title: How can I remove the key from fluent-bit output?
body: <p>I am using the following input in fluent-bit configuration of Kubernetes ConfigMap (YAML):</p>
  <pre><code>    [INPUT]
          Name          mem
          Tag           memory_usage
          Interval_Sec  60
          Interval_NSec 0
  </code></pre>
  <p>which provides output like:</p>
  <pre><code>{
      &quot;_aws&quot;: {
          &quot;Timestamp&quot;: 1617303986000,
          &quot;CloudWatchMetrics&quot;: [
              {
                  &quot;Namespace&quot;: &quot;fluent-bit-metrics&quot;,
                  &quot;Dimensions&quot;: [],
                  &quot;Metrics&quot;: [
                      {
                          &quot;Name&quot;: &quot;Mem.total&quot;,
                          &quot;Unit&quot;: &quot;Bytes&quot;
                      },
                      {
                          &quot;Name&quot;: &quot;Mem.used&quot;,
                          &quot;Unit&quot;: &quot;Bytes&quot;
                      },
                      {
                          &quot;Name&quot;: &quot;Mem.free&quot;,
                          &quot;Unit&quot;: &quot;Bytes&quot;
                      },
                      {
                          &quot;Name&quot;: &quot;Swap.total&quot;,
                          &quot;Unit&quot;: &quot;Bytes&quot;
                      },
                      {
                          &quot;Name&quot;: &quot;Swap.used&quot;,
                          &quot;Unit&quot;: &quot;Bytes&quot;
                      },
                      {
                          &quot;Name&quot;: &quot;Swap.free&quot;,
                          &quot;Unit&quot;: &quot;Bytes&quot;
                      }
                  ]
              }
          ]
      },
      &quot;Mem.total&quot;: 32676948,
      &quot;Mem.used&quot;: 25955580,
      &quot;Mem.free&quot;: 6721368,
      &quot;Swap.total&quot;: 0,
      &quot;Swap.used&quot;: 0,
      &quot;Swap.free&quot;: 0
  }
  </code></pre>
  <p>I am trying to remove _aws key and all its values by using this filter, but no success:</p>
  <pre><code>    [FILTER]
          Name record_modifier
          Match *
          Remove_key _aws
  </code></pre>
  <p><strong>Can you suggest something with this issue?</strong></p>