Splunk on CentOS 6 相关系统参数调整

for Splunk forwarder, indexer, search head

ulimit -n
vi /etc/security/limits.conf
* soft nofile 65535
* hard nofile 65535

ulimit -u
vi /etc/security/limits.d/90-nproc.conf
* soft nproc 65535
* hard nproc 65535
root soft nproc 65535
root hard nproc 65535

disable Transparent Huge Page

echo "echo never > /sys/kernel/mm/redhat_transparent_hugepage/enabled" >> /etc/rc.local
echo "echo never > /sys/kernel/mm/redhat_transparent_hugepage/defrag" >> /etc/rc.local
echo "echo no > /sys/kernel/mm/redhat_transparent_hugepage/khugepaged/defrag" >> /etc/rc.local