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Deploying and Configuring Nacos Using Docker

Tech May 9 13

Pull Nacos Image

Retrieve the official Nacos server image from Docker Hub.

podman pull nacos/nacos-server

Run Nacos Container

Launch a standalone instance mapped to host port 8848:

podman run -d -p 8848:8848 -e MODE=standalone --name nacos_svr nacos/nacos-server:latest

To connect Nacos to an external MySQL database, specify connection parameters:

podman run -d --name nacos_svr \
  -e MODE=standalone \
  -e SPRING_DATASOURCE_PLATFORM=mysql \
  -e MYSQL_SERVICE_HOST=192.168.211.128 \
  -e MYSQL_SERVICE_PORT=3306 \
  -e MYSQL_SERVICE_DB_NAME=nacos_cfg \
  -e MYSQL_SERVICE_USER=root \
  -e MYSQL_SERVICE_PASSWORD=123456 \
  -p 8848:8848 \
  nacos/nacos-server:latest

Additional environment variables can disable debug mode:

podman run -d --name nacos_svr \
  --env MODE=standalone \
  --env SPRING_DATASOURCE_PLATFORM=mysql \
  --env MYSQL_SERVICE_HOST=192.168.211.128 \
  --env MYSQL_SERVICE_PORT=3306 \
  --env MYSQL_SERVICE_DB_NAME=nacos_cfg \
  --env MYSQL_SERVICE_USER=root \
  --env MYSQL_SERVICE_PASSWORD=123456 \
  --env NACOS_DEBUG=n \
  -p 8848:8848 \
  nacos/nacos-server

Modify Configuration Inside Container

Access the running container shell:

podman exec -it nacos_svr bash

Edit the primary configuration file:

vi /home/nacos/conf/application.properties

Relevant properties for database connectivity:

  • db.url.0 — primary DB connection string
  • db.url.1 — replica DB connection string (optional)
  • db.user — database username
  • db.password — database password

For single-instance setups, omit or comment out db.url.1.

Web console is accessible at http://192.168.211.128:8848/nacos/index.html.

Prepare Data base Schema

Create the required schema and tables before starting Nacos with MySQL persistence. Fetch the initialization script from the Nacos repository:
https://github.com/alibaba/nacos/blob/master/config/src/main/resources/META-INF/nacos-db.sql

Example schema creation and essential tables:

CREATE DATABASE IF NOT EXISTS nacos_cfg;
USE nacos_cfg;

CREATE TABLE config_data (
  rec_id BIGINT AUTO_INCREMENT PRIMARY KEY,
  data_key VARCHAR(255) NOT NULL,
  grp_key VARCHAR(255) DEFAULT NULL,
  payload LONGTEXT NOT NULL,
  checksum VARCHAR(32) DEFAULT NULL,
  created_at DATETIME NOT NULL DEFAULT '2010-05-05 00:00:00',
  updated_at DATETIME NOT NULL DEFAULT '2010-05-05 00:00:00',
  src_user TEXT,
  src_address VARCHAR(20) DEFAULT NULL,
  app_label VARCHAR(128) DEFAULT NULL,
  namespace_id VARCHAR(128) DEFAULT '',
  description VARCHAR(256) DEFAULT NULL,
  usage VARCHAR(64) DEFAULT NULL,
  effect VARCHAR(64) DEFAULT NULL,
  format VARCHAR(64) DEFAULT NULL,
  schema_body TEXT,
  UNIQUE KEY uniq_key_grp_ns (data_key, grp_key, namespace_id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='Configuration entries';

CREATE TABLE agg_config_data (
  rec_id BIGINT AUTO_INCREMENT PRIMARY KEY,
  data_key VARCHAR(255) NOT NULL,
  grp_key VARCHAR(255) NOT NULL,
  datum_key VARCHAR(255) NOT NULL,
  payload LONGTEXT NOT NULL,
  updated_at DATETIME NOT NULL DEFAULT '2010-05-05 00:00:00',
  app_label VARCHAR(128) DEFAULT NULL,
  namespace_id VARCHAR(128) DEFAULT '',
  UNIQUE KEY uniq_agg_key_grp_ns_datum (data_key, grp_key, namespace_id, datum_key)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='Aggregated configuration items';

CREATE TABLE beta_config_data (
  rec_id BIGINT AUTO_INCREMENT PRIMARY KEY,
  data_key VARCHAR(255) NOT NULL,
  grp_key VARCHAR(128) NOT NULL,
  app_label VARCHAR(128) DEFAULT NULL,
  payload LONGTEXT NOT NULL,
  beta_hosts VARCHAR(1024) DEFAULT NULL,
  checksum VARCHAR(32) DEFAULT NULL,
  created_at DATETIME NOT NULL DEFAULT '2010-05-05 00:00:00',
  updated_at DATETIME NOT NULL DEFAULT '2010-05-05 00:00:00',
  src_user TEXT,
  src_address VARCHAR(20) DEFAULT NULL,
  namespace_id VARCHAR(128) DEFAULT '',
  UNIQUE KEY uniq_beta_key_grp_ns (data_key, grp_key, namespace_id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='Beta-release configurations';

CREATE TABLE tagged_config_data (
  rec_id BIGINT AUTO_INCREMENT PRIMARY KEY,
  data_key VARCHAR(255) NOT NULL,
  grp_key VARCHAR(128) NOT NULL,
  namespace_id VARCHAR(128) DEFAULT '',
  tag_label VARCHAR(128) NOT NULL,
  app_label VARCHAR(128) DEFAULT NULL,
  payload LONGTEXT NOT NULL,
  checksum VARCHAR(32) DEFAULT NULL,
  created_at DATETIME NOT NULL DEFAULT '2010-05-05 00:00:00',
  updated_at DATETIME NOT NULL DEFAULT '2010-05-05 00:00:00',
  src_user TEXT,
  src_address VARCHAR(20) DEFAULT NULL,
  UNIQUE KEY uniq_tag_key_grp_ns_tag (data_key, grp_key, namespace_id, tag_label)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='Tagged configuration entries';

CREATE TABLE config_tag_links (
  link_id BIGINT NOT NULL,
  tag_label VARCHAR(128) NOT NULL,
  tag_kind VARCHAR(64) DEFAULT NULL,
  data_key VARCHAR(255) NOT NULL,
  grp_key VARCHAR(128) NOT NULL,
  namespace_id VARCHAR(128) DEFAULT '',
  seq_id BIGINT AUTO_INCREMENT,
  PRIMARY KEY (seq_id),
  UNIQUE KEY uniq_link_conf_tag (link_id, tag_label, tag_kind),
  INDEX idx_namespace (namespace_id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='Links between configs and tags';

CREATE TABLE group_limits (
  limit_id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
  grp_key VARCHAR(128) NOT NULL DEFAULT '',
  capacity_quota INT UNSIGNED NOT NULL DEFAULT 0,
  used_quota INT UNSIGNED NOT NULL DEFAULT 0,
  max_item_size INT UNSIGNED NOT NULL DEFAULT 0,
  max_agg_items INT UNSIGNED NOT NULL DEFAULT 0,
  max_agg_item_size INT UNSIGNED NOT NULL DEFAULT 0,
  max_history INT UNSIGNED NOT NULL DEFAULT 0,
  created_at DATETIME NOT NULL DEFAULT '2010-05-05 00:00:00',
  updated_at DATETIME NOT NULL DEFAULT '2010-05-05 00:00:00',
  UNIQUE KEY uniq_grp (grp_key)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='Capacity limits per group';

CREATE TABLE historic_config_data (
  origin_id BIGINT UNSIGNED NOT NULL,
  hist_seq BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
  data_key VARCHAR(255) NOT NULL,
  grp_key VARCHAR(128) NOT NULL,
  app_label VARCHAR(128) DEFAULT NULL,
  payload LONGTEXT NOT NULL,
  checksum VARCHAR(32) DEFAULT NULL,
  created_at DATETIME NOT NULL DEFAULT '2010-05-05 00:00:00',
  updated_at DATETIME NOT NULL DEFAULT '2010-05-05 00:00:00',
  src_user TEXT,
  src_address VARCHAR(20) DEFAULT NULL,
  operation VARCHAR(10) DEFAULT NULL,
  namespace_id VARCHAR(128) DEFAULT '',
  INDEX idx_created (created_at),
  INDEX idx_updated (updated_at),
  INDEX idx_datakey (data_key)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='Historical configuration revisions';

CREATE TABLE tenant_limits (
  limit_id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
  tenant_id VARCHAR(128) NOT NULL DEFAULT '',
  capacity_quota INT UNSIGNED NOT NULL DEFAULT 0,
  used_quota INT UNSIGNED NOT NULL DEFAULT 0,
  max_item_size INT UNSIGNED NOT NULL DEFAULT 0,
  max_agg_items INT UNSIGNED NOT NULL DEFAULT 0,
  max_agg_item_size INT UNSIGNED NOT NULL DEFAULT 0,
  max_history INT UNSIGNED NOT NULL DEFAULT 0,
  created_at DATETIME NOT NULL DEFAULT '2010-05-05 00:00:00',
  updated_at DATETIME NOT NULL DEFAULT '2010-05-05 00:00:00',
  UNIQUE KEY uniq_tenant (tenant_id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='Per-tenant capacity settings';

CREATE TABLE tenant_profiles (
  profile_id BIGINT AUTO_INCREMENT PRIMARY KEY,
  access_key VARCHAR(128) NOT NULL,
  tenant_id VARCHAR(128) DEFAULT '',
  tenant_label VARCHAR(128) DEFAULT '',
  tenant_description VARCHAR(256) DEFAULT NULL,
  source VARCHAR(32) DEFAULT NULL,
  created_ts BIGINT NOT NULL,
  updated_ts BIGINT NOT NULL,
  UNIQUE KEY uniq_access_tenant (access_key, tenant_id),
  INDEX idx_tenant (tenant_id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='Tenant metadata';

CREATE TABLE sys_users (
    user_name VARCHAR(50) NOT NULL PRIMARY KEY,
    pwd_hash VARCHAR(500) NOT NULL,
    active BOOLEAN NOT NULL
);

CREATE TABLE sys_roles (
    user_name VARCHAR(50) NOT NULL,
    role_name VARCHAR(50) NOT NULL,
    CONSTRAINT uniq_user_role UNIQUE (user_name, role_name)
);

CREATE TABLE sys_permissions (
    role_name VARCHAR(50) NOT NULL,
    res_path VARCHAR(512) NOT NULL,
    act VARCHAR(8) NOT NULL,
    CONSTRAINT uniq_role_perm UNIQUE (role_name, res_path, act)
);

INSERT INTO sys_users (user_name, pwd_hash, active) VALUES ('nacos', '$2a$10$EuWPZHzz32dJN7jexM34MOeYirDdFAZm2kuWj7VEOJhhZkDrxfvUu', TRUE);

INSERT INTO sys_roles (user_name, role_name) VALUES ('nacos', 'ROLE_ADMIN');
Tags: dockernacosMicroservices
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