docker搭建nacos server集群

前段时间因为学习微服务，通过docker搭建了nacos server集群，今天特意总结一下。感兴趣的小伙伴可以了解一下nacos文档和github

目前安装的nacos最新版本1.1.4
因为nacos依赖于mysql，所以咱们要先把mysql安装好，github的例子中的集群模式只有mysql5.7，单机模式才有mysql8。在实际的团队或者企业开发过程中，有可能会是mysql8，所以下面就是简述搭建基于mysql8的nacos server集群。

1.首先编写好docker-compose.yaml文件

version: "3"
services:
  mysql:
    container_name: mysql
    # 最新的mysql8版本
    image: mysql:latest
    environment:
      # mysql root用户密码
      MYSQL_ROOT_PASSWORD: root
    command:
      --default-authentication-plugin=mysql_native_password
      --character-set-server=utf8mb4
      --collation-server=utf8mb4_general_ci
      --explicit_defaults_for_timestamp=true
      --lower_case_table_names=1
      --max_allowed_packet=128M;
    volumes:
      # mysql的数据文件
      - ./mysql/data:/var/lib/mysql
      # mysql配置文件
      - ./mysql/config:/etc/mysql/conf.d
    ports:
      - "3306:3306"
  nacos1:
    hostname: nacos1
    container_name: nacos1
    image: nacos/nacos-server:latest
    volumes:
      # 需要添加mysql8的插件
      - ./nacos/plugins/mysql/:/home/nacos/plugins/mysql/
      # 把日志文件映射出来
      - ./nacos/cluster-logs/nacos1:/home/nacos/logs
      # 把配置文件映射出来
      - ./nacos/init.d/custom.properties:/home/nacos/init.d/custom.properties
    ports:
      - "8848:8848"
      - "9555:9555"
    env_file:
        # 集群配置文件
      - ./nacos/env/nacos-hostname.env
    restart: always
    depends_on:
      - mysql
  nacos2:
    hostname: nacos2
    image: nacos/nacos-server:latest
    container_name: nacos2
    volumes:
      - ./nacos/plugins/mysql/:/home/nacos/plugins/mysql/
      - ./nacos/cluster-logs/nacos2:/home/nacos/logs
      - ./nacos/init.d/custom.properties:/home/nacos/init.d/custom.properties
    ports:
      - "8849:8848"
    env_file:
      - ./nacos/env/nacos-hostname.env
    restart: always
    depends_on:
      - mysql
  nacos3:
    hostname: nacos3
    image: nacos/nacos-server:latest
    container_name: nacos3
    volumes:
      - ./nacos/plugins/mysql/:/home/nacos/plugins/mysql/
      - ./nacos/cluster-logs/nacos3:/home/nacos/logs
      - ./nacos/init.d/custom.properties:/home/nacos/init.d/custom.properties
    ports:
      - "8850:8848"
    env_file:
      - ./nacos/env/nacos-hostname.env
    restart: always
    depends_on:
      - mysql

我们还需要把上述的配置文件补齐

my.cnf

[mysqld]
default-time_zone='+8:00'

这是mysql8的配置文件，就是标准的mysql配置文件，我就改了一下时区，其他配置大家可以自定义修改。这个mysql实例不仅仅可以给nacos使用，还可以给开发环境其他应用使用。这也是为什么跳出官方给的example，自定义安装mysql的原因之一。

2.先把mysql实例运行起来(千万不要直接docker-compose up -d把所有的实例都运行起来)

docker-compose up -d mysql

先把需要事先配置的都先配置好，先创建对应的mysql用户：
在mysql实例中先创建好一个“nacos”的用户名，密码是“nacos”，并且把相关的数据库创建好，并允许该用户可以访问
ps:这个操作需要进入mysql实例里面，可通过

docker exec -it {mysql实例ID} /bin/bash

进入mysql实例后，通过

# 登录mysql控制台，密码为docker-compose.yaml里面配置的root
mysql -uroot -p

use mysql;
//创建用户
CREATE USER 'nacos'@'%' identified by 'nacos';
//赋予权限
grant all privileges on nacos_devtest.* to 'nacos'@'%' with GRANT OPTION;
flush privileges;

再创建一个名叫“nacos_devtest”的数据库
nacos_devtest数据库中所有的数据表

DROP TABLE IF EXISTS `config_info`;
CREATE TABLE `config_info` (
  `id` bigint NOT NULL AUTO_INCREMENT COMMENT 'id',
  `data_id` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT 'data_id',
  `group_id` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL,
  `content` longtext CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT 'content',
  `md5` varchar(32) CHARACTER SET utf8 COLLATE utf8_bin 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 CHARACTER SET utf8 COLLATE utf8_bin COMMENT 'source user',
  `src_ip` varchar(20) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL COMMENT 'source ip',
  `app_name` varchar(128) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL,
  `tenant_id` varchar(128) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT '' COMMENT '租户字段',
  `c_desc` varchar(256) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL,
  `c_use` varchar(64) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL,
  `effect` varchar(64) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL,
  `type` varchar(64) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL,
  `c_schema` text CHARACTER SET utf8 COLLATE utf8_bin,
  PRIMARY KEY (`id`),
  UNIQUE KEY `uk_configinfo_datagrouptenant` (`data_id`,`group_id`,`tenant_id`)
) ENGINE=InnoDB AUTO_INCREMENT=9 DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='config_info';

-- ----------------------------
-- Table structure for config_info_aggr
-- ----------------------------
DROP TABLE IF EXISTS `config_info_aggr`;
CREATE TABLE `config_info_aggr` (
  `id` bigint NOT NULL AUTO_INCREMENT COMMENT 'id',
  `data_id` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT 'data_id',
  `group_id` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT 'group_id',
  `datum_id` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT 'datum_id',
  `content` longtext CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT '内容',
  `gmt_modified` datetime NOT NULL COMMENT '修改时间',
  `app_name` varchar(128) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL,
  `tenant_id` varchar(128) CHARACTER SET utf8 COLLATE utf8_bin 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';

-- ----------------------------
-- Table structure for config_info_beta
-- ----------------------------
DROP TABLE IF EXISTS `config_info_beta`;
CREATE TABLE `config_info_beta` (
  `id` bigint NOT NULL AUTO_INCREMENT COMMENT 'id',
  `data_id` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT 'data_id',
  `group_id` varchar(128) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT 'group_id',
  `app_name` varchar(128) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL COMMENT 'app_name',
  `content` longtext CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT 'content',
  `beta_ips` varchar(1024) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL COMMENT 'betaIps',
  `md5` varchar(32) CHARACTER SET utf8 COLLATE utf8_bin 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 CHARACTER SET utf8 COLLATE utf8_bin COMMENT 'source user',
  `src_ip` varchar(20) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL COMMENT 'source ip',
  `tenant_id` varchar(128) CHARACTER SET utf8 COLLATE utf8_bin 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';

-- ----------------------------
-- Table structure for config_info_tag
-- ----------------------------
DROP TABLE IF EXISTS `config_info_tag`;
CREATE TABLE `config_info_tag` (
  `id` bigint NOT NULL AUTO_INCREMENT COMMENT 'id',
  `data_id` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT 'data_id',
  `group_id` varchar(128) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT 'group_id',
  `tenant_id` varchar(128) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT '' COMMENT 'tenant_id',
  `tag_id` varchar(128) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT 'tag_id',
  `app_name` varchar(128) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL COMMENT 'app_name',
  `content` longtext CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT 'content',
  `md5` varchar(32) CHARACTER SET utf8 COLLATE utf8_bin 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 CHARACTER SET utf8 COLLATE utf8_bin COMMENT 'source user',
  `src_ip` varchar(20) CHARACTER SET utf8 COLLATE utf8_bin 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';

-- ----------------------------
-- Table structure for config_tags_relation
-- ----------------------------
DROP TABLE IF EXISTS `config_tags_relation`;
CREATE TABLE `config_tags_relation` (
  `id` bigint NOT NULL COMMENT 'id',
  `tag_name` varchar(128) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT 'tag_name',
  `tag_type` varchar(64) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL COMMENT 'tag_type',
  `data_id` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT 'data_id',
  `group_id` varchar(128) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT 'group_id',
  `tenant_id` varchar(128) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT '' COMMENT 'tenant_id',
  `nid` bigint 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';

-- ----------------------------
-- Table structure for group_capacity
-- ----------------------------
DROP TABLE IF EXISTS `group_capacity`;
CREATE TABLE `group_capacity` (
  `id` bigint unsigned NOT NULL AUTO_INCREMENT COMMENT '主键ID',
  `group_id` varchar(128) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT '' COMMENT 'Group ID，空字符表示整个集群',
  `quota` int unsigned NOT NULL DEFAULT '0' COMMENT '配额，0表示使用默认值',
  `usage` int unsigned NOT NULL DEFAULT '0' COMMENT '使用量',
  `max_size` int 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 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 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 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';

-- ----------------------------
-- Table structure for his_config_info
-- ----------------------------
DROP TABLE IF EXISTS `his_config_info`;
CREATE TABLE `his_config_info` (
  `id` bigint unsigned NOT NULL,
  `nid` bigint unsigned NOT NULL AUTO_INCREMENT,
  `data_id` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL,
  `group_id` varchar(128) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL,
  `app_name` varchar(128) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL COMMENT 'app_name',
  `content` longtext CHARACTER SET utf8 COLLATE utf8_bin NOT NULL,
  `md5` varchar(32) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL,
  `gmt_create` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
  `gmt_modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
  `src_user` text CHARACTER SET utf8 COLLATE utf8_bin,
  `src_ip` varchar(20) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL,
  `op_type` char(10) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL,
  `tenant_id` varchar(128) CHARACTER SET utf8 COLLATE utf8_bin 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 AUTO_INCREMENT=9 DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='多租户改造';

-- ----------------------------
-- Table structure for permissions
-- ----------------------------
DROP TABLE IF EXISTS `permissions`;
CREATE TABLE `permissions` (
  `role` varchar(50) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL,
  `permission` varchar(512) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL,
  `gmt_create` bigint DEFAULT NULL,
  `gmt_modified` bigint DEFAULT NULL,
  UNIQUE KEY `idx_role_resource` (`role`,`permission`) USING BTREE
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

-- ----------------------------
-- Table structure for roles
-- ----------------------------
DROP TABLE IF EXISTS `roles`;
CREATE TABLE `roles` (
  `username` varchar(50) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL,
  `role` varchar(50) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL,
  UNIQUE KEY `idx_user_role` (`username`,`role`) USING BTREE
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

-- ----------------------------
-- Table structure for tenant_capacity
-- ----------------------------
DROP TABLE IF EXISTS `tenant_capacity`;
CREATE TABLE `tenant_capacity` (
  `id` bigint unsigned NOT NULL AUTO_INCREMENT COMMENT '主键ID',
  `tenant_id` varchar(128) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT '' COMMENT 'Tenant ID',
  `quota` int unsigned NOT NULL DEFAULT '0' COMMENT '配额，0表示使用默认值',
  `usage` int unsigned NOT NULL DEFAULT '0' COMMENT '使用量',
  `max_size` int 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 unsigned NOT NULL DEFAULT '0' COMMENT '聚合子配置最大个数',
  `max_aggr_size` int 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 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';

-- ----------------------------
-- Table structure for tenant_info
-- ----------------------------
DROP TABLE IF EXISTS `tenant_info`;
CREATE TABLE `tenant_info` (
  `id` bigint NOT NULL AUTO_INCREMENT COMMENT 'id',
  `kp` varchar(128) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT 'kp',
  `tenant_id` varchar(128) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT '' COMMENT 'tenant_id',
  `tenant_name` varchar(128) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT '' COMMENT 'tenant_name',
  `tenant_desc` varchar(256) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL COMMENT 'tenant_desc',
  `create_source` varchar(32) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL COMMENT 'create_source',
  `gmt_create` bigint NOT NULL COMMENT '创建时间',
  `gmt_modified` bigint 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 AUTO_INCREMENT=2 DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='tenant_info';

-- ----------------------------
-- Table structure for users
-- ----------------------------
DROP TABLE IF EXISTS `users`;
CREATE TABLE `users` (
  `username` varchar(50) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL,
  `password` varchar(500) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL,
  `enabled` tinyint(1) NOT NULL,
  PRIMARY KEY (`username`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

BEGIN;
INSERT INTO `users` VALUES ('nacos', '$2a$10$EuWPZHzz32dJN7jexM34MOeYirDdFAZm2kuWj7VEOJhhZkDrxfvUu', 1);
COMMIT;

3.配置nacos

插件mysql-connector-java-8.0.19.jar

大家点击上面链接，把jar包下载好，并且放进相对路径下的./nacos/plugins/mysql/文件夹。该文件夹需要自己创建好。

custom.properties

#spring.security.enabled=false
#management.security=false
#security.basic.enabled=false
#nacos.security.ignore.urls=/**
#management.metrics.export.elastic.host=http://localhost:9200
# metrics for prometheus
management.endpoints.web.exposure.include=*

# metrics for elastic search
#management.metrics.export.elastic.enabled=false
#management.metrics.export.elastic.host=http://localhost:9200

# metrics for influx
#management.metrics.export.influx.enabled=false
#management.metrics.export.influx.db=springboot
#management.metrics.export.influx.uri=http://localhost:8086
#management.metrics.export.influx.auto-create-db=true
#management.metrics.export.influx.consistency=one
#management.metrics.export.influx.compressed=true

这个配置文件我就直接原封不动地复制过来了

nacos-hostname.env

#nacos dev env
PREFER_HOST_MODE=hostname
# docker实例别名，可以换成ip
NACOS_SERVERS=nacos1:8848 nacos2:8848 nacos3:8848
MYSQL_SERVICE_HOST=mysql
# 指定保存数据的数据库名称
MYSQL_SERVICE_DB_NAME=nacos_devtest
# 访问mysql端口
MYSQL_SERVICE_PORT=3306
# 访问mysql的用户名
MYSQL_SERVICE_USER=nacos
# 访问mysql的密码
MYSQL_SERVICE_PASSWORD=nacos

上面的配置就是按照第2步咱们配置的mysql实例来的

4.启动nacos server集群

docker-compose up -d

执行上述命令，nacos1，nacos2，nacos3实例就会启动，后续可以通过浏览器访问

http://{ip}:8848/nacos

{ip}变量就是指的宿主机的ip

出现以下登录界面即表示nacos server集群搭建成功

image-20200315151204294.png

登录的用户名：nacos，密码：nacos