Nacos单机模式部署操作步骤

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最新推荐文章于 2025-04-03 11:58:25 发布

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分类专栏：环境安装

本文链接：https://blog.youkuaiyun.com/cen50958/article/details/103753074

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本文详细介绍了在CentOS 7环境下，如何进行Nacos 1.1.4的单机模式部署，包括环境配置、安装步骤、开机自启设置以及从MySQL数据库的支持。在部署过程中，特别提到了遇到JDK路径问题的解决办法，确保服务正常启动。

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实验环境

操作系统

[root@localhost server]# cat /etc/centos-release
CentOS Linux release 7.7.1908 (Core)
局域网IP

192.168.47.20
Nacos版本

nacos-server-1.1.4
JDK版本

[root@localhost src]# java -version
java version “1.8.0_201”
Java™ SE Runtime Environment (build 1.8.0_201-b09)
Java HotSpot™ 64-Bit Server VM (build 25.201-b09, mixed mode)
MySQL版本

5.7.28

Nacos单机安装

安装包下载地址
```
https://github.com/alibaba/nacos
```

安装包准备

tar -zxvf nacos-server-1.1.4.tar.gz 
mkdir /application/server/ -p
mv nacos /application/server/nacos-server-1.1.4
ln -s /application/server/nacos-server-1.1.4/ /application/server/nacos

[root@localhost src]# ll /application/server/
total 0
lrwxrwxrwx 1 root root 39 Dec 29 13:50 nacos -> /application/server/nacos-server-1.1.4/
drwxr-xr-x 5 root root 72 Dec 29 13:50 nacos-server-1.1.4

启动Nacos
```
 ./startup.sh  -m standalone
```

检查是否启动成功
查看端口(8848)是否启动成功

[root@localhost bin]# netstat -ntlp |grep 8848            
tcp6       0      0 :::8848                 :::*                    LISTEN      1485/java

浏览器访问

http://192.168.47.20:8848/nacos/#/login

初始登录信息：nacos/nacos

Nacos安装配置

开机自启

添加nacos.service文件
vim /lib/systemd/system/nacos.service

[Unit]
Description=nacos
After=network.target

[Service]
Type=forking
ExecStart=/application/server/nacos/bin/startup.sh -m standalone
ExecReload=/application/server/nacos/bin/shutdown.sh
ExecStop=/application/server/nacos/bin/shutdown.sh
PrivateTmp=true

[Install]  
WantedBy=multi-user.target

加入Nacos服务
```
systemctl daemon-reload
```
设置开机自启
```
systemctl enable nacos.service
```

启动/停止

 systemctl start nacos.service

systemctl stop nacos.service

支持MySQL

MySQL数据库安装

自行安装，版本要求：5.6.5+

创建数据库连接信息
创建数据库nacos

create database nacos DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;

创建用户名和密码

CREATE USER  'nacos'@'192.168.47.%' IDENTIFIED BY '123456';

赋权

grant ALL PRIVILEGES on nacos.* to 'nacos'@'192.168.47.%';

初始化数据库文件
在Nacos的conf目录下找到nacos-mysql.sql文件，在创建的nacos库中执行sql文件

mysql> use nacos;
Database changed
mysql> show tables;
+----------------------+
| Tables_in_nacos      |
+----------------------+
| config_info          |
| config_info_aggr     |
| config_info_beta     |
| config_info_tag      |
| config_tags_relation |
| group_capacity       |
| his_config_info      |
| roles                |
| tenant_capacity      |
| tenant_info          |
| users                |
+----------------------+
11 rows in set (0.00 sec)

修改nacos server application.properties配置文件
修改conf/application.properties文件，增加支持mysql数据源配置（目前只支持mysql），添加mysql数据源的url、用户名和密码

#database mysql
spring.datasource.platform=mysql

db.num=1
db.url.0=jdbc:mysql://192.168.47.20:3306/nacos?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true
db.user=nacos
db.password=123456

错误归集

服务启动报错

错误描述:

[root@localhost ~]# systemctl start nacos.service
Job for nacos.service failed because the control process exited with error code. See "systemctl status nacos.service" and 	"journalctl -xe" for details.
[root@localhost ~]# systemctl status nacos.service
● nacos.service - nacos
  Loaded: loaded (/usr/lib/systemd/system/nacos.service; enabled; vendor preset: disabled)
 Active: failed (Result: exit-code) since Sun 2019-12-29 14:08:15 CST; 4s ago
Process: 1835 ExecStart=/application/server/nacos/bin/startup.sh -m standalone (code=exited, status=1/FAILURE)

Dec 29 14:08:15 localhost.localdomain startup.sh[1835]: which: no javac in (/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin)
Dec 29 14:08:15 localhost.localdomain startup.sh[1835]: readlink: missing operand
Dec 29 14:08:15 localhost.localdomain startup.sh[1835]: Try 'readlink --help' for more information.
Dec 29 14:08:15 localhost.localdomain systemd[1]: nacos.service: control process exited, code=exited status=1
Dec 29 14:08:15 localhost.localdomain startup.sh[1835]: dirname: missing operand
Dec 29 14:08:15 localhost.localdomain startup.sh[1835]: Try 'dirname --help' for more information.
Dec 29 14:08:15 localhost.localdomain systemd[1]: Failed to start nacos.
Dec 29 14:08:15 localhost.localdomain startup.sh[1835]: ERROR: Please set the JAVA_HOME variable in your environment, 	We need java(x64)! jdk8 or l...tter! !!
Dec 29 14:08:15 localhost.localdomain systemd[1]: Unit nacos.service entered failed state.
Dec 29 14:08:15 localhost.localdomain systemd[1]: nacos.service failed.
Hint: Some lines were ellipsized, use -l to show in full.

错误原因

nacos是有java开发而成，在启动的时候需要JDK版本1.8，在系统环境中已经配置了JAVA_HOME，但是在service脚本中，会从(/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin这些路径中寻找javac，只需要将我们自己的java目录软链接到/usr/bin/java即可

错误解决
查看java安装位置

[root@localhost ~]# which javac
/usr/local/java/jdk1.8.0_201/bin/javac

建立软链接

ln -s /usr/local/java/jdk1.8.0_201/bin/javac /usr/bin/javac

如果还是无法启动找不到javac，将javac设置为可执行

chmod +x /usr/local/java/jdk1.8.0_201/bin/javac