shell script - check mongod server is running

Question

I have a shell script to do some mongo db actions:

e.g. mongo testdb --eval \"db.dropDatabase()\"

BUT, if the mongod server is not running, I get:

Answer 1

You should be able to create a bash script like this:

mongo --eval "db.stats()"  # do a simple harmless command of some sort

RESULT=$?   # returns 0 if mongo eval succeeds

if [ $RESULT -ne 0 ]; then
    echo "mongodb not running"
    exit 1
else
    echo "mongodb running!"
fi