添加种子节点后无法查看远程cassandra数据中心

我尝试按照以下步骤将两个cassandra数据中心连接到一个集群中，但失败了

datacenter1:

In cassandra.yaml
cluster_name: cassandra_cluster1
- class_name: org.apache.cassandra.locator.SimpleSeedProvider
  parameters:
  - seeds: 2001:1b70:8209:d18c::7,2001:1b70:8209:d18c::f,2001:1b70:8209:d18c::14,2001:1b70:8209:5201::5,2001:1b70:8209:5201::a,2001:1b70:8209:5201::4

cluster_name: cassandra_cluster1
- class_name: org.apache.cassandra.locator.SimpleSeedProvider
  parameters:
  - seeds: 2001:1b70:8209:5201::5,2001:1b70:8209:5201::a,2001:1b70:8209:5201::4,2001:1b70:8209:d18c::7,2001:1b70:8209:d18c::f,2001:1b70:8209:d18c::14

nodetool状态

Datacenter: datacenter1
=================
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
--  Address                       Load       Tokens       Owns (effective)  Host ID                               Rack
UN  2001:1b70:8209:d18c:0:0:0:d   361.64 KiB  256          10.3%             af4e01ff-8c89-423a-b683-e18a847427de  rack1
UN  2001:1b70:8209:d18c:0:0:0:c   359.94 KiB  256          10.4%             1da3c9a1-7149-4ab3-ad99-640dbaaa0b25  rack1
UN  2001:1b70:8209:d18c:0:0:0:f   329 KiB    256          9.8%              cf394ab7-8feb-4d8a-b3ab-81094e76a11b  rack1
UN  2001:1b70:8209:d18c:0:0:0:e   367.14 KiB  256          10.0%             796c8e1e-fa0a-4f40-9249-15714b5e418b  rack1
UN  2001:1b70:8209:d18c:0:0:0:5   367.73 KiB  256          10.8%             5d21050d-d916-4c69-8cbd-f10b80336c6d  rack1
UN  2001:1b70:8209:d18c:0:0:0:4   368.52 KiB  256          11.8%             52eb8f5c-c2ee-42b1-9127-5f477575a988  rack1
UN  2001:1b70:8209:d18c:0:0:0:7   472.11 KiB  256          11.7%             af8968b8-583e-4628-bb6b-190dbced680c  rack1
UN  2001:1b70:8209:d18c:0:0:0:6   368.75 KiB  256          10.1%             0d087401-0b4e-4b74-8147-5081cfe427ce  rack1
UN  2001:1b70:8209:d18c:0:0:0:9   317.29 KiB  256          10.8%             0147b588-385e-4e92-a57c-030e33543912  rack1
UN  2001:1b70:8209:d18c:0:0:0:8   318.19 KiB  256          10.8%             e05a48a1-f163-4934-bba9-012496fc7970  rack1
UN  2001:1b70:8209:d18c:0:0:0:28  367.25 KiB  256          10.8%             abee0fa4-03a5-4af3-9b01-6b29b945fa16  rack1
UN  2001:1b70:8209:d18c:0:0:0:a   369.29 KiB  256          10.5%             c8a7db2f-c0ec-4c3a-b076-eb5799deab93  rack1
UN  2001:1b70:8209:d18c:0:0:0:1e  322.67 KiB  256          11.0%             05759c86-8d66-43db-a175-15c7d70ec216  rack1
UN  2001:1b70:8209:d18c:0:0:0:21  369.82 KiB  256          10.0%             ceea4936-3ceb-42e9-a251-4ac126ede41b  rack1
UN  2001:1b70:8209:d18c:0:0:0:22  370.51 KiB  256          10.1%             a2ec5c4f-989e-4c70-a50e-1523341be15c  rack1
UN  2001:1b70:8209:d18c:0:0:0:15  368.38 KiB  256          10.3%             53acf9cd-5169-4b8d-8e1b-1740603940bf  rack1
UN  2001:1b70:8209:d18c:0:0:0:14  334.19 KiB  256          10.6%             b431c96a-a013-4ad8-b72a-8d46d56d9453  rack1
UN  2001:1b70:8209:d18c:0:0:0:19  317.57 KiB  256          9.7%              9906e06a-1f27-40c7-8884-fc6b1157d029  rack1
UN  2001:1b70:8209:d18c:0:0:0:1b  369.8 KiB  256          10.5%             762a4589-e1f2-456f-ae5f-1e479982930e  rack1

datacenter2:

In cassandra.yaml
cluster_name: cassandra_cluster1
- class_name: org.apache.cassandra.locator.SimpleSeedProvider
  parameters:
  - seeds: 2001:1b70:8209:d18c::7,2001:1b70:8209:d18c::f,2001:1b70:8209:d18c::14,2001:1b70:8209:5201::5,2001:1b70:8209:5201::a,2001:1b70:8209:5201::4

cluster_name: cassandra_cluster1
- class_name: org.apache.cassandra.locator.SimpleSeedProvider
  parameters:
  - seeds: 2001:1b70:8209:5201::5,2001:1b70:8209:5201::a,2001:1b70:8209:5201::4,2001:1b70:8209:d18c::7,2001:1b70:8209:d18c::f,2001:1b70:8209:d18c::14

nodetool状态（只能看到自己的集群）

在种子中

2001:1b70:8209:d18c::7,2001:1b70:8209:d18c::f,2001:1b70:8209:d18c::14 belong to datacenter1 and 
2001:1b70:8209:5201::5,2001:1b70:8209:5201::a,2001:1b70:8209:5201::4 belong to datacenter2

两个数据中心都通过端口7000连接到其他种子节点。示例如下：

tcp    ESTAB      0      0        2001:1b70:8209:d18c::7:58186                2001:1b70:8209:5201::5:7000
tcp    ESTAB      0      0        2001:1b70:8209:d18c::7:7000                 2001:1b70:8209:5201::5:42966

system.log和debug.log中没有特定的错误或警告。为什么他们不能在“nodetool状态”和“nodetool gossipinfo”中找到对方？我们是否有其他调试方法来确定根本原因

---

此外，两个数据中心都使用

---

endpoint_snitch:GossipingPropertyFileSnitch

您是如何初始化数据中心的？我想知道这句话：

我试图将两个卡桑德拉数据中心合并成一个集群