install mongodb-2.6.12 from the tarball

install-mongodb-2.6.12-from-tarball.sh

#!/usr/bin/env bash
# run this script from your home folder
# sudo bash
curl -O http://downloads.mongodb.org/linux/mongodb-linux-x86_64-2.6.12.tgz

tar -zxvf mongodb-linux-x86_64-2.6.12.tgz
cp mongodb-linux-x86_64-2.6.12/bin/* /usr/local/bin
groupadd mongodb
useradd --system --no-create-home -g mongodb mongodb

mkdir -p /var/log/mongodb
touch /var/log/mongodb/mongodb.log

mkdir -p /var/lib/mongodb/

chown mongodb:mongodb -R /var/lib/mongodb
chown mongodb:mongodb -R /var/log/mongodb

cat > /etc/mongod.conf <<EOF
dbpath=/var/lib/mongodb
logpath=/var/log/mongodb/mongodb.log
logappend=true
EOF

cat > /etc/systemd/system/mongodb.service <<EOF
[Unit]
Description=High-performance, schema-free document-oriented database
After=network.target

[Service]
User=mongodb
ExecStart=/usr/local/bin/mongod --config /etc/mongod.conf

[Install]
WantedBy=multi-user.target
EOF

systemctl daemon-reload
systemctl restart mongodb.service
systemctl status mongodb.service