How to pass Authorisation token for all elasticsearch requests - elasticsearch

Question

I've setup a local elasticsearch node with kibana and have set
xpack.security.enabled: true
I require this as i plan to further add roles and I want to add document level security.
Both Kibana & Elastic search are up and running at their respective ports. I am struggling to understand how to I add a new document operating via console.
curl -X PUT "localhost:9200/customer/_doc/1?pretty" -H 'Content-Type: application/json' -d'
{
"name": "John Doe"
}
'
This fails with
{
"error" : {
"root_cause" : [
{
"type" : "security_exception",
"reason" : "missing authentication credentials for REST request [/customer/_doc/1?pretty]",
"header" : {
"WWW-Authenticate" : "Basic realm=\"security\" charset=\"UTF-8\""
}
}
],
"type" : "security_exception",
"reason" : "missing authentication credentials for REST request [/customer/_doc/1?pretty]",
"header" : {
"WWW-Authenticate" : "Basic realm=\"security\" charset=\"UTF-8\""
}
},
"status" : 401
}
Fair , I understand I need to get an auth token to pass to the curl. Which API retrives this and where can i find an example. I've tried this unsucessfully.
curl -X POST "localhost:9200/_security/oauth2/token?pretty" -H 'Content-Type: application/json' -d'
{
"grant_type" : "client_credentials"
"username" : "elastic",
"password" : "VKZjNLBVBSeLS08sHDIN"
}
'
The password was generated automatically while bringing up the node.
Thanks!

Answer 1

By curl:
curl -X PUT --basic -u {user}:{password} http://localhost:9200/customer/_doc/1?pretty
By http request in program:
1. Make the the base64 encoding for the string: ${user}:${password}
2. Add http header
key:"Authorization"
value:"Basic ${encode value in step 1}"
By curl with header:
curl -X PUT "localhost:9200/customer/_doc/1?pretty" -H 'Authorization:Basic ********' -H 'Content-Type: application/json' -d'
{
"name": "John Doe"
}
******** is the value of base64 encoding for the string: ${user}:${password}