The problem comes when I create additional indexes after naming network.bind_host. The newly created indexes are not viewable in head plug-in, and not sure if the index was created also. Have checked the data folder, but could not find any folder for the newly created index.
I suspect this is a problem with the Head plugin, and you should follow up with the author of that plugin.
As an aside, site plugins were deprecated and removed from Elasticsearch a long time ago, so you're likely running a very old version. I would look into upgrading to a newer version
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