question Re: list of RHEL kernel parameter change for hortonworks/ambari installation in Archives of Support Questions (Read Only)

list of RHEL kernel parameter change for hortonworks/ambari installation

robi — Fri, 16 Sep 2022 09:59:24 GMT

need to have a clear list of RHEL kernel parameters need change for hortonworks/ambari installation

Re: list of RHEL kernel parameter change for hortonworks/ambari installation

nsabharwal — Mon, 25 Jan 2016 07:25:09 GMT

Please take a look on chapter 2 and 3

http://docs.hortonworks.com/HDPDocuments/Ambari-2.2.0.0/bk_Installing_HDP_AMB/content/_meet_minimum_system_requirements.html

Re: list of RHEL kernel parameter change for hortonworks/ambari installation

nsabharwal — Mon, 25 Jan 2016 07:36:23 GMT

@Robin Dong

See this

/etc/init.d/iptables stop

Disable SELinux and PackageKit and check the UMASK Value

Disable THP

/etc/init.d/ntpd start

sysctl -w vm.swappiness=0

sysctl -w fs.file-max=300000

Again...please follow this as it will make things way easier https://gist.github.com/nsabharwal/683adf76260ea9010532

Re: list of RHEL kernel parameter change for hortonworks/ambari installation

robi — Mon, 25 Jan 2016 07:48:08 GMT

to disable THP

if test -f /sys/kernel/mm/redhat_transparent_hugepage/defrag; then echo never > /sys/kernel/mm/redhat_transparent_hugepage/defrag fi
then I got
>
dont know what to do next.

Re: list of RHEL kernel parameter change for hortonworks/ambari installation

robi — Mon, 25 Jan 2016 07:48:44 GMT

I made all other changes ok.

Re: list of RHEL kernel parameter change for hortonworks/ambari installation

nsabharwal — Mon, 25 Jan 2016 08:00:51 GMT

@Robin Dong

You have to do this in all the nodes.

*** Disable THP ***

In ambari host vi /etc/rc.local  and add following lines

if test -f /sys/kernel/mm/transparent_hugepage/enabled; then
echo never > /sys/kernel/mm/transparent_hugepage/enabled
fi
if test -f /sys/kernel/mm/transparent_hugepage/defrag; then echo never > /sys/kernel/mm/transparent_hugepage/defrag
fi

Re: list of RHEL kernel parameter change for hortonworks/ambari installation

aervits — Mon, 25 Jan 2016 08:00:59 GMT

@Robin Dong

please view the following scripts. Link

Re: list of RHEL kernel parameter change for hortonworks/ambari installation

robi — Mon, 25 Jan 2016 21:27:55 GMT

this is the best answer for my question.

Re: list of RHEL kernel parameter change for hortonworks/ambari installation

aervits — Mon, 25 Jan 2016 21:33:30 GMT

@Robin Dong please accept the best answer, it is not clear what answer solved your problem.