To start ZooKeeper, type sudo service zookeeper start. Check the status:

You can see status -l has more information:

Run sudo service mesos-master start, and see the status:

You can also add -l to get more information:

In order to access the console, here is the Mesos-master server and the public IP is 34.237.145.106 port is 5050. But we won't be able to access this as we need to enable the traffic and security group.

To do so, check the Security groups, which is mesos. We need to add a rule and input 5050 as Port Range, in Inbound | Edit. Where, we will consider the source as Anywhere but you should define your IP or your custom IP range and save it.

Now let's go and refresh our page(34.237.145.106:5050). We can see that we are able to access Mesos:

In this way, you can enable the inbound rule for your Mesos master server.