# Can t start kong **URL:** \ **Category:** General\ **Tags:** kong-gateway\ **Created:** [August 18, 2020, 9:21pm UTC](https://discuss.konghq.com/t/can-t-start-kong/6948 "2020-08-18T21:21:43Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![staillon](https://yyz2.discourse-cdn.com/flex036/user_avatar/discuss.konghq.com/staillon/32/2164_2.png) [@staillon](https://discuss.konghq.com/u/staillon)\ **Post date:** [August 18, 2020, 9:21pm UTC](https://discuss.konghq.com/t/can-t-start-kong/6948/1 "2020-08-18T21:21:43Z")
ubuntu 20.04 with cassandra without postgres… sebastien@dev-box:~$ kong start Error: [PostgreSQL error] failed to retrieve PostgreSQL server\_version\_num: connection refused Run with --v (verbose) or --vv (debug) for more details sebastien@dev-box:~$ AND i dont find my kong.conf and kong.yml help me please ---
**Author:** ![thedan06](https://yyz2.discourse-cdn.com/flex036/user_avatar/discuss.konghq.com/thedan06/32/2174_2.png) [@thedan06](https://discuss.konghq.com/u/thedan06)\ **Post date:** [August 22, 2020, 1:32am UTC](https://discuss.konghq.com/t/can-t-start-kong/6948/2 "2020-08-22T01:32:04Z")
First of all, you need to install the Cassandra database separately in your Ubuntu server. check this link ([Installing Cassandra in Ubuntu](https://www.digitalocean.com/community/tutorials/how-to-install-cassandra-and-run-a-single-node-cluster-on-ubuntu-14-04)) You can create a specific user and password in the cassandra for your Kong gateway Then, you need to locate _/etc/kong/kong.conf.default_ then make a copy by running this command _cp /etc/kong/kong.conf.default /etc/kong/kong.conf_ then open _/etc/kong/kong.conf_ file to update update datastore/database configs like: _database = cassandra_ _pg\_host = 127.0.0.1_ _pg\_port = 5432_ _pg\_user = yourCassandraUsername_ _pg\_password = yourCassandraPassword_ _pg\_database = kong_ Finally run _kong start_