ca.pem \
--enable-bootstrap-token-auth \
--enable-garbage-collector \
--enable-logs-handler \
--endpoint-reconciler-type=lease \
--etcd-cafile=/etc/etcd/ssl/etcd-root-ca.pem \
--etcd-certfile=/etc/etcd/ssl/etcd.pem \
--etcd-keyfile=/etc/etcd/ssl/etcd-key.pem \
--etcd-compaction-interval=0s \
--event-ttl=168h0m0s \
--kubelet-https=true \
--kubelet-certificate-authority=/etc/kubernetes/ssl/k8s-root-ca.pem \
--kubelet-client-certificate=/etc/kubernetes/ssl/kubelet-api-admin.pem \
--kubelet-client-key=/etc/kubernetes/ssl/kubelet-api-admin-key.pem \
--kubelet-timeout=3s \
--runtime-config=api/all=true \
--service-node-port-range=30000-50000 \
--service-account-key-file=/etc/kubernetes/ssl/k8s-root-ca.pem \
--tls-cert-file=/etc/kubernetes/ssl/kube-apiserver.pem \
--tls-private-key-file=/etc/kubernetes/ssl/kube-apiserver-key.pem \
--v=2"

配置解释:

选项作用
--client-ca-file定义客户端 CA
--endpoint-reconciler-typemaster endpoint 策略
--kubelet-client-certificate--kubelet-client-keymaster 反向连接 kubelet 使用的证书
--service-account-key-fileservice account 签名 key(用于有效性验证)
--tls-cert-file--tls-private-key-filemaster apiserver 6443 端口证书
  • controller-manager
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
###
# The following values are used to configure the kubernetes controller-manager

# defaults from config and apiserver should be adequate

# Add your own!
KUBE_CONTROLLER_MANAGER_ARGS=" --address=127.0.0.1 \
--authentication-kubeconfig=/etc/kubernetes/kube-controller-manager.kubeconfig \
--authorization-kubeconfig=/etc/kubernetes/kube-controller-manager.kubeconfig \
--bind-address=0.0.0.0 \
--cluster-name=kubernetes \
--cluster-signing-cert-file=/etc/kubernetes/ssl/k8s-root-ca.pem \
--cluster-signing-key-file=/etc/kubernetes/ssl/k8s-root-ca-key.pem \
--client-ca-file=/etc/kubernetes/ssl/k8s-root-ca.pem \
--controllers=*,bootstrapsigner,tokencleaner \
--deployment-controller-sync-period=10s \
--experimental-cluster-signing-duration=87600h0m0s \
--enable-garbage-collector=true \
--kubeconfig=/etc/kubernetes/kube-controller-manager.kubeconfig \
--leader-elect=true \
--node-monitor-grace-period=20s \
--node-monitor-period=5s \
--port=10252 \
--pod-eviction-timeout=2m0s \
--requestheader-client-ca-file=/etc/kubernetes/ssl/k8s-root-ca.pem \
--terminated-pod-gc-threshold=50 \
--tls-cert-file=/etc/kubernetes/ssl/kube-controller-manager.pem \
--tls-private-key-file=/etc/kubernetes/ssl/kube-controller-manager-key.pem \
--root-ca-file=/etc/kubernetes/ssl/k8s-root-ca.pem \
--secure-port=10257 \
--service-cluster-ip-range=10.254.0.0/16 \
--service-account-private-key-file=/etc/kubernetes/ssl/k8s-root-ca-key.pem \
--use-service-account-credentials=true \
--v=2"

controller manager 将不安全端口 10252 绑定到 127.0.0.1 确保 kuebctl get cs 有正确返回;将安全端口 10257 绑定到 0.0.0.0 公开,提供服务调用;由于 controller manager 开始连接 apiserver 的 6443 认证端口,所以需要 --use-service-account-credentials 选项来让 controller manager 创建单独的 service account(默认 system:kube-controller-manager 用户没有那么高权限)

  • scheduler
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
###
# kubernetes scheduler config

# default config should be adequate

# Add your own!
KUBE_SCHEDULER_ARGS=" --address=127.0.0.1 \
--authentication-kubeconfig=/etc/kubernetes/kube-scheduler.kubeconfig \
--authorization-kubeconfig=/etc/kubernetes/kube-scheduler.kubeconfig \
--bind-address=0.0.0.0 \
--client-ca-file=/etc/kubernetes/ssl/k8s-root-ca.pem \
--kubeconfig=/etc/kubernetes/kube-scheduler.kubeconfig \
--requestheader-client-ca-file=/etc/kubernetes/ssl/k8s-root-ca.pem \
--secure-port=10259 \
--leader-elect=true \
--port=10251 \
--tls-cert-file=/etc/kubernetes/ssl/kube-scheduler.pem \
--tls-private-key-file=/etc/kubernetes/ssl/kube-scheduler-key.pem \
--v=2"

shceduler 同 controller manager 一样将不安全端口绑定在本地,安全端口对外公开

最后在三台节点上调整一下 IP 配置,启动即可

3.4、部署 Node

3.4.1、安装脚本

node 安装与 master 安装过程一致,这里不再阐述

3.4.2、配置文件

systemd 配置文件

  • kubelet.service
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
[Unit]
Description=Kubernetes Kubelet Server
Documentation=https://github.com/GoogleCloudPlatform/kubernetes
After=docker.service
Requires=docker.service

[Service]
WorkingDirectory=/var/lib/kubelet
EnvironmentFile=-/etc/kubernetes/kubelet
ExecStart=/usr/bin/kubelet \
$KUBE_LOGTOSTDERR \
$KUBE_LOG_LEVEL \
$KUBELET_API_SERVER \
$KUBELET_ADDRESS \
$KUBELET_PORT \
$KUBELET_HOSTNAME \
$KUBE_ALLOW_PRIV \
$KUBELET_ARGS
Restart=on-failure
KillMode=process

[Install]
WantedBy=multi-user.target
  • kube-proxy.service
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
[Unit]
Description=Kubernetes Kube-Proxy Server
Documentation=https://github.com/GoogleCloudPlatform/kubernetes
After=network.target

[Service]
EnvironmentFile=-/etc/kubernetes/proxy
ExecStart=/usr/bin/kube-proxy \
$KUBE_LOGTOSTDERR \
$KUBE_LOG_LEVEL \
$KUBE_MASTER \
$KUBE_PROXY_ARGS
Restart=on-failure
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target

核心配置文件

  • kubelet
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
###
# kubernetes kubelet (minion) config

# The address for the info server to serve on (set to 0.0.0.0 or "" for all interfaces)
KUBELET_ADDRESS="--node-ip=192.168.1.54"

# The port for the info server to serve on
# KUBELET_PORT="--port=10250"

# You may leave this blank to use the actual hostname
KUBELET_HOSTNAME="--hostname-override=docker4.node"

# location of the api-server
# KUBELET_API_SERVER=""

# Add your own!
KUBELET_ARGS=" --address=0.0.0.0 \
--allow-privileged \
--anonymous-auth=false \
--authorization-mode=Webhook \
--bootstrap-kubeconfig=/etc/kubernetes/bootstrap.kubeconfig \
--client-ca-file=/etc/kubernetes/ssl/k8s-root-ca.pem \
--network-plugin=cni \
--cgroup-driver=cgroupfs \
--cert-dir=/etc/kubernetes/ssl \
--cluster-dns=10.254.0.2 \
--cluster-domain=cluster.local \
--cni-conf-dir=/etc/cni/net.d \
--eviction-soft=imagefs.available<15%,memory.available<512Mi,nodefs.available<15%,nodefs.inodesFree<10% \
--eviction-soft-grace-period=imagefs.available=3m,memory.available=1m,nodefs.available=3m,nodefs.inodesFree=1m \
--eviction-hard=imagefs.available<10%,memory.available<256Mi,nodefs.available<10%,nodefs.inodesFree<5% \
--eviction-max-pod-grace-period=30 \
--image-gc-high-threshold=80 \
--image-gc-low-threshold=70 \
--image-pull-progress-deadline=30s \
--kube-reserved=cpu=500m,memory=512Mi,ephemeral-storage=1Gi \
--kubeconfig=/etc/kubernetes/kubelet.kubeconfig \
--max-pods=100 \
--minimum-image-ttl-duration=720h0m0s \
--node-labels=node.kubernetes.io/k8s-node=true \
--pod-infra-container-image=gcr.azk8s.cn/google_containers/pause-amd64:3.1 \
--port=10250 \
--read-only-port=0 \
--rotate-certificates \
--rotate-server-certificates \
--resolv-conf=/run/systemd/resolve/resolv.conf \
--system-reserved=cpu=500m,memory=512Mi,ephemeral-storage=1Gi \
--fail-swap-on=false \
--v=2"

当 kubelet 组件设置了 --rotate-certificates--rotate-server-certificates 后会自动更新其使用的相关证书,同时指定 --authorization-mode=Webhook10250 端口 RBAC 授权将会委托给 apiserver

  • proxy
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
###
# kubernetes proxy config
# default config should be adequate
# Add your own!
KUBE_PROXY_ARGS=" --bind-address=0.0.0.0 \
--cleanup-ipvs=true \
--cluster-cidr=10.254.0.0/16 \
--hostname-override=docker4.node \
--healthz-bind-address=0.0.0.0 \
--healthz-port=10256 \
--masquerade-all=true \
--proxy-mode=ipvs \
--ipvs-min-sync-period=5s \
--ipvs-sync-period=5s \
--ipvs-scheduler=wrr \
--kubeconfig=/etc/kubernetes/kube-proxy.kubeconfig \
--logtostderr=true \
--v=2"

由于 kubelet 组件是采用 TLS Bootstrap 启动,所以需要预先创建相关配置

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
# 创建用于 tls bootstrap 的 token secret
kubectl create -f bootstrap.secret.yaml

# 为了能让 kubelet 实现自动更新证书,需要配置相关 clusterrolebinding

# 允许 kubelet tls bootstrap 创建 csr 请求
kubectl create clusterrolebinding create-csrs-for-bootstrapping \
--clusterrole=system:node-bootstrapper \
--group=system:bootstrappers

# 自动批准 system:bootstrappers 组用户 TLS bootstrapping 首次申请证书的 CSR 请求
kubectl create clusterrolebinding auto-approve-csrs-for-group \
--clusterrole=system:certificates.k8s.io:certificatesigningrequests:nodeclient \
--group=system:bootstrappers

# 自动批准 system:nodes 组用户更新 kubelet 自身与 apiserver 通讯证书的 CSR 请求
kubectl create clusterrolebinding auto-approve-renewals-for-nodes \
--clusterrole=system:certificates.k8s.io:certificatesigningrequests:selfnodeclient \
--group=system:nodes

# 在 kubelet server 开启 api 认证的情况下,apiserver 反向访问 kubelet 10250 需要此授权(eg: kubectl logs)
kubectl create clusterrolebinding system:kubelet-api-admin \
--clusterrole=system:kubelet-api-admin \
--user=system:kubelet-api-admin

3.4.3、Nginx 代理

为了保证 apiserver 的 HA,需要在每个 node 上部署 nginx 来反向代理(tcp)所有 apiserver;然后 kubelet、kube-proxy 组件连接本地 127.0.0.1:6443 访问 apiserver,以确保任何 master 挂掉以后 node 都不会受到影响

  • nginx.conf
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
error_log stderr notice;

worker_processes auto;
events {
multi_accept on;
use epoll;
worker_connections 1024;
}

stream {
upstream kube_apiserver {
least_conn;
server 192.168.1.51:6443;
server 192.168.1.52:6443;
server 192.168.1.53:6443;
}

server {
listen 0.0.0.0:6443;
proxy_pass kube_apiserver;
proxy_timeout 10m;
proxy_connect_timeout 1s;
}
}
  • nginx-proxy.service
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
[Unit]
Description=kubernetes apiserver docker wrapper
Wants=docker.socket
After=docker.service

[Service]
User=root
PermissionsStartOnly=true
ExecStart=/usr/bin/docker run -p 127.0.0.1:6443:6443 \
-v /etc/nginx:/etc/nginx \
--name nginx-proxy \
--net=host \
--restart=on-failure:5 \
--memory=512M \
nginx:1.14.2-alpine
ExecStartPre=-/usr/bin/docker rm -f nginx-proxy
ExecStop=/usr/bin/docker stop nginx-proxy
Restart=always
RestartSec=15s
TimeoutStartSec=30s

[Install]
WantedBy=multi-user.target

然后在每个 node 上先启动 nginx-proxy,接着启动 kubelet 与 kube-proxy 即可(master 上的 kubelet、kube-proxy 只需要修改 ip 和 node name)

3.4.4、kubelet server 证书

注意: 新版本 kubelet server 的证书自动签发已经被关闭(看 issue 好像是由于安全原因),所以对于 kubelet server 的证书仍需要手动签署

1
2
3
4
5
6
docker1.node ➜  ~ kubectl get csr
NAME AGE REQUESTOR CONDITION
csr-99l77 10s system:node:docker4.node Pending
node-csr-aGwaNKorMc0MZBYOuJsJGCB8Bg8ds97rmE3oKBTV-_E 11s system:bootstrap:5d820b Approved,Issued
docker1.node ➜ ~ kubectl certificate approve csr-99l77
certificatesigningrequest.certificates.k8s.io/csr-99l77 approved

3.5、部署 Calico

当 node 全部启动后,由于网络组件(CNI)未安装会显示为 NotReady 状态;下面将部署 Calico 作为网络组件,完成跨节点网络通讯;具体安装文档可以参考 Installing with the etcd datastore

以下为 calico 的配置文件

  • calico.yaml
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
---
# Source: calico/templates/calico-etcd-secrets.yaml
# The following contains k8s Secrets for use with a TLS enabled etcd cluster.
# For information on populating Secrets, see http://kubernetes.io/docs/user-guide/secrets/
apiVersion: v1
kind: Secret
type: Opaque
metadata:
name: calico-etcd-secrets
namespace: kube-system
data:
# Populate the following with etcd TLS configuration if desired, but leave blank if
# not using TLS for etcd.
# The keys below should be uncommented and the values populated with the base64
# encoded contents of each file that would be associated with the TLS data.
# Example command for encoding a file contents: cat <file> | base64 -w 0
etcd-key: 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
etcd-cert: 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
etcd-ca: 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
---
# Source: calico/templates/calico-config.yaml
# This ConfigMap is used to configure a self-hosted Calico installation.
kind: ConfigMap
apiVersion: v1
metadata:
name: calico-config
namespace: kube-system
data:
# Configure this with the location of your etcd cluster.
etcd_endpoints: "https://192.168.1.51:2379,https://192.168.1.52:2379,https://192.168.1.53:2379"

# If you're using TLS enabled etcd uncomment the following.
# You must also populate the Secret below with these files.
etcd_ca: "/calico-secrets/etcd-ca"
etcd_cert: "/calico-secrets/etcd-cert"
etcd_key: "/calico-secrets/etcd-key"
# 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",
"etcd_endpoints": "__ETCD_ENDPOINTS__",
"etcd_key_file": "__ETCD_KEY_FILE__",
"etcd_cert_file": "__ETCD_CERT_FILE__",
"etcd_ca_cert_file": "__ETCD_CA_CERT_FILE__",
"mtu": __CNI_MTU__,
"ipam": {
"type": "calico-ipam"
},
"policy": {
"type": "k8s"
},
"kubernetes": {
"kubeconfig": "__KUBECONFIG_FILEPATH__"
}
},
{
"type": "portmap",
"snat": true,
"capabilities": {"portMappings": true}
}
]
}

---
# Source: calico/templates/rbac.yaml

# Include a clusterrole for the kube-controllers component,
# and bind it to the calico-kube-controllers serviceaccount.
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
name: calico-kube-controllers
rules:
# Pods are monitored for changing labels.
# The node controller monitors Kubernetes nodes.
# Namespace and serviceaccount labels are used for policy.
- apiGroups: [""]
resources:
- pods
- nodes
- namespaces
- serviceaccounts
verbs:
- watch
- list
# Watch for changes to Kubernetes NetworkPolicies.
- apiGroups: ["networking.k8s.io"]
resources:
- networkpolicies
verbs:
- watch
- list
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
name: calico-kube-controllers
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: calico-kube-controllers
subjects:
- kind: ServiceAccount
name: calico-kube-controllers
namespace: kube-system
---
# 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
- apiGroups: [""]
resources:
- nodes/status
verbs:
# Needed for clearing NodeNetworkUnavailable flag.
- patch
---
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
---

---
# Source: calico/templates/calico-node.yaml
# 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: extensions/v1beta1
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: calico/cni:v3.6.0
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
# The location of the Calico etcd cluster.
- name: ETCD_ENDPOINTS
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_endpoints
# 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
- mountPath: /calico-secrets
name: etcd-certs
containers:
# Runs calico/node container on each Kubernetes node. This
# container programs network policy and routes on each
# host.
- name: calico-node
image: calico/node:v3.6.0
env:
# The location of the Calico etcd cluster.
- name: ETCD_ENDPOINTS
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_endpoints
# Location of the CA certificate for etcd.
- name: ETCD_CA_CERT_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_ca
# Location of the client key for etcd.
- name: ETCD_KEY_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_key
# Location of the client certificate for etcd.
- name: ETCD_CERT_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_cert
# Set noderef for node controller.
- name: CALICO_K8S_NODE_REF
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"
# 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: "10.20.0.0/16"
# 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"
- name: IP_AUTODETECTION_METHOD
value: can-reach=192.168.1.51
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
- mountPath: /calico-secrets
name: etcd-certs
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
# Mount in the etcd TLS secrets with mode 400.
# See https://kubernetes.io/docs/concepts/configuration/secret/
- name: etcd-certs
secret:
secretName: calico-etcd-secrets
defaultMode: 0400
---

apiVersion: v1
kind: ServiceAccount
metadata:
name: calico-node
namespace: kube-system

---
# Source: calico/templates/calico-kube-controllers.yaml
# This manifest deploys the Calico Kubernetes controllers.
# See https://github.com/projectcalico/kube-controllers
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: calico-kube-controllers
namespace: kube-system
labels:
k8s-app: calico-kube-controllers
annotations:
scheduler.alpha.kubernetes.io/critical-pod: ''
spec:
# The controllers can only have a single active instance.
replicas: 1
strategy:
type: Recreate
template:
metadata:
name: calico-kube-controllers
namespace: kube-system
labels:
k8s-app: calico-kube-controllers
spec:
nodeSelector:
beta.kubernetes.io/os: linux
# The controllers must run in the host network namespace so that
# it isn't governed by policy that would prevent it from working.
hostNetwork: true
tolerations:
# Mark the pod as a critical add-on for rescheduling.
- key: CriticalAddonsOnly
operator: Exists
- key: node-role.kubernetes.io/master
effect: NoSchedule
serviceAccountName: calico-kube-controllers
containers:
- name: calico-kube-controllers
image: calico/kube-controllers:v3.6.0
env:
# The location of the Calico etcd cluster.
- name: ETCD_ENDPOINTS
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_endpoints
# Location of the CA certificate for etcd.
- name: ETCD_CA_CERT_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_ca
# Location of the client key for etcd.
- name: ETCD_KEY_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_key
# Location of the client certificate for etcd.
- name: ETCD_CERT_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_cert
# Choose which controllers to run.
- name: ENABLED_CONTROLLERS
value: policy,namespace,serviceaccount,workloadendpoint,node
volumeMounts:
# Mount in the etcd TLS secrets.
- mountPath: /calico-secrets
name: etcd-certs
readinessProbe:
exec:
command:
- /usr/bin/check-status
- -r
volumes:
# Mount in the etcd TLS secrets with mode 400.
# See https://kubernetes.io/docs/concepts/configuration/secret/
- name: etcd-certs
secret:
secretName: calico-etcd-secrets
defaultMode: 0400

---

apiVersion: v1
kind: ServiceAccount
metadata:
name: calico-kube-controllers
namespace: kube-system

需要注意的是我们添加了 IP_AUTODETECTION_METHOD 变量,这个变量会设置 calcio 获取 node ip 的方式;默认情况下采用 first-found 方式获取,即获取第一个有效网卡的 IP 作为 node ip;在某些多网卡机器上可能会出现问题;这里将值设置为 can-reach=192.168.1.51,即使用第一个能够访问 master 192.168.1.51 的网卡地址作为 node ip

最后执行创建即可,创建成功后如下所示

1
2
3
4
5
6
7
8
docker1.node ➜  ~ kubectl get pod -o wide -n kube-system
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
calico-kube-controllers-65bc6b9f9-cn27f 1/1 Running 0 85s 192.168.1.53 docker3.node <none> <none>
calico-node-c5nl8 1/1 Running 0 85s 192.168.1.53 docker3.node <none> <none>
calico-node-fqknv 1/1 Running 0 85s 192.168.1.51 docker1.node <none> <none>
calico-node-ldfzs 1/1 Running 0 85s 192.168.1.55 docker5.node <none> <none>
calico-node-ngjxc 1/1 Running 0 85s 192.168.1.52 docker2.node <none> <none>
calico-node-vj8np 1/1 Running 0 85s 192.168.1.54 docker4.node <none> <none>

此时所有 node 应当变为 Ready 状态

3.5、部署 DNS

其他组件全部完成后我们应当部署集群 DNS 使 service 等能够正常解析;集群 DNS 这里采用 coredns,具体安装文档参考 coredns/deployment;coredns 完整配置如下

  • coredns.yaml
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
apiVersion: v1
kind: ServiceAccount
metadata:
name: coredns
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
labels:
kubernetes.io/bootstrapping: rbac-defaults
name: system:coredns
rules:
- apiGroups:
- ""
resources:
- endpoints
- services
- pods
- namespaces
verbs:
- list
- watch
- apiGroups:
- ""
resources:
- nodes
verbs:
- get
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
annotations:
rbac.authorization.kubernetes.io/autoupdate: "true"
labels:
kubernetes.io/bootstrapping: rbac-defaults
name: system:coredns
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: system:coredns
subjects:
- kind: ServiceAccount
name: coredns
namespace: kube-system
---
apiVersion: v1
kind: ConfigMap
metadata:
name: coredns
namespace: kube-system
data:
Corefile: |
.:53 {
errors
health
kubernetes cluster.local in-addr.arpa ip6.arpa {
pods insecure
upstream
fallthrough in-addr.arpa ip6.arpa
}
prometheus :9153
forward . /etc/resolv.conf
cache 30
loop
reload
loadbalance
}
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: coredns
namespace: kube-system
labels:
k8s-app: kube-dns
kubernetes.io/name: "CoreDNS"
spec:
replicas: 2
strategy:
type: RollingUpdate
rollingUpdate:
maxUnavailable: 1
selector:
matchLabels:
k8s-app: kube-dns
template:
metadata:
labels:
k8s-app: kube-dns
spec:
priorityClassName: system-cluster-critical
serviceAccountName: coredns
tolerations:
- key: "CriticalAddonsOnly"
operator: "Exists"
nodeSelector:
beta.kubernetes.io/os: linux
containers:
- name: coredns
image: coredns/coredns:1.3.1
imagePullPolicy: IfNotPresent
resources:
limits:
memory: 170Mi
requests:
cpu: 100m
memory: 70Mi
args: [ "-conf", "/etc/coredns/Corefile" ]
volumeMounts:
- name: config-volume
mountPath: /etc/coredns
readOnly: true
ports:
- containerPort: 53
name: dns
protocol: UDP
- containerPort: 53
name: dns-tcp
protocol: TCP
- containerPort: 9153
name: metrics
protocol: TCP
securityContext:
allowPrivilegeEscalation: false
capabilities:
add:
- NET_BIND_SERVICE
drop:
- all
readOnlyRootFilesystem: true
livenessProbe:
httpGet:
path: /health
port: 8080
scheme: HTTP
initialDelaySeconds: 60
timeoutSeconds: 5
successThreshold: 1
failureThreshold: 5
readinessProbe:
httpGet:
path: /health
port: 8080
scheme: HTTP
dnsPolicy: Default
volumes:
- name: config-volume
configMap:
name: coredns
items:
- key: Corefile
path: Corefile
---
apiVersion: v1
kind: Service
metadata:
name: kube-dns
namespace: kube-system
annotations:
prometheus.io/port: "9153"
prometheus.io/scrape: "true"
labels:
k8s-app: kube-dns
kubernetes.io/cluster-service: "true"
kubernetes.io/name: "CoreDNS"
spec:
selector:
k8s-app: kube-dns
clusterIP: 10.254.0.2
ports:
- name: dns
port: 53
protocol: UDP
- name: dns-tcp
port: 53
protocol: TCP
- name: metrics
port: 9153
protocol: TCP

3.5、部署 DNS 自动扩容

在大规模集群的情况下,可能需要集群 DNS 自动扩容,具体文档请参考 DNS Horizontal Autoscaler,DNS 扩容算法可参考 Github,如有需要请自行修改;以下为具体配置

  • dns-horizontal-autoscaler.yaml
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
# Copyright 2016 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.

kind: ServiceAccount
apiVersion: v1
metadata:
name: kube-dns-autoscaler
namespace: kube-system
labels:
addonmanager.kubernetes.io/mode: Reconcile
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: system:kube-dns-autoscaler
labels:
addonmanager.kubernetes.io/mode: Reconcile
rules:
- apiGroups: [""]
resources: ["nodes"]
verbs: ["list"]
- apiGroups: [""]
resources: ["replicationcontrollers/scale"]
verbs: ["get", "update"]
- apiGroups: ["extensions"]
resources: ["deployments/scale", "replicasets/scale"]
verbs: ["get", "update"]
# Remove the configmaps rule once below issue is fixed:
# kubernetes-incubator/cluster-proportional-autoscaler#16
- apiGroups: [""]
resources: ["configmaps"]
verbs: ["get", "create"]
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: system:kube-dns-autoscaler
labels:
addonmanager.kubernetes.io/mode: Reconcile
subjects:
- kind: ServiceAccount
name: kube-dns-autoscaler
namespace: kube-system
roleRef:
kind: ClusterRole
name: system:kube-dns-autoscaler
apiGroup: rbac.authorization.k8s.io

---
apiVersion: apps/v1
kind: Deployment
metadata:
name: kube-dns-autoscaler
namespace: kube-system
labels:
k8s-app: kube-dns-autoscaler
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
spec:
selector:
matchLabels:
k8s-app: kube-dns-autoscaler
template:
metadata:
labels:
k8s-app: kube-dns-autoscaler
annotations:
scheduler.alpha.kubernetes.io/critical-pod: ''
spec:
priorityClassName: system-cluster-critical
containers:
- name: autoscaler
image: gcr.azk8s.cn/google_containers/cluster-proportional-autoscaler-amd64:1.1.2-r2
resources:
requests:
cpu: "20m"
memory: "10Mi"
command:
- /cluster-proportional-autoscaler
- --namespace=kube-system
- --configmap=kube-dns-autoscaler
# Should keep target in sync with cluster/addons/dns/kube-dns.yaml.base
- --target=Deployment/coredns
# When cluster is using large nodes(with more cores), "coresPerReplica" should dominate.
# If using small nodes, "nodesPerReplica" should dominate.
- --default-params={"linear":{"coresPerReplica":256,"nodesPerReplica":16,"preventSinglePointFailure":true}}
- --logtostderr=true
- --v=2
tolerations:
- key: "CriticalAddonsOnly"
operator: "Exists"
serviceAccountName: kube-dns-autoscaler

四、其他

4.1、集群测试

为测试集群工作正常,我们创建一个 deployment 和一个 service,用于测试联通性和 DNS 工作是否正常;测试配置如下

  • test.yaml
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
apiVersion: apps/v1
kind: Deployment
metadata:
name: test
labels:
app: test
spec:
replicas: 5
selector:
matchLabels:
app: test
template:
metadata:
labels:
app: test
spec:
containers:
- name: test
image: nginx:1.14.2-alpine
ports:
- containerPort: 80
---
apiVersion: v1
kind: Service
metadata:
name: test-service
spec:
selector:
app: test
ports:
- name: nginx
port: 80
nodePort: 30001
targetPort: 80
protocol: TCP
type: NodePort

测试方式很简单,进入某一个 pod ping 其他 pod ip 确认网络是否正常,直接访问 service 名称测试 DNS 是否工作正常,这里不再演示

4.2、其他说明

此次搭建开启了大部分认证,限于篇幅原因没有将每个选项作用做完整解释,推荐搭建完成后仔细阅读以下 --help 中的描述(官方文档页面有时候更新不完整);目前 apiserver 仍然保留了 8080 端口(因为直接使用 kubectl 方便),但是在高安全性环境请关闭 8080 端口,因为即使绑定在 127.0.0.1 上,对于任何能够登录 master 机器的用户仍然能够不经验证操作整个集群


Kubernetes 1.13.4 搭建
https://mritd.com/2019/03/16/set-up-kubernetes-1.13.4-cluster/
作者
Kovacs
发布于
2019年3月16日
许可协议