docker安装nacos（docker中nacos集群）

一、创建自定义网络

docker network create --driver bridge --subnet 192.172.0.0/16 --gateway 192.172.0.1 newnet

docker容器间通信参考：https://www.cnblogs.com/zwh0910/p/16435947.html

二、docker安装mysql

参考：https://www.cnblogs.com/zwh0910/p/16503471.html

docker run -itd -p 3306:3306  \
 --name mysql8 \
 -v /home/mysql/conf/my.cnf:/etc/my.cnf \
 -v /home/mysql/data:/var/lib/mysql  \
 --privileged=true \
 --restart=always  \
 --net newnet --ip 192.172.0.10 \
 -e MYSQL_ROOT_PASSWORD=123456 \
 -d mysql:8.0.26

注意指定自定义网络为newnet，mysql8容器的IP地址为192.172.0.10。

将mysql8加入到自定义网络

#使用docker network connect将容器和网络进行连接
#（注意，是将容器和网络连接，不是网络和网络连接）
docker network connect newnet mysql8

查看newnet网络命令

docker network inspect newnet

部分结果如下:

"251c41931a6694d4a5a1660c39ce9c45750b78efdc0ec050def33c7bd8afa4b0": {
                "Name": "mysql8",
                "EndpointID": "f1d645dee87b231f25363b8eadebf15c9a9c77c1cd10345a35e942d0ac850241",
                "MacAddress": "02:42:c0:ac:00:0a",
                "IPv4Address": "192.172.0.10/16",
                "IPv6Address": ""
            },

此时容器mysql8已经加入newnet中，mysql8容器的IP为192.172.0.10。

三、创建nacos_config数据库，执行nacos-mysql.sql文件

sql语句源文件的地址：https://github.com/alibaba/nacos/blob/2.0.3/distribution/conf/nacos-mysql.sql

脚本如下：

 * Copyright 1999-2018 Alibaba Group Holding Ltd.
 *
 * 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.
 */

/******************************************/
/*   数据库全名 = nacos_config   */
/*   表名称 = config_info   */
/******************************************/
CREATE TABLE `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';

/******************************************/
/*   数据库全名 = nacos_config   */
/*   表名称 = config_info_aggr   */
/******************************************/
CREATE TABLE `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';


/******************************************/
/*   数据库全名 = nacos_config   */
/*   表名称 = config_info_beta   */
/******************************************/
CREATE TABLE `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';

/******************************************/
/*   数据库全名 = nacos_config   */
/*   表名称 = config_info_tag   */
/******************************************/
CREATE TABLE `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';

/******************************************/
/*   数据库全名 = nacos_config   */
/*   表名称 = config_tags_relation   */
/******************************************/
CREATE TABLE `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';

/******************************************/
/*   数据库全名 = nacos_config   */
/*   表名称 = group_capacity   */
/******************************************/
CREATE TABLE `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';

/******************************************/
/*   数据库全名 = nacos_config   */
/*   表名称 = his_config_info   */
/******************************************/
CREATE TABLE `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';


/******************************************/
/*   数据库全名 = nacos_config   */
/*   表名称 = tenant_capacity   */
/******************************************/
CREATE TABLE `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 `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 `users` (
    `username` varchar(50) NOT NULL PRIMARY KEY,
    `password` varchar(500) NOT NULL,
    `enabled` boolean NOT NULL
);

CREATE TABLE `roles` (
    `username` varchar(50) NOT NULL,
    `role` varchar(50) NOT NULL,
    UNIQUE INDEX `idx_user_role` (`username` ASC, `role` ASC) USING BTREE
);

CREATE TABLE `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
);

INSERT INTO users (username, password, enabled) VALUES ('nacos', '$2a$10$EuWPZHzz32dJN7jexM34MOeYirDdFAZm2kuWj7VEOJhhZkDrxfvUu', TRUE);

INSERT INTO roles (username, role) VALUES ('nacos', 'ROLE_ADMIN');

四、单台nacos

1、docker拉取镜像

docker pull nacos/nacos-server:2.0.3

2、创建容器

命令：

docker run -it \
-e PREFER_HOST_MODE=ip \
-e MODE=standalone \
-e SPRING_DATASOURCE_PLATFORM=mysql \
-e MYSQL_SERVICE_HOST=172.17.0.2 \
-e MYSQL_SERVICE_PORT=3306 \
-e MYSQL_SERVICE_USER=root \
-e MYSQL_SERVICE_PASSWORD=123456 \
-e MYSQL_SERVICE_DB_NAME=nacos_config \
-p 8850:8848 \
--name nacos1 \
--restart=always \
nacos/nacos-server:2.0.3

MODE=standalone 单机版（开发阶段）
--restart=always 开机启动
-p 8848:8848 映射端口
-d 创建一个守护式容器在后台运行

注意：没有改动application.properties中的配置。

3、查看日志

docker logs -f nacos1

日志如下：

[root@xxx my.cnf]# docker run -it \
> -e PREFER_HOST_MODE=ip \
> -e MODE=standalone \
> -e SPRING_DATASOURCE_PLATFORM=mysql \
> -e MYSQL_SERVICE_HOST=172.17.0.2 \
> -e MYSQL_SERVICE_PORT=3306 \
> -e MYSQL_SERVICE_USER=root \
> -e MYSQL_SERVICE_PASSWORD=123456 \
> -e MYSQL_SERVICE_DB_NAME=nacos_config \
> -p 8848:8848 \
> --name nacos \
> --restart=always \
> nacos/nacos-server:2.0.3
+ export CUSTOM_SEARCH_NAMES=application,custom
+ CUSTOM_SEARCH_NAMES=application,custom
+ export CUSTOM_SEARCH_LOCATIONS=/home/nacos/init.d/,file:/home/nacos/conf/
+ CUSTOM_SEARCH_LOCATIONS=/home/nacos/init.d/,file:/home/nacos/conf/
+ export MEMBER_LIST=
+ MEMBER_LIST=
+ PLUGINS_DIR=/home/nacos/plugins/peer-finder
+ [[ standalone == \s\t\a\n\d\a\l\o\n\e ]]
+ JAVA_OPT=' -Xms1g -Xmx1g -Xmn512m'
+ JAVA_OPT=' -Xms1g -Xmx1g -Xmn512m -Dnacos.standalone=true'
+ [[ all == \c\o\n\f\i\g ]]
+ [[ all == \n\a\m\i\n\g ]]
+ [[ ! -z '' ]]
+ [[ ! -z '' ]]
+ [[ ! -z '' ]]
+ [[ ! -z '' ]]
+ [[ ! -z '' ]]
+ [[ ip == \h\o\s\t\n\a\m\e ]]
+ JAVA_OPT=' -Xms1g -Xmx1g -Xmn512m -Dnacos.standalone=true -Dnacos.member.list='
++ /usr/lib/jvm/java-1.8.0-openjdk/bin/java -version
++ sed -E -n 's/.* version "([0-9]*).*$/\1/p'
+ JAVA_MAJOR_VERSION=1
+ [[ 1 -ge 9 ]]
+ JAVA_OPT=' -Xms1g -Xmx1g -Xmn512m -Dnacos.standalone=true -Dnacos.member.list= -Djava.ext.dirs=/usr/lib/jvm/java-1.8.0-openjdk/jre/lib/ext:/usr/lib/jvm/java-1.8.0-openjdk/lib/ext:/home/nacos/plugins/health:/home/nacos/plugins/cmdb:/home/nacos/plugins/mysql'
+ JAVA_OPT=' -Xms1g -Xmx1g -Xmn512m -Dnacos.standalone=true -Dnacos.member.list= -Djava.ext.dirs=/usr/lib/jvm/java-1.8.0-openjdk/jre/lib/ext:/usr/lib/jvm/java-1.8.0-openjdk/lib/ext:/home/nacos/plugins/health:/home/nacos/plugins/cmdb:/home/nacos/plugins/mysql -Xloggc:/home/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M'
+ JAVA_OPT=' -Xms1g -Xmx1g -Xmn512m -Dnacos.standalone=true -Dnacos.member.list= -Djava.ext.dirs=/usr/lib/jvm/java-1.8.0-openjdk/jre/lib/ext:/usr/lib/jvm/java-1.8.0-openjdk/lib/ext:/home/nacos/plugins/health:/home/nacos/plugins/cmdb:/home/nacos/plugins/mysql -Xloggc:/home/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dnacos.home=/home/nacos'
+ JAVA_OPT=' -Xms1g -Xmx1g -Xmn512m -Dnacos.standalone=true -Dnacos.member.list= -Djava.ext.dirs=/usr/lib/jvm/java-1.8.0-openjdk/jre/lib/ext:/usr/lib/jvm/java-1.8.0-openjdk/lib/ext:/home/nacos/plugins/health:/home/nacos/plugins/cmdb:/home/nacos/plugins/mysql -Xloggc:/home/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dnacos.home=/home/nacos -jar /home/nacos/target/nacos-server.jar'
+ JAVA_OPT=' -Xms1g -Xmx1g -Xmn512m -Dnacos.standalone=true -Dnacos.member.list= -Djava.ext.dirs=/usr/lib/jvm/java-1.8.0-openjdk/jre/lib/ext:/usr/lib/jvm/java-1.8.0-openjdk/lib/ext:/home/nacos/plugins/health:/home/nacos/plugins/cmdb:/home/nacos/plugins/mysql -Xloggc:/home/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dnacos.home=/home/nacos -jar /home/nacos/target/nacos-server.jar '
+ JAVA_OPT=' -Xms1g -Xmx1g -Xmn512m -Dnacos.standalone=true -Dnacos.member.list= -Djava.ext.dirs=/usr/lib/jvm/java-1.8.0-openjdk/jre/lib/ext:/usr/lib/jvm/java-1.8.0-openjdk/lib/ext:/home/nacos/plugins/health:/home/nacos/plugins/cmdb:/home/nacos/plugins/mysql -Xloggc:/home/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dnacos.home=/home/nacos -jar /home/nacos/target/nacos-server.jar --spring.config.additional-location=/home/nacos/init.d/,file:/home/nacos/conf/'
+ JAVA_OPT=' -Xms1g -Xmx1g -Xmn512m -Dnacos.standalone=true -Dnacos.member.list= -Djava.ext.dirs=/usr/lib/jvm/java-1.8.0-openjdk/jre/lib/ext:/usr/lib/jvm/java-1.8.0-openjdk/lib/ext:/home/nacos/plugins/health:/home/nacos/plugins/cmdb:/home/nacos/plugins/mysql -Xloggc:/home/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dnacos.home=/home/nacos -jar /home/nacos/target/nacos-server.jar --spring.config.additional-location=/home/nacos/init.d/,file:/home/nacos/conf/ --spring.config.name=application,custom'
+ JAVA_OPT=' -Xms1g -Xmx1g -Xmn512m -Dnacos.standalone=true -Dnacos.member.list= -Djava.ext.dirs=/usr/lib/jvm/java-1.8.0-openjdk/jre/lib/ext:/usr/lib/jvm/java-1.8.0-openjdk/lib/ext:/home/nacos/plugins/health:/home/nacos/plugins/cmdb:/home/nacos/plugins/mysql -Xloggc:/home/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dnacos.home=/home/nacos -jar /home/nacos/target/nacos-server.jar --spring.config.additional-location=/home/nacos/init.d/,file:/home/nacos/conf/ --spring.config.name=application,custom --logging.config=/home/nacos/conf/nacos-logback.xml'
+ JAVA_OPT=' -Xms1g -Xmx1g -Xmn512m -Dnacos.standalone=true -Dnacos.member.list= -Djava.ext.dirs=/usr/lib/jvm/java-1.8.0-openjdk/jre/lib/ext:/usr/lib/jvm/java-1.8.0-openjdk/lib/ext:/home/nacos/plugins/health:/home/nacos/plugins/cmdb:/home/nacos/plugins/mysql -Xloggc:/home/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dnacos.home=/home/nacos -jar /home/nacos/target/nacos-server.jar --spring.config.additional-location=/home/nacos/init.d/,file:/home/nacos/conf/ --spring.config.name=application,custom --logging.config=/home/nacos/conf/nacos-logback.xml --server.max-http-header-size=524288'
+ echo 'Nacos is starting, you can docker logs your container'
Nacos is starting, you can docker logs your container
+ exec /usr/lib/jvm/java-1.8.0-openjdk/bin/java -Xms1g -Xmx1g -Xmn512m -Dnacos.standalone=true -Dnacos.member.list= -Djava.ext.dirs=/usr/lib/jvm/java-1.8.0-openjdk/jre/lib/ext:/usr/lib/jvm/java-1.8.0-openjdk/lib/ext:/home/nacos/plugins/health:/home/nacos/plugins/cmdb:/home/nacos/plugins/mysql -Xloggc:/home/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dnacos.home=/home/nacos -jar /home/nacos/target/nacos-server.jar --spring.config.additional-location=/home/nacos/init.d/,file:/home/nacos/conf/ --spring.config.name=application,custom --logging.config=/home/nacos/conf/nacos-logback.xml --server.max-http-header-size=524288

,--.
,--.'|
,--,: : | Nacos 2.0.3
,`--.'`| ' : ,---. Running in stand alone mode, All function modules
| : : | | ' ,'\ .--.--. Port: 8848
: | \ | : ,--.--. ,---. / / | / / ' Pid: 1
| : ' '; | / \ / \. ; ,. :| : /`./ Console: http://172.17.0.3:8848/nacos/index.html
' ' ;. ;.--. .-. | / / '' | |: :| : ;_
| | | \ | \__\/: . .. ' / ' | .; : \ \ `. https://nacos.io
' : | ; .' ," .--.; |' ; :__| : | `----. \
| | '`--' / / ,. |' | '.'|\ \ / / /`--' /
' : | ; : .' \ : : `----' '--'. /
; |.' | , .-./\ \ / `--'---'
'---' `--`---' `----'

2022-07-21 21:01:55,204 INFO Bean 'org.springframework.security.access.expression.method.DefaultMethodSecurityExpressionHandler@2472c7d8' of type [org.springframework.security.access.expression.method.DefaultMethodSecurityExpressionHandler] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)

2022-07-21 21:01:55,213 INFO Bean 'methodSecurityMetadataSource' of type [org.springframework.security.access.method.DelegatingMethodSecurityMetadataSource] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)

2022-07-21 21:01:55,572 INFO Tomcat initialized with port(s): 8848 (http)

2022-07-21 21:01:56,022 INFO Root WebApplicationContext: initialization completed in 5236 ms

2022-07-21 21:02:00,097 INFO Initializing ExecutorService 'applicationTaskExecutor'

2022-07-21 21:02:00,248 INFO Adding welcome page: class path resource [static/index.html]

2022-07-21 21:02:00,697 INFO Creating filter chain: Ant [pattern='/**'], []

2022-07-21 21:02:00,735 INFO Creating filter chain: any request, [org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter@29eda4f8, org.springframework.security.web.context.SecurityContextPersistenceFilter@84487f4, org.springframework.security.web.header.HeaderWriterFilter@53a9fcfd, org.springframework.security.web.csrf.CsrfFilter@2f61d591, org.springframework.security.web.authentication.logout.LogoutFilter@4fc142ec, org.springframework.security.web.savedrequest.RequestCacheAwareFilter@6d303498, org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter@710d89e2, org.springframework.security.web.authentication.AnonymousAuthenticationFilter@1b9776f5, org.springframework.security.web.session.SessionManagementFilter@4d192aef, org.springframework.security.web.access.ExceptionTranslationFilter@7173ae5b]

2022-07-21 21:02:00,855 INFO Initializing ExecutorService 'taskScheduler'

2022-07-21 21:02:00,878 INFO Exposing 16 endpoint(s) beneath base path '/actuator'

2022-07-21 21:02:00,992 INFO Tomcat started on port(s): 8848 (http) with context path '/nacos'

2022-07-21 21:02:00,995 INFO Nacos started successfully in stand alone mode. use external storage

2022-07-21 21:02:33,345 INFO Initializing Servlet 'dispatcherServlet'

2022-07-21 21:02:33,367 INFO Completed initialization in 20 ms

use external storage表示使用外部存储。

如果是云服务器，则安全组要开放8848端口

4、浏览器访问：http://IP:8848/nacos

用户名和密码登录：nacos/nacos

新建名称空间

点击确定

此时数据库tenant_info表中的数据如下：

说明使用外部存储成功！

五、搭建nacos集群

Nacos-docker的一些环境参数含义如下表所示

1、创建Nacos容器

（1）、启动第一个Nacos容器

docker run -it \
-e PREFER_HOST_MODE=ip \
-e MODE=cluster \
-e NACOS_SERVERS="192.172.0.21:8848 192.172.0.22:8848" \
-e SPRING_DATASOURCE_PLATFORM=mysql \
-e MYSQL_SERVICE_HOST=192.172.0.10 \
-e MYSQL_SERVICE_PORT=3306 \
-e MYSQL_SERVICE_USER=root \
-e MYSQL_SERVICE_PASSWORD=123456 \
-e MYSQL_SERVICE_DB_NAME=nacos_config \
-e MYSQL_SERVICE_DB_PARAM='characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useSSL=false&useUnicode=true&serverTimezone=UTC' \ 
-p 9902:8848 \
--name nacos2 \
--net newnet \
--ip 192.172.0.20 \
--restart=always nacos/nacos-server:2.0.3

在服务器中执行时，去掉\变成一行再执行：

docker run -it -e PREFER_HOST_MODE=ip -e MODE=cluster -e NACOS_SERVERS="192.172.0.21:8848 192.172.0.22:8848" -e SPRING_DATASOURCE_PLATFORM=mysql -e MYSQL_SERVICE_HOST=192.172.0.10 -e MYSQL_SERVICE_PORT=3306 -e MYSQL_SERVICE_USER=root -e MYSQL_SERVICE_PASSWORD=123456 -e MYSQL_SERVICE_DB_NAME=nacos_config -e MYSQL_SERVICE_DB_PARAM='characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useSSL=false&useUnicode=true&serverTimezone=UTC' -p 9902:8848 --name nacos2 --net newnet --ip 192.172.0.20 --restart=always nacos/nacos-server:2.0.3

注意：1）、不要省略MYSQL_SERVICE_DB_PARAM，它的值还要加上&useUnicode=true&serverTimezone=UTC。2）、MYSQL_SERVICE_HOST为mysql容器的IP。3）、-it不要加d，方便查看是否报错，加d是后台运行。

原始配置文件如下：

# spring
server.servlet.contextPath=${SERVER_SERVLET_CONTEXTPATH:/nacos}
server.contextPath=/nacos
server.port=${NACOS_APPLICATION_PORT:8848}
spring.datasource.platform=${SPRING_DATASOURCE_PLATFORM:""}
nacos.cmdb.dumpTaskInterval=3600
nacos.cmdb.eventTaskInterval=10
nacos.cmdb.labelTaskInterval=300
nacos.cmdb.loadDataAtStart=false
db.num=${MYSQL_DATABASE_NUM:1}
db.url.0=jdbc:mysql://${MYSQL_SERVICE_HOST}:${MYSQL_SERVICE_PORT:3306}/${MYSQL_SERVICE_DB_NAME}?${MYSQL_SERVICE_DB_PARAM:characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useSSL=false}
db.url.1=jdbc:mysql://${MYSQL_SERVICE_HOST}:${MYSQL_SERVICE_PORT:3306}/${MYSQL_SERVICE_DB_NAME}?${MYSQL_SERVICE_DB_PARAM:characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useSSL=false}
db.user=${MYSQL_SERVICE_USER}
db.password=${MYSQL_SERVICE_PASSWORD}
### The auth system to use, currently only 'nacos' is supported:
nacos.core.auth.system.type=${NACOS_AUTH_SYSTEM_TYPE:nacos}


### The token expiration in seconds:
nacos.core.auth.default.token.expire.seconds=${NACOS_AUTH_TOKEN_EXPIRE_SECONDS:18000}

### The default token:
nacos.core.auth.default.token.secret.key=${NACOS_AUTH_TOKEN:SecretKey012345678901234567890123456789012345678901234567890123456789}

### Turn on/off caching of auth information. By turning on this switch, the update of auth information would have a 15 seconds delay.
nacos.core.auth.caching.enabled=${NACOS_AUTH_CACHE_ENABLE:false}
nacos.core.auth.enable.userAgentAuthWhite=${NACOS_AUTH_USER_AGENT_AUTH_WHITE_ENABLE:false}
nacos.core.auth.server.identity.key=${NACOS_AUTH_IDENTITY_KEY:serverIdentity}
nacos.core.auth.server.identity.value=${NACOS_AUTH_IDENTITY_VALUE:security}
server.tomcat.accesslog.enabled=${TOMCAT_ACCESSLOG_ENABLED:false}
server.tomcat.accesslog.pattern=%h %l %u %t "%r" %s %b %D
# default current work dir
server.tomcat.basedir=
## spring security config
### turn off security
nacos.security.ignore.urls=${NACOS_SECURITY_IGNORE_URLS:/,/error,/**/*.css,/**/*.js,/**/*.html,/**/*.map,/**/*.svg,/**/*.png,/**/*.ico,/console-fe/public/**,/v1/auth/**,/v1/console/health/**,/actuator/**,/v1/console/server/**}
# metrics for elastic search
management.metrics.export.elastic.enabled=false
management.metrics.export.influx.enabled=false

注意：不需要修改配置文件application.properties。

启动后查看启动日志：

[root@xxx ~]# docker logs -f nacos2
+ export CUSTOM_SEARCH_NAMES=application,custom
+ CUSTOM_SEARCH_NAMES=application,custom
+ export CUSTOM_SEARCH_LOCATIONS=/home/nacos/init.d/,file:/home/nacos/conf/
+ CUSTOM_SEARCH_LOCATIONS=/home/nacos/init.d/,file:/home/nacos/conf/
+ export MEMBER_LIST=
+ MEMBER_LIST=
+ PLUGINS_DIR=/home/nacos/plugins/peer-finder
+ [[ cluster == \s\t\a\n\d\a\l\o\n\e ]]
+ [[ '' == \e\m\b\e\d\d\e\d ]]
+ JAVA_OPT=' -server -Xms1g -Xmx1g -Xmn512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m'
+ [[ n == \y ]]
+ JAVA_OPT=' -server -Xms1g -Xmx1g -Xmn512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m -XX:-OmitStackTraceInFastThrow -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/home/nacos/logs/java_heapdump.hprof'
+ JAVA_OPT=' -server -Xms1g -Xmx1g -Xmn512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m -XX:-OmitStackTraceInFastThrow -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/home/nacos/logs/java_heapdump.hprof -XX:-UseLargePages'
+ print_servers
+ [[ ! -d /home/nacos/plugins/peer-finder ]]
+ echo ''
+ for server in '${NACOS_SERVERS}'
+ echo 192.172.0.21:8848
+ for server in '${NACOS_SERVERS}'
+ echo 192.172.0.22:8848
+ [[ all == \c\o\n\f\i\g ]]
+ [[ all == \n\a\m\i\n\g ]]
+ [[ ! -z '' ]]
+ [[ ! -z '' ]]
+ [[ ! -z '' ]]
+ [[ ! -z '' ]]
+ [[ ! -z '' ]]
+ [[ ip == \h\o\s\t\n\a\m\e ]]
+ JAVA_OPT=' -server -Xms1g -Xmx1g -Xmn512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m -XX:-OmitStackTraceInFastThrow -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/home/nacos/logs/java_heapdump.hprof -XX:-UseLargePages -Dnacos.member.list='
++ /usr/lib/jvm/java-1.8.0-openjdk/bin/java -version
++ sed -E -n 's/.* version "([0-9]*).*$/\1/p'
+ JAVA_MAJOR_VERSION=1
+ [[ 1 -ge 9 ]]
+ JAVA_OPT=' -server -Xms1g -Xmx1g -Xmn512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m -XX:-OmitStackTraceInFastThrow -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/home/nacos/logs/java_heapdump.hprof -XX:-UseLargePages -Dnacos.member.list= -Djava.ext.dirs=/usr/lib/jvm/java-1.8.0-openjdk/jre/lib/ext:/usr/lib/jvm/java-1.8.0-openjdk/lib/ext:/home/nacos/plugins/health:/home/nacos/plugins/cmdb:/home/nacos/plugins/mysql'
+ JAVA_OPT=' -server -Xms1g -Xmx1g -Xmn512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m -XX:-OmitStackTraceInFastThrow -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/home/nacos/logs/java_heapdump.hprof -XX:-UseLargePages -Dnacos.member.list= -Djava.ext.dirs=/usr/lib/jvm/java-1.8.0-openjdk/jre/lib/ext:/usr/lib/jvm/java-1.8.0-openjdk/lib/ext:/home/nacos/plugins/health:/home/nacos/plugins/cmdb:/home/nacos/plugins/mysql -Xloggc:/home/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M'
+ JAVA_OPT=' -server -Xms1g -Xmx1g -Xmn512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m -XX:-OmitStackTraceInFastThrow -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/home/nacos/logs/java_heapdump.hprof -XX:-UseLargePages -Dnacos.member.list= -Djava.ext.dirs=/usr/lib/jvm/java-1.8.0-openjdk/jre/lib/ext:/usr/lib/jvm/java-1.8.0-openjdk/lib/ext:/home/nacos/plugins/health:/home/nacos/plugins/cmdb:/home/nacos/plugins/mysql -Xloggc:/home/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dnacos.home=/home/nacos'
+ JAVA_OPT=' -server -Xms1g -Xmx1g -Xmn512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m -XX:-OmitStackTraceInFastThrow -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/home/nacos/logs/java_heapdump.hprof -XX:-UseLargePages -Dnacos.member.list= -Djava.ext.dirs=/usr/lib/jvm/java-1.8.0-openjdk/jre/lib/ext:/usr/lib/jvm/java-1.8.0-openjdk/lib/ext:/home/nacos/plugins/health:/home/nacos/plugins/cmdb:/home/nacos/plugins/mysql -Xloggc:/home/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dnacos.home=/home/nacos -jar /home/nacos/target/nacos-server.jar'
+ JAVA_OPT=' -server -Xms1g -Xmx1g -Xmn512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m -XX:-OmitStackTraceInFastThrow -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/home/nacos/logs/java_heapdump.hprof -XX:-UseLargePages -Dnacos.member.list= -Djava.ext.dirs=/usr/lib/jvm/java-1.8.0-openjdk/jre/lib/ext:/usr/lib/jvm/java-1.8.0-openjdk/lib/ext:/home/nacos/plugins/health:/home/nacos/plugins/cmdb:/home/nacos/plugins/mysql -Xloggc:/home/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dnacos.home=/home/nacos -jar /home/nacos/target/nacos-server.jar '
+ JAVA_OPT=' -server -Xms1g -Xmx1g -Xmn512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m -XX:-OmitStackTraceInFastThrow -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/home/nacos/logs/java_heapdump.hprof -XX:-UseLargePages -Dnacos.member.list= -Djava.ext.dirs=/usr/lib/jvm/java-1.8.0-openjdk/jre/lib/ext:/usr/lib/jvm/java-1.8.0-openjdk/lib/ext:/home/nacos/plugins/health:/home/nacos/plugins/cmdb:/home/nacos/plugins/mysql -Xloggc:/home/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dnacos.home=/home/nacos -jar /home/nacos/target/nacos-server.jar  --spring.config.additional-location=/home/nacos/init.d/,file:/home/nacos/conf/'
+ JAVA_OPT=' -server -Xms1g -Xmx1g -Xmn512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m -XX:-OmitStackTraceInFastThrow -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/home/nacos/logs/java_heapdump.hprof -XX:-UseLargePages -Dnacos.member.list= -Djava.ext.dirs=/usr/lib/jvm/java-1.8.0-openjdk/jre/lib/ext:/usr/lib/jvm/java-1.8.0-openjdk/lib/ext:/home/nacos/plugins/health:/home/nacos/plugins/cmdb:/home/nacos/plugins/mysql -Xloggc:/home/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dnacos.home=/home/nacos -jar /home/nacos/target/nacos-server.jar  --spring.config.additional-location=/home/nacos/init.d/,file:/home/nacos/conf/ --spring.config.name=application,custom'
+ JAVA_OPT=' -server -Xms1g -Xmx1g -Xmn512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m -XX:-OmitStackTraceInFastThrow -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/home/nacos/logs/java_heapdump.hprof -XX:-UseLargePages -Dnacos.member.list= -Djava.ext.dirs=/usr/lib/jvm/java-1.8.0-openjdk/jre/lib/ext:/usr/lib/jvm/java-1.8.0-openjdk/lib/ext:/home/nacos/plugins/health:/home/nacos/plugins/cmdb:/home/nacos/plugins/mysql -Xloggc:/home/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dnacos.home=/home/nacos -jar /home/nacos/target/nacos-server.jar  --spring.config.additional-location=/home/nacos/init.d/,file:/home/nacos/conf/ --spring.config.name=application,custom --logging.config=/home/nacos/conf/nacos-logback.xml'
+ JAVA_OPT=' -server -Xms1g -Xmx1g -Xmn512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m -XX:-OmitStackTraceInFastThrow -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/home/nacos/logs/java_heapdump.hprof -XX:-UseLargePages -Dnacos.member.list= -Djava.ext.dirs=/usr/lib/jvm/java-1.8.0-openjdk/jre/lib/ext:/usr/lib/jvm/java-1.8.0-openjdk/lib/ext:/home/nacos/plugins/health:/home/nacos/plugins/cmdb:/home/nacos/plugins/mysql -Xloggc:/home/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dnacos.home=/home/nacos -jar /home/nacos/target/nacos-server.jar  --spring.config.additional-location=/home/nacos/init.d/,file:/home/nacos/conf/ --spring.config.name=application,custom --logging.config=/home/nacos/conf/nacos-logback.xml --server.max-http-header-size=524288'
+ echo 'Nacos is starting, you can docker logs your container'
Nacos is starting, you can docker logs your container
+ exec /usr/lib/jvm/java-1.8.0-openjdk/bin/java -server -Xms1g -Xmx1g -Xmn512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m -XX:-OmitStackTraceInFastThrow -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/home/nacos/logs/java_heapdump.hprof -XX:-UseLargePages -Dnacos.member.list= -Djava.ext.dirs=/usr/lib/jvm/java-1.8.0-openjdk/jre/lib/ext:/usr/lib/jvm/java-1.8.0-openjdk/lib/ext:/home/nacos/plugins/health:/home/nacos/plugins/cmdb:/home/nacos/plugins/mysql -Xloggc:/home/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dnacos.home=/home/nacos -jar /home/nacos/target/nacos-server.jar --spring.config.additional-location=/home/nacos/init.d/,file:/home/nacos/conf/ --spring.config.name=application,custom --logging.config=/home/nacos/conf/nacos-logback.xml --server.max-http-header-size=524288

         ,--.
       ,--.'|
   ,--,:  : |                                           Nacos 2.0.3
,`--.'`|  ' :                       ,---.               Running in cluster mode, All function modules
|   :  :  | |                      '   ,'\   .--.--.    Port: 8848
:   |   \ | :  ,--.--.     ,---.  /   /   | /  /    '   Pid: 1
|   : '  '; | /       \   /     \.   ; ,. :|  :  /`./   Console: http://192.172.0.20:8848/nacos/index.html
'   ' ;.    ;.--.  .-. | /    / ''   | |: :|  :  ;_
|   | | \   | \__\/: . ..    ' / '   | .; : \  \    `.      https://nacos.io
'   : |  ; .' ," .--.; |'   ; :__|   :    |  `----.   \
|   | '`--'  /  /  ,.  |'   | '.'|\   \  /  /  /`--'  /
'   : |     ;  :   .'   \   :    : `----'  '--'.     /
;   |.'     |  ,     .-./\   \  /            `--'---'
'---'        `--`---'     `----'

2022-07-22 12:16:04,273 INFO The server IP list of Nacos is [192.172.0.21:8848, 192.172.0.22:8848]

2022-07-22 12:16:05,274 INFO Nacos is starting...

2022-07-22 12:16:06,275 INFO Nacos is starting...

2022-07-22 12:16:07,275 INFO Nacos is starting...

2022-07-22 12:16:08,279 INFO Nacos is starting...

2022-07-22 12:16:09,310 INFO Nacos is starting...

2022-07-22 12:16:10,311 INFO Nacos is starting...

2022-07-22 12:16:11,311 INFO Nacos is starting...

2022-07-22 12:16:12,311 INFO Nacos is starting...

2022-07-22 12:16:13,312 INFO Nacos is starting...

2022-07-22 12:16:14,314 INFO Nacos is starting...

2022-07-22 12:16:14,324 INFO Nacos started successfully in cluster mode. use external storage

（2）、启动第二个容器

docker run -it \
-e PREFER_HOST_MODE=ip \
-e MODE=cluster \
-e NACOS_SERVERS="192.172.0.20:8848 192.172.0.22:8848" \
-e SPRING_DATASOURCE_PLATFORM=mysql \
-e MYSQL_SERVICE_HOST=192.172.0.10 \
-e MYSQL_SERVICE_PORT=3306 \
-e MYSQL_SERVICE_USER=root \
-e MYSQL_SERVICE_PASSWORD=123456 \
-e MYSQL_SERVICE_DB_NAME=nacos_config \
-e MYSQL_SERVICE_DB_PARAM='characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useSSL=false&useUnicode=true&serverTimezone=UTC' \
-p 9904:8848 \
--name nacos4 \
--net newnet \
--ip 192.172.0.21 \
--restart=always nacos/nacos-server:2.0.3

在服务器中执行时，去掉\变成一行再执行：

docker run -it -e PREFER_HOST_MODE=ip -e MODE=cluster -e NACOS_SERVERS="192.172.0.20:8848 192.172.0.22:8848" -e SPRING_DATASOURCE_PLATFORM=mysql -e MYSQL_SERVICE_HOST=192.172.0.10 -e MYSQL_SERVICE_PORT=3306 -e MYSQL_SERVICE_USER=root -e MYSQL_SERVICE_PASSWORD=123456 -e MYSQL_SERVICE_DB_NAME=nacos_config -e MYSQL_SERVICE_DB_PARAM='characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useSSL=false&useUnicode=true&serverTimezone=UTC' -p 9904:8848 --name nacos4 --net newnet --ip 192.172.0.21 --restart=always nacos/nacos-server:2.0.3

（3）、启动第三个容器

docker run -it \
-e PREFER_HOST_MODE=ip \
-e MODE=cluster \
-e NACOS_SERVERS="192.172.0.20:8848 192.172.0.21:8848" \
-e SPRING_DATASOURCE_PLATFORM=mysql \
-e MYSQL_SERVICE_HOST=192.172.0.10 \
-e MYSQL_SERVICE_PORT=3306 \
-e MYSQL_SERVICE_USER=root \
-e MYSQL_SERVICE_PASSWORD=123456 \
-e MYSQL_SERVICE_DB_NAME=nacos_config \
-e MYSQL_SERVICE_DB_PARAM='characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useSSL=false&useUnicode=true&serverTimezone=UTC' \
-p 9906:8848 \
--name nacos6 \
--net newnet \
--ip 192.172.0.22 \
--restart=always \
nacos/nacos-server:2.0.3

在服务器中执行时，去掉\变成一行再执行：

docker run -it -e PREFER_HOST_MODE=ip -e MODE=cluster -e NACOS_SERVERS="192.172.0.20:8848 192.172.0.21:8848" -e SPRING_DATASOURCE_PLATFORM=mysql -e MYSQL_SERVICE_HOST=192.172.0.10 -e MYSQL_SERVICE_PORT=3306 -e MYSQL_SERVICE_USER=root -e MYSQL_SERVICE_PASSWORD=123456 -e MYSQL_SERVICE_DB_NAME=nacos_config -e MYSQL_SERVICE_DB_PARAM='characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useSSL=false&useUnicode=true&serverTimezone=UTC' -p 9906:8848 --name nacos6 --net newnet --ip 192.172.0.22 --restart=always nacos/nacos-server:2.0.3

注意：1）、云服务器中安全组要放开9902、9904、9906端口。2）、搭建集群时，端口不要设置为9902、9903、9904这种连起来的，而是设置成相差2的。

2、浏览器访问http://ip:9902/nacos

地址栏输入地址后，等待一会就会进入如下界面：

输入用户名密码：nacos/nacos，点击提交后，进入如下页面:

可以看到集群管理的节点列表中有三个节点。至此docker中搭建集群成功。

六、Spring Boot项目部署到tomcat下无法在Nacos中注册服务

使用Nacos作为注册中心的Spring Boot项目，以war包形式部署到服务器上，启动项目发现该服务无法在Nacos中注册。

查看源码，需从nacos的注册类找起，查找后发现，nacos注册类NacosAutoServiceRegistration继承了Spring Cloud中AbstractAutoServiceRegistration, 而在AbstractAutoServiceRegistration中绑定了一个监听事件，监听内置容器启动完成事件，监听到获取容器端口后向注册中心注册。

@EventListener({WebServerInitializedEvent.class})
    public void bind(WebServerInitializedEvent event) {
        ApplicationContext context = event.getApplicationContext();
        if (!(context instanceof ConfigurableWebServerApplicationContext) ||
         !"management".equals(((ConfigurableWebServerApplicationContext)context).getServerNamespace())) {
            this.port.compareAndSet(0, event.getWebServer().getPort());
            this.start();
        }
 
}

而使用外部容器时，不能监听到事件，所以自动注册失败。

解决方案：可获取外部tomcat自动设置端口

使用@PostConstruct注解

@PostContruct是Java自带的注解，在方法上加该注解会在项目启动的时候执行该方法，也可以理解为在spring容器初始化的时候执行该方法。

/**
 * 系统初始化操作
 */
@Configuration
@Slf4j
public class WebAppConfig {

    @Autowired
    private NacosRegistration registration;

    @Autowired
    private NacosAutoServiceRegistration nacosAutoServiceRegistration;

    @Value("${spring.profiles.active}")
    private String env;


    /**
     * 将服务注册到nacos
     */
    @PostConstruct
    public void serverRegisterToNacos() {
        String systemENV = env;
        if (registration != null && StrUtil.isNotEmpty(systemENV) && !systemENV.equals("dev")) {
            try {
                Integer tomcatPort = new Integer(SpringUtil.getTomcatPort());
                //设置端口号
                registration.setPort(tomcatPort);
                //将服务注册到nacos
                nacosAutoServiceRegistration.start();
            } catch (Exception e) {
                log.error("获取外部Tomcat端口异常：", e);
            }
        }
    }
}

工具类：

public class SpringUtil {

    /**
     * 获取外部tomcat端口
     *
     * @return
     */
    public static String getTomcatPort() throws Exception {
        MBeanServer beanServer = ManagementFactory.getPlatformMBeanServer();
        Set<ObjectName> objectNames = beanServer.queryNames(new ObjectName("*:type=Connector,*"), Query.match(Query.attr("protocol"), Query.value("HTTP/1.1")));
        String port = objectNames.iterator().next().getKeyProperty("port");
        return port;
    }
}

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原文地址：https://www.cnblogs.com/zwh0910/p/16483429.html

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