aws-userdata.sh

#!/bin/bash

url="https://gist.githubusercontent.com/RichardBronosky/2d04c7c2e9a5bea67cd9760a35415a3f/raw/install_mongo.sh"
script="/tmp/userdata.sh"

echo "Running userdata script as $(whoami) from $(pwd)"

# Log commands to stdout and vicariously /var/log/cloud-init-output.log
set -o xtrace
# Exit on error
set -o errexit
# Exit on use of unset variables
set -o nounset
# Exit and report on pipe failure
set -o pipefail

# Fetch setup script
curl -L "$url" > $script

# Make setup script executable
chmod +x $script

# Execute setup script
$script

install_mongo.sh

#!/bin/bash

# Log commands to stdout and vicariously /var/log/cloud-init-output.log
set -o xtrace
# Exit on error
set -o errexit
# Exit on use of unset variables
set -o nounset
# Exit and report on pipe failure
set -o pipefail

# If not running as root, rerun via sudo
if [[ $EUID > 0 ]]; then
    exec sudo "$0" "$@"
fi

# Let apt know not to error due to lack of Dialog
export DEBIAN_FRONTEND=noninteractive

# Add Mongo repo to sources
tee /etc/apt/sources.list.d/mongodb-org-3.4.list <<EOF
deb [ arch=amd64,arm64 ] http://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.4 multiverse
EOF

# Install packages
apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 0C49F3730359A14518585931BC711F9BA15703C6
apt-get update
for package in docker.io mongodb-org linux-image-extra-$(uname -r) linux-image-extra-virtual; do
    apt-get install -y $package
done

# Package specific actions
# add user:ubuntu to group:docker
usermod -aG docker ubuntu
# create mongodb data dir
mkdir -p /data/db/dump
chown ubuntu:ubuntu /data/db/dump

# Enable and start services
for service in mongod; do
    systemctl status $service || true # will return code 3 the first time, but gives good log info
    systemctl unmask $service
    systemctl enable $service
    systemctl start  $service
    systemctl status $service
done

# Reboot to make docker changes take effect
reboot

replica_set_init.sh

#!/bin/bash

# Usage:
# 1. Run this script with no arguements on every SECONDARY node in the replica set.
# 2. Run this script on the PRIMARY node with a single argument of `-a` followed by pingable names for each secondary (zero or more).

# cd /tmp; curl -LO https://gist.github.com/RichardBronosky/2d04c7c2e9a5bea67cd9760a35415a3f/raw/replica_set_init.sh

# Log commands to stdout
set -o xtrace
# Exit on error
set -o errexit
# Exit on use of unset variables
set -o nounset
# Exit and report on pipe failure
set -o pipefail

# from: https://docs.mongodb.com/manual/tutorial/deploy-replica-set/

# Update MongoDB config to support the replica set
sudo cp /etc/mongod.conf /etc/mongod.rs-prod.conf
sudo mv /etc/mongod.conf /etc/mongod.org.conf
sudo ln -s /etc/mongod.rs-prod.conf /etc/mongod.conf
sudo patch /etc/mongod.rs-prod.conf <<EOF
--- /etc/mongod.conf	2017-01-22 20:37:38.628479600 +0000
+++ /etc/mongod.rs-prod.conf	2017-01-22 21:00:28.430689201 +0000
@@ -21,7 +21,7 @@
 # network interfaces
 net:
   port: 27017
-  bindIp: 127.0.0.1
+#  bindIp: 127.0.0.1


 #processManagement:
@@ -30,7 +30,8 @@

 #operationProfiling:

-#replication:
+replication:
+  replSetName: rs-prod

 #sharding:

EOF
sudo systemctl restart mongod

# "on one and only one member of the replica set" https://goo.gl/gS6Kw5
if [[ ${1-} == '-a' ]]; then
    mongo -eval 'rs.initiate()'
    shift
    for node in $@; do
        mongo -eval "rs.add('$node')"
    done
fi

uat_mongodb_upgrade_from_prod.sh

#!/bin/bash

# cd /tmp; curl -LO https://gist.githubusercontent.com/RichardBronosky/2d04c7c2e9a5bea67cd9760a35415a3f/raw/uat_mongodb_upgrade_from_prod.sh

# Log commands to stdout
set -o xtrace
# Exit on error
set -o errexit
# Exit on use of unset variables
set -o nounset
# Exit and report on pipe failure
set -o pipefail

cd /data/db
mongodump -h prodmongo12.ies

# Get major versions from https://hub.docker.com/r/library/mongo/tags/
step=0
for major_version in 2.6.12 3.0.14 3.2.11 3.4.1; do
    sudo docker stop some-mongo ||:
    sudo docker rm   some-mongo ||:
    sudo docker run --name some-mongo -v /data/db:/data/db -d mongo:$major_version
    set +o errexit
    false; while [[ $? > 0 ]]; do
        sleep 0.5
        sudo docker exec -it some-mongo mongo --eval 'printjson((new Mongo()).getDBNames())'
    done
    set -o errexit
    if (( $step == 0 )); then
        sudo docker exec -it some-mongo mongorestore /data/db/dump
    fi
    ((step += 1))
done

# Finish up with docker
sudo rm -rf /data/db/dump/*
sudo docker exec -it some-mongo bash -c 'cd /data/db; mongodump'
sudo docker stop some-mongo
sudo docker rm   some-mongo

# Load upgraded data into latest version of MongoDB (WiredTiger storage engine will be used)
mongorestore /data/db/dump
sudo rm -rf /data