# Unable to do cross cluster replication , Please help here
**URL:** https://discuss.elastic.co/t/unable-to-do-cross-cluster-replication-please-help-here/328345
**Category:** Elasticsearch
**Tags:** ccr-cross-cluster-replication
**Created:** [March 23, 2023, 11:52am UTC](https://discuss.elastic.co/t/unable-to-do-cross-cluster-replication-please-help-here/328345 "2023-03-23T11:52:41Z")
**Posts on this page:** 12
**Page:** 1
### Author:  [@JayaPavani\_Pathakota](https://discuss.elastic.co/u/JayaPavani_Pathakota)
#### Post date: [March 23, 2023, 11:52am UTC](https://discuss.elastic.co/t/unable-to-do-cross-cluster-replication-please-help-here/328345/1 "2023-03-23T11:52:41Z")
I created two clusters in 2 data centers and I am trying to do cross cluster replication , in one of the cluster I configured leader index and in the other I did the remote configuration pointing to the cluster of leader index , in the final step of creating follower index I am getting some issues .
```auto
PUT /my-test-index-follower/_ccr/follow
{
"remote_cluster" : "leader",
"leader_index" : "my-test-index"
}
Error
{
"error": {
"root_cause": [
{
"type": "invalid_type_name_exception",
"reason": "Document mapping type name can't start with '_', found: [_ccr]"
}
],
"type": "invalid_type_name_exception",
"reason": "Document mapping type name can't start with '_', found: [_ccr]"
},
"status": 400
}
I gave all permissions in my roles.yml file
list_indices:
reserved: false
hidden: false
static: false
cluster_permissions:
- "cluster:*"
index_permissions:
- index_patterns:
- '*'
allowed_actions:
- "indices:*"
- "read"
- "indices:monitor/stats"
- "indices:data/write/index"
And gave this role in roles_mapping.yml
list_indices:
reserved: true
hidden: false
backend_roles:
- "list_indices"
users:
- '*'
```
Can anyone please help me here
---
### Author:  [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)
#### Post date: [March 23, 2023, 12:25pm UTC](https://discuss.elastic.co/t/unable-to-do-cross-cluster-replication-please-help-here/328345/2 "2023-03-23T12:25:36Z")
Which version of Elasticsearch you are using?
---
### Author:  [@JayaPavani\_Pathakota](https://discuss.elastic.co/u/JayaPavani_Pathakota)
#### Post date: [March 23, 2023, 1:21pm UTC](https://discuss.elastic.co/t/unable-to-do-cross-cluster-replication-please-help-here/328345/3 "2023-03-23T13:21:49Z")
Hi @Christian_Dahlqvist I am using 7.1 version
---
### Author:  [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)
#### Post date: [March 23, 2023, 1:43pm UTC](https://discuss.elastic.co/t/unable-to-do-cross-cluster-replication-please-help-here/328345/4 "2023-03-23T13:43:21Z")
I would recommend upgrading at least to 7.17 as a lot of fixes and improvements have been made since the very old version you are using was released.
---
### Author:  [@stephenb](https://discuss.elastic.co/u/stephenb)
#### Post date: [March 23, 2023, 1:59pm UTC](https://discuss.elastic.co/t/unable-to-do-cross-cluster-replication-please-help-here/328345/5 "2023-03-23T13:59:42Z")
> [@JayaPavani\_Pathakota](#):
>
> Hi @Christian_Dahlqvist I am using 7.1 version
For both?
Can you share the mapping for the leader index?
And I agree you should really upgrade to lastest many many fixes to ccr
---
### Author:  [@JayaPavani\_Pathakota](https://discuss.elastic.co/u/JayaPavani_Pathakota)
#### Post date: [March 24, 2023, 5:09am UTC](https://discuss.elastic.co/t/unable-to-do-cross-cluster-replication-please-help-here/328345/6 "2023-03-24T05:09:42Z")
Hi @stephenb ,
Yess I am using 7.1.1 version for both my clusters.
Steps I performed
1.In remote cluster I configured a leader index
PUT /my-test-index
{
"settings": {
"index.soft\_deletes.enabled" : true,
"index": {
"number\_of\_replicas": 2
}
}
}
2.In local cluster , I did remote config
PUT \_cluster/settings
{
"persistent" : {
"cluster" : {
"remote" : {
"leader" : {
"seeds" : [
"10.85.103.24:48789"
]
}
}
}
}
}
and they both are connected
"connected" : true,
"num\_nodes\_connected" : 2,
"max\_connections\_per\_cluster" : 3,
"initial\_connect\_timeout" : "30s",
"skip\_unavailable" : false
And the last step when I am trying to create follower index as mentioned above I am getting error , I shared my roles.yml file and roles\_mapping.yml , Can you please help here , do I need to do any additional configurations like enabling Xpack??
---
### Author:  [@stephenb](https://discuss.elastic.co/u/stephenb)
#### Post date: [March 24, 2023, 5:48am UTC](https://discuss.elastic.co/t/unable-to-do-cross-cluster-replication-please-help-here/328345/7 "2023-03-24T05:48:16Z")
@JayaPavani_Pathakota
**Please** format your code using the `` button going forward it only takes a minutes, I did it for you on your first post so we could even read it.
There is something else fundamental going on....
You are getting a mapping error
This command
```auto
PUT /my-test-index-follower/_ccr/follow
{
"remote_cluster": "leader",
"leader_index": "my-test-index"
}
```
Should give you errors something like
```auto
{
"error" : {
"root_cause" : [
{
"type" : "no_such_remote_cluster_exception",
"reason" : "no such remote cluster: [leader]"
}
],
"type" : "no_such_remote_cluster_exception",
"reason" : "no such remote cluster: [leader]"
},
"status" : 404
}
```
But you are getting and error like you are trying to post a document
```auto
POST /test-index/_ccr
{
"foo": "bar"
}
```
Which creates and error like you are seeing...
```auto
{
"error": {
"root_cause": [
{
"type": "invalid_type_name_exception",
"reason": "Document mapping type name can't start with '_', found: [_ccr]"
}
],
"type": "invalid_type_name_exception",
"reason": "Document mapping type name can't start with '_', found: [_ccr]"
},
"status": 400
}
```
So check that you are actually running the right commands
With respect to the roles ...
I would try to get it using with the `elastic` user first and if you can do that... then try with restricted roles.
---
### Author:  [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)
#### Post date: [March 24, 2023, 6:24am UTC](https://discuss.elastic.co/t/unable-to-do-cross-cluster-replication-please-help-here/328345/8 "2023-03-24T06:24:10Z")
If Elasticsearch interprets `_ccr` as a document type I suspect you do not have X-Pack installed and enabled on all nodes. This is no longer an issue in more recent versions of Elasticsearch and one of the reasons I recommended upgrading.
---
### Author:  [@JayaPavani\_Pathakota](https://discuss.elastic.co/u/JayaPavani_Pathakota)
#### Post date: [March 24, 2023, 6:24am UTC](https://discuss.elastic.co/t/unable-to-do-cross-cluster-replication-please-help-here/328345/9 "2023-03-24T06:24:14Z")
Hi @stephenb ,
Yes sure I will make sure to format my code , I tried with elastic:elastic but getting same error , I just need to know is it due to version I am using or Do I need to have licensed version of Xpack in my elastic Stack ?
---
### Author:  [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)
#### Post date: [March 24, 2023, 6:25am UTC](https://discuss.elastic.co/t/unable-to-do-cross-cluster-replication-please-help-here/328345/10 "2023-03-24T06:25:32Z")
[Cross-cluster replication is a commercial feature](https://www.elastic.co/subscriptions), so you will need commercial licences for all involved clusters. It will naturally also work temporarily with a Trial license.
---
### Author:  [@JayaPavani\_Pathakota](https://discuss.elastic.co/u/JayaPavani_Pathakota)
#### Post date: [March 24, 2023, 6:28am UTC](https://discuss.elastic.co/t/unable-to-do-cross-cluster-replication-please-help-here/328345/11 "2023-03-24T06:28:14Z")
Thanks @Christian_Dahlqvist and @stephenb for the above information 🙂
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [April 21, 2023, 6:28am UTC](https://discuss.elastic.co/t/unable-to-do-cross-cluster-replication-please-help-here/328345/12 "2023-04-21T06:28:18Z")
This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.