MongoDB upgrade scripts

bin/upgrade/DEV/upgrade.mongo.80.sh

@@ -0,0 +1,137 @@
+#!/bin/bash
+
+#we have to check since we cannot continue unless
+if [ -f /etc/redhat-release ]; then
+    CENTOS_MAJOR="$(cat /etc/redhat-release |awk -F'[^0-9]+' '{ print $2 }')"
+
+    if [[ "$CENTOS_MAJOR" != "8" && "$CENTOS_MAJOR" != "9" ]]; then
+        echo "Unsupported OS version, only support CentOS/RHEL 8 and 9."
+        exit 1
+    fi
+fi
+
+if [ -f /etc/lsb-release ]; then
+    UBUNTU_YEAR="$(lsb_release -sr | cut -d '.' -f 1)";
+    UBUNTU_RELEASE="$(lsb_release -cs)"
+
+    if [[ "$UBUNTU_YEAR" != "20" && "$UBUNTU_YEAR" != "22" && "$UBUNTU_YEAR" != "24" ]]; then
+        echo "Unsupported OS version, only support Ubuntu 20 and 22 and 24."
+        exit 1
+    fi
+fi
+
+#check if authentication is required
+isAuth=0
+if grep -Eq '^\s*authorization\s*:\s*enabled' /etc/mongod.conf; then
+    isAuth=1
+fi
+
+#check if we have previous upgrade needed
+FEATVER=$(mongosh admin --eval "printjson(db.adminCommand( { getParameter: 1, featureCompatibilityVersion: 1 } ).featureCompatibilityVersion)" --quiet);
+VER=$(mongod -version | grep "db version" | cut -d ' ' -f 3 | cut -d 'v' -f 2)
+
+if [ "$isAuth" -eq "1" ]; then
+    echo "Since authentication is enabled, we cannot verify if you need to run this upgrade script"
+    echo ""
+    echo "Please run this command with authentication parameters:"
+    echo ""
+    echo "mongosh admin --eval \"db.adminCommand({ getParameter: 1, featureCompatibilityVersion: 1 } )\""
+    echo ""
+    echo "and continue only if \"featureCompatibilityVersion\" is 7.0 "
+    echo ""
+    read -r -p "Is your \"featureCompatibilityVersion\" version is 7.0? [y/N] " response
+    if [[ "$response" =~ ^([yY][eE][sS]|[yY])$ ]]
+    then
+        echo "Continue upgrading"
+    else
+        echo "Stopping script"
+        exit 0;
+    fi
+
+fi
+
+if [ -x "$(command -v mongosh)" ]; then
+    if echo "$VER" | grep -q -i "8.0" ; then
+        if echo "$FEATVER" | grep -q -i "7.0" ; then
+            echo "run this command to upgrade to 8.0";
+            echo "mongosh admin --eval \"db.adminCommand( { setFeatureCompatibilityVersion: \\\"8.0\\\", confirm: true } )\"";
+        else
+            echo "We already have version 8.0";
+        fi
+        exit 0;
+    elif echo "$VER" | grep -q -i "7.0" ; then
+        if echo "$FEATVER" | grep -q -i "6.0" ; then
+            echo "run this command before upgrading to 8.0 and rerunning this script";
+            echo "mongosh admin --eval \"db.adminCommand( { setFeatureCompatibilityVersion: \\\"7.0\\\", confirm: true } )\"";
+            exit 0;
+        else
+            echo "Upgrading to MongoDB 8.0";
+        fi
+    else
+        echo "Unsupported MongodB version $VER";
+        echo "Upgrade to MongoDB 7.0 first and then run this script";
+        exit 1;
+    fi
+
+    if [ -f /etc/redhat-release ]; then
+        #backup of systemd unit file and mongod.conf file
+        \cp /usr/lib/systemd/system/mongod.service /usr/lib/systemd/system/mongod.service.bak
+        \cp -f /etc/mongod.conf /etc/mongod.conf.bak
+        #uninstall mognodb
+        yum erase -y mongodb-org mongodb-org-mongos mongodb-org-server mongodb-org-shell mongodb-org-tools
+    fi
+
+    if [ -f /etc/lsb-release ]; then
+        #uninstall mognodb
+        apt-get remove -y mongodb-org mongodb-org-mongos mongodb-org-server mongodb-org-shell mongodb-org-tools
+    fi
+fi
+
+if [ -f /etc/redhat-release ]; then
+    #install latest mongodb
+    #select source based on release
+echo "[mongodb-org-8.0]
+name=MongoDB Repository
+baseurl=https://repo.mongodb.org/yum/redhat/${CENTOS_MAJOR}/mongodb-org/8.0/x86_64/
+gpgcheck=1
+enabled=1
+gpgkey=https://pgp.mongodb.com/server-8.0.asc" > /etc/yum.repos.d/mongodb-org-8.0.repo
+
+    yum install -y mongodb-org
+    \cp -f /etc/mongod.conf.bak /etc/mongod.conf
+fi
+
+if [ -f /etc/lsb-release ]; then
+    #install latest mongodb
+	curl -fsSL https://www.mongodb.org/static/pgp/server-8.0.asc | sudo gpg -o /usr/share/keyrings/mongodb-server-8.0.gpg --dearmor
+
+    echo "deb [ arch=amd64,arm64 signed-by=/usr/share/keyrings/mongodb-server-8.0.gpg ] https://repo.mongodb.org/apt/ubuntu ${UBUNTU_RELEASE}/mongodb-org/8.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-8.0.list
+    apt-get update
+    #install mongodb
+    apt-get -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" install -y mongodb-org --force-yes || (echo "Failed to install mongodb." ; exit)
+fi
+
+if [ -f /etc/redhat-release ]; then
+    #Restoring systemd unit file
+    \cp -f /usr/lib/systemd/system/mongod.service.bak /usr/lib/systemd/system/mongod.service
+    systemctl daemon-reload
+fi
+
+#mongodb might need to be started
+systemctl restart mongod || echo "mongodb systemctl job does not exist"
+
+#nc not available on latest centos
+#until nc -z localhost 27017; do echo Waiting for MongoDB; sleep 1; done
+mongosh --nodb --eval 'var conn; print("Waiting for MongoDB connection on port 27017. Exit if incorrect port"); var cnt = 0; while(!conn && cnt <= 300){try{conn = new Mongo("localhost:27017");}catch(Error){}sleep(1000);cnt++;}'
+
+if [ "$isAuth" -eq "1" ]; then
+    echo "run this command with authentication to upgrade to 8.0"
+    echo "mongosh admin --eval \"db.adminCommand( { setFeatureCompatibilityVersion: \\\8.0\\\", confirm: true } )\""
+elif ! mongosh admin --eval "printjson(db.adminCommand( { getParameter: 1, featureCompatibilityVersion: 1 } ))" ; then
+    echo "Could not connect to MongodB, run this command when Mongo is up and running"
+    echo "mongosh admin --eval \"db.adminCommand( { setFeatureCompatibilityVersion: \\\"8.0\\\", confirm: true } )\""
+else
+    mongosh admin --eval "printjson(db.adminCommand( { getParameter: 1, featureCompatibilityVersion: 1 } ))"
+    mongosh admin --eval "db.adminCommand( { setFeatureCompatibilityVersion: \"8.0\", confirm: true } )"
+    echo "Finished upgrading script"
+fi