@Chris suen Please check https://issues.apache.org/jira/browse/AMBARI-5639 Set the two parameters specified there to 50 in /etc/ambari-server/conf/ambari.properties and restart ambari-server. ... View more

@darkz yu Are you able to start the concerned service manually on the given node? If so, please go ahead and file a technical support case / bug. Upgrade to 2.2.1.1 if possible. ... View more

@Andrew Watson Yes. Python 2.6 is the minimum requirement. ... View more

@Ram D It is upto your cluster planning and how old data you need. ... View more

@Sunile Manjee no you can't. You would have to install the basic components and may be shut them down later. ... View more

@Ram D What is the Total space you have allocated for Ambari Metrics? It is expected to be about 100Gb based on the workloads. How many nodes are in the cluster and what components run on this system? Do you need all those data? You could also review the TTL parameters in AMS to reduce the amount of data retained over a period of time. If you have 100's of nodes, you could also look at using HDFS for storage[ie, move from embedded to distributed mode]. This way you could move the content into HDFS. ... View more

When you created a new service, was Custom config section created by default? As per Cwiki we have to create the configs locally. ... View more

`Yes. Please post this as an idea in HCC. ... View more

@Prakash Punj I hope you have stopped iptables and disabled selinux as others have suggested. Please ensure that passwordless connection is going ok between the nodes. Is the right id_rsa copied to the host registration? Else, add the node manually. To do this, install ambari-agent manually in the host being added and then try the registration. ... View more