To upgrade an existing MongoDB deployment to 4.2 from 3.6
准备 mongo rpm
step1 中控机操作
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mkdir -p /data/version_pkg/mongodb
cd /data/version_pkg/mongodb
cat > wget.list <<EOF
https://repo.mongodb.org/yum/redhat/7/mongodb-org/4.2/x86_64/RPMS/mongodb-org-server-4.2.8-1.el7.x86_64.rpm
https://repo.mongodb.org/yum/redhat/7/mongodb-org/4.2/x86_64/RPMS/mongodb-org-shell-4.2.8-1.el7.x86_64.rpm
https://repo.mongodb.org/yum/redhat/7/mongodb-org/4.0/x86_64/RPMS/mongodb-org-server-4.0.18-1.el7.x86_64.rpm
https://repo.mongodb.org/yum/redhat/7/mongodb-org/4.0/x86_64/RPMS/mongodb-org-shell-4.0.18-1.el7.x86_64.rpm
EOF
wget -i wget.list
echo ${MONGODB_IP[@]} | xargs -n1 | xargs -i -P 0 rsync -a /data/version_pkg/mongodb/ root@{}:/data/version_pkg/mongodb/
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upgrade 3.6 - 4.0
step2 中控机上确认 primary 机器 ip
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/data/src/service/mongo/bin/mongo -u $MONGODB_USER -p $MONGODB_PASS \
mongodb://mongodb.service.consul:27017/admin?replicaSet=rs0 --shell <<EOF
db.isMaster()
EOF
yum -y install mongodb-org-shell-4.0.18-1.el7.x86_64.rpm
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step3 以下在所有 secondary 上操作
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yum -y install mongodb-org-shell-4.0.18-1.el7.x86_64.rpm mongodb-org-server-4.0.18-1.el7.x86_64.rpm
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1. 确认版本为 4.0
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/usr/bin/mongo --version | head -n1
/usr/bin/mongod --version | head -n1
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2. 停3.6进程
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source /data/install/utils.fc
source control.rc
stop_mongodb; removecron_for mongodb
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4. 同步配置、更新字段
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rsync -a /data/bkee/etc/mongodb.yaml /etc/mongod.conf
sed -i 's#pidFilePath: .*#pidFilePath: /var/run/mongodb/mongod.pid#' /etc/mongod.conf
sed -i 's#path: .*#path: /var/log/mongodb/mongod.log#' /etc/mongod.conf
chown -R mongod:mongod /data/bkee/public/mongodb
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5. 启动 4.0
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systemctl start mongod.service
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6. 观察进程状态，日志是否有异常
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systemctl status mongod.service
tail -f /var/log/mongod/mongod.log
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step4 在 primary 上操作
1. 下线 primary
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/data/bkee/service/mongo/bin/mongo -u $MONGODB_USER -p $MONGODB_PASS \
--port $MONGODB_PORT --authenticationDatabase admin --shell <<EOF
rs.stepDown()
rs.status()
EOF
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2. 确认已下线
3. 安装 4.0
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yum -y install mongodb-org-shell-4.0.18-1.el7.x86_64.rpm mongodb-org-server-4.0.18-1.el7.x86_64.rpm
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3. 确认版本为 4.0
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/usr/bin/mongo --version | head -n1
/usr/bin/mongod --version | head -n1
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4. 停3.6
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source /data/install/utils.fc
source control.rc
stop_mongodb; removecron_for mongodb
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5. 同步配置、更新字段
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rsync -a /data/bkee/etc/mongodb.yaml /etc/mongod.conf
sed -i 's#pidFilePath: .*#pidFilePath: /var/run/mongodb/mongod.pid#' /etc/mongod.conf
sed -i 's#path: .*#path: /var/log/mongodb/mongod.log#' /etc/mongod.conf
chown -R mongod:mongod /data/bkee/public/mongodb
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6. 启动4.0
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systemctl start mongod.service
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7. 观察进程状态，日志是否有异常
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systemctl status mongod.service
tail -f /var/log/mongodb/mongod.log
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8. 开启 4.0 的功能
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/usr/bin/mongo -u $MONGODB_USER -p $MONGODB_PASS mongodb://mongodb.service.consul:27017/admin?replicaSet=rs0 --shell <<EOF
db.adminCommand( { setFeatureCompatibilityVersion: "4.0" } )
rs.status()
EOF
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upgrade 4.0 - 4.2
step5 中控机上确认 primary 机器 ip
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/usr/bin/mongo -u $MONGODB_USER -p $MONGODB_PASS mongodb://mongodb.service.consul:27017/admin?replicaSet=rs0 --shell <<EOF
db.isMaster()
EOF
yum -y install mongodb-org-shell-4.2.8-1.el7.x86_64.rpm
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step6 在所有 secondary 上操作
1. 安装4.2
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yum -y install mongodb-org-shell-4.2.8-1.el7.x86_64.rpm mongodb-org-server-4.2.8-1.el7.x86_64.rpm
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2. 确认版本为 4.2
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/usr/bin/mongo --version | head -n1
/usr/bin/mongod --version | head -n1
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3. 启动4.2
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systemctl restart mongod.service
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4. 观察进程状态，日志是否有异常
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systemctl status mongod.service
tail -f /var/log/mongodb/mongod.log
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step7 在 primary 上操作
1. 下线 primary
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/usr/bin/mongo -u $MONGODB_USER -p $MONGODB_PASS --port $MONGODB_PORT --authenticationDatabase admin --shell <<EOF
rs.stepDown()
rs.status()
EOF
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2. 确认已下线
3. 安装 4.2
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yum -y install mongodb-org-shell-4.2.8-1.el7.x86_64.rpm mongodb-org-server-4.2.8-1.el7.x86_64.rpm
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4. 确认版本为 4.2
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/usr/bin/mongo --version | head -n1
/usr/bin/mongod --version | head -n1
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5. 启动4.2
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systemctl restart mongod.service
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6. 观察进程状态，日志是否有异常
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systemctl status mongod.service
tail -f /var/log/mongodb/mongod.log
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7. 开启 4.2 的功能
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/usr/bin/mongo -u $MONGODB_USER -p $MONGODB_PASS mongodb://mongodb.service.consul:27017/admin?replicaSet=rs0 --shell <<EOF
db.adminCommand( { setFeatureCompatibilityVersion: "4.2" } )
rs.status()
EOF
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