一、所有安装包、脚本、脚本说明、下载链接：https://pan.baidu.com/s/1kHaesJJuMQ5cG-O_nvljtg 提取码：kkv6 二、脚本安装说明 1、脚本说明： 本实验为三台master组成高可用，另外一台单独安装node组件,一共四个节点； 脚本里面的几个apiserver地址是写死的，所以部署时候用的ip不一样的话，需要替换； flanneld、coredns 文件里面ip是写死的，所以部署时候用的ip不一样的话，需要替换 /root/ssl/目录下有几个shell脚本里面的一些信息也是写死的，需要替换。 实验采用root进制安装，如果使用其他用户，所有命令前加上sudo； 用到的技术点: shel、python、jinja2、ansible、playbook 如果笔记本配置低的话，最好分开安装，先安装etcd集群，然后重启所有节点，再安装k8s集群。否则cpu会很高。导致到后面安装flananl总是无法启动 测试过5遍，都可以搭建成功的，脚本不要动了，一动就容易出错， 脚本耗时 2小时，如果笔记本配置高，安装完etcd，cpu不高的话，就不需要重启笔记本，那样可能需要1.5个小时 2、项目架构： test1: 192.168.0.91 etcd、kubectl、kube-apiserver、kube-controller-manager、kube-scheduler、haproxy、keepalived ansible python test2: 192.168.0.92 etcd、kubectl、kube-apiserver、kube-controller-manager、kube-scheduler、haproxy、keepalived python test3: 192.168.0.93 etcd、kubectl、kube-apiserver、kube-controller-manager、kube-scheduler、haproxy、keepalived python test4: 192.168.0.94 docker、kubectl工具、kubelet组件、kube-proxy、flannel、coredns python jinja2 3、环境配置 参照本目录中环境配置篇进行操作 说明：环境配置中包含：配置免密登录、安装ansible、关闭防火墙、selinux、swap、修改主机名、配置hosts解析、安装python、pip、重启 4、test1节点创建目录 mkdir -p /k8s/profile/ mkdir -p /server/software/k8s/ mkdir -p /root/ssl/ mkdir -p /script/ 5、需要的文件放到/k8s/profile/目录下 cd /k8s/profile/ rz unzip profile.zip chmod +x /k8s/profile/* ls /k8s/profile/ apiserver-to-kubelet.yaml encryption-config.py kube-apiserver.service.template.py.bak a.py encryption-config-template.py kube-controller-manager.service.py audit-policy.yaml etcd.service.py kube-controller-manager.service.template.py bootstrap-copy.sh etcd.service.template.py kube-flannel.yml.j2 bootstrap-copy.sh.bak flanneld.service.py kubelet.config.json.py bootstrap-kubeconfig.sh flanneld.service.template.py kubelet.config.json.template.py bootstrap-kubeconfig.sh.bak2 flannel_to_etcd.sh kubelet.service.py coredns.yaml.j2 haproxy.cfg kubelet.service.template.py csr-crb.yaml hosts kube-proxy.config.yaml.py daemon.json k8s.conf kube-proxy.config.yaml.template.py deploy_coredns.retry keepalived-back.py kube-proxy.service deploy_coredns.yaml keepalived-backup-template.py kubernetes.conf deploy_flanneld.retry keepalived-master.py kube-scheduler.service deploy_flanneld.yaml keepalived-master-template.py profile.zip deploy_flanneld.yaml.bak kube-apiserver.service.py start-docker.sh docker.service kube-apiserver.service.template.py token-template.py 6、安装包放到/server/software/k8s/下 cd /server/software/k8s/ rz ls /server/software/k8s/ cfssl-certinfo_linux-amd64 docker-18.03.1-ce.tgz kubernetes README.md cfssljson_linux-amd64 docker-ce-18.03.0.ce-1.el7.centos.x86_64.rpm kubernetes-server-linux-amd64.tar.gz root@192.168.0.94 cfssl_linux-amd64 etcd-v3.3.9-linux-amd64 mk-docker-opts.sh cni-plugins-amd64-v0.7.1.tgz etcd-v3.3.9-linux-amd64.tar.gz pip-18.0.tar.gz coredns-1.2.2.tar.gz flannel.tar Python-3.6.5.tgz 7、创建证书所需文件 cd /root/ssl/ rz ssl.zip unzip ssl.zip ls /root/ssl/ admin.conf ca.csr flanneld.csr kube-controller-manager-csr.json kubernetes-csr.json admin.csr ca-csr.json flanneld-csr.json kube-proxy.csr kube-scheduler.csr admin-csr.json etcd.csr k8s.py kube-proxy-csr.json kube-scheduler-csr.json ca-config.json etcd-csr.json kube-controller-manager.csr kubernetes.csr ssl.zip 8、脚本放到/script/目录下 cd /script/ rz k8s.py ls /script/ k8s.py pip-python.sh 9、给辅助shell脚本授权 chmod +x /k8s/profile/* 9、打开主脚本函数 去掉主脚本里面最后面几行函数注释 10、开始执行 python /script/k8s.py 三、k8s.py脚本内容 [root@test1 script]# cat /script/k8s.py #!/usr/bin/python # -*- coding: utf-8 -*- from __future__ import print_function import os, sys, stat import shutil import tarfile import subprocess # 定义环境变量 # 定义主机名 NODE_NAME = subprocess.check_output(["hostname"], shell=True) NODE_NAME = str(NODE_NAME.decode('utf8').strip()).strip('b') # 定义主机ip NODE_IP = subprocess.check_output(["hostname -i | awk '{print $NF}'"], shell=True) NODE_IP = str(NODE_IP.decode('utf8').strip()).strip('b') #定义key ENCRYPTION_KEY = subprocess.check_output(["head -c 32 /dev/urandom | base64"], shell=True) ENCRYPTION_KEY = str(ENCRYPTION_KEY.decode('utf8').strip()).strip('b') SERVICE_CIDR = "10.254.0.0/16" CLUSTER_CIDR = "172.30.0.0/16" NODE_PORT_RANGE = "8000-30000" NODE_IPS = ['192.168.0.91', '192.168.0.92', '192.168.0.93'] NODE_NAMES = ['test1', 'test2', 'test3','test4'] MASTER_VIP = "192.168.0.235" KUBE_APISERVER = "https://192.168.0.235:8443" VIP_IF = "ens33" ETCD_ENDPOINTS = "https://192.168.0.91:2379,https://192.168.0.92:2379,https://192.168.0.93:2379" ETCD_NODES = "test1=https://192.168.0.91:2380,test2=https://192.168.0.92:2380,test3=https://192.168.0.93:2380" FLANNEL_ETCD_PREFIX = "/kubernetes/network/" CLUSTER_KUBERNETES_SVC_IP = "10.254.0.1" CLUSTER_DNS_SVC_IP = "10.254.0.2" CLUSTER_DNS_DOMAIN = "cluster.local." IFACE="ens33" def create_dir_kernel_parameters(): print("创建目录、配置内核参数、安装依赖包") #所有节点创建目录 subprocess.call(["time ansible k8s -m file -a 'path=/k8s/profile/ state=directory mode=0777'"], shell=True) subprocess.call(["time ansible k8s -m file -a 'path=/server/software/k8s/ state=directory mode=0777'"], shell=True) subprocess.call(["time ansible k8s -m file -a 'path=/root/ssl/ state=directory mode=0777'"], shell=True) subprocess.call(["time ansible k8s -m file -a 'path=/script/ state=directory mode=0777'"], shell=True) #配置内核参数 subprocess.call(["ansible k8s -m shell -a 'iptables -P FORWARD ACCEPT'"], shell=True) subprocess.call(["time ansible k8s -m copy -a 'src=/k8s/profile/k8s.conf dest=/etc/sysctl.d/k8s.conf force=yes'"], shell=True) subprocess.call(["ansible k8s -m shell -a 'sysctl --system'"], shell=True) subprocess.call(["ansible k8s -m shell -a 'modprobe ip_vs'"], shell=True) subprocess.call(["ansible k8s -m shell -a 'modprobe ip_vs_rr'"], shell=True) subprocess.call(["ansible k8s -m shell -a 'modprobe ip_vs_wrr'"], shell=True) subprocess.call(["ansible k8s -m shell -a 'modprobe ip_vs_sh'"], shell=True) subprocess.call(["ansible k8s -m shell -a 'modprobe nf_conntrack_ipv4'"], shell=True) subprocess.call(["ansible k8s -m shell -a 'lsmod | grep ip_vs'"], shell=True) #安装依赖包， 其实这一步只是配置node节点的kube-proxy步骤需要用到 subprocess.call(["ansible k8s -m shell -a 'yum install -y conntrack ipvsadm ipset jq sysstat curl iptables libseccomp'"], shell=True) def install_cfssl(): print("安装 cfssl 工具集") subprocess.call(["ansible k8s -m file -a 'path=/server/software/k8s/ state=directory mode=0777'"], shell=True) os.chdir('/server/software/k8s/') subprocess.call(["ansible test1 -m copy -a 'src=/server/software/k8s/cfssl-certinfo_linux-amd64 dest=/usr/local/bin/cfssl-certinfo force=yes'"], shell=True) subprocess.call(["ansible test1 -m copy -a 'src=/server/software/k8s/cfssl_linux-amd64 dest=/usr/local/bin/cfssl'"], shell=True) subprocess.call(["ansible test1 -m copy -a 'src=/server/software/k8s/cfssljson_linux-amd64 dest=/usr/local/bin/cfssljson'"], shell=True) os.chdir('/usr/local/bin/') os.chmod("cfssl-certinfo", stat.S_IXOTH) os.chmod("cfssl", stat.S_IXOTH) os.chmod("cfssljson", stat.S_IXOTH) print("successful") def create_root_ca(): print("创建CA根证书") os.chdir('/root/ssl/') subprocess.call(["time ansible k8s -m file -a 'path=/root/ssl/ state=directory mode=0777'"], shell=True) subprocess.call(["cfssl gencert -initca ca-csr.json | cfssljson -bare ca"], shell=True) #创建用户 subprocess.call(["time ansible k8s -m shell -a 'useradd k8s'"],shell=True) #创建目录 subprocess.call(["time ansible k8s -m shell -a 'mkdir -p /etc/kubernetes/cert/ && chown -R k8s /etc/kubernetes'"],shell=True) subprocess.call(["time ansible k8s -m copy -a 'src=/root/ssl/ dest=/etc/kubernetes/cert/ force=yes'"], shell=True) print("successful") def distribute_kubectl(): print("分发 所有 二进制文件、安装kubectl ") os.chdir('/server/software/k8s/') shutil.unpack_archive('kubernetes-server-linux-amd64.tar.gz') subprocess.call(["time ansible k8s -m file -a 'path=/opt/k8s/bin/ state=directory mode=0777'"], shell=True) subprocess.call(["time ansible k8s -m copy -a 'src=/server/software/k8s/kubernetes/server/bin/ dest=/opt/k8s/bin/ force=yes'"],shell=True) subprocess.call(["chmod +x /opt/k8s/bin/*"], shell=True) subprocess.call(["time ansible k8s -m copy -a 'src=/opt/k8s/bin/kubectl dest=/usr/local/bin/ force=yes'"], shell=True) subprocess.call(["time ansible k8s -m shell -a 'chmod +x /usr/local/bin/kubectl'"], shell=True) print("successful") def create_admin_ca(): print("创建 admin 证书和私钥 ") os.chdir('/root/ssl/') subprocess.call(["ansible k8s -m shell -a 'chmod +x /etc/kubernetes/cert/*'"], shell=True) subprocess.call(["cfssl gencert -ca=/etc/kubernetes/cert/ca.pem -ca-key=/etc/kubernetes/cert/ca-key.pem -config=/etc/kubernetes/cert/ca-config.json -profile=kubernetes admin-csr.json | cfssljson -bare admin"],shell=True) subprocess.call(["ansible k8s -m copy -a 'src=/root/ssl/admin.pem dest=/etc/kubernetes/cert/ force=yes'"], shell=True) subprocess.call(["ansible k8s -m copy -a 'src=/root/ssl/admin-key.pem dest=/etc/kubernetes/cert/ force=yes'"], shell=True) #给证书授权 subprocess.call(["ansible k8s -m shell -a 'chmod +x /etc/kubernetes/cert/*'"], shell=True) print("successful") def create_admin_kubeconfig(): print("创建admin kubeconfig 文件") os.chdir('/root/ssl/') subprocess.call(["kubectl config set-cluster kubernetes --certificate-authority=/etc/kubernetes/cert/ca.pem --embed-certs=true --server=https://192.168.0.235:8443 --kubeconfig=admin.conf"],shell=True) subprocess.call(["kubectl config set-credentials admin --client-certificate=admin.pem --client-key=admin-key.pem --embed-certs=true --kubeconfig=admin.conf"],shell=True) subprocess.call(["kubectl config set-context kubernetes --cluster=kubernetes --user=admin --kubeconfig=admin.conf"],shell=True) subprocess.call(["kubectl config use-context kubernetes --kubeconfig=admin.conf"],shell=True) subprocess.call(["ansible k8s -m file -a 'path=/root/.kube/ state=directory mode=0777'"], shell=True) subprocess.call(["ansible k8s -m copy -a 'src=/root/ssl/admin.conf dest=/root/.kube/config force=yes'"], shell=True) subprocess.call(["ansible k8s -m shell -a 'chmod +x /root/.kube/*'"], shell=True) print("创建admin kubeconfig 文件完成") def install_etcd_cluster(): print("部署 etcd 集群") # 解压和分发 etcd 二进制文件 os.chdir('/server/software/k8s/') shutil.unpack_archive('etcd-v3.3.9-linux-amd64.tar.gz') subprocess.call(["time ansible k8s -m copy -a 'src=/server/software/k8s/etcd-v3.3.9-linux-amd64/ dest=/opt/k8s/bin/ force=yes'"],shell=True) subprocess.call(["time ansible k8s -m shell -a 'chmod +x /opt/k8s/bin/*'"],shell=True) subprocess.call(["time ansible k8s -m shell -a 'ln -s /opt/k8s/bin/etcdctl /usr/bin/etcdctl'"],shell=True) # 创建 etcd 证书和私钥 os.chdir('/root/ssl/') subprocess.call(["cfssl gencert -ca=/etc/kubernetes/cert/ca.pem -ca-key=/etc/kubernetes/cert/ca-key.pem -config=/etc/kubernetes/cert/ca-config.json -profile=kubernetes etcd-csr.json | cfssljson -bare etcd"],shell=True) subprocess.call(["time ansible k8s -m file -a 'path=/etc/etcd/cert/ state=directory mode=0777'"], shell=True) subprocess.call(["time ansible k8s -m copy -a 'src=/root/ssl/ dest=/etc/etcd/cert/ force=yes'"], shell=True) # 创建 etcd.service文件 subprocess.call(["time ansible k8s -m file -a 'path=/k8s/profile/ state=directory mode=0777'"], shell=True) subprocess.call(["time ansible k8s -m copy -a 'src=/k8s/profile/ dest=/k8s/profile/ force=yes'"], shell=True) subprocess.call(["time ansible k8s -m shell -a 'python /k8s/profile/etcd.service.py'"],shell=True) #创建 etcd 数据目录 subprocess.call(["time ansible k8s -m file -a 'path=/var/lib/etcd/ state=directory mode=0777'"], shell=True) subprocess.call(["time ansible k8s -m shell -a 'chmod +x /var/lib/etcd'"],shell=True) #启动 etcd 服务 subprocess.call(["time ansible k8s -m shell -a 'systemctl daemon-reload'"],shell=True) subprocess.call(["time ansible k8s -m service -a 'name=etcd state=started'"],shell=True) subprocess.call(["ansible k8s -m service -a 'name=etcd enabled=yes'"],shell=True) #检查启动结果 subprocess.call(["time ansible k8s -m shell -a 'systemctl status etcd'"],shell=True) #验证服务状态 subprocess.call(["/opt/k8s/bin/etcdctl --ca-file=/etc/kubernetes/cert/ca.pem --cert-file /etc/etcd/cert/etcd.pem --key-file /etc/etcd/cert/etcd-key.pem cluster-health"],shell=True) #说明：如果启动失败就把所有节点关机重启就即可解决 def install_haproxy(): print("安装haproxy") #安装软件 subprocess.call(["ansible k8s -m shell -a 'yum install -y haproxy'"],shell=True) #配置和下发 haproxy 配置文件 subprocess.call(["ansible k8s -m copy -a 'src=/k8s/profile/haproxy.cfg dest=/etc/haproxy force=yes'"], shell=True) #启动haproxy subprocess.call(["ansible k8s -m shell -a 'systemctl daemon-reload'"],shell=True) subprocess.call(["ansible k8s -m service -a 'name=haproxy state=started'"],shell=True) subprocess.call(["ansible k8s -m service -a 'name=haproxy enabled=yes'"],shell=True) #检查启动结果 subprocess.call(["time ansible k8s -m shell -a 'systemctl status haproxy'"],shell=True) def install_keepalived(): print("安装keepalived") #安装软件 subprocess.call(["ansible k8s -m shell -a 'yum install -y keepalived'"],shell=True) #配置和下发 keepalived 配置文件 subprocess.call(["ansible k8s -m copy -a 'src=/k8s/profile/ dest=/k8s/profile/ force=yes'"], shell=True) subprocess.call(["ansible test1 -m shell -a 'python /k8s/profile/keepalived-master.py'"],shell=True) subprocess.call(["ansible test0 -m shell -a 'python /k8s/profile/keepalived-back.py'"],shell=True) #起动keepalived 服务 subprocess.call(["ansible k8s -m shell -a 'systemctl daemon-reload'"],shell=True) subprocess.call(["ansible k8s -m service -a 'name=keepalived state=started'"],shell=True) subprocess.call(["ansible k8s -m service -a 'name=keepalived enabled=yes'"],shell=True) #检查启动结果 subprocess.call(["time ansible k8s -m shell -a 'systemctl status keepalived'"],shell=True) #测试是否能ping通vip subprocess.call(["time ansible k8s -m shell -a 'ping -c 1 192.168.0.235'"],shell=True) #查看 haproxy 状态页面 http://192.168.0.235:10080/status；账号密码：admin/123456 def kube_apiserver(): print("部署 kube-apiserver 组件") #创建 kubernetes 证书和私钥 os.chdir('/root/ssl/') subprocess.call(["cfssl gencert -ca=/etc/kubernetes/cert/ca.pem -ca-key=/etc/kubernetes/cert/ca-key.pem -config=/etc/kubernetes/cert/ca-config.json -profile=kubernetes kubernetes-csr.json | cfssljson -bare kubernetes"], shell=True) #生产service account key subprocess.call(["ansible test1 -m shell -a 'openssl genrsa -out /root/ssl/sa.key 2048'"], shell=True) subprocess.call(["ansible test1 -m shell -a 'openssl rsa -in /root/ssl/sa.key -pubout -out /root/ssl/sa.pub'"], shell=True) #将生成的证书、私钥、ervice account key 分发到所有节点 subprocess.call(["ansible k8s -m copy -a 'src=/root/ssl/ dest=/etc/kubernetes/cert/ force=yes'"], shell=True) subprocess.call(["ansible k8s -m shell -a 'chmod +x /etc/kubernetes/cert/'"], shell=True) #创建、分发加密配置文件 subprocess.call(["ansible k8s -m shell -a 'python /k8s/profile/encryption-config.py'"],shell=True) subprocess.call(["ansible k8s -m copy -a 'src=/etc/kubernetes/encryption-config.yaml dest=/etc/kubernetes force=yes'"], shell=True) #创建、分发kube-apiserver文件 subprocess.call(["ansible k8s -m copy -a 'src=/k8s/profile/kube-apiserver.service.py dest=/k8s/profile/ force=yes'"], shell=True) subprocess.call(["ansible k8s -m copy -a 'src=/k8s/profile/kube-apiserver.service.template.py dest=/k8s/profile/ force=yes'"], shell=True) subprocess.call(["ansible k8s -m shell -a 'python /k8s/profile/kube-apiserver.service.py'"],shell=True) #起动kube-apiserver 服务 subprocess.call(["ansible k8s -m shell -a 'systemctl daemon-reload'"],shell=True) subprocess.call(["ansible k8s -m service -a 'name=kube-apiserver state=started'"],shell=True) subprocess.call(["ansible k8s -m service -a 'name=kube-apiserver enabled=yes'"],shell=True) #检查 kube-apiserver服务 运行状态 subprocess.call(["time ansible k8s -m shell -a 'systemctl status kube-apiserver'"],shell=True) #检查集群运行状态 subprocess.call(["ansible k8s -m shell -a 'kubectl cluster-info'"],shell=True) subprocess.call(["ansible k8s -m shell -a 'kubectl get componentstatuses'"],shell=True) #授予 kubernetes 证书访问 kubelet API 的权限, 这句话感觉没什么用，到最后还是出现Forbidden (user=kubernetes, verb=create, resource=nodes, subresource=proxy) #所以在安装kubelet时候采取了绝招。 subprocess.call(["ansible k8s -m shell -a 'kubectl create clusterrolebinding kube-apiserver:kubelet-apis --clusterrole=system:kubelet-api-admin --user kubernete'"],shell=True) print("上面报错忽略，不要乱改脚本了，之前这里只是改成了test1，集群就无法启动了") subprocess.call(["ansible k8s -m shell -a 'sleep 60s'"], shell=True) def kube_controller_manager(): print("部署高可用 kube-controller-manager 集群") #创建 kubernetes 证书和私钥 os.chdir('/root/ssl/') subprocess.call(["cfssl gencert -ca=/etc/kubernetes/cert/ca.pem -ca-key=/etc/kubernetes/cert/ca-key.pem -config=/etc/kubernetes/cert/ca-config.json -profile=kubernetes kube-controller-manager-csr.json | cfssljson -bare kube-controller-manager"], shell=True) #将生成的证书和私钥分发到所有节点 subprocess.call(["ansible k8s -m copy -a 'src=/root/ssl/ dest=/etc/kubernetes/cert/ force=yes'"], shell=True) subprocess.call(["ansible k8s -m shell -a 'chmod +x /etc/kubernetes/cert/'"], shell=True) #创建和分发 kubeconfig 文件 subprocess.call(["kubectl config set-cluster kubernetes --certificate-authority=/etc/kubernetes/cert/ca.pem --embed-certs=true --server=https://192.168.0.235:8443 --kubeconfig=kube-controller-manager.kubeconfig"], shell=True) subprocess.call(["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"], shell=True) subprocess.call(["kubectl config set-context system:kube-controller-manager --cluster=kubernetes --user=system:kube-controller-manager --kubeconfig=kube-controller-manager.kubeconfig"], shell=True) subprocess.call(["kubectl config use-context system:kube-controller-manager --kubeconfig=kube-controller-manager.kubeconfig"], shell=True) subprocess.call(["ansible k8s -m copy -a 'src=/root/ssl/kube-controller-manager.kubeconfig dest=/etc/kubernetes/ force=yes'"], shell=True) subprocess.call(["ansible k8s -m shell -a 'chmod +x /etc/kubernetes/*'"], shell=True) #创建、分发kube-controller-manager.service subprocess.call(["ansible k8s -m copy -a 'src=/k8s/profile/kube-controller-manager.service.template.py dest=/k8s/profile/ force=yes'"], shell=True) subprocess.call(["ansible k8s -m copy -a 'src=/k8s/profile/kube-controller-manager.service.py dest=/k8s/profile/ force=yes'"], shell=True) subprocess.call(["ansible k8s -m shell -a 'python /k8s/profile/kube-controller-manager.service.py'"],shell=True) #创建日志目录 subprocess.call(["ansible k8s -m file -a 'path=/var/log/kubernetes/ state=directory mode=0777'"], shell=True) subprocess.call(["ansible k8s -m shell -a 'chmod +x /var/log/kubernetes/'"], shell=True) #启动 kube-controller-manager 服务 subprocess.call(["ansible k8s -m shell -a 'systemctl daemon-reload'"],shell=True) subprocess.call(["ansible k8s -m service -a 'name=kube-controller-manager state=started'"],shell=True) subprocess.call(["ansible k8s -m service -a 'name=kube-controller-manager enabled=yes'"],shell=True) #检查 kube-controller-manager 运行状态 subprocess.call(["time ansible k8s -m shell -a 'systemctl status kube-controller-manager'"],shell=True) #查看leader节点 subprocess.call(["kubectl get endpoints kube-controller-manager --namespace=kube-system -o yaml"],shell=True) def install_kube_scheduler(): print("部署高可用 kube-scheduler 集群") #创建 kube-scheduler 证书和私钥 os.chdir('/root/ssl/') subprocess.call(["cfssl gencert -ca=/etc/kubernetes/cert/ca.pem -ca-key=/etc/kubernetes/cert/ca-key.pem -config=/etc/kubernetes/cert/ca-config.json -profile=kubernetes kube-scheduler-csr.json | cfssljson -bare kube-scheduler"], shell=True) #将生成的证书和私钥分发到所有节点 subprocess.call(["ansible k8s -m copy -a 'src=/root/ssl/kube-scheduler.pem dest=/etc/kubernetes/cert/ force=yes'"], shell=True) subprocess.call(["ansible k8s -m copy -a 'src=/root/ssl/kube-scheduler-key.pem dest=/etc/kubernetes/cert/ force=yes'"], shell=True) subprocess.call(["ansible k8s -m shell -a 'chmod +x /etc/kubernetes/cert/'"], shell=True) #创建和分发 kubeconfig 文件 subprocess.call(["kubectl config set-cluster kubernetes --certificate-authority=/etc/kubernetes/cert/ca.pem --embed-certs=true --server=https://192.168.0.235:8443 --kubeconfig=kube-scheduler.kubeconfig"], shell=True) subprocess.call(["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"], shell=True) subprocess.call(["kubectl config set-context system:kube-scheduler --cluster=kubernetes --user=system:kube-scheduler --kubeconfig=kube-scheduler.kubeconfig"], shell=True) subprocess.call(["kubectl config use-context system:kube-scheduler --kubeconfig=kube-scheduler.kubeconfig"], shell=True) subprocess.call(["ansible k8s -m copy -a 'src=/root/ssl/kube-scheduler.kubeconfig dest=/etc/kubernetes/ force=yes'"], shell=True) subprocess.call(["ansible k8s -m shell -a 'chmod +x /etc/kubernetes/*'"], shell=True) #创建和分发kube-scheduler.service subprocess.call(["ansible k8s -m copy -a 'src=/k8s/profile/kube-scheduler.service dest=/etc/systemd/system/ force=yes'"], shell=True) #启动kube-scheduler 服务 subprocess.call(["ansible k8s -m shell -a 'systemctl daemon-reload'"],shell=True) subprocess.call(["ansible k8s -m service -a 'name=kube-scheduler state=started'"],shell=True) subprocess.call(["ansible k8s -m service -a 'name=kube-scheduler enabled=yes'"],shell=True) #检查 kube-scheduler 运行状态 subprocess.call(["time ansible k8s -m shell -a 'systemctl status kube-scheduler'"],shell=True) #查看leader节点 subprocess.call(["kubectl get endpoints kube-scheduler --namespace=kube-system -o yaml"],shell=True) def environmental_configuration(): print("下面开始单独安装worker节点，worker节点主机名：test4") print("配置环境") #所有节点创建目录 subprocess.call(["time ansible test4 -m file -a 'path=/k8s/profile/ state=directory mode=0777'"], shell=True) subprocess.call(["time ansible test4 -m file -a 'path=/server/software/k8s/ state=directory mode=0777'"], shell=True) subprocess.call(["time ansible test4 -m file -a 'path=/root/ssl/ state=directory mode=0777'"], shell=True) subprocess.call(["time ansible test4 -m file -a 'path=/script/ state=directory mode=0777'"], shell=True) #加载ipvs内核参数，其实这一步在安装kube-proxy那一步时执行即可 subprocess.call(["ansible test4 -m shell -a 'iptables -P FORWARD ACCEPT'"], shell=True) subprocess.call(["time ansible test4 -m copy -a 'src=/k8s/profile/k8s.conf dest=/etc/sysctl.d/k8s.conf force=yes'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'sysctl --system'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'modprobe ip_vs'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'modprobe ip_vs_rr'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'modprobe ip_vs_wrr'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'modprobe ip_vs_sh'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'modprobe nf_conntrack_ipv4'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'lsmod | grep ip_vs'"], shell=True) #安装依赖包， 其实这一步只是配置node节点的kube-proxy步骤需要用到 subprocess.call(["ansible test4 -m shell -a 'yum install -y conntrack ipvsadm ipset jq sysstat curl iptables libseccomp'"], shell=True) #创建k8s群组 subprocess.call(["ansible test4 -m group -a 'name=k8s state=present'"], shell=True) #创建k8s用户 subprocess.call(["ansible test4 -m user -a 'name=k8s group=k8s'"], shell=True) def install_docker(): print("部署docker") #移除自带安装包 subprocess.call(["ansible test4 -m shell -a 'yum remove -y docker-ce docker-ce-selinux container-selinux'"],shell=True) #下发docker安装包 subprocess.call(["ansible test4 -m copy -a 'src=/server/software/k8s/docker-ce-18.03.0.ce-1.el7.centos.x86_64.rpm dest=/server/software/k8s/ force=yes'"], shell=True) #安装docker subprocess.call(["ansible test4 -m shell -a 'chdir=/server/software/k8s/ yum install -y docker-ce-*.rpm'"],shell=True) #配置docker加速 subprocess.call(["ansible test4 -m copy -a 'src=/k8s/profile/daemon.json dest=/etc/docker/ force=yes'"], shell=True) #启动docker subprocess.call(["ansible test4 -m shell -a 'systemctl start docker'"],shell=True) subprocess.call(["ansible test4 -m shell -a 'systemctl enable docker'"],shell=True) def install_kubelet(): print("部署 kubelet 组件") os.chdir('/root/ssl/') #创建工作目录和日志目录 subprocess.call(["ansible test4 -m file -a 'path=/var/lib/kubelet/ state=directory mode=0777'"], shell=True) subprocess.call(["ansible test4 -m file -a 'path=/var/log/kubernetes/ state=directory mode=0777'"], shell=True) #配置admin-config subprocess.call(["ansible test4 -m file -a 'path=/root/.kube/ state=directory mode=0777'"], shell=True) subprocess.call(["ansible test4 -m copy -a 'src=/root/ssl/admin.conf dest=/root/.kube/config force=yes'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'chmod +x /root/.kube/*'"], shell=True) #配置kubectl工具 subprocess.call(["ansible test4 -m copy -a 'src=/opt/k8s/bin/kubectl dest=/usr/local/bin/ force=yes'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'chmod +x /usr/local/bin/kubectl'"], shell=True) #配置kubeadm工具， 注意：在test1上操作 subprocess.call(["ansible test1 -m copy -a 'src=/opt/k8s/bin/kubeadm dest=/usr/local/bin/ force=yes'"], shell=True) subprocess.call(["ansible test1 -m shell -a 'chmod +x /usr/local/bin/kubeadm'"], shell=True) #创建 kubelet bootstrap kubeconfig 文件，包含创建token subprocess.call(["ansible test1 -m shell -a 'chmod +x /k8s/profile/bootstrap-kubeconfig.sh'"], shell=True) subprocess.call(["ansible test1 -m shell -a 'sh /k8s/profile/bootstrap-kubeconfig.sh'"], shell=True) #分发kubelet bootstrap kubeconfig 文件到所有节点 subprocess.call(["ansible test1 -m shell -a 'chmod +x /k8s/profile/bootstrap-copy.sh'"], shell=True) subprocess.call(["ansible test1 -m shell -a 'sh /k8s/profile/bootstrap-copy.sh'"], shell=True) print("上面报错忽略，没有影响") subprocess.call(["ansible test4 -m shell -a 'sleep 30s'"],shell=True) #配置 bootstrap RBAC 权限 subprocess.call(["kubectl create clusterrolebinding kubelet-bootstrap --clusterrole=system:node-bootstrapper --group=system:bootstrappers"],shell=True) #查看 kubeadm 为各节点创建的 token；之前好好的，后来查看报错 #subprocess.call(["ansible test1 -m shell -a 'kubeadm token list --kubeconfig ~/.kube/config'"], shell=True) #分发ca证书到worker 节点 subprocess.call(["ansible test4 -m copy -a 'src=/root/ssl/ca.pem dest=/etc/kubernetes/cert/ force=yes'"], shell=True) #创建 kubelet 参数配置文件 subprocess.call(["ansible test4 -m copy -a 'src=/k8s/profile/kubelet.config.json.template.py dest=/k8s/profile/ force=yes'"], shell=True) subprocess.call(["ansible test4 -m copy -a 'src=/k8s/profile/kubelet.config.json.py dest=/k8s/profile/ force=yes'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'python /k8s/profile/kubelet.config.json.py'"],shell=True) #分发kubelet二进制文件 subprocess.call(["time ansible test4 -m copy -a 'src=/opt/k8s/bin/kubelet dest=/opt/k8s/bin/ force=yes'"], shell=True) subprocess.call(["time ansible test4 -m shell -a 'chmod +x /opt/k8s/bin/kubelet'"], shell=True) #创建和分发kubelet启动文件 subprocess.call(["ansible test4 -m copy -a 'src=/k8s/profile/kubelet.service.template.py dest=/k8s/profile/ force=yes'"], shell=True) subprocess.call(["ansible test4 -m copy -a 'src=/k8s/profile/kubelet.service.py dest=/k8s/profile/ force=yes'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'python /k8s/profile/kubelet.service.py'"],shell=True) #给kunelet授权操作pod权限，包括进入pod等操作，真正解决 Forbidden (user=kubernetes,）问题 subprocess.call(["ansible test4 -m copy -a 'src=/k8s/profile/apiserver-to-kubelet.yaml dest=/k8s/profile/apiserver-to-kubelet.yaml force=yes'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'kubectl create -f /k8s/profile/apiserver-to-kubelet.yaml'"],shell=True) #启动 kubelet 服务 subprocess.call(["ansible test4 -m shell -a 'systemctl daemon-reload'"],shell=True) subprocess.call(["ansible test4 -m service -a 'name=kubelet state=started'"],shell=True) subprocess.call(["ansible test4 -m service -a 'name=kubelet enabled=yes'"],shell=True) #检查启动结果 subprocess.call(["ansible test4 -m shell -a 'systemctl status kubelet'"],shell=True) #设置集群角色 test4=subprocess.check_output(["kubectl get nodes | grep test4 | awk '{print $1}'"], shell=True) test4=test4.decode('utf8').strip() subprocess.call(['kubectl','label','nodes',test4,'node-role.kubernetes.io/node=']) print("查看csr,如果是Approved,Issued状态，下面这个报错忽略: No resources found error: resource name may not be empty") subprocess.call(["ansible test4 -m shell -a 'kubectl get csr'"],shell=True) subprocess.call(["ansible test4 -m shell -a 'sleep 60s'"],shell=True) def approve_csr(): print("自动 approve CSR 请求") subprocess.call(["time ansible test4 -m copy -a 'src=/k8s/profile/csr-crb.yaml dest=/k8s/profile/csr-crb.yaml force=yes'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'kubectl apply -f /k8s/profile/csr-crb.yaml'"],shell=True) print("No resources found error: resource name may not be empty 这个报错忽略，不影响的，") subprocess.call(["ansible test4 -m shell -a 'sleep 30s'"],shell=True) #等待一段时间(1-10 分钟)，所有节点的 CSR 都被自动 approve；看了下时间，这次刚好等了10分钟 subprocess.call(["ansible test4 -m shell -a 'sleep 300s'"],shell=True) #查看csr subprocess.call(["ansible test4 -m shell -a 'kubectl get csr'"],shell=True) #所有节点均 ready subprocess.call(["ansible test4 -m shell -a 'kubectl get nodes'"],shell=True) #查看kube-controller-manager 为各 node 生成了 kubeconfig 文件和公私钥 subprocess.call(["ansible test4 -m shell -a 'ls -l /etc/kubernetes/kubelet.kubeconfig'"],shell=True) subprocess.call(["ansible test4 -m shell -a 'ls -l /etc/kubernetes/cert/|grep kubelet'"],shell=True) #查看kubelet 提供的 API 接口 subprocess.call(["ansible test4 -m shell -a 'yum install net-tools -y'"],shell=True) subprocess.call(["ansible test4 -m shell -a 'netstat -lnpt|grep kubelet'"],shell=True) def install_kube_proxy(): print("部署 kube-proxy 组件") #创建工作目录和日志目录 subprocess.call(["ansible test4 -m file -a 'path=/var/lib/kube-proxy/ state=directory mode=0777'"], shell=True) subprocess.call(["ansible test4 -m file -a 'path=/var/log/kubernetes/ state=directory mode=0777'"], shell=True) subprocess.call(["ansible test4 -m file -a 'path=/var/log/kubernetes/ owner=k8s group=k8s mode=0777'"], shell=True) #安装依赖包 subprocess.call(["ansible test4 -m shell -a 'yum install -y conntrack ipvsadm ipset jq sysstat curl iptables libseccomp'"], shell=True) #加载 ip_vs 内核模块 subprocess.call(["ansible test4 -m shell -a 'iptables -P FORWARD ACCEPT'"], shell=True) subprocess.call(["time ansible test4 -m copy -a 'src=/k8s/profile/k8s.conf dest=/etc/sysctl.d/k8s.conf force=yes'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'sysctl --system'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'modprobe ip_vs'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'modprobe ip_vs_rr'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'modprobe ip_vs_wrr'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'modprobe ip_vs_sh'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'modprobe nf_conntrack_ipv4'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'lsmod | grep ip_vs'"], shell=True) #创建 kube-proxy 证书和私钥 os.chdir('/root/ssl/') subprocess.call(["cfssl gencert -ca=/etc/kubernetes/cert/ca.pem -ca-key=/etc/kubernetes/cert/ca-key.pem -config=/etc/kubernetes/cert/ca-config.json -profile=kubernetes kube-proxy-csr.json | cfssljson -bare kube-proxy"], shell=True) #将生成的证书和私钥分发到test4节点 subprocess.call(["ansible test4 -m copy -a 'src=/root/ssl/kube-proxy.pem dest=/etc/kubernetes/cert/ force=yes'"], shell=True) subprocess.call(["ansible test4 -m copy -a 'src=/root/ssl/kube-proxy-key.pem dest=/etc/kubernetes/cert/ force=yes'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'chmod +x /etc/kubernetes/cert/'"], shell=True) #创建和分发 kubeconfig 文件 subprocess.call(["kubectl config set-cluster kubernetes --certificate-authority=/etc/kubernetes/cert/ca.pem --embed-certs=true --server=https://192.168.0.235:8443 --kubeconfig=kube-proxy.kubeconfig"], shell=True) subprocess.call(["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"], shell=True) subprocess.call(["kubectl config set-context system:kube-proxy --cluster=kubernetes --user=system:kube-proxy --kubeconfig=kube-proxy.kubeconfig"], shell=True) subprocess.call(["kubectl config use-context system:kube-proxy --kubeconfig=kube-proxy.kubeconfig"], shell=True) subprocess.call(["ansible test4 -m copy -a 'src=/root/ssl/kube-proxy.kubeconfig dest=/etc/kubernetes/ force=yes'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'chmod +x /etc/kubernetes/*'"], shell=True) #创建 kube-proxy 配置文件 subprocess.call(["ansible test4 -m copy -a 'src=/k8s/profile/kube-proxy.config.yaml.template.py dest=/k8s/profile/ force=yes'"], shell=True) subprocess.call(["ansible test4 -m copy -a 'src=/k8s/profile/kube-proxy.config.yaml.py dest=/k8s/profile/ force=yes'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'python /k8s/profile/kube-proxy.config.yaml.py'"],shell=True) #分发kube-proxy二进制文件 subprocess.call(["time ansible test4 -m copy -a 'src=/opt/k8s/bin/kube-proxy dest=/opt/k8s/bin/ force=yes'"], shell=True) subprocess.call(["time ansible test4 -m shell -a 'chmod +x /opt/k8s/bin/kube-proxy'"], shell=True) #创建和分发kube-proxy.service subprocess.call(["ansible test4 -m copy -a 'src=/k8s/profile/kube-proxy.service dest=/etc/systemd/system/kube-proxy.service force=yes'"], shell=True) #启动kube-proxy 服务 subprocess.call(["ansible test4 -m shell -a 'systemctl daemon-reload'"],shell=True) subprocess.call(["ansible test4 -m service -a 'name=kube-proxy state=started'"],shell=True) subprocess.call(["ansible test4 -m service -a 'name=kube-proxy enabled=yes'"],shell=True) #检查 kube-proxy 运行状态 subprocess.call(["time ansible test4 -m shell -a 'systemctl status kube-proxy'"],shell=True) def install_flanneld(): print("部署 flannel 网络") #关闭防火墙 subprocess.call(["ansible test4 -m service -a 'name=firewalld state=stopped'"],shell=True) subprocess.call(["time ansible test4 -m shell -a 'systemctl disable firewalld'"],shell=True) #安装jinja2模块 subprocess.call(["ansible test4 -m shell -a 'pip3 install jinja2'"], shell=True) #通过playbook安装flannel，在playbook中定义了通过kubectl安装flanneld;playbook中定义了安装在test4节点上 subprocess.call(["ansible-playbook /k8s/profile/deploy_flanneld.yaml"], shell=True) #等（1-10）分钟查看flannel pod subprocess.call(["ansible test4 -m shell -a 'sleep 100s'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'kubectl get pod -n kube-system'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'kubectl get nodes'"], shell=True) def install_coredns(): print("安装coredns") print("下面报错忽略，没有影响。这个错误: No package jq available.Error: Nothing to donon-zero return code") subprocess.call(["ansible test4 -m shell -a 'yum install -y jq 2> /dev/null'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'sleep 30s'"], shell=True) #通过playbook安装coredns，在playbook中定义了通过kubectl安装coredns;playbook中定义了安装在test4节点上 subprocess.call(["ansible-playbook /k8s/profile/deploy_coredns.yaml"], shell=True) #等（1-10）分钟查看coredns pod subprocess.call(["ansible test4 -m shell -a 'sleep 60s'"], shell=True) subprocess.call(["ansible test4 -m shell -a 'kubectl get pod -n kube-system'"], shell=True) #测试coredns请参照https://www.cnblogs.com/effortsing/p/10312081.html 最后部分 def func_list(): #install_cfssl() #create_root_ca() #distribute_kubectl() #create_admin_ca() #create_admin_kubeconfig() #install_etcd_cluster() #install_haproxy() #install_keepalived() #kube_apiserver() #kube_controller_manager() #install_kube_scheduler() #下面开始单独安装worker节点，worker节点地址：192.168.0.94 #environmental_configuration() #install_docker() #install_kubelet() #approve_csr() #install_kube_proxy() #install_flanneld() #install_coredns() def main(): func_list() if __name__ == '__main__': main()