Docker 环境下的 Nacos 持久化

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最新推荐文章于 2025-03-20 15:20:04 发布

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本文介绍如何通过Docker搭建局域网并实现Nacos与MySQL的互联互通，详细讲解了Nacos持久化的步骤，包括创建Nacos专用数据库、配置Nacos连接MySQL的方法及验证配置的有效性。

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Nacos 持久化

（环境：Win10 + Docker）

1、搭建 Docker 局域网

创建局域网：

PS C:\Users\xiaozy37528> docker network create myNetwork
f26e19d32597aec0a762c2e7081f86de930aa885b90c983a78730af2a6a018e6

将 Nacos 和 MySQL 容器接入局域网：

docker network connect myNetwork MyNacos
docker network connect myNetwork mysql

查看局域网接入情况：

PS C:\Users\xiaozy37528> docker network inspect myNetwork
[
    {
        "Name": "myNetwork",
        "Id": "f26e19d32597aec0a762c2e7081f86de930aa885b90c983a78730af2a6a018e6",
        "Created": "2022-01-26T03:11:03.8063259Z",
        "Scope": "local",
        "Driver": "bridge",
        "EnableIPv6": false,
        "IPAM": {
            "Driver": "default",
            "Options": {},
            "Config": [
                {
                    "Subnet": "172.19.0.0/16",
                    "Gateway": "172.19.0.1"
                }
            ]
        },
        "Internal": false,
        "Attachable": false,
        "Ingress": false,
        "ConfigFrom": {
            "Network": ""
        },
        "ConfigOnly": false,
        "Containers": {
            "3cdb8945aa49aee996e12417a22260b8a5d7ed28d609a93dcd73bd82f0efe23c": {
                "Name": "mysql",
                "EndpointID": "1ece17d728f830bfd4420b6b5c9d34c1b12c0e2ccac6d263c88dfdb6934aa5e7",
                "MacAddress": "02:42:ac:13:00:04",
                "IPv4Address": "172.19.0.4/16",
                "IPv6Address": ""
            },
            "c824254e2a94bd32a5c216a0978e4ef7959cce6331a9ac220d75debd4593666c": {
                "Name": "nacos",
                "EndpointID": "a2119d6c6742bd886ec19e910c207c20011e532d25f9f8afb0b2f59533fda13d",
                "MacAddress": "02:42:ac:13:00:03",
                "IPv4Address": "172.19.0.3/16",
                "IPv6Address": ""
            }
        },
        "Options": {},
        "Labels": {}
    }
]

验证 Nacos 容器与 MySQL 容器能否互相 ping 通：

（nacos ping mysql）

# ping 172.19.0.4
PING 172.19.0.4 (172.19.0.4) 56(84) bytes of data.
64 bytes from 172.19.0.4: icmp_seq=1 ttl=64 time=0.123 ms
64 bytes from 172.19.0.4: icmp_seq=2 ttl=64 time=0.048 ms
64 bytes from 172.19.0.4: icmp_seq=3 ttl=64 time=0.041 ms
64 bytes from 172.19.0.4: icmp_seq=4 ttl=64 time=0.058 ms
--- 172.19.0.4 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3153ms
rtt min/avg/max/mdev = 0.041/0.067/0.123/0.033 ms


# ping mysql
PING mysql (172.19.0.4) 56(84) bytes of data.
64 bytes from mysql.myNetwork (172.19.0.4): icmp_seq=1 ttl=64 time=0.040 ms
64 bytes from mysql.myNetwork (172.19.0.4): icmp_seq=2 ttl=64 time=0.045 ms
64 bytes from mysql.myNetwork (172.19.0.4): icmp_seq=3 ttl=64 time=0.096 ms
64 bytes from mysql.myNetwork (172.19.0.4): icmp_seq=4 ttl=64 time=0.066 ms
--- mysql ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3117ms
rtt min/avg/max/mdev = 0.040/0.061/0.096/0.024 ms

（mysql ping nacos）

# ping 172.19.0.2
PING 172.19.0.2 (172.19.0.2) 56(84) bytes of data.
64 bytes from 172.19.0.2: icmp_seq=1 ttl=64 time=0.076 ms
64 bytes from 172.19.0.2: icmp_seq=2 ttl=64 time=0.051 ms
64 bytes from 172.19.0.2: icmp_seq=3 ttl=64 time=0.036 ms
64 bytes from 172.19.0.2: icmp_seq=4 ttl=64 time=0.039 ms
--- 172.19.0.2 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 100ms
rtt min/avg/max/mdev = 0.036/0.050/0.076/0.017 ms


# ping MyNginx
PING MyNginx (172.19.0.2) 56(84) bytes of data.
64 bytes from MyNginx.myNetwork (172.19.0.2): icmp_seq=1 ttl=64 time=0.037 ms
64 bytes from MyNginx.myNetwork (172.19.0.2): icmp_seq=2 ttl=64 time=0.044 ms
64 bytes from MyNginx.myNetwork (172.19.0.2): icmp_seq=3 ttl=64 time=0.066 ms
64 bytes from MyNginx.myNetwork (172.19.0.2): icmp_seq=4 ttl=64 time=0.056 ms
64 bytes from MyNginx.myNetwork (172.19.0.2): icmp_seq=5 ttl=64 time=0.068 ms
--- MyNginx ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 133ms
rtt min/avg/max/mdev = 0.037/0.054/0.068/0.013 ms

2、创建 Nacos 数据库

获取 Nacos 数据库创建脚本

https://github.com/alibaba/nacos/blob/develop/config/src/main/resources/META-INF/nacos-db.sql
MySQL 执行脚本创建数据库

3、配置 Nacos 持久化

修改 Nacos 配置文件

请添加图片描述

spring.datasource.platform=mysql

db.num=1
db.url.0=jdbc:mysql://172.19.0.4:3306/nacos_test?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true
db.user=root
db.password=123456

重启 Nacos

4、验证配置效果

打开控制面板

[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-AozJhn3t-1643259630162)(markdown/Nacos实战 - 持久化.assets/image-20220126162001106.png)]

正常打开说明 Nacos 正常启动，如果之前有在 Nacos 上添加配置信息，可以发现配置信息现在看不到了，因为 Nacos 现在使用的是我们配置的 MySQL 数据库。
随便添加一些数据
检查数据是否被保存到 MySQL

数据成功保存到MySQL，说明 Nacos 持久化配置已经