gistfile1.txt

### MongoDB Backup

----

**Shell Script / Cron Job**



File :

`/usr/local/bin/mongo_backup.sh`

Contents:

```
#!/bin/bash

#--------------------------------------------
#  Enviroment Variables
#--------------------------------------------

MONGO_USERNAME=""
MONGO_PASSWORD=""

MONGO_NODE_1=""
MONGO_NODE_2=""
MONGO_NODE_3=""

MONGO_PORT="27017"
MONGO_URI="$MONGO_NODE_1:$MONGO_PORT,$MONGO_NODE_2:$MONGO_PORT,$MONGO_NODE_3:$MONGO_PORT"

BACKUPS_DIR="/data/backups/mongodb/"
mkdir -p $BACKUPS_DIR

TIMESTAMP=`date -Iseconds`
BACKUP_NAME="mongodb-rs0-fullbackup_$TIMESTAMP"

DAYSTORETAINBACKUP="1"

echo "--------------------------------------------"
echo "Database backup in progress!"
echo "--------------------------------------------"

# run mongodump
mongodump \
--uri="mongodb://$MONGO_URI" \
--username="$MONGO_USERNAME" \
--password="$MONGO_PASSWORD" \
--authenticationDatabase="admin" \
--out="$BACKUPS_DIR" \
--gzip

# archive mongodump
tar -zcvf $BACKUPS_DIR/$BACKUP_NAME.tgz $BACKUPS_DIR/

# remove backups older than 1 day
find $BACKUPS_DIR -type f -mtime +$DAYSTORETAINBACKUP -exec rm {} +

echo "--------------------------------------------"
echo "Database backup complete!"
echo "--------------------------------------------"
```


Add Cron Job:

`crontab -e`

Contents:

```
# Everyday at 18:00
# m h  dom mon dow   command
  * 18 *   *   *     /bin/bash /usr/local/bin/mongo_backup.sh
```

gistfile2.txt

#!/bin/bash

# ===================================
# ########## Bash Colours ###########
# ===================================
NC='\033[31;0m'       # no colors or formatting
RED='\033[0;31;1m'    # print text in bold Red
GRE='\033[0;32;1m'    # print text in bold Green
YEL='\033[0;33;1m'    # print text in bold Yellow
BLU='\033[0;34;1m'    # print text in bold Blue
PUR='\033[0;35;1m'    # print text in bold Purple
CYA='\033[0;36;1m'    # print text in bold Cyan
GRA='\033[0;37;1m'    # print text in bold Gray

# ===================================
# ######## ENV Variables ############
# ===================================
# Monitoring User Account (SSH & MongoDB)
MONITOR_USERNAME=""
MONITOR_PASSWORD=""

ADMIN_USERNAME=""
ADMIN_PASSWORD=""

NODE_HOSTNAME=""

# ===================================
# ####### Create Linux User #########
# ===================================
echo -e "${YEL}===================================${NC}"
echo -e "${YEL}Creating Linux User${NC}"
echo -e "${YEL}===================================${NC}"
useradd -m -s /bin/bash $MONITOR_USERNAME
echo "$MONITOR_USERNAME:$MONITOR_PASSWORD" | chpasswd

# ===================================
# ####### Create MongoDB User #######
# ===================================
echo -e "${YEL}===================================${NC}"
echo -e "${YEL}Creating Monitor User on Master Node${NC}"
echo -e "${YEL}===================================${NC}"
sudo tee mongo_add_monitor_user.js <<EOF
db = db.getSiblingDB("admin");
db.createUser(
    {
        user: "$MONITOR_USERNAME",
        pwd: "$MONITOR_PASSWORD",
        roles: [{ role: "clusterMonitor", db: "admin" }]
    }
);
EOF

mongosh "mongodb://$NODE_HOSTNAME:27017" \
--username "$ADMIN_USERNAME" \
--password "$ADMIN_PASSWORD" \
--authenticationDatabase "admin" \
--file mongo_add_monitor_user.js

mongosh "mongodb://$NODE_HOSTNAME:27017" \
--username "$ADMIN_USERNAME" \
--password "$ADMIN_PASSWORD" \
--authenticationDatabase "admin" \
--eval 'use admin' \
--eval 'printjson(db.getUsers());'

mongosh "mongodb://$NODE_HOSTNAME:27017" \
--username "$MONITOR_USERNAME" \
--password "$MONITOR_PASSWORD" \
--authenticationDatabase "admin" \
--eval 'use admin' \
--eval 'printjson(rs.status());'