NoInstallationError(«Could not find a usable ‘nginx’ binary

I’m using certbot version 0.31.0 And I received via email a string like this: Could not choose appropriate plugin: The nginx plugin is not working; there may be problems with your existing configuration. The error was: NoInstallationError(«Could not find a usable ‘nginx’ binary. Ensure nginx exists, the binary is executable, and your PATH is set correctly.»,) Attempting to renew cert (jblanco.org) from /etc/letsencrypt/renewal/jblanco.org.conf produced an unexpected error: The nginx plugin is not working; there may be problems with your existing configuration. The error was: NoInstallationError(«Could not find a usable ‘nginx’ binary. Ensure nginx exists, the binary is executable, and your PATH is set correctly.»,). Skipping. In the community forum community.letsencrypt.org they say that it is probably related to which certbot cannot find the nginx binary (or perhaps the nginx configuration directory). But this is not the case. In my case it is a domain (jblanco.org) that I have not renewed. To put the right context, I have some errors: With the help option we can see this two options: Then I’ve try first make a revoke, then a delete. The sintax was: But I saw an error like this: Then the option delete, was my solution, but first I disabled the site: And to make me sure that it was deleted after the next command I perform this command: Then finally: And I put again the find command just to be sure, and voilà! See you!    

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nslookup – server can’t find *: NXDOMAIN

Por ejemplo: server can’t find ftp: NXDOMAIN (NXDOMAIN significa «Non-Existent Domain») Al intentar nslookup para consultar los registros en el propio servidor DNS, si no tenemos bien configurado el archivo /etc/resolv.conf, sólo responderá a los FQDN, es decir encontrará ftp.sospedia.net pero no el host ftp, por que falta el sufijo de dominio (sospedia.net) que debemos especificar en el mencionado archivo.

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