Use Docker to complete the Nacos cluster deployment

Preface The distance from the last article has been quite long, because the author went to Changsha to play for a while. Last time, I showed how to install and deploy Nacos1.3.1 on Windows. This time, I plan to deploy it on virtual machines using Docker. The system I use is CentOS7.5.

Nacos Image pull

After making sure docker is installed and running successfully, execute the following commands:

docker pull nacos/nacos-server
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Tip: The author used Tencent cloud server to pull the image slowly, and the problem of changing the image source of USTC and netease was not solved, so he finally used Tencent’s own image sourcehttps:mirror.ccs.tencentyun.comAfter downloading speed take off. After successfully pulling the image, use the image command to find that the image does exist (Nacos version 1.3.2 at the time of this writing

Database Configuration

As is known to all,Nacos clusters need to connect to MySQL databases deployed master-slave. For convenience, the author does not use MySQL databases deployed master-slave here. In the past, Nacos did not support MySQL8.0+, but a recent update has enabled Nacos to support MySQL8.0+. Here, I used Docker to deploy MySQL 8.0.20, and used SQLYog to connect to MySQL database. Create a new database named nacOS, use the SQL file that comes with nacOS to create the corresponding table structure, and paste the contents of 1.3.2 nacos-mysql.sql file here:

Licensed under the Apache License, Version 2.0 (the "License"); 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. */

/ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * /
/* Database full name = nacos_config */
/* Table name = 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 'Creation time',
  `gmt_modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 'Modification time',
  `src_user` text COMMENT 'source user',
  `src_ip` varchar(20) DEFAULT NULL COMMENT 'source ip',
  `app_name` varchar(128) DEFAULT NULL,
  `tenant_id` varchar(128) DEFAULT ' ' COMMENT 'Tenant Field',
  `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';

/ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * /
/* Database full name = nacos_config */
/* Table name = 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 'content',
  `gmt_modified` datetime NOT NULL COMMENT 'Modification time',
  `app_name` varchar(128) DEFAULT NULL,
  `tenant_id` varchar(128) DEFAULT ' ' COMMENT 'Tenant Field'.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='Add tenant field';


/ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * /
/* Database full name = nacos_config */
/* Table name = 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 'Creation time',
  `gmt_modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 'Modification time',
  `src_user` text COMMENT 'source user',
  `src_ip` varchar(20) DEFAULT NULL COMMENT 'source ip',
  `tenant_id` varchar(128) DEFAULT ' ' COMMENT 'Tenant Field'.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';

/ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * /
/* Database full name = nacos_config */
/* Table name = 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 'Creation time',
  `gmt_modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 'Modification time',
  `src_user` text COMMENT 'source user',
  `src_ip` varchar(20) 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';

/ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * /
/* Database full name = nacos_config */
/* Table name = 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';

/ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * /
/* Database full name = nacos_config */
/* Table name = group_capacity */
/ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * /
CREATE TABLE `group_capacity` (
  `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT COMMENT 'primary key ID',
  `group_id` varchar(128) NOT NULL DEFAULT ' ' COMMENT 'Group ID, null character for whole cluster ',
  `quota` int(10) unsigned NOT NULL DEFAULT '0' COMMENT 'Quota, 0 means default',
  `usage` int(10) unsigned NOT NULL DEFAULT '0' COMMENT 'Usage',
  `max_size` int(10) unsigned NOT NULL DEFAULT '0' COMMENT 'Maximum size of a single configuration, in bytes, with 0 indicating default',
  `max_aggr_count` int(10) unsigned NOT NULL DEFAULT '0' COMMENT 'Maximum number of aggregate sub-configurations, where 0 indicates default',
  `max_aggr_size` int(10) unsigned NOT NULL DEFAULT '0' COMMENT 'Upper subconfiguration size of a single aggregate data, in bytes, with 0 indicating default.',
  `max_history_count` int(10) unsigned NOT NULL DEFAULT '0' COMMENT 'Maximum change history',
  `gmt_create` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 'Creation time',
  `gmt_modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 'Modification time'.PRIMARY KEY (`id`),
  UNIQUE KEY `uk_group_id` (`group_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='Cluster and Group Capacity Information Table';

/ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * /
/* Database full name = nacos_config */
/* Table name = 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(20) DEFAULT NULL,
  `op_type` char(10) DEFAULT NULL,
  `tenant_id` varchar(128) DEFAULT ' ' COMMENT 'Tenant Field'.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='Multi-tenant Conversion';


/ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * /
/* Database full name = nacos_config */
/* Table name = tenant_capacity */
/ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * /
CREATE TABLE `tenant_capacity` (
  `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT COMMENT 'primary key ID',
  `tenant_id` varchar(128) NOT NULL DEFAULT ' ' COMMENT 'Tenant ID',
  `quota` int(10) unsigned NOT NULL DEFAULT '0' COMMENT 'Quota, 0 means default',
  `usage` int(10) unsigned NOT NULL DEFAULT '0' COMMENT 'Usage',
  `max_size` int(10) unsigned NOT NULL DEFAULT '0' COMMENT 'Maximum size of a single configuration, in bytes, with 0 indicating default',
  `max_aggr_count` int(10) unsigned NOT NULL DEFAULT '0' COMMENT 'Maximum number of aggregate sub-configurations',
  `max_aggr_size` int(10) unsigned NOT NULL DEFAULT '0' COMMENT 'Upper subconfiguration size of a single aggregate data, in bytes, with 0 indicating default.',
  `max_history_count` int(10) unsigned NOT NULL DEFAULT '0' COMMENT 'Maximum change history',
  `gmt_create` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 'Creation time',
  `gmt_modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 'Modification time'.PRIMARY KEY (`id`),
  UNIQUE KEY `uk_tenant_id` (`tenant_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='Tenant Capacity Information Table';


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 'Creation time',
  `gmt_modified` bigint(20) NOT NULL COMMENT 'Modification time'.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');

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Create the Nacos container

Note: Please change the IP address in the following instructions to the IP address of your machine, the database library name and account password as needed to change my-nacos1-> use port 8846

docker run -d \
-e PREFER_HOST_MODE=hostname \
-e MODE=cluster \
-e NACOS_APPLICATION_PORT=8846 \
-e NACOS_SERVERS="192.168.248.129:8846 192.168.248.129:8847 192.168.248.129:8848" \
-e SPRING_DATASOURCE_PLATFORM=mysql \
-e MYSQL_SERVICE_HOST=192.168.248.129 \
-e MYSQL_SERVICE_PORT=3306 \
-e MYSQL_SERVICE_USER=root \
-e MYSQL_SERVICE_PASSWORD=1234 \
-e MYSQL_SERVICE_DB_NAME=nacos \
-e NACOS_SERVER_IP=192.168.248.129 \
-p 8846:8846 \
--name my-nacos1 \
nacos/nacos-server
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My-nacos2 -> uses port 8847

docker run -d \
-e PREFER_HOST_MODE=hostname \
-e MODE=cluster \
-e NACOS_APPLICATION_PORT=8847 \
-e NACOS_SERVERS="192.168.248.129:8846 192.168.248.129:8847 192.168.248.129:8848" \
-e SPRING_DATASOURCE_PLATFORM=mysql \
-e MYSQL_SERVICE_HOST=192.168.248.129 \
-e MYSQL_SERVICE_PORT=3306 \
-e MYSQL_SERVICE_USER=root \
-e MYSQL_SERVICE_PASSWORD=1234 \
-e MYSQL_SERVICE_DB_NAME=nacos \
-e NACOS_SERVER_IP=192.168.248.129 \
-p 8847:8847 \
--name my-nacos2 \
nacos/nacos-server
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My-nacos3 -> uses port 8848

docker run -d \
-e PREFER_HOST_MODE=hostname \
-e MODE=cluster \
-e NACOS_APPLICATION_PORT=8848 \
-e NACOS_SERVERS="192.168.248.129:8846 192.168.248.129:8847 192.168.248.129:8848" \
-e SPRING_DATASOURCE_PLATFORM=mysql \
-e MYSQL_SERVICE_HOST=192.168.248.129 \
-e MYSQL_SERVICE_PORT=3306 \
-e MYSQL_SERVICE_USER=root \
-e MYSQL_SERVICE_PASSWORD=1234 \
-e MYSQL_SERVICE_DB_NAME=nacos \
-e NACOS_SERVER_IP=192.168.248.129 \
-p 8848:8848 \
--name my-nacos3 \
nacos/nacos-server
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After executing the above three instructions, we have three Nacos containers. Please note: before running the Nacos container, please run the MySQL container connected to it Note that if you are using a 1 core 2G student cloud server you may only be able to run one NACOS container and will automatically exit when running the second one because it is not configured enough… The problem was solved after the author chose to use the virtual machine in his computer after stepping on the pit hereThis is when we visithttp://192.168.248.129:8846/nacos.http://192.168.248.129:8847/nacos.http://192.168.248.129:8848/nacosEnter the default account passwordnacosIn the management background, we found that the cluster has been deployed:

Use Nginx reverse proxy Nacos cluster

Using Docker pull nginx to pull the latest version of nginx, create an nginx container using the following instructions:

docker run --name my-nginx -p 8080:8080 -d nginx
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After obtaining an nginx container, use the following instructions:

Docker cp your container id: / etc/nginx/nginx. Conf/usr/local/nginx/conf/nginx. ConfCopy the code

This step copies the nginx configuration file from the container to the /usr/local/nginx/conf directory on the host. Use the Docker Stop container ID and docker RM container ID to stop and delete the previously created nginx container.

docker run --name my-nginx -v /usr/local/nginx/conf/nginx.conf:/etc/nginx/nginx.conf:ro -p 8080:8080 -d nginx
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Use this command to get a new nginx container, and we by modifying the host machine in the/usr/local/nginx/conf/nginx. Conf file modified nginx containers in the configuration file, we use the command vi / usr/local/nginx/conf/nginx. Use the conf I key into the modified model, add the following at the end of the file

Upstream cluster {server 192.168.248.129:8846; Server 192.168.248.129:8847; Server 192.168.248.129:8848; } server { listen 8080; server_name _; location / { proxy_pass http://cluster; }}Copy the code

After the modification is complete, esc exits the modification mode,shift+zz completes the modification and exits. usedocker restart my-nginxAccess after restarting the nginx containerhttp://192.168.248.129:8080/nacosThe discovery goes into the nacOS management background, so using Nginx reverse proxy nacOS clustering is also done.

The content of this blog also ends here, if you have any questions about the blog content, you can contact the author by private letter. If this article is useful to you, I hope you can click a like, thank you ~

Refer to the article

BDawn: Deploy nacOS clusters using Docker.