I’m upgrading a test instance from 5.6.6 to 6.7.4 and am upgrading the plugins too. It seems it is not loading any plugins.
2018.08.02 18:08:43 INFO app[o.e.p.PluginsService] no modules loaded 2018.08.02 18:08:43 INFO app[o.e.p.PluginsService] loaded plugin [org.elasticsearch.transport.Netty4Plugin]
There should be six scanner plugins and the LDAP plugin, but nothing loads. Without the LDAP plugin, we cannot log in. I’ve tried DEBUG log level but no further pertinent details are given. I’ve tried having just the LDAP plugin but it still will not load any added plugins.
Unfortunately, the database upgrade seemed to go through successfully, so the instance is in a broken limbo until I can either get the plugins working or roll everything back, which I’d rather not do.