Docker部署Nacos（单机/集群）

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注意：本文中的nacos版本为2.2.0

nacos官方文档：

https://nacos.io/zh-cn/docs/quick-start-docker.html

1.单机部署

1.1 安装docker ce 环境

略

1.2 下载nacos镜像

	docker pull nacos/nacos-server

1.3 以单机模式启动nacos

docker run --name nacos \
-e MODE=standalone \
-v /home/nacos/application.properties:/home/nacos/conf/application.properties \
-v /root/nacos/logs:/home/nacos/logs \
-p 8848:8848 -d \
-p 9848:9848 \
--restart always nacos/nacos-server:latest 

命令解析：

命令	含义
-v	Docker容器启动的时候，如果要挂载宿主机的一个目录，可以用-v参数指定
-p	容器内部端口和容器外部端口进行映射，内外端口有映射才能访问。宿主机端口:容器内部端口

以上命令，-v 指定我们启动nacos时使用的配置文件，-p 将容器内启动的nacos默认端口8848映射为主机端口8848供外部使用
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1.4 查看启动的nacos容器

docker ps 

执行结果，可以看到nacos服务（这里笔者已经启用nacos集群，所以此时的nacos为关闭状态）

2.集群部署（一台服务器）

2.1 在单机模式的基础上启动

启动nacos服务1

docker run --name nacos01 \
-e MODE=cluster \
-e NACOS_SERVERS="192.168.31.177:18848 192.168.31.177:28848" \
-e SPRING_DATASOURCE_PLATFORM=mysql \
-v /home/nacos/application.properties:/home/nacos/conf/application.properties \
-v /root/nacos/logs/nacos01:/home/nacos/logs \
-p 8848:8848 \
-d \
-p 9848:9848 \
-p 9849:9849 \
--restart always nacos/nacos-server:latest

启动nacos服务2

docker run --name nacos02 \
-e MODE=cluster \
-e NACOS_SERVERS="192.168.31.177:8848 192.168.31.177:28848" \
-e SPRING_DATASOURCE_PLATFORM=mysql \
-v /home/nacos/application.properties:/home/nacos/conf/application.properties \
-v /root/nacos/logs/nacos01:/home/nacos/logs \
-p 18848:8848 \
-d \
-p 19848:9848 \
-p 19849:9849 \
--restart always nacos/nacos-server:latest

启动nacos服务3

docker run --name nacos03 \
-e MODE=cluster \
-e NACOS_SERVERS="192.168.31.177:18848 192.168.31.177:8848" \
-e SPRING_DATASOURCE_PLATFORM=mysql \
-v /home/nacos/application.properties:/home/nacos/conf/application.properties \
-v /root/nacos/logs/nacos01:/home/nacos/logs \
-p 28848:8848 \
-d \
-p 29848:9848 \
-p 29849:9849 \
--restart always nacos/nacos-server:latest

2.2 查看启动nacos的容器

执行命令

docker ps

可以看到如下结果

进入到日志目录，查看日志可以发现nacos已经正常启动

cd /root/nacos/logs/nacos01
tail -f nacos.log

进入到nacos系统中，可以看到集群节点已经上线

3.常见问题：

1.端口未开放

# 开放端口 8848 18848 28848 ，这里是集群部署，所以是多个端口
firewall-cmd --zone=public --add-port=8848/tcp --permanent
firewall-cmd --zone=public --add-port=18848/tcp --permanent
firewall-cmd --zone=public --add-port=28848/tcp --permanent
# 防火墙重启
firewall-cmd --reload
# 查看开放的端口
firewall-cmd --list-ports

2.No DataSource Set 数据库配置有问题

可以参考 nacos官方docker示例 中的application.properties

### Connect URL of DB:
db.url.0=jdbc:mysql://127.0.0.1:3306/nacos_config?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useUnicode=true&useSSL=false&serverTimezone=UTC&useSSL=false&allowPublicKeyRetrieval=true
db.user.0=root
db.password.0=123456

重点是sql初始化的平台，需要在启动时传入或写死

spring.sql.init.platform=${SPRING_DATASOURCE_PLATFORM:}

3.异常：receive invalid redirect request from peer

请求出现了非责任节点的转发，可参考nacos-issues-6149
解决方式

### Specify local server's IP:
nacos.inetutils.ip-address=服务器ip

---

4.nacos官方docker示例中的application.properties

#
# Copyright 1999-2021 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.
#
#*************** Spring Boot Related Configurations ***************#
### Default web context path:
server.servlet.contextPath=/nacos
### Include message field
server.error.include-message=ALWAYS
### Default web server port:
server.port=8848
#*************** Network Related Configurations ***************#
### If prefer hostname over ip for Nacos server addresses in cluster.conf:
# nacos.inetutils.prefer-hostname-over-ip=false
### Specify local server's IP:
# nacos.inetutils.ip-address=
#*************** Config Module Related Configurations ***************#
### Deprecated configuration property, it is recommended to use `spring.sql.init.platform` replaced.
#spring.datasource.platform=${SPRING_DATASOURCE_PLATFORM:}
spring.sql.init.platform=${SPRING_DATASOURCE_PLATFORM:}
# nacos.plugin.datasource.log.enabled=true
### Count of DB:
db.num=1
### Connect URL of DB:
db.url.0=jdbc:mysql://127.0.0.1:3306/nacos_config?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useUnicode=true&useSSL=false&serverTimezone=UTC&useSSL=false&allowPublicKeyRetrieval=true
db.user.0=root
db.password.0=123456
### Connection pool configuration: hikariCP
db.pool.config.connectionTimeout=30000
db.pool.config.validationTimeout=10000
db.pool.config.maximumPoolSize=20
db.pool.config.minimumIdle=2
#*************** Naming Module Related Configurations ***************#
### Data dispatch task execution period in milliseconds:
### If enable data warmup. If set to false, the server would accept request without local data preparation:
# nacos.naming.data.warmup=true
### If enable the instance auto expiration, kind like of health check of instance:
# nacos.naming.expireInstance=true
### will be removed and replaced by `nacos.naming.clean` properties
nacos.naming.empty-service.auto-clean=true
nacos.naming.empty-service.clean.initial-delay-ms=50000
nacos.naming.empty-service.clean.period-time-ms=30000
### Add in 2.0.0
### The interval to clean empty service, unit: milliseconds.
# nacos.naming.clean.empty-service.interval=60000
### The expired time to clean empty service, unit: milliseconds.
# nacos.naming.clean.empty-service.expired-time=60000
### The interval to clean expired metadata, unit: milliseconds.
# nacos.naming.clean.expired-metadata.interval=5000
### The expired time to clean metadata, unit: milliseconds.
# nacos.naming.clean.expired-metadata.expired-time=60000
### The delay time before push task to execute from service changed, unit: milliseconds.
# nacos.naming.push.pushTaskDelay=500
### The timeout for push task execute, unit: milliseconds.
# nacos.naming.push.pushTaskTimeout=5000
### The delay time for retrying failed push task, unit: milliseconds.
# nacos.naming.push.pushTaskRetryDelay=1000
### Since 2.0.3
### The expired time for inactive client, unit: milliseconds.
# nacos.naming.client.expired.time=180000
#*************** CMDB Module Related Configurations ***************#
### The interval to dump external CMDB in seconds:
# nacos.cmdb.dumpTaskInterval=3600
### The interval of polling data change event in seconds:
# nacos.cmdb.eventTaskInterval=10
### The interval of loading labels in seconds:
# nacos.cmdb.labelTaskInterval=300
### If turn on data loading task:
# nacos.cmdb.loadDataAtStart=false
#*************** Metrics Related Configurations ***************#
### Metrics for prometheus
#management.endpoints.web.exposure.include=*
### Metrics for elastic search
management.metrics.export.elastic.enabled=false
#management.metrics.export.elastic.host=http://localhost:9200
### Metrics for influx
management.metrics.export.influx.enabled=false
#management.metrics.export.influx.db=springboot
#management.metrics.export.influx.uri=http://localhost:8086
#management.metrics.export.influx.auto-create-db=true
#management.metrics.export.influx.consistency=one
#management.metrics.export.influx.compressed=true
#*************** Access Log Related Configurations ***************#
### If turn on the access log:
server.tomcat.accesslog.enabled=true
### accesslog automatic cleaning time
server.tomcat.accesslog.max-days=30
### The access log pattern:
server.tomcat.accesslog.pattern=%h %l %u %t "%r" %s %b %D %{User-Agent}i %{Request-Source}i
### The directory of access log:
server.tomcat.basedir=file:.
#*************** Access Control Related Configurations ***************#
### If enable spring security, this option is deprecated in 1.2.0:
#spring.security.enabled=false
### The ignore urls of auth, is deprecated in 1.2.0:
nacos.security.ignore.urls=/,/error,/**/*.css,/**/*.js,/**/*.html,/**/*.map,/**/*.svg,/**/*.png,/**/*.ico,/console-ui/public/**,/v1/auth/**,/v1/console/health/**,/actuator/**,/v1/console/server/**
### The auth system to use, currently only 'nacos' and 'ldap' is supported:
nacos.core.auth.system.type=nacos
### If turn on auth system:
nacos.core.auth.enabled=false
### 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=true
### Since 1.4.1, Turn on/off white auth for user-agent: nacos-server, only for upgrade from old version.
nacos.core.auth.enable.userAgentAuthWhite=false
### Since 1.4.1, worked when nacos.core.auth.enabled=true and nacos.core.auth.enable.userAgentAuthWhite=false.
### The two properties is the white list for auth and used by identity the request from other server.
nacos.core.auth.server.identity.key=serverIdentity
nacos.core.auth.server.identity.value=security
### worked when nacos.core.auth.system.type=nacos
### The token expiration in seconds:
nacos.core.auth.plugin.nacos.token.expire.seconds=18000
### The default token (Base64 string):
nacos.core.auth.plugin.nacos.token.secret.key=SecretKey012345678901234567890123456789012345678901234567890123456789
### worked when nacos.core.auth.system.type=ldap?{0} is Placeholder,replace login username
#nacos.core.auth.ldap.url=ldap://localhost:389
#nacos.core.auth.ldap.basedc=dc=example,dc=org
#nacos.core.auth.ldap.userDn=cn=admin,${nacos.core.auth.ldap.basedc}
#nacos.core.auth.ldap.password=admin
#nacos.core.auth.ldap.userdn=cn={0},dc=example,dc=org
#nacos.core.auth.ldap.filter.prefix=uid
#nacos.core.auth.ldap.case.sensitive=true
#*************** Istio Related Configurations ***************#
### If turn on the MCP server:
nacos.istio.mcp.server.enabled=false
###*************** Add from 1.3.0 ***************###
#*************** Core Related Configurations ***************#
### set the WorkerID manually
# nacos.core.snowflake.worker-id=
### Member-MetaData
# nacos.core.member.meta.site=
# nacos.core.member.meta.adweight=
# nacos.core.member.meta.weight=
### MemberLookup
### Addressing pattern category, If set, the priority is highest
# nacos.core.member.lookup.type=[file,address-server]
## Set the cluster list with a configuration file or command-line argument
# nacos.member.list=192.168.16.101:8847?raft_port=8807,192.168.16.101?raft_port=8808,192.168.16.101:8849?raft_port=8809
## for AddressServerMemberLookup
# Maximum number of retries to query the address server upon initialization
# nacos.core.address-server.retry=5
## Server domain name address of [address-server] mode
# address.server.domain=jmenv.tbsite.net
## Server port of [address-server] mode
# address.server.port=8080
## Request address of [address-server] mode
# address.server.url=/nacos/serverlist
#*************** JRaft Related Configurations ***************#
### Sets the Raft cluster election timeout, default value is 5 second
# nacos.core.protocol.raft.data.election_timeout_ms=5000
### Sets the amount of time the Raft snapshot will execute periodically, default is 30 minute
# nacos.core.protocol.raft.data.snapshot_interval_secs=30
### raft internal worker threads
# nacos.core.protocol.raft.data.core_thread_num=8
### Number of threads required for raft business request processing
# nacos.core.protocol.raft.data.cli_service_thread_num=4
### raft linear read strategy. Safe linear reads are used by default, that is, the Leader tenure is confirmed by heartbeat
# nacos.core.protocol.raft.data.read_index_type=ReadOnlySafe
### rpc request timeout, default 5 seconds
# nacos.core.protocol.raft.data.rpc_request_timeout_ms=5000
#*************** Distro Related Configurations ***************#
### Distro data sync delay time, when sync task delayed, task will be merged for same data key. Default 1 second.
# nacos.core.protocol.distro.data.sync.delayMs=1000
### Distro data sync timeout for one sync data, default 3 seconds.
# nacos.core.protocol.distro.data.sync.timeoutMs=3000
### Distro data sync retry delay time when sync data failed or timeout, same behavior with delayMs, default 3 seconds.
# nacos.core.protocol.distro.data.sync.retryDelayMs=3000
### Distro data verify interval time, verify synced data whether expired for a interval. Default 5 seconds.
# nacos.core.protocol.distro.data.verify.intervalMs=5000
### Distro data verify timeout for one verify, default 3 seconds.
# nacos.core.protocol.distro.data.verify.timeoutMs=3000
### Distro data load retry delay when load snapshot data failed, default 30 seconds.
# nacos.core.protocol.distro.data.load.retryDelayMs=30000
### enable to support prometheus service discovery
#nacos.prometheus.metrics.enabled=true