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Upgrade from MongoDB 4.2 to MongoDB 4.4
Set these two environment variables with your MongoDB admin username and password so that these script examples can be used:
export YOUR_USERNAME=opUserRW
export YOUR_PASSWORD=t0pS3cr3tpw
Another useful alias to show fcv is
alias showfcv='mongo -u $YOUR_USERNAME -p $YOUR_PASSWORD --authenticationDatabase=admin --quiet --eval "db.adminCommand( { getParameter: 1, featureCompatibilityVersion: 1 } )"'
Prepare the Database for Upgrade
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As before, the check the featureCompatibilityVersion again confirming the correct value
Example Command and Output
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systemctl stop mongod
wget -qO - https://www.mongodb.org/static/pgp/server-4.4.asc | sudo apt-key add
echo "deb [ trusted=yes ] http://repo.mongodb.org/apt/debian buster/mongodb-org/4.4 main" | sudo tee /etc/apt/sources.list.d/mongodb-org-4.4.list
sudo apt-get update
sudo apt-get upgrade mongodb-org -y --allow-unauthenticated
mongod --version
systemctl stop mongod
systemctl start mongod
systemctl daemon-reload
systemctl is-active mongod
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Check the database compatibility mode is set to "4.4"
mongo -u $YOUR_USERNAME -p $YOUR_PASSWORD --authenticationDatabase=admin --quiet --eval 'db.adminCommand( { getParameter: 1, featureCompatibilityVersion: 1 } )'
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The result should be as follows ensuring that the value 4.4 is set
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As before, the check the featureCompatibilityVersion again confirming the correct value
Example Command and Output
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systemctl stop mongod
wget -qO - https://www.mongodb.org/static/pgp/server-5.0.asc | sudo gpg -o /usr/share/keyrings/mongodb-server-5.0.gpg --dearmor
echo "deb [ signed-by=/usr/share/keyrings/mongodb-server-5.0.gpg] http://repo.mongodb.org/apt/debian bullseye/mongodb-org/5.0 main" | sudo tee /etc/apt/sources.list.d/mongodb-org-5.0.list
sudo apt-get update
sudo apt-get upgrade -y mongodb-org
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If you get an error
Errors were encountered while processing:
/var/cache/apt/archives/mongodb-org-database-tools-extra_5.0.27_amd64.deb
Fix it by using: sudo dpkg -i --force-overwrite /var/cache/apt/archives/mongodb-org-database-tools-extra_5.0.27_amd64.deb
then sudo apt-get upgrade -y mongodb-org
and answer N to keep your currently installed version of /etc/mongod.conf -------------------------------------
systemctl stop mongod
; systemctl start mongod
; systemctl daemon-reload
; systemctl is-active mongod ; systemctl status mongod
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Complete the upgrade with the following commands and retest. If you skip the stop/start sequence above the following command will fail.
mongo -u $YOUR_USERNAME -p $YOUR_PASSWORD --authenticationDatabase=admin --quiet --eval 'db.adminCommand( { setFeatureCompatibilityVersion: "5.0" } )'
mongo -u $YOUR_USERNAME -p $YOUR_PASSWORD --authenticationDatabase=admin --quiet --eval 'db.adminCommand( { getParameter: 1, featureCompatibilityVersion: 1 } )'
systemctl stop mongod
systemctl start ; systemctl start mongod ; systemctl status mongod
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As before, check the featureCompatibilityVersion output from above is "5.0"
Example Command and Output
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As before, the check the featureCompatibilityVersion again confirming the correct value
Example Command and Output
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systemctl stop mongod
wget -qO - https://www.mongodb.org/static/pgp/server-6.0.asc | sudo gpg -o /usr/share/keyrings/mongodb-server-6.0.gpg --dearmor
echo "deb [ signed-by=/usr/share/keyrings/mongodb-server-6.0.gpg] http://repo.mongodb.org/apt/debian bullseye/mongodb-org/6.0 main" | sudo tee /etc/apt/sources.list.d/mongodb-org-6.0.list
sudo apt-get update
sudo apt-get upgrade -y mongodb-org
and answer N to keep your currently installed version of /etc/mongod.conf
systemctl stop mongod
; systemctl start mongod
; systemctl daemon-reload
; systemctl is-active mongod ; systemctl status mongod
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Complete the upgrade with the following commands and retest. If you skip the stop/start sequence above the following command will fail.
Note that you must now use the mongosh command instead of mongo
mongosh mongosh -u $YOUR_USERNAME -p $YOUR_PASSWORD --authenticationDatabase=admin --quiet --eval 'db.adminCommand( { setFeatureCompatibilityVersion: "6.0" } )'
mongosh mongosh -u $YOUR_USERNAME -p $YOUR_PASSWORD --authenticationDatabase=admin --quiet --eval 'db.adminCommand( { getParameter: 1, featureCompatibilityVersion: 1 } )'
systemctl stop mongod
systemctl start mongod
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As before, check the featureCompatibilityVersion output from above is "6.0"
Example Command and Output
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systemctl start nmis9d
/usr/local/omk/bin/checkomkdaemons.sh start
# confirm that the daemons have started
/usr/local/omk/bin/checkomkdaemons.sh status ; systemctl status nmis9d
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You can now browse to your instance of NMIS:
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