how to generate tag number by API

[#1]

we want to post the new config to ambari

but we need uniq tag number that not exist in ambari

how to generate new tag number by API or other approach , so we can put it after "tag" ? as - 237432322

curl -u admin:admin -H "X-Requested-By: ambari" -X PUT -d '[
  {
    "Clusters": {
      "desired_config": [
        {
          "type": "kafka-env",
          "tag": "237432322",
          "properties": {

[#2 · Accepted solution]

@Michael Bronson

You can use the current epoch timestamp as tag.

configs.py internally uses the same.

In python: "version"+str(int(time.time() * 1000000)) tag will be something like : "version1527441356254688"

[#3]

can you please give real example ?

[#4]

curl -u admin:admin -H 'X-Requested-By:admin' -X PUT 'http://localhost:8080/api/v1/clusters/cc' -d '{
  "Clusters": {
    "desired_config": {
      "type": "core-site",
      "tag": "version1527441356254688",
      "properties": {
        "security.admin.operations.protocol.acl" : "hadoop",
        "security.client.datanode.protocol.acl" : "*",
        "security.client.protocol.acl" : "*",
        "security.datanode.protocol.acl" : "*",
        "security.inter.datanode.protocol.acl" : "*",
        "security.inter.tracker.protocol.acl" : "*",
        "security.job.client.protocol.acl" : "*",
        "security.job.task.protocol.acl" : "*",
        "security.namenode.protocol.acl" : "*",
        "security.refresh.policy.protocol.acl" : "hadoop",
        "security.refresh.usertogroups.mappings.protocol.acl" : "hadoop"
      }
    }
  }
}'

[#5]

( I accept your anser but we have aproblem ) , regarding the - version"+str(int(time.time() * 1000000)) , what in case its return number that already exists as version ( in spite this is very very rare ? )

[#6]

@Michael Bronson, It is highly unlikely that you will get the same version number when using epoch timestamp, The number changes every millisecond. So each time you execute "version"+str(int(time.time() * 1000000)) you will get a new unique number.