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本文需要一些知识储备，有一定的自学能力，有一定的自行解决问题的能力，不然直接看的话压力会比较大，建议有一定知识储备后作为提升来学
本文的前置条件是会docker，还要有两台以上的虚拟机，还不了解的可以先看我前一篇文章
centos8安装docker运行java文件_centos8 docker安装java8-CSDN博客
本文是我在完整搭建完整个系统后再这里的，所以有些步骤和当时排查的问题可能会有些遗忘，请谅解，有问题的部分可以在评论提问，我会回答并更新到文章中
本文涉及的技术有
k8s，flannel，nfs，mysql，nginx
nacos，sentinel，seata这几个是springcloud-alibaba的，如果不是部这种项目，这3个的部分可以跳过
我这使用的是springboot 2.7.18、spring-cloud 2021.0.9、spring-cloud-alibaba 2021.0.5.0、nacos 2.2.3、sentinel 1.8.6、seata1.6.1，如果你的版本和我不一样，自行去spring-cloud-alibaba官网查下你自己匹配的版本，下面部署的时候也对应的记得修改版本，不要就直接抄，版本不对可能会导致项目起不来
1. 安装k8s
我这弄的两台虚拟机的配置是
| 服务器名 | ip | 配置 |
| k8smaster | 192.168.233.20 | 2G内存20G硬盘 |
| k8snode1 | 192.168.233.21 | 8G内存20G硬盘 |
node1的内存比较高是因为原本是设置2G内存，在部署到nacos的时候node1就因为内存不够而卡死了，然后加到了4G，然后我springcloud-alibaba部署了7个服务，又卡死了，所以加到了8G内存，现在完整部署完，node1实际使用内存4.7G，各位可以看自己情况调整
服务器名称可以通过以下命令进行修改
hostnamectl set-hostname xxxx1.1 关闭防火墙、selinux、swap
master服务器和node服务器都要执行
关闭防火墙，k8s会默认使用iptables做访问限制，防火墙开着可能会阻止k8s集群中各节点的互相访问
systemctl stop firewalld && systemctl disable firewalld
关闭selinux
SELinux是一种安全子系统，它提供访问控制机制。在Kubernetes集群中，某些节点可能运行在CPU或内存受限的环境中，或者需要运行特定的安全策略。在这些情况下，可能需要配置SELinux以允许Kubernetes正常工作。但是，完全关闭SELinux（设置为permissive或disabled模式）通常用于简化安全策略，以避免潜在的安全问题。
setenforce 0
sed -i 's/^SELINUX=enforcing$/SELINUX=permissive/' /etc/selinux/config
关闭swap
swap是linux系统的虚拟内存，k8s觉得虚拟内存会影响他的执行效率，所以k8s启动时会检测swap是否关闭，没关不让启动，但是启动参数里可以加参数在启动时忽略判断swap是否关闭，有兴趣可以自己查下，我这介绍按k8s关闭swap的搭建方法
sed -ri 's/.*swap.*/#&/' /etc/fstab1.2 安装docker
master服务器和node服务器都要执行
centos8安装docker运行java文件_centos8 docker安装java8-CSDN博客
1.3 安装 kubelet、kubeadm、kubectl
master服务器和node服务器都要执行
kubeadm：搭建kube集群的东西
kubelet：kube中和docker交互创建对应容器的服务，旧版的kube-apiserver、kube-proxy、kube-scheduler等，那些的都会在kubelet里自动创建
kubectl：kube的控制台
我这使用的是1.18.0版本，如有需要自行修改
yum install -y kubelet-1.18.0 kubeadm-1.18.0 kubectl-1.18.01.4 创建master节点
仅master节点执行
执行前请确保kubelet服务已经启动完毕，以下命令能查询kubelet的状态
systemctl status kubelet kubelet.service - kubelet: The Kubernetes Node AgentLoaded: loaded (/usr/lib/systemd/system/kubelet.service; enabled; vendor preset: disabled)Drop-In: /usr/lib/systemd/system/kubelet.service.d└─10-kubeadm.confActive: active (running) since Mon 2024-09-09 17:39:32 CST; 1 day 21h agoDocs: https://kubernetes.io/docs/Main PID: 798 (kubelet)Tasks: 19 (limit: 11363)Memory: 77.5MCGroup: /system.slice/kubelet.service└─798 /usr/bin/kubelet --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --kubeconfig=/etc/kubernetes/kubelet.conf --config=/var/lib/kubelet/config.yaml --cgroup-driver>Sep 11 15:31:10 k8smaster kubelet[798]: E0911 15:31:10.396187 798 summary_sys_containers.go:47] Failed to get system container stats for "/system.slice/docker.service": failed to get cgro>
Sep 11 15:31:20 k8smaster kubelet[798]: E0911 15:31:20.420096 798 summary_sys_containers.go:47] Failed to get system container stats for "/system.slice/docker.service": failed to get cgro>以下命令查看docker中是否创建好kube基础依赖的容器
docker ps这里随便cp了2个出来，有看到这俩，或者类似这俩的，应该就行了
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
d8cfa18ec556 registry.aliyuncs.com/google_containers/pause:3.2 "/pause" 46 hours ago Up 46 hours k8s_POD_kube-apiserver-k8smaster_kube-system_24d2e38ac3ee7dbd192b59ae301f2958_1
59ca2ec352a8 43940c34f24f "/usr/local/bin/kube…" 46 hours ago Up 46 hours k8s_kube-proxy_kube-proxy-jvp78_kube-system_2c89a685-e9d1-490a-b945-13a38eca665d_1apiserver-advertise-address：当前服务器的静态ip，装好docker和kubelet，kubelet会自动在docker里运行kube-apiserver所以填当前服务器地址
倒数两行是service和pod的ip网段，最好不要修改，这个网段和flannel的默认值是匹配的，如果修改到时候flannel也要修改
kubeadm init \
--v=5 \
--apiserver-advertise-address=192.168.233.20 \
--image-repository=registry.aliyuncs.com/google_containers \
--kubernetes-version=v1.18.0 \
--service-cidr=10.96.0.0/12 \
--pod-network-cidr=10.244.0.0/16
输出以下内容master节点就算搭建成功了
失败看1.6
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/.kubesudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/configsudo chown $(id -u):$(id -g) $HOME/.kube/configYou 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/Then you can join any number of worker nodes by running the following on each as root:kubeadm join 192.168.233.20:6443 --token 1aczra.6ttwnx7vkcvfvr26 \--discovery-token-ca-cert-hash sha256:85feeb8ca8b4a9161446732118ca87f5f995bcdcf3f13d4711cf9aff4d50360e然后按照上面的提示，在master节点上执行这三行的内容，这是赋予本机的kubectl操作权限
mkdir -p $HOME/.kubesudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/configsudo chown $(id -u):$(id -g) $HOME/.kube/config1.5 node节点加入集群
仅node节点执行
在master节点搭建完的时候，最下面会输出这段代码，直接复制到node节点上执行就能作为node节点加入到集群
kubeadm join 192.168.233.20:6443 --token 1aczra.6ttwnx7vkcvfvr26 \--discovery-token-ca-cert-hash sha256:85feeb8ca8b4a9161446732118ca87f5f995bcdcf3f13d4711cf9aff4d50360e如果没记下来忘了，那么在master服务器上输入以下命令，可以再次输出加入k8s集群的代码
kubeadm token create --print-join-command1.6 master节点创建失败的情况
仅master节点执行
先去排查kubelet服务是否启动成功，对应的docker容器是否创建了，1.4有查看的方法，根据报错信息去网上查解决方法
解决kubelet的问题后，要重新使用kubeadm init之前，先要重置kubeadm并删除上次init产生的垃圾文件
重置kubeadm
kubeadm reset删除垃圾文件
rm -rf /etc/kubernetes/*
rm -rf $HOME/.kube/*1.7 k8s部署flannel
仅master节点执行
到这一步，使用以下命令可以看到，我们的master节点还是处于NotReady状态，这时需要部署flannel来自动为创建的service和pod分配ip
kubectl get node我们直接下载k8s部署flannel的yml文件，然后用kubectl create命令执行
wget https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
kubectl create -f kube-flannel.yml我下的这版flannel会单独创建个namespace运行他的内容，用以下命令可以查看flannel pod的创建情况，创建完了后，再用kubectl get node 此时master节点的状态应该就变成Ready了
kubectl get pods -n kube-flannel2. 部署nfs
nfs是文件共享服务，docker容器运行时，我们常把一些容器中的目录映射到宿主机的目录上，方便修改配置文件、查看日志等，但是使用了k8s我们可能会有很多的node节点，我们去每个服务器上做配置、看日志非常不方便，所以就用到了nfs文件共享服务，我们可以把所有node节点的容器目录映射到文件共享服务器上，这样我们修改配置文件或查看日志等操作，就可以在文件共享服务器上统一操作了，不用到各个node服务器上操作
2.1 搭建nfs服务
nfs服务搭建非常简单，网上普遍是直接在宿主机上搭建，我这使用的是用docker搭建的方法，你们不想用docker也能搜搜直接在宿主机上搭建的方法，也就两三步的事
nfs服务可以搭建在单独的服务器上，我这为了省事直接搭在master服务器上
下载nfs镜像
docker pull itsthenetwork/nfs-server-alpine运行nfs容器，这是24年9月的运行方式，旧版的共享目录的全局变量不是NFS_EXPORTED_DIR是SHARE_DIR_NAME，docker ps 如果看到容器一直在重启，可以用docker logs nfs-server查看容器启动失败的原因，如果是缺少全局变量会直接把缺少的参数名输出出来，看参数名推测下该参数的用处，加在启动命令里就好了
docker run --privileged -d --name nfs-server --restart always -v /data/nfs:/nfs/shared -p 2049:2049 -e NFS_EXPORTED_DIR="/nfs/shared" itsthenetwork/nfs-server-alpine2.2 搭建k8s nfs-client-provisioner
仅master节点执行
k8s创建statefulsets类型的服务时需要提供pvc作为存储空间，nfs-client-provisioner可以通过自动在创建映射到nfs服务的pvc供statefulsets使用
kubectl create -f nfs-deployment.yamlnfs-deployment.yaml
apiVersion: v1
kind: ServiceAccount
metadata:name: nfs-client-provisioner
---
kind: Deployment
apiVersion: apps/v1
metadata:name: nfs-client-provisioner
spec:replicas: 1strategy:type: Recreateselector:matchLabels:app: nfs-client-provisionertemplate:metadata:labels:app: nfs-client-provisionerspec:serviceAccount: nfs-client-provisionercontainers:- name: nfs-client-provisionerimage: quay.io/external_storage/nfs-client-provisioner:latestvolumeMounts:- name: nfs-client-rootmountPath: /persistentvolumesenv:- name: PROVISIONER_NAMEvalue: fuseim.pri/ifs # 可改后面会用到- name: NFS_SERVERvalue: 192.168.233.20 # 搭建了nfs的服务器ip- name: NFS_PATHvalue: /nfs-client-provisioner # 存储pvc数据的主目录volumes:- name: nfs-client-rootnfs:server: 192.168.233.20 # 搭建了nfs的服务器ippath: /nfs-client-provisioner # 存储pvc数据的主目录
kubectl create -f nfs-class.yamlnfs-class.yaml
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:name: managed-nfs-storage
provisioner: fuseim.pri/ifs # deployment的PROVISIONER_NAME
parameters:archiveOnDelete: "false"kubectl create -f nfs-rbac.yamlnfs-rbac.yaml
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:name: nfs-client-provisioner-runner
rules:
- apiGroups: [""]resources: ["persistentvolumes"]verbs: ["get", "list", "watch", "create", "delete"]
- apiGroups: [""]resources: ["persistentvolumeclaims"]verbs: ["get", "list", "watch", "update"]
- apiGroups: [""]resources: ["endpoints"]verbs: ["get", "list", "watch", "create", "update", "patch"]
- apiGroups: ["storage.k8s.io"]resources: ["storageclasses"]verbs: ["get", "list", "watch"]
- apiGroups: [""]resources: ["events"]verbs: ["create", "update", "patch"]
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:name: run-nfs-client-provisioner
subjects:
- kind: ServiceAccountname: nfs-client-provisionernamespace: default
roleRef:kind: ClusterRolename: nfs-client-provisioner-runnerapiGroup: rbac.authorization.k8s.io
---
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:name: leader-locking-nfs-client-provisioner
rules:
- apiGroups: [""]resources: ["endpoints"]verbs: ["get", "list", "watch", "create", "update", "patch"]
---
kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:name: leader-locking-nfs-client-provisioner
subjects:
- kind: ServiceAccountname: nfs-client-provisioner# replace with namespace where provisioner is deployednamespace: default
roleRef:kind: Rolename: leader-locking-nfs-client-provisionerapiGroup: rbac.authorization.k8s.io3. 部署mysql
3.1 k8s部署mysql8
仅master节点执行
kubectl create -f mysql-pro.ymlmysql-pro.yml
apiVersion: v1
kind: ConfigMap
metadata:name: mysql8-cnf
data:my.cnf: |[mysqld]# mysql的配置文件# Remove leading # and set to the amount of RAM for the most important data# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.# innodb_buffer_pool_size = 128M## Remove leading # to turn on a very important data integrity option: logging# changes to the binary log between backups.# log_bin## Remove leading # to set options mainly useful for reporting servers.# The server defaults are faster for transactions and fast SELECTs.# Adjust sizes as needed, experiment to find the optimal values.# join_buffer_size = 128M# sort_buffer_size = 2M# read_rnd_buffer_size = 2Mhost-cache-size=0skip-name-resolvedatadir=/var/lib/mysqlsocket=/var/run/mysqld/mysqld.socksecure-file-priv=/var/lib/mysql-filesuser=mysqlmysql_native_password=ONpid-file=/var/run/mysqld/mysqld.pid[client]socket=/var/run/mysqld/mysqld.sock!includedir /etc/mysql/conf.d/
---
apiVersion: v1
kind: ReplicationController
metadata:name: mysql-prolabels:name: mysql-pro
spec:replicas: 1selector:name: mysql-protemplate:metadata:labels:name: mysql-prospec:containers:- name: mysql-proimage: mysql:8ports:- containerPort: 3306volumeMounts:- name: mysql-datamountPath: /var/lib/mysql # 映射mysql目录实现持久化- name: mysql-mycnfmountPath: /etc/my.cnf # 映射配置文件subPath: "my.cnf"env:- name: MYSQL_ROOT_PASSWORDvalue: "123456" # root的密码
# 如果只创建1个数据库1个mysql账号，可以配置这几个参数，比较省事，如果按我的步骤做的话，删掉
# - name: MYSQL_DATABASE
# value: "demo2"
# - name: MYSQL_USER
# value: "demo2"
# - name: MYSQL_PASSWORD
# value: "123456"volumes:- name: mysql-data # 和volumeMounts的name要对应nfs:server: 192.168.233.20 # mysql数据储存的映射，用的nfs服务器，通过nfs服务器的映射，记得都要先创建好对应的目录path: /data/mysql-pro- name: mysql-mycnfconfigMap:name: mysql8-cnf # 配置文件用configMap的形式映射，就是最上面那个configMap
---
apiVersion: v1
kind: Service
metadata:name: mysql-prolabels:name: mysql-pro
spec:ports:- port: 3306targetPort: 3306nodePort: 30004 # 仅type: NodePort才加，范围是30000-32767，和别的service不要重复selector:name: mysql-protype: NodePort # 默认是ClusterIP，集群外无法访问，NodePort会提供外网访问的端口3.2 创建nacos要用的数据库
仅master节点执行
nacos的储存方式可以使用file，我这使用的是数据库储存，以此为例，你们能自己创建需要的mysql账号、数据库、还有赋权
mysql创建好后用以下命令查看mysql pod的名字
kubectl get pods显示的结果
NAME READY STATUS RESTARTS AGE
mysql-pro-twkc9 1/1 Running 2 2d4h
nfs-client-provisioner-5864f57757-vc9g4 1/1 Running 2 2d4h
进入到mysql容器中
kubectl exec -it mysql-pro-twkc9 /bin/bash进去后左侧会变成bash-5.1#
输入mysql -uroot -p 回车，然后输入3.1yml里配置的root用户的密码，就能进到mysql了
然后创建数据库，创建数据库用户，给数据库赋予数据库权限，这些就是mysql的一些基础操作了，我就不过多叙述了，其中要注意的是，我用的镜像是mysql8的默认密码使用的是caching_sha2_password进行加密，会导致navicat连不上mysql，所以创建用户时指定密码使用mysql_native_password类型，这步操作完就可以正常使用navicat连进去了，剩下的操作就可以在你熟悉的navicat里进行了
创建nacos数据库所需的表
/* https://github.com/alibaba/nacos/blob/master/distribution/conf/nacos-mysql.sql */CREATE TABLE IF NOT EXISTS `config_info` (`id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT 'id',`data_id` varchar(255) NOT NULL COMMENT 'data_id',`group_id` varchar(255) DEFAULT NULL,`content` longtext NOT NULL COMMENT 'content',`md5` varchar(32) DEFAULT NULL COMMENT 'md5',`gmt_create` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',`gmt_modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '修改时间',`src_user` text COMMENT 'source user',`src_ip` varchar(50) DEFAULT NULL COMMENT 'source ip',`app_name` varchar(128) DEFAULT NULL,`tenant_id` varchar(128) DEFAULT '' COMMENT '租户字段',`c_desc` varchar(256) DEFAULT NULL,`c_use` varchar(64) DEFAULT NULL,`effect` varchar(64) DEFAULT NULL,`type` varchar(64) DEFAULT NULL,`c_schema` text,PRIMARY KEY (`id`),UNIQUE KEY `uk_configinfo_datagrouptenant` (`data_id`,`group_id`,`tenant_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='config_info';CREATE TABLE IF NOT EXISTS `config_info_aggr` (`id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT 'id',`data_id` varchar(255) NOT NULL COMMENT 'data_id',`group_id` varchar(255) NOT NULL COMMENT 'group_id',`datum_id` varchar(255) NOT NULL COMMENT 'datum_id',`content` longtext NOT NULL COMMENT '内容',`gmt_modified` datetime NOT NULL COMMENT '修改时间',`app_name` varchar(128) DEFAULT NULL,`tenant_id` varchar(128) DEFAULT '' COMMENT '租户字段',PRIMARY KEY (`id`),UNIQUE KEY `uk_configinfoaggr_datagrouptenantdatum` (`data_id`,`group_id`,`tenant_id`,`datum_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='增加租户字段';CREATE TABLE IF NOT EXISTS `config_info_beta` (`id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT 'id',`data_id` varchar(255) NOT NULL COMMENT 'data_id',`group_id` varchar(128) NOT NULL COMMENT 'group_id',`app_name` varchar(128) DEFAULT NULL COMMENT 'app_name',`content` longtext NOT NULL COMMENT 'content',`beta_ips` varchar(1024) DEFAULT NULL COMMENT 'betaIps',`md5` varchar(32) DEFAULT NULL COMMENT 'md5',`gmt_create` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',`gmt_modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '修改时间',`src_user` text COMMENT 'source user',`src_ip` varchar(50) DEFAULT NULL COMMENT 'source ip',`tenant_id` varchar(128) DEFAULT '' COMMENT '租户字段',PRIMARY KEY (`id`),UNIQUE KEY `uk_configinfobeta_datagrouptenant` (`data_id`,`group_id`,`tenant_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='config_info_beta';CREATE TABLE IF NOT EXISTS `config_info_tag` (`id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT 'id',`data_id` varchar(255) NOT NULL COMMENT 'data_id',`group_id` varchar(128) NOT NULL COMMENT 'group_id',`tenant_id` varchar(128) DEFAULT '' COMMENT 'tenant_id',`tag_id` varchar(128) NOT NULL COMMENT 'tag_id',`app_name` varchar(128) DEFAULT NULL COMMENT 'app_name',`content` longtext NOT NULL COMMENT 'content',`md5` varchar(32) DEFAULT NULL COMMENT 'md5',`gmt_create` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',`gmt_modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '修改时间',`src_user` text COMMENT 'source user',`src_ip` varchar(50) DEFAULT NULL COMMENT 'source ip',PRIMARY KEY (`id`),UNIQUE KEY `uk_configinfotag_datagrouptenanttag` (`data_id`,`group_id`,`tenant_id`,`tag_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='config_info_tag';CREATE TABLE IF NOT EXISTS `config_tags_relation` (`id` bigint(20) NOT NULL COMMENT 'id',`tag_name` varchar(128) NOT NULL COMMENT 'tag_name',`tag_type` varchar(64) DEFAULT NULL COMMENT 'tag_type',`data_id` varchar(255) NOT NULL COMMENT 'data_id',`group_id` varchar(128) NOT NULL COMMENT 'group_id',`tenant_id` varchar(128) DEFAULT '' COMMENT 'tenant_id',`nid` bigint(20) NOT NULL AUTO_INCREMENT,PRIMARY KEY (`nid`),UNIQUE KEY `uk_configtagrelation_configidtag` (`id`,`tag_name`,`tag_type`),KEY `idx_tenant_id` (`tenant_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='config_tag_relation';CREATE TABLE IF NOT EXISTS `group_capacity` (`id` bigint(20) unsigned NOT NULL AUTO_INCREMENT COMMENT '主键ID',`group_id` varchar(128) NOT NULL DEFAULT '' COMMENT 'Group ID，空字符表示整个集群',`quota` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '配额，0表示使用默认值',`usage` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '使用量',`max_size` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '单个配置大小上限，单位为字节，0表示使用默认值',`max_aggr_count` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '聚合子配置最大个数，，0表示使用默认值',`max_aggr_size` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '单个聚合数据的子配置大小上限，单位为字节，0表示使用默认值',`max_history_count` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '最大变更历史数量',`gmt_create` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',`gmt_modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '修改时间',PRIMARY KEY (`id`),UNIQUE KEY `uk_group_id` (`group_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='集群、各Group容量信息表';CREATE TABLE IF NOT EXISTS `his_config_info` (`id` bigint(64) unsigned NOT NULL,`nid` bigint(20) unsigned NOT NULL AUTO_INCREMENT,`data_id` varchar(255) NOT NULL,`group_id` varchar(128) NOT NULL,`app_name` varchar(128) DEFAULT NULL COMMENT 'app_name',`content` longtext NOT NULL,`md5` varchar(32) DEFAULT NULL,`gmt_create` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,`gmt_modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,`src_user` text,`src_ip` varchar(50) DEFAULT NULL,`op_type` char(10) DEFAULT NULL,`tenant_id` varchar(128) DEFAULT '' COMMENT '租户字段',PRIMARY KEY (`nid`),KEY `idx_gmt_create` (`gmt_create`),KEY `idx_gmt_modified` (`gmt_modified`),KEY `idx_did` (`data_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='多租户改造';CREATE TABLE IF NOT EXISTS `tenant_capacity` (`id` bigint(20) unsigned NOT NULL AUTO_INCREMENT COMMENT '主键ID',`tenant_id` varchar(128) NOT NULL DEFAULT '' COMMENT 'Tenant ID',`quota` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '配额，0表示使用默认值',`usage` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '使用量',`max_size` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '单个配置大小上限，单位为字节，0表示使用默认值',`max_aggr_count` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '聚合子配置最大个数',`max_aggr_size` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '单个聚合数据的子配置大小上限，单位为字节，0表示使用默认值',`max_history_count` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '最大变更历史数量',`gmt_create` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',`gmt_modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '修改时间',PRIMARY KEY (`id`),UNIQUE KEY `uk_tenant_id` (`tenant_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='租户容量信息表';CREATE TABLE IF NOT EXISTS `tenant_info` (`id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT 'id',`kp` varchar(128) NOT NULL COMMENT 'kp',`tenant_id` varchar(128) default '' COMMENT 'tenant_id',`tenant_name` varchar(128) default '' COMMENT 'tenant_name',`tenant_desc` varchar(256) DEFAULT NULL COMMENT 'tenant_desc',`create_source` varchar(32) DEFAULT NULL COMMENT 'create_source',`gmt_create` bigint(20) NOT NULL COMMENT '创建时间',`gmt_modified` bigint(20) NOT NULL COMMENT '修改时间',PRIMARY KEY (`id`),UNIQUE KEY `uk_tenant_info_kptenantid` (`kp`,`tenant_id`),KEY `idx_tenant_id` (`tenant_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='tenant_info';CREATE TABLE IF NOT EXISTS `users` (`username` varchar(50) NOT NULL PRIMARY KEY,`password` varchar(500) NOT NULL,`enabled` boolean NOT NULL
);CREATE TABLE IF NOT EXISTS `roles` (`username` varchar(50) NOT NULL,`role` varchar(50) NOT NULL,UNIQUE INDEX `idx_user_role` (`username` ASC, `role` ASC) USING BTREE
);CREATE TABLE IF NOT EXISTS `permissions` (`role` varchar(50) NOT NULL,`resource` varchar(255) NOT NULL,`action` varchar(8) NOT NULL,UNIQUE INDEX `uk_role_permission` (`role`,`resource`,`action`) USING BTREE
);4. 部署nacos
Kubernetes Nacos | Nacos 官网 这里是官网api
4.1 下载nacos
仅master节点执行
下载nacos项目，部署所需的yml文件在 ./deploy里，我这会把yml文件的内容发出来，不下也行
git clone https://github.com/nacos-group/nacos-k8s.git根据官网的内容，我这选用的是nfs+mysql的部署方式，nfs和mysql在前面都已经搭建好了
4.2 k8s部署nacos
仅master节点执行
kubectl create -f nacos-pvc-nfs.yamlnacos-pvc-nfs.yaml
# 请阅读Wiki文章
# https://github.com/nacos-group/nacos-k8s/wiki/%E4%BD%BF%E7%94%A8peerfinder%E6%89%A9%E5%AE%B9%E6%8F%92%E4%BB%B6
---
apiVersion: v1 # service不用改
kind: Service
metadata:name: nacos-headlesslabels:app: nacos
spec:publishNotReadyAddresses: true ports:- port: 8848name: servertargetPort: 8848- port: 9848name: client-rpctargetPort: 9848- port: 9849name: raft-rpctargetPort: 9849## 兼容1.4.x版本的选举端口- port: 7848name: old-raft-rpctargetPort: 7848clusterIP: Noneselector:app: nacos
---
apiVersion: v1
kind: ConfigMap
metadata:name: nacos-cm
data:mysql.host: "mysql-pro" # 我们上面部署mysql的service的namemysql.db.name: "nacos" # 3.2里创建的数据库名、账号密码mysql.port: "3306" # mysql的service的端口mysql.user: "nacosuser"mysql.password: "123456"
---
apiVersion: apps/v1
kind: StatefulSet
metadata:name: nacos
spec:podManagementPolicy: ParallelserviceName: nacos-headlessreplicas: 3template:metadata:labels:app: nacosannotations:pod.alpha.kubernetes.io/initialized: "true"spec:affinity:podAntiAffinity:requiredDuringSchedulingIgnoredDuringExecution:- labelSelector:matchExpressions:- key: "app"operator: Invalues:- nacostopologyKey: "kubernetes.io/hostname"serviceAccountName: nfs-client-provisionerinitContainers:- name: peer-finder-plugin-installimage: nacos/nacos-peer-finder-plugin:1.1imagePullPolicy: IfNotPresentvolumeMounts:- mountPath: /home/nacos/plugins/peer-findername: datasubPath: peer-findercontainers:- name: nacosimagePullPolicy: IfNotPresentimage: nacos/nacos-server:2.2.3resources:requests:memory: "2Gi"cpu: "500m"ports:- containerPort: 8848name: client-port- containerPort: 9848name: client-rpc- containerPort: 9849name: raft-rpc- containerPort: 7848name: old-raft-rpcenv:- name: NACOS_REPLICASvalue: "3"- name: SERVICE_NAMEvalue: "nacos-headless"- name: DOMAIN_NAMEvalue: "cluster.local"- name: POD_NAMESPACEvalueFrom:fieldRef:apiVersion: v1fieldPath: metadata.namespace- name: MYSQL_SERVICE_HOSTvalueFrom:configMapKeyRef:name: nacos-cmkey: mysql.host- name: MYSQL_SERVICE_DB_NAMEvalueFrom:configMapKeyRef:name: nacos-cmkey: mysql.db.name- name: MYSQL_SERVICE_PORTvalueFrom:configMapKeyRef:name: nacos-cmkey: mysql.port- name: MYSQL_SERVICE_USERvalueFrom:configMapKeyRef:name: nacos-cmkey: mysql.user- name: MYSQL_SERVICE_PASSWORDvalueFrom:configMapKeyRef:name: nacos-cmkey: mysql.password- name: SPRING_DATASOURCE_PLATFORMvalue: "mysql"- name: NACOS_SERVER_PORTvalue: "8848"- name: NACOS_APPLICATION_PORTvalue: "8848"- name: PREFER_HOST_MODEvalue: "hostname"volumeMounts:- name: datamountPath: /home/nacos/plugins/peer-findersubPath: peer-finder- name: datamountPath: /home/nacos/datasubPath: data- name: datamountPath: /home/nacos/logssubPath: logsvolumeClaimTemplates:- metadata:name: dataannotations:volume.beta.kubernetes.io/storage-class: "managed-nfs-storage" # 创建nfs-client-provisioner时其中有一步创建的class的名称，nfs-client-provisioner会自动创建pvc上面映射的3个目录都会自动创建spec:accessModes: [ "ReadWriteMany" ]resources:requests:storage: 20Giselector:matchLabels:app: nacos
运行完后虽然我们replicas设置了3个，但是我们只有一个节点，nacos的官方默认配置是需要0.5个cpu核心2G内存，我的虚拟机资源没配那么多，所以实际只会创建1个nacos pod，其他为pending状态
4.3 通过nginx代理nacos控制台
仅master节点执行
nginx我打算用deployment创建，先在nfs共享目录下创建需要用到的目录，我这是/data/nfs你们进到你们的nfs目录下
mkdir nginx
mkdir nginx/conf
mkdir nginx/html在nginx/conf里先准备好nginx的配置文件nginx.conf，mime.type随便下个nginx都有，你们自己拷下，文章已经够长了，没用的尽量不发，随便下个nginx把mine.type也拷到nginx/conf中
nginx.conf
worker_processes 1;events {worker_connections 1024;
}http {include mime.types;default_type application/octet-stream;sendfile on;keepalive_timeout 65;#gzip on;server {listen 80;server_name localhost;location /nacos {proxy_pass http://nacos-headless:8848; # nacos service的名字}location / {root html;index index.html index.htm; # 预留部署前端项目用，容器中的html文件夹我会映射到nfs上的nginx/html，前端项目可以直接放在这个文件夹中}error_page 500 502 503 504 /50x.html;location = /50x.html {root html;}}}
准备好后，就可以部署k8s的nginx了，用deployment的方式部署，使用nodePort service对外开放服务
kubectl create -f kube-nginx.yamlkube-nginx.yaml
apiVersion: apps/v1
kind: Deployment
metadata:name: nginx-deployment
spec:replicas: 2selector:matchLabels:app: nginxtemplate:metadata:labels:app: nginxspec:containers:- name: nginximage: nginx:1.20.2 # 使用nginx镜像的1.20.2版本ports:- containerPort: 80 # 容器开放80接口volumeMounts:- name: web-nginx-configmountPath: /etc/nginx- name: web-nginx-frontmountPath: /usr/share/nginx/htmlvolumes:- name: web-nginx-confignfs: server: 192.168.233.20path: /nginx/conf- name: web-nginx-frontnfs: server: 192.168.233.20path: /nginx/html---
apiVersion: v1
kind: Service
metadata:name: nginx-service
spec:selector:app: nginxports:- port: 80 #service提供的虚拟端口,用于映射pod中容器的真实端口nodePort: 30001 # 集群对外开放的接口protocol: TCPname: nginx-in #端口的名称,用于释义targetPort: 80 #容器对外暴露的端口,如果没有指定targetPort,则默认targetPort与port相同type: NodePort # 外部访问的负载均衡器方式
nginx部署成功后，外部就能通过ip和端口访问到nacos的前端了
http://192.168.233.20:30001/nacos/index.html或
http://192.168.233.21:30001/nacos/index.html
5. 部署seata
5.1 创建seata数据库
仅master节点执行
通过3.2的方法创建seata数据库、seata账号并授权，下面5.2里的configMap里数据库名还有账号密码记得改
弄好后，用navicat执行sql语句，seata语句库执行下面的语句
-- -------------------------------- The script used when storeMode is 'db' --------------------------------
-- the table to store GlobalSession data
CREATE TABLE IF NOT EXISTS `global_table`
(`xid` VARCHAR(128) NOT NULL,`transaction_id` BIGINT,`status` TINYINT NOT NULL,`application_id` VARCHAR(32),`transaction_service_group` VARCHAR(32),`transaction_name` VARCHAR(128),`timeout` INT,`begin_time` BIGINT,`application_data` VARCHAR(2000),`gmt_create` DATETIME,`gmt_modified` DATETIME,PRIMARY KEY (`xid`),KEY `idx_status_gmt_modified` (`status` , `gmt_modified`),KEY `idx_transaction_id` (`transaction_id`)
) ENGINE = InnoDBDEFAULT CHARSET = utf8mb4;-- the table to store BranchSession data
CREATE TABLE IF NOT EXISTS `branch_table`
(`branch_id` BIGINT NOT NULL,`xid` VARCHAR(128) NOT NULL,`transaction_id` BIGINT,`resource_group_id` VARCHAR(32),`resource_id` VARCHAR(256),`branch_type` VARCHAR(8),`status` TINYINT,`client_id` VARCHAR(64),`application_data` VARCHAR(2000),`gmt_create` DATETIME(6),`gmt_modified` DATETIME(6),PRIMARY KEY (`branch_id`),KEY `idx_xid` (`xid`)
) ENGINE = InnoDBDEFAULT CHARSET = utf8mb4;-- the table to store lock data
CREATE TABLE IF NOT EXISTS `lock_table`
(`row_key` VARCHAR(128) NOT NULL,`xid` VARCHAR(128),`transaction_id` BIGINT,`branch_id` BIGINT NOT NULL,`resource_id` VARCHAR(256),`table_name` VARCHAR(32),`pk` VARCHAR(36),`status` TINYINT NOT NULL DEFAULT '0' COMMENT '0:locked ,1:rollbacking',`gmt_create` DATETIME,`gmt_modified` DATETIME,PRIMARY KEY (`row_key`),KEY `idx_status` (`status`),KEY `idx_branch_id` (`branch_id`),KEY `idx_xid` (`xid`)
) ENGINE = InnoDBDEFAULT CHARSET = utf8mb4;CREATE TABLE IF NOT EXISTS `distributed_lock`
(`lock_key` CHAR(20) NOT NULL,`lock_value` VARCHAR(20) NOT NULL,`expire` BIGINT,primary key (`lock_key`)
) ENGINE = InnoDBDEFAULT CHARSET = utf8mb4;INSERT INTO `distributed_lock` (lock_key, lock_value, expire) VALUES ('AsyncCommitting', ' ', 0);
INSERT INTO `distributed_lock` (lock_key, lock_value, expire) VALUES ('RetryCommitting', ' ', 0);
INSERT INTO `distributed_lock` (lock_key, lock_value, expire) VALUES ('RetryRollbacking', ' ', 0);
INSERT INTO `distributed_lock` (lock_key, lock_value, expire) VALUES ('TxTimeoutCheck', ' ', 0);连接seata的spring cloud服务，执行以下语句
CREATE TABLE `undo_log` (`branch_id` bigint NOT NULL COMMENT 'branch transaction id',`xid` varchar(128) NOT NULL COMMENT 'global transaction id',`context` varchar(128) NOT NULL COMMENT 'undo_log context,such as serialization',`rollback_info` longblob NOT NULL COMMENT 'rollback info',`log_status` int NOT NULL COMMENT '0:normal status,1:defense status',`log_created` datetime(6) NOT NULL COMMENT 'create datetime',`log_modified` datetime(6) NOT NULL COMMENT 'modify datetime',UNIQUE KEY `ux_undo_log` (`xid`,`branch_id`),KEY `ix_log_created` (`log_created`)
) ENGINE=InnoDB COMMENT='AT transaction mode undo table';5.2 k8s部署seata
仅master节点执行
我这seata用at模式部署，注册中心、配置中心用nacos，存储方式用的mysql
kubectl create -f kube-seata.ymlkube-seata.yml
apiVersion: v1
kind: ConfigMap
metadata:name: seata-server-confignamespace: default
data:application.yml: |server:port: 7091spring:application:name: seata-serverlogging:config: classpath:logback-spring.xmlfile:path: ${user.home}/logs/seataextend:logstash-appender:destination: 127.0.0.1:4560kafka-appender:bootstrap-servers: 127.0.0.1:9092topic: logback_to_logstashconsole:user:username: seatapassword: seataseata:config:# support: nacos, consul, apollo, zk, etcd3type: nacosnacos:server-addr: nacos-headless:8848 # nacos service的名字namespace:group: SEATA_GROUPusername:password:context-path:registry:# support: nacos, eureka, redis, zk, consul, etcd3, sofatype: nacosnacos:application: seata-serverserver-addr: nacos-headless:8848group: SEATA_GROUPnamespace:cluster: defaultusername:password:context-path:store:# support: file 、 db 、 redismode: dbdb:datasource: druiddb-type: mysqldriver-class-name: com.mysql.cj.jdbc.Driverurl: jdbc:mysql://mysql-pro:3306/seata?rewriteBatchedStatements=true # mysql service的名字user: demo2password: 123456min-conn: 10max-conn: 100global-table: global_tablebranch-table: branch_tablelock-table: lock_tabledistributed-lock-table: distributed_lockquery-limit: 1000max-wait: 5000# server:# service-port: 8091 #If not configured, the default is '${server.port} + 1000'security:secretKey: SeataSecretKey0c382ef121d778043159209298fd40bf3850a017tokenValidityInMilliseconds: 1800000ignore:urls: /,/**/*.css,/**/*.js,/**/*.html,/**/*.map,/**/*.svg,/**/*.png,/**/*.ico,/console-fe/public/**,/api/v1/auth/login---
apiVersion: apps/v1
kind: Deployment
metadata:name: seata-servernamespace: defaultlabels:k8s-app: seata-server
spec:replicas: 1selector:matchLabels:k8s-app: seata-servertemplate:metadata:labels:k8s-app: seata-serverspec:containers:- name: seata-serverimage: docker.io/seataio/seata-server:1.6.1imagePullPolicy: IfNotPresentports:- name: http-7091containerPort: 7091protocol: TCP- name: http-8091containerPort: 8091protocol: TCPvolumeMounts:- name: seata-configmountPath: /seata-server/resources/application.ymlsubPath: application.ymlvolumes:- name: seata-configconfigMap:name: seata-server-config
---
apiVersion: v1
kind: Service
metadata:name: seata-servernamespace: defaultlabels:k8s-app: seata-server
spec:ports:- port: 8091protocol: TCPname: seata-8091- port: 7091protocol: TCPname: seata-7091selector:k8s-app: seata-server6. 部署java项目
我这只举个例子，你们可以按照自己的需求修改
6.1 制作cloud alibaba的docker容器
仅node节点执行
这句命令不懂的话，可以去看我上篇讲docker的文章
centos8安装docker运行java文件_centos8 docker安装java8-CSDN博客
把cloud-alibaba-gateway8000-1.0-SNAPSHOT.jar和ali-gateway.dockerfile放在同个目录，然后执行下面的语句
docker build -f ali-gateway.dockerfile -t ali-cloud-gateway:latest .ali-gateway.dockerfile
FROM openjdk:8
RUN mkdir /usr/local/project
ADD cloud-alibaba-gateway8000-1.0-SNAPSHOT.jar /usr/local/project/cloud-alibaba-gateway8000-1.0-SNAPSHOT.jar
EXPOSE 8000
ENTRYPOINT ["java","-jar","/usr/local/project/cloud-alibaba-gateway8000-1.0-SNAPSHOT.jar"]
运行后查看镜像是否创建成功了
6.2 部署ali-cloud-gateway
仅master节点执行
gateway是spring cloud服务的入口，所以要用service暴露端口访问，如果部署其他项目，可以把service的部分删掉，我这省事用Deployment，正常Deployment比较适用于单项目的部署，cloud项目比较适合用statefulset部署，方便日志文件的收集，statefulset可以参照4.2部署nacos的方式修改
kubectl create -f ali-cloud-gateway.ymlali-cloud-gateway.yml
apiVersion: apps/v1
kind: Deployment
metadata:name: ali-cloud-gateway-deployment
spec:replicas: 1selector:matchLabels:app: ali-cloud-gatewaytemplate:metadata:labels:app: ali-cloud-gatewayspec:containers:- name: ali-cloud-gatewayimage: ali-cloud-gateway:latestports:- containerPort: 8000---
apiVersion: v1
kind: Service
metadata:name: ali-cloud-gateway-svc
spec:selector:app: ali-cloud-gatewayports:- port: 8000 #service提供的虚拟端口,用于映射pod中容器的真实端口protocol: TCPname: ali-cloud-gateway-svc #端口的名称,用于释义targetPort: 8000 #容器对外暴露的端口,如果没有指定targetPort,则默认targetPort与port相同nodePort: 30005type: NodePort
通过gateway暴露的端口进行访问，成功访问到项目
6.3 部署sentinel
仅node节点执行
sentinel也就一个jar，部署方式和6.2类似，稍微提一下
docker build -f sentinel.dockerfile -t sentinel:1.8.6 .sentinel.dockerfile
FROM openjdk:8
RUN mkdir /usr/local/project
ADD sentinel-dashboard-1.8.6.jar /usr/local/project/sentinel-dashboard-1.8.6.jar
EXPOSE 8080
EXPOSE 8719
ENTRYPOINT ["java","-Dserver.port=8080","-Dcsp.sentinel.dashboard.server=localhost:8080","-Dproject.name=sentinel-dashboard","-jar","/usr/local/project/sentinel-dashboard-1.8.6.jar"]
仅master节点执行
开放sentinel前端访问的话，可以参考4.3nginx代理nacos的方法
kubectl create -f kube-sentinel.ymlkube-sentinel.yml
apiVersion: apps/v1
kind: Deployment
metadata:name: sentinel-deployment
spec:replicas: 1selector:matchLabels:app: sentineltemplate:metadata:labels:app: sentinelspec:containers:- name: sentinelimage: sentinel:1.8.6ports:- containerPort: 8080- containerPort: 8719---
apiVersion: v1
kind: Service
metadata:name: sentinel-front
spec:selector:app: sentinelports:- port: 8080 #service提供的虚拟端口,用于映射pod中容器的真实端口protocol: TCPname: sentinel-front #端口的名称,用于释义targetPort: 8080 #容器对外暴露的端口,如果没有指定targetPort,则默认targetPort与port相同- port: 8719protocol: TCPname: sentinel-service至此部署整个项目所需的知识都在这了，其中有些重复的步骤，我有标明在哪个地方有，可以尝试着自己做做，巩固下知识