1. MongoDB Program Installation Guide
Version Author Abstract Release date
0.1 Philip zhong Draft 2012-07-09
Tuning Operating System Parameters............................................................................................ 2
Install MongoDB Program ................................................................................................................. 3

2. Tuning Operating System Parameters
1. Check kernel version，make sure version great equal 2.6.32
#cat /proc/version
2. Check File System Version, make sure is EXT4
# df -Th -m|grep -i “ext4”
3. Set File Descriptor Limit and User process limit
#vi /etc/sysctl.conf
fs.file-max=65536
#vi /etc/security/limits.conf
* soft nproc 2047 --noproc max process
* hard nproc 16384
* soft nofile 1024 --nofile max files
* hard nofile 65536
4. Tuning network
#vi /etc/sysctl.conf
net.ipv4.ip_local_port_range=1024 65000
net.core.optmem_max = 262144
net.core.rmem_default = 262144
net.core.wmem_default = 262144
net.core.rmem_max = 262144
net.core.wmem_max = 262144
# sysctl -p
5. Turn off atime for the data volume

3. # mount -o noatime -o nodiratime -o remount #your data volume #
Then edit /etc/fstab and add “noatime, nodiratime” for you data volume.
For example:
#mount -o noatime -o nodiratime -o remount /opt
# UUID=8fa0b4a0-d845-4c6d-a507-2b38a50d5607 /opt ext4
defaults,noatime,nodiratime 12
6. Disable NUMA
#echo 0>/proc/sys/vm/zone_reclaim_mode
Install MongoDB Program
1. Add MongoDB new group and User
#su - root
# groupadd -g 20001 mongodb
# useradd -u 20001 -g mongodb mongodb
#passwd mongodb
2. Append max process and max files limitation for new user
# su - mongodb
# vi .bash_profile
ulimit -u 16384 -n 65536
3. Install mongoDB Program
#su - root
# chown mongodb:mongodb /opt
#su -mongodb
#tar xzvf mongodb-linux-x86_64-2.0.6.tgz
# mv mongodb-linux-x86_64-2.0.6 /opt/mongodb206