ind - is golang code to aggregate the output from an elastic endpoint.

Actually this could be generalized to a client for elasticsearch that could do any endpoint.

elastic indices

Specification: I needed metrics for index status. But I needed more articulate numbers. _cat/indices passes back a large report. Needed was a more aggregate status. This program returns a hash where each key has a 3 element array. Each key is a grouped index name.

_cat/indices (for a one name collection might look like)
green open log-yourname-2020.03.01 SUUvU6M1Rj-yEhnDj6cJrw 5 1  483505 0 315.8mb 157.9mb
green open log-yourname-2020.02.27 XSSiXFEkTqyAO-ghXqcFqA 5 1 1343163 0 859.1mb 429.5mb
green open log-yourname-2020.03.02 wmPv_XifS0m-c9X96DO2jQ 5 1      25 0 102.5kb  51.2kb
green open log-yourname-2020.03.08 uDCpU01kTOK_iwMDY5Oapw 5 1  225504 0 141.7mb  70.8mb
.
.
.

red yellow green

1. x 0 0       red                    
2. x x 0       going yellow
3. 0 x 0       stuck yellow problem with node
4. 0 x x       going green
5. 0 0 x       green ready

Key of the hash is the unique part of the index name less date. The data element is an array of 3 integers. red/yellow/green This gives us an articulate status of what might be wrong. The data will be appropriate to report to checkmk.

output of ind for this (if all green)
map[log-yourname:[0,0,68758787587]]

SSL will work fine. I have not implemented client verify but you may specify either insecure or secure protocol.

example:
  ind https://hostname password
Look in the main function for what is required to aggregate the endpoint.
hostname
user
password