I to all,
I have install cloudera manager 5.3.3 on my machine (OS : ubuntu 12.04 lts) . Now I have to launch cloudera manager through firefox to continue the installaion and setup , but I'm getting the error:
org.hibernate.exception.GenericJDBCException: Could not open connection
Can someone help me fix his issue, please?
Check if your CM database is running.
If you use the embedded Postgresql database: # service cloudera-scm-server-db status
If you configured an external db, check manually if you can connect to it, using the user, password, host, port as set in /etc/cloudera-scm-server/db.properties
Hi gzigldrum ,
Thanks for your reply. But after having looked for long time a solution, I have decided again uninstall cloudera manager and install.
Now I have another problem. To complete the installation I have to access to cloudera-manager through
http://localhost:7180/. but at step 5 , I got the following error :
Installation failed. Failed to receive heartbeat from agent.
Can you help me fix it please?
What is the hostname of the host that you added?
Can you # telnet <hostname> 7182
Does it connect?
If not, disable the firewall on this host for a test.
Doing #telnet <hostname> 7182
it do connect. The result is :
Connected to bsbigdata-Server.
Escape character is '^]'.
Connection closed by foreign host
Did you # telnet localhost 7182 or did you # telnet bsbigdata-Server 7182 ?
Is this the same host where CM is installed?
Did you run the telnet from the CM host?
Check host name entries in /etc/hosts, as shown in http://www.cloudera.com/content/cloudera/en/documentation/core/latest/topics/cm_ig_cm_requirements.h...
I did #tenet bsbigdata-Serevr 7182 first .
Doing #telnet localhost 7182 return the following result :
bsbigdata@bsbigdata-Server:~$ telnet localhost 7182
Connected to bigdata-virtual-machine.
Escape character is '^]'.
My /etc/hosts content is :
127.0.0.1 bigdata-virtual-machine localhost 127.0.0.1 localhost 127.0.1.1 bsbigdata-Server # The following lines are desirable for IPv6 capable hosts ::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters
For the installation I used the cloudera-manager-installer.bin that I found at
Please do not use 127.0.1.1 for bsbigdata-Server. This should be localhost.
See explanation in this Community https://community.cloudera.com/t5/Cloudera-Manager-Installation/Issue-while-installing-Hadoop/m-p/11...
Your hosts file should look like this (adjust the IP address for your host):
# cat /etc/hosts
10.11.12.13 bsbigdata-server.yourdomain bsbigdata-server
An from the link I gave, you would scroll down to this section
We present the overview of network requirements, with an example of what hosts should look like, there.
What path are you taking through the documentation for your pre-setup check and installation... Path A? Path B?
There are system requirements laid out for the systems you are going to install cluster services on, here:
Make sure you have addressed the networking and security requirements, especially the part about host name forward and reverse resolution as its a critical step.
The various approaches to installation are laid out here, with Path A being the easiest to use for Lab/Sandbox setup of CM to configure a cluster.