I get an installation failed on hosts error while usng Cloudera Manager to install CDP 7.1.4 runtime on a trial basis. For this purpose I have spun up two VMs( Ubuntu 18), which use a NatNetwork to connect to each other( I can ping, and connect from one to another using ssh, also mocked a server on port 7182 on one machine, and nc connect to that port).
Firewall is disabled, ports are open, TLS is disabled, but the agent still stops. What could cause this break?
Port 7182 is just for CM server communication to agents, but We may require some other ports to be open for the management services. There are many possibilities here, however; let me provide some things to check:
-Forward/Reverse DNS lookup -Cloudera Management Services Ports:
HMON 8091, 9994 and 9995
SMON 9996, 9997, 8086 -Dropped packages: please check if the NIC is having any issues with a simple #ifconfig -/opt folder space. We need ~20-25 GB -Root privileges to install the agent, We may need SSH passwordless to send the addhostscript
*This is just guessing, but We can have more insights into the STderr