title: elasticsearch migrate 503 - cluster_block_exception
body: <p>I am using elasticsearch 7.9 and I am trying to migrate from remote cluster to local cluster.
  When I am running the post reindex in postman I am getting the following error:</p>
  <pre><code>    &quot;error&quot;: {
          &quot;root_cause&quot;: [
              {
                  &quot;type&quot;: &quot;cluster_block_exception&quot;,
                  &quot;reason&quot;: &quot;blocked by: [SERVICE_UNAVAILABLE/1/state not recovered / initialized];&quot;,
                  &quot;suppressed&quot;: [
                      {
                          &quot;type&quot;: &quot;master_not_discovered_exception&quot;,
                          &quot;reason&quot;: &quot;ClusterBlockException[index [gil_support_log] blocked by: [SERVICE_UNAVAILABLE/1/state not recovered / initialized];]&quot;
                      }
                  ]
              }
          ],
          &quot;type&quot;: &quot;cluster_block_exception&quot;,
          &quot;reason&quot;: &quot;blocked by: [SERVICE_UNAVAILABLE/1/state not recovered / initialized];&quot;,
          &quot;suppressed&quot;: [
              {
                  &quot;type&quot;: &quot;master_not_discovered_exception&quot;,
                  &quot;reason&quot;: &quot;ClusterBlockException[index [gil_support_log] blocked by: [SERVICE_UNAVAILABLE/1/state not recovered / initialized];]&quot;,
                  &quot;caused_by&quot;: {
                      &quot;type&quot;: &quot;cluster_block_exception&quot;,
                      &quot;reason&quot;: &quot;index [gil_support_log] blocked by: [SERVICE_UNAVAILABLE/1/state not recovered / initialized];&quot;
                  }
              }
          ]
      },
      &quot;status&quot;: 503
  }```
  
  Can someone help me understand what is the problem?
  </code></pre>