Erro 404 kopf

Tudo que é mostrado no terminal quando eu executo o elastic

[2019-04-17 08:00:51,659][INFO ][node                     ] [Harpy] version[2.3.1], pid[6828], build[bd98092/2016-04-04T12:25:05Z]
[2019-04-17 08:00:51,659][INFO ][node                     ] [Harpy] initializing ...
[2019-04-17 08:00:52,111][INFO ][plugins                  ] [Harpy] modules [reindex, lang-expression, lang-groovy], plugins [kopf], sites [kopf]
[2019-04-17 08:00:52,127][INFO ][env                      ] [Harpy] using [1] data paths, mounts [[/ (/dev/sda2)]], net usable_space [196.6gb], net total_space [233.2gb], spins? [no], types [ext4]
[2019-04-17 08:00:52,127][INFO ][env                      ] [Harpy] heap size [990.7mb], compressed ordinary object pointers [true]
[2019-04-17 08:00:52,127][WARN ][env                      ] [Harpy] max file descriptors [4096] for elasticsearch process likely too low, consider increasing to at least [65536]
[2019-04-17 08:00:53,453][INFO ][node                     ] [Harpy] initialized
[2019-04-17 08:00:53,453][INFO ][node                     ] [Harpy] starting ...
[2019-04-17 08:00:53,519][INFO ][transport                ] [Harpy] publish_address {127.0.0.1:9301}, bound_addresses {[::1]:9301}, {127.0.0.1:9301}
[2019-04-17 08:00:53,523][INFO ][discovery                ] [Harpy] elasticsearch/FWh42860Rv-lXchfuyPsfw
[2019-04-17 08:00:56,604][INFO ][cluster.service          ] [Harpy] detected_master {White Queen}{jpuw0DfqTQKHX-0LT-3i2g}{127.0.0.1}{127.0.0.1:9300}, added {{White Queen}{jpuw0DfqTQKHX-0LT-3i2g}{127.0.0.1}{127.0.0.1:9300},}, reason: zen-disco-receive(from master [{White Queen}{jpuw0DfqTQKHX-0LT-3i2g}{127.0.0.1}{127.0.0.1:9300}])
[2019-04-17 08:00:56,644][INFO ][http                     ] [Harpy] publish_address {127.0.0.1:9201}, bound_addresses {[::1]:9201}, {127.0.0.1:9201}
[2019-04-17 08:00:56,644][INFO ][node                     ] [Harpy] started

eu já tentei renomear a pasta kopf e acessar com o mesmo nome que esta na pasta plugins

Olá Leandro, tudo bem?

É exatamente isso que você falou, quando acessar na URL, você precisa acessar com o mesmo nome que esta na pasta plugins, se o nome da pasta for apenas Kopf, então na URL você precisa acessar dessa forma: http://localhost:9200/_plugin/kopf/ . Então você poderia verificar como está a sua URL e se realmente esta informando no nome da pasta corretamente.

Fala pra gente se está tudo certo!