Can't connect coordinator_host

[syed]

Please find the below error while adding the 2nd node to the elastic cloud enterprise:

Elastic Cloud Enterprise Installer

Install Elastic Cloud Enterprise on this host to add its resources to an existing installation.
After installation is complete, the host becomes a runner that you can assign a role to in the Cloud UI.
To learn more about the options you can specify, see the documentation.

-- Verifying Prerequisites --
Checking host storage path... PASSED
Checking docker version... PASSED
Checking internal ip connectivity... PASSED
Checking coordinator connectivity... FAILED
Can't connect COORDINATOR_HOST [172.16.42.155:2112]: Host is unreachable
Checking OS settings... PASSED
Checking OS kernel version... PASSED
Checking Minimum required memory... PASSED
Checking Kernel cgroup.memory setting... PASSED

• OS setting 'cgroup.memory' should be set to cgroup.memory=nokmem

Errors have caused Elastic Cloud Enterprise installation to fail
Some of the prerequisites failed: [coordinator connectivity], please fix before continuing

[uricohen]

Hi Syed

Which Docker version are you using? if 1.12, you should follow the
directions in our prerequisities and disable kmem accounting at OS boot
time. See here for more details:
https://www.elastic.co/guide/en/cloud-enterprise/1.1/ece-prereqs.html#ece-prereqs-software
.

HTH
Uri