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Posted to dev@hugegraph.apache.org by "Tommu10ve (via GitHub)" <gi...@apache.org> on 2025/06/19 08:49:29 UTC
[I] [Question] 6 server(1 master + 5 worker) 集群搭建后,如何使用HugeGraph-Java-Client去连接server,我当前连接方式是否有问题? [incubator-hugegraph]
Tommu10ve opened a new issue, #2811:
URL: https://github.com/apache/incubator-hugegraph/issues/2811
### Problem Type (问题类型)
None
### Before submit
- [x] 我已经确认现有的 [Issues](https://github.com/apache/hugegraph/issues) 与 [FAQ](https://hugegraph.apache.org/docs/guides/faq/) 中没有相同 / 重复问题 (I have confirmed and searched that there are no similar problems in the historical issue and documents)
### Environment (环境信息)
- Server Version: 1.5.0 (Apache Release Version)
- Backend: RocksDB 6 nodes SSD
### Your Question (问题描述)
192.168.12.56 nginx 代理 6台server 服务
```
http {
upstream backend {
# 定义后端服务器列表（6台服务器）
server 192.168.12.40:8080;
server 192.168.12.41:8080;
server 192.168.12.42:8080;
server 192.168.12.43:8080;
server 192.168.12.44:8080;
server 192.168.12.45:8080;
# 可选：负载均衡策略（默认是轮询）
# least_conn; # 最少连接
# ip_hash; # 基于客户端 IP 的哈希（会话保持）
}
server {
listen 8080; # Nginx 监听的端口（通常是 80 或 443）
location / {
proxy_pass http://backend; # 反向代理到后端服务器
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
}
}
}
```
HugeGraph-Java-Client 端配置
```
<dependency>
<groupId>org.apache.hugegraph</groupId>
<artifactId>hugegraph-client</artifactId>
<version>1.5.0</version>
</dependency>
```
```
HugeClient hugeClient = HugeClient.builder("http://192.168.12.56:8080",
"hugegraph")
.build();
```
HugeGraph-Java-Client HugeClient.builder中 如何链接集群版本的图数据库?
### Vertex/Edge example (问题点 / 边数据举例)
```javascript
```
### Schema [VertexLabel, EdgeLabel, IndexLabel] (元数据结构)
```javascript
```
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Re: [I] [Question] 6 server(1 master + 5 worker) 集群搭建后,如何使用HugeGraph-Java-Client去连接server,我当前连接方式是否有问题? [incubator-hugegraph]
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on issue #2811:
URL: https://github.com/apache/incubator-hugegraph/issues/2811#issuecomment-3037238690
Due to the lack of activity, the current issue is marked as stale and will be closed after 20 days, any update will remove the stale label
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Re: [I] [Question] 6 server(1 master + 5 worker) 集群搭建后,如何使用HugeGraph-Java-Client去连接server,我当前连接方式是否有问题? [incubator-hugegraph]
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] closed issue #2811: [Question] 6 server(1 master + 5 worker) 集群搭建后,如何使用HugeGraph-Java-Client去连接server,我当前连接方式是否有问题?
URL: https://github.com/apache/incubator-hugegraph/issues/2811
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Re: [I] [Question] 6 server(1 master + 5 worker) 集群搭建后,如何使用HugeGraph-Java-Client去连接server,我当前连接方式是否有问题? [incubator-hugegraph]
Posted by "Tommu10ve (via GitHub)" <gi...@apache.org>.
Tommu10ve commented on issue #2811:
URL: https://github.com/apache/incubator-hugegraph/issues/2811#issuecomment-2987423007
@dosubot 如果没有nginx代理,HugeGraph-Java-Client怎么连接到集群server
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Re: [I] [Question] 6 server(1 master + 5 worker) 集群搭建后,如何使用HugeGraph-Java-Client去连接server,我当前连接方式是否有问题? [incubator-hugegraph]
Posted by "Tommu10ve (via GitHub)" <gi...@apache.org>.
Tommu10ve commented on issue #2811:
URL: https://github.com/apache/incubator-hugegraph/issues/2811#issuecomment-2987263940
通过上面方式执行后: 原来单机部署好的server功能运行正常代码,在集群环境下会以下异常:
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Re: [I] [Question] 6 server(1 master + 5 worker) 集群搭建后,如何使用HugeGraph-Java-Client去连接server,我当前连接方式是否有问题? [incubator-hugegraph]
Posted by "dosubot[bot] (via GitHub)" <gi...@apache.org>.
dosubot[bot] commented on issue #2811:
URL: https://github.com/apache/incubator-hugegraph/issues/2811#issuecomment-2987271292
<!-- Answer -->
HugeGraph-Java-Client 本身不感知集群，只是把请求发送到你配置的 REST 接口（比如 Nginx 代理地址），所以你的 client 连接方式没问题，不需要特殊配置。出现 “invalid vertex ID” 这类异常，通常不是 client 配置问题，而是后端集群或代理层（如 Nginx）导致的。例如：
- Nginx 没有配置会话保持（如 ip_hash），导致同一个会话的请求被分发到不同节点，节点间数据未同步或缓存不一致时就会报错。
- 集群各节点 hugegraph.properties 配置不一致，尤其是 raft.group_peers、data/wal 路径、端口等，或者节点未全部初始化、网络不通。
- 旧参数如 raft.mode 已废弃，1.5.0 只需配置 raft.group_peers，且必须写在每个节点的 graphs/hugegraph.properties 文件里，不能写在 rest-server.properties 里。[参考](https://github.com/apache/incubator-hugegraph/issues/2790) [参考2](https://github.com/apache/incubator-hugegraph/issues/2787)
建议排查：
1. 检查 Nginx 是否开启了 ip_hash 或其他会话保持策略，避免同一会话请求被分发到不同节点。
2. 确认所有节点的 hugegraph.properties 配置完全一致，raft.group_peers 包含所有节点，端口、路径无冲突，节点已全部初始化且网络互通。
3. 检查 vertex/edge id 是否有格式或编码问题，尤其是 URL 编码。[参考](https://github.com/apache/incubator-hugegraph/discussions/2710)
4. 如果是新集群，建议先用 curl 直接请求 Nginx 代理地址，确认 REST API 能正常增删查改。
如还有具体报错堆栈或日志，可以补充下详细内容，便于进一步定位。
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Re: [I] [Question] 6 server(1 master + 5 worker) 集群搭建后,如何使用HugeGraph-Java-Client去连接server,我当前连接方式是否有问题? [incubator-hugegraph]
Posted by "dosubot[bot] (via GitHub)" <gi...@apache.org>.
dosubot[bot] commented on issue #2811:
URL: https://github.com/apache/incubator-hugegraph/issues/2811#issuecomment-2987430458
<!-- Answer -->
HugeGraph-Java-Client 不能自动感知集群，也不支持多节点切换或高可用。没有 Nginx 代理时，你只能在 HugeClient.builder 里填写某一个节点的 REST API 地址（比如 master 节点的 http://ip:port），所有请求都会发到这个节点。如果该节点不可用，client 也无法自动切换到其他节点。
所以，直接连接集群时，写法如下：
```java
HugeClient hugeClient = HugeClient.builder("http://某个节点IP:端口", "hugegraph").build();
```
注意事项：
- 你只能指定一个节点的 REST 地址，不能写多个。
- 集群所有节点的 graphs/hugegraph.properties 配置必须完全一致（尤其是 raft.group_peers），端口不能冲突，网络互通，data/wal 路径可区分。
- 高可用、负载均衡、自动故障切换只能靠 Nginx 或类似的反向代理实现，Java client 本身不支持这些功能。[参考](https://github.com/apache/incubator-hugegraph/issues/2787) [参考2](https://github.com/apache/incubator-hugegraph/issues/2790)
如果直接连节点，建议选 leader 节点（可通过 REST API 查询当前 leader），否则写入操作可能会被重定向或失败。
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