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Nacos cluster construction
2022-07-21 15:05:00 【Ayin's study notes】
Nacos Cluster building
1. Cluster structure diagram
Official Nacos Cluster diagram ：
It includes 3 individual nacos node , Then a load balancer agent 3 individual Nacos, Here, the load balancer can use nginx.
Our planned cluster structure ：
Three nacos The address of the node ：
| node | ip | port |
|---|---|---|
| nacos1 | 192.168.150.1 | 8845 |
| nacos2 | 192.168.150.1 | 8846 |
| nacos3 | 192.168.150.1 | 8847 |
2. Set up the cluster
The basic steps of building a cluster ：
- Build a database , Initialize database table structure
- download nacos Installation package
- To configure nacos
- start-up nacos colony
- nginx Reverse proxy
2.1. Initialize database
Nacos The default data is stored in an embedded database Derby in , Not a database available for production .
The official recommended best practice is to use a highly available database cluster with master and slave , The highly available database of master-slave mode can refer to Intellectual education Follow up master courses .
Here we take the single point database as an example . First create a new database , Name it nacos, Then import the following SQL：
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(50) DEFAULT NULL COMMENT 'source ip',
`app_name` varchar(128) DEFAULT NULL,
`tenant_id` varchar(128) DEFAULT '' COMMENT ' Tenant fields ',
`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 */
/* The name of the table = 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 fields ',
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 */
/* The name of the table = 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(50) DEFAULT NULL COMMENT 'source ip',
`tenant_id` varchar(128) DEFAULT '' COMMENT ' Tenant fields ',
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 */
/* The name of the table = 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(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';
/******************************************/
/* Database full name = nacos_config */
/* The name of the table = 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 */
/* The name of the table = 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, The empty character indicates the entire cluster ',
`quota` int(10) unsigned NOT NULL DEFAULT '0' COMMENT ' The quota ,0 Indicates use default ',
`usage` int(10) unsigned NOT NULL DEFAULT '0' COMMENT ' Usage quantity ',
`max_size` int(10) unsigned NOT NULL DEFAULT '0' COMMENT ' Maximum size of a single configuration , The unit is byte ,0 Indicates use default ',
`max_aggr_count` int(10) unsigned NOT NULL DEFAULT '0' COMMENT ' Maximum number of aggregate sub configurations ,,0 Indicates use default ',
`max_aggr_size` int(10) unsigned NOT NULL DEFAULT '0' COMMENT ' The maximum sub configuration size of a single aggregate data , The unit is byte ,0 Indicates use default ',
`max_history_count` int(10) unsigned NOT NULL DEFAULT '0' COMMENT ' Maximum number of 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=' colony 、 various Group Capacity information table ';
/******************************************/
/* Database full name = nacos_config */
/* The name of the table = 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 ' Tenant fields ',
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 transformation ';
/******************************************/
/* Database full name = nacos_config */
/* The name of the table = 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 ' The quota ,0 Indicates use default ',
`usage` int(10) unsigned NOT NULL DEFAULT '0' COMMENT ' Usage quantity ',
`max_size` int(10) unsigned NOT NULL DEFAULT '0' COMMENT ' Maximum size of a single configuration , The unit is byte ,0 Indicates use 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 ' The maximum sub configuration size of a single aggregate data , The unit is byte ,0 Indicates use default ',
`max_history_count` int(10) unsigned NOT NULL DEFAULT '0' COMMENT ' Maximum number of 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');
2.2. download nacos
nacos stay GitHub There is a download address on ：https://github.com/alibaba/nacos/tags, You can choose any version to download .
Only used in this example 1.4.1 edition ！
2.3. To configure Nacos
1、 Unzip the compressed package to any non Chinese Directory ！
Directory description ：
- bin： The startup script
- conf： The configuration file
2、 Get into nacos Of conf Catalog , Modify the configuration file cluster.conf.example, Rename it to cluster.conf：
3、 Add content to this file ：
127.0.0.1:8845
127.0.0.1.8846
127.0.0.1.8847
4、 And then modify application.properties file , Add database configuration ;
spring.datasource.platform=mysql
db.num=1
db.url.0=jdbc:mysql://127.0.0.1:3306/nacos?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useUnicode=true&useSSL=false&serverTimezone=UTC
db.user.0=root
db.password.0=12345
2.4. start-up
1、 take nacos Copy three copies of the folder , Named as ：nacos1、nacos2、nacos3;
2、 Then modify the... In the three folders respectively application.properties;
nacos1:
server.port=8845
nacos2:
server.port=8846
nacos3:
server.port=8847
3、 In three folders bin Start these three under the directory nacos node ：
startup.cmd
2.5.nginx Reverse proxy
1、 download nginx Installation package ;
2、 Unzip to any non Chinese Directory ：
3、 modify conf/nginx.conf file , stay upstream nacos-cluster Three nacos The address of , And in server Configure listening ports and localhost, That is to say, visit later nacos Can pass 80 Ports can be accessed directly , The specific configuration is as follows ：
upstream nacos-cluster {
server 127.0.0.1:8845;
server 127.0.0.1:8846;
server 127.0.0.1:8847;
}
server {
listen 80;
server_name localhost;
location /nacos {
proxy_pass http://nacos-cluster;
}
}
4、 start-up nginx, By command start nginx.exe start-up , Then visit... In the browser ：http://localhost/nacos that will do .
5、 In the code application.yml The file configuration is as follows , Due to the use of nginx Yes nacos Load balancing , So what you need to fill in the service address is nginx Configured 80 port ：
spring:
cloud:
nacos:
server-addr: localhost:80 # Nacos Address
2.6. Optimize
When actually deployed , Need to do reverse proxy for nginx Set a domain name for the server , In this way, if there is a subsequent server migration nacos There is no need to change the configuration of the client .
Nacos Each node should be deployed to multiple different servers , Do a good job in disaster recovery and isolation
4、 start-up nginx, By command start nginx.exe start-up , Then visit... In the browser ：http://localhost/nacos that will do .
5、 In the code application.yml The file configuration is as follows , Due to the use of nginx Yes nacos Load balancing , So what you need to fill in the service address is nginx Configured 80 port ：
```yaml
spring:
cloud:
nacos:
server-addr: localhost:80 # Nacos Address
2.6. Optimize
When actually deployed , Need to do reverse proxy for nginx Set a domain name for the server , In this way, if there is a subsequent server migration nacos There is no need to change the configuration of the client .
Nacos Each node should be deployed to multiple different servers , Do a good job in disaster recovery and isolation
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