Configure the ArcSight Database Instance

Once the ArcSight Database instance has been created, execute the following configuration steps:

Establish an SSH connection to the instance.
Become root and change your root password.
Create a folder for ArcSight Database by running the command:
```
mkdir /opt/vertica
```
ArcSight Database requires a minimum 2 GB swap partition, irrespective of the amount of RAM installed. In this example, we will set up a 4 GB swap partition by running the following commands:
```
dd if=/dev/zero of=/swapfile bs=1K count=4M
chmod 600 /swapfile
mkswap /swapfile
swapon /swapfile
echo "/swapfile swap swap defaults 0 0" | sudo tee -a /etc/fstab
```
To verify that the swap partition was created properly, execute the following command:
```
sudo swapon --show
```
Example Output:
```
NAME      TYPE SIZE USED PRIO
/swapfile file   4G   0B   -2
```

Next, the secondary drive needs to be partitioned and formatted. Run the lsblk command to list all the drives on the instance.

Example command and output:

# lsblk

NAME   MAJ:MIN     RM  SIZE     RO TYPE     MOUNTPOINT
sda	      8:0            0    20G      0    disk
├─sda1       8:1            0    200M   0    part      /boot/efi
└─sda2        8:2           0    19.8G   0    part /
sdb              8:16          0     256G    0    disk

Create partitions on the datadisk using the fdisk command and the 256 GB attached drive:
```
# fdisk  /dev/sdb
```
This command will request several inputs, the answers should be:
- Command (m for help): n for new
- Partition type: p for primary
- Partition number: 1 (default)
- First sector: enter a value, or accept the default value
- Last sector: enter a value, or accept the default value
The result of this creation command should be a message announcing that a partition was created with a size of 256 (in this example).
```
Created a new partition 1 of type 'Linux' and of size 256 GiB.
```
A final command must be entered to save the changes and exit fdisk:
- Command (m for help): w for write

Once the process above has finished, run the lsblk command again to verify the creation of a new partition under sdb.

Example output:

NAME   MAJ:MIN     RM  SIZE     RO TYPE     MOUNTPOINT
sda	      8:0            0    20G      0    disk
├─sda1       8:1            0    200M   0    part      /boot/efi
└─sda2        8:2           0    19.8G   0    part /
sdb              8:16          0     256G    0    disk
└─sdb1       8:17          0      256G    0    part

Format the new partition with the following command:
```
mkfs.ext4 /dev/sdb1
```
Obtain the last created disk's UUID by running this command:
```
blkid
```
Take note of the sdb1 partition UUID value.
Use the value from the previous step to modify the /etc/fstab file, by adding the following line:
```
UUID=<UUID sdb1>    /opt/vertica  ext4	 defaults  0 0
```
Where:

<UUID sdb1> is the value obtained for the sdb1 partition UUID.
Mount all by running the following command:
```
mount -a
```

Run the lsblk command one last time to verify that the sdb1 partition now contains the /opt/vertica under MOUNTPOINT.

Example output:

NAME   MAJ:MIN     RM  SIZE     RO TYPE           MOUNTPOINT
sda	      8:0            0    20G      0    disk
├─sda1       8:1            0    200M   0    part      /boot/efi
└─sda2        8:2           0    19.8G   0    part /
sdb              8:16          0     256G    0    disk
└─sdb1       8:17          0      256G    0    part  /opt/vertica