1 Go to ESXi dashboard, expand the hard disk to expected size. Here I will resize my disk from 203G to 1100G.

2 show current disk capacity

➜  ~ df -h
Filesystem             Size  Used Avail Use% Mounted on
...
/dev/sda1              203G  161G   32G  84% /
...

3 use parted to show and resize disk. You may need to install parted if it was not installed.

➜  ~ sudo parted
GNU Parted 3.5
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print                                                            
Model: VMware Virtual disk (scsi)
Disk /dev/sda: 1100GB <------------- LOOK HERE
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start   End    Size    Type      File system     Flags
 1      1049kB  222GB  222GB   primary   ext4            boot
 2      222GB   223GB  1022MB  extended
 5      222GB   223GB  1022MB  logical   linux-swap(v1)  swap

 (parted) resizepart  1                                                    
Warning: Partition /dev/sda1 is being used. Are you sure you want to continue?
Yes/No? Yes
End?  [222GB]? 1100GB
Error: Can't have overlapping partitions.
(parted)  

Here we can see Disk of /dev/sda is totally: 1100GB.

And I want to resize part 1 with command resizepart <part number>. But failed because there are 2 partition after it.

4 Backup your data and remove the following partition.

 # delete swap partition
sudo swapoff -a
sudo parted /dev/sda rm 5

# delete the extended partition
sudo parted /dev/sda rm 2

5 Resize

 # Resize /dev/sda1
 sudo parted /dev/sda resizepart 1 1100GB

 # Resize the Filesystem
 sudo resize2fs /dev/sda1

6 Then you can see:

➜  ~ df -h
Filesystem             Size  Used Avail Use% Mounted on
...
/dev/sda1             1007G  194G  771G  21% /
...