MongoDB recommendations for CentOS 7 on AWS

mongo-recommendations

vim /etc/udev/rules.d/85-ebs.rules
ACTION=="add|change", KERNEL=="xvdh", ATTR{queue/scheduler}="deadline"
ACTION=="add|change", KERNEL=="xvdi", ATTR{queue/scheduler}="deadline"
ACTION=="add|change", KERNEL=="xvdj", ATTR{queue/scheduler}="deadline"

vim /usr/lib/tuned/throughput-performance/tuned.conf
Change value "readahead" to 128

yum install -y numactl
chmod u+x /etc/rc.d/rc.local
systemctl start rc-local
systemctl enable rc-local
systemctl disable chronyd
systemctl start ntpd
systemctl enable ntpd

vim /etc/rc.local
# Mongo Recommendations
echo never > /sys/kernel/mm/transparent_hugepage/enabled
echo never > /sys/kernel/mm/transparent_hugepage/defrag
echo 0 > /sys/kernel/mm/transparent_hugepage/khugepaged/defrag

vim /etc/sysctl.conf
# Mongo Recommendations
net.core.somaxconn=4096
net.ipv4.tcp_fin_timeout=30
net.ipv4.tcp_keepalive_intvl=30
net.ipv4.tcp_keepalive_time=120
net.ipv4.tcp_max_syn_backlog=4096
vm.zone_reclaim_mode=0
net.ipv4.tcp_tw_reuse=1
net.ipv4.ip_local_port_range=10000 61000

vim /etc/security/limits.d/mongod.conf
mongod   soft    nproc    64000
mongod   hard    nproc    64000
mongod   soft    nofile   64000
mongod   hard    nofile   64000

..Restart

mongodb

/log/*.log {
    daily
    rotate 7
    compress
    dateext
    missingok
    notifempty
    sharedscripts
    copytruncate
    create 640 mongod mongod
}