【Docker】安装 Nacos 2.0.3（单机版）

准备工作

挂载配置文件application.properties

# 配置文件存放目录
mkdir /root/docker/nacos/conf

application.properties内容如下，该文件是通过docker cp命令原封不动的从nacos容器中拷贝出来的

# spring
server.servlet.contextPath=${SERVER_SERVLET_CONTEXTPATH:/nacos}
server.contextPath=/nacos
server.port=${NACOS_APPLICATION_PORT:8848}
spring.datasource.platform=${SPRING_DATASOURCE_PLATFORM:""}
nacos.cmdb.dumpTaskInterval=3600
nacos.cmdb.loadDataAtStart=false
db.num=${MYSQL_DATABASE_NUM:1}
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

nacos.naming.distro.taskDispatchThreadCount=10
nacos.naming.distro.taskDispatchPeriod=200
nacos.naming.distro.batchSyncKeyCount=1000
nacos.naming.distro.initDataRatio=0.9
nacos.naming.distro.syncRetryDelay=5000
nacos.naming.data.warmup=true

注意一下
低版本(1.4.x)挂载的文是/home/nacos/init.d/custom.properties
而2.0.3版本挂载的文件是/home/nacos/conf/application.properties
也可进入容器自行查看nacos目录结构

docker-compose 构建

version: '3'
services:
  nacos:
    image: nacos/nacos-server:v2.0.3
    container_name: nacos
    restart: always
    volumes:
      - "/root/docker/nacos/data:/home/nacos/data"
      - "/root/docker/nacos/logs:/home/nacos/logs"
      - "/root/docker/nacos/conf/application.properties:/home/nacos/conf/application.properties"
    environment:
      - MODE=standalone
      - PREFER_HOST_MODE=ip
      - NACOS_SERVER_IP=部署nacos机器的公网ip
      - NACOS_SERVER_PORT=8848
      - JVM_XMS=128m
      - JVM_XMX=128m
      - JVM_XMN=64m
    ports:
      - 8848:8848
      - 9848:9848
      - 9849:9849

这里需要说明几点
1 如果不加jvm参数的话，nacos会很占服务器内存。测试了下不加任何jvm参数启动后实际占用内存900多M，加了上述jvm参数后降低到440多M
2 Nacos2.x.x版本相比1.x新增了gRPC的通信方式，因此需要添加两个映射端口9848、9849，否则会报错：com.alibaba.nacos.api.exception.NacosException:Client not connected,current status:STARTING

Nacos 控制台

link: http://host:8848/nacos/

官方配置参数

Nacos Docker官方文档

name	description	option
MODE	cluster模式/standalone模式	cluster/standalone default cluster
NACOS_SERVERS	nacos cluster地址	eg. ip1,ip2,ip3
PREFER_HOST_MODE	是否支持hostname	hostname/ip default ip
NACOS_SERVER_PORT	nacos服务器端口	default 8848
NACOS_SERVER_IP	多网卡下的自定义nacos服务器IP
SPRING_DATASOURCE_PLATFORM	standalone 支持 mysql	mysql / empty default empty
MYSQL_MASTER_SERVICE_HOST	mysql 主节点host
MYSQL_MASTER_SERVICE_PORT	mysql 主节点端口	default : 3306
MYSQL_MASTER_SERVICE_DB_NAME	mysql 主节点数据库
MYSQL_MASTER_SERVICE_USER	数据库用户名
MYSQL_MASTER_SERVICE_PASSWORD	数据库密码
MYSQL_SLAVE_SERVICE_HOST	mysql从节点host
MYSQL_SLAVE_SERVICE_PORT	mysql从节点端口	default :3306
MYSQL_DATABASE_NUM	数据库数量	default :2
JVM_XMS	-Xms	default :2g
JVM_XMX	-Xmx	default :2g
JVM_XMN	-Xmn	default :1g
JVM_MS	-XX:MetaspaceSize	default :128m
JVM_MMS	-XX:MaxMetaspaceSize	default :320m
NACOS_DEBUG	开启远程调试	y/n default :n
TOMCAT_ACCESSLOG_ENABLED	server.tomcat.accesslog.enabled	default :false