Failed to Create a Pattern in an Elasticsearch Cluster

Symptom

When I create a pattern, the system does not respond and the pattern cannot be created.

Possible Cause

1. Check whether the disk is full and whether the Kibana index is read-only.
2. Check whether there are multiple Kibana indexes.

Solution

PUT .kibana/_settings
{
"index": {
"blocks": {
"read_only_allow_delete": "null"
}
}
}