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An example python script to reroute unassigned shards to NODE_NAME node thus recovering from the red cluster status
#!/usr/bin/env python3
#
# An example python script to reroute unassigned shards to NODE_NAME node,
# thus recovering from the red cluster status
#
# pip install requests before using requests
import requests
import json
HOSTNAME="your.elasticsearch.host.com" # hostname
NODE_NAME="node001" # node to reroute to
PORT=9200 # port number
def reroute(index, shard):
payload = { "commands": [{ "allocate_empty_primary": { "index": index, "shard": shard, "node": NODE_NAME, "accept_data_loss": "true" } }] }
res = requests.post("http://" + HOSTNAME + ":" + str(PORT) + "/_cluster/reroute", data=json.dumps(payload), headers={'Content-Type': 'application/json'})
print(res.text)
pass
res = requests.post("http://" + HOSTNAME + ":" + str(PORT) + "/_flush/synced", headers={'Content-Type': 'application/json'})
j = res.json()
for field in j:
if j[field]["failed"] != 0 and field != "_shards":
for item in j[field]["failures"]:
reroute(field, item["shard"])
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