I am trying to implement multiples indices approach using elasticsearch-dsl. There are basically two steps:
1. Create aliases:
PUT /tweets_1/_alias/tweets_search
PUT /tweets_1/_alias/tweets_index
2. Change alias when necessary:
POST /_aliases
{
"actions": [
{ "add": { "index": "tweets_2", "alias": "tweets_search" }},
{ "remove": { "index": "tweets_1", "alias": "tweets_index" }},
{ "add": { "index": "tweets_2", "alias": "tweets_index" }}
]
}
I could only implement the step 1 using elasticsearch-py (not the dsl):
from elasticsearch.client import IndicesClient
IndicesClient(client).("tweets_1", "tweets_search")
IndicesClient(client).("tweets_1", "tweets_index")
I have no clue how to do that for step 2. So, what would be the equivalent in elasticsearch-dsl (or at least in elasticsearch-py)?
To implement that you need to use elasticsearch-py:
from elasticsearch import Elasticsearch
es = Elasticsearch()
# use es.indices instead of instantiating IndicesClient
es.indices.put_alias(index='tweets_1', name='tweets_search')
es.indices.put_alias(index='tweets_1', name='tweets_index')
es.indices.update_aliases({
"actions": [
{ "add": { "index": "tweets_2", "alias": "tweets_search" }},
{ "remove": { "index": "tweets_1", "alias": "tweets_index" }},
{ "add": { "index": "tweets_2", "alias": "tweets_index" }}
]
})
index_list_for_realias = [...]
aliases_list_to_realias = [...]
for i in index_list_for_realias:
print(i)
for j in aliases_list_to_realias:
es.indices.put_alias(index=i, name="logstash5-uni-" + j, body={
"filter": {
"term": {
"uni": j
}
}
}
)