There are moments when simple tasks can slow down our progress, often because they're not part of our regular routine. A recent experience brought this to my attention when I decided to delve into self-hosting for Windmill.dev and Supabase.
I realized that I needed external references to navigate the foundational aspects due to the multitude of available approaches. This post serves as a record of this experience, with the hope that the lessons learned can be valuable in future, more intricate endeavors.
Objective: Provision Instance in OCI, with external Block volumes to cater to Different Docker Services
Create compute instance through OCI Console
Create Instance
With below information:
Image: Oracle Linux 8
Shape: Ampere VM.Standard.A1.Flex
Cost: CHF 2.00/month
Subnet: Public
Add SSH Keys: Yes
Create Block Volumes through OCI Console
Create Block Volume
With below information:
Volume size: 50 GB Estimated Price: CHF 0.02301885/GB
Volume performance: Balanced 10 VPUs at CHF 0.00153459/PU/GB
IOPS: 25,000 IOPS (60 IOPS/GB)
Attach the Block Volume to the Instance
Navigate to Attached Instances on Block Volume Screen
Attach with below information
Attachment type: ISCSI
Access Type: Read/Write
Instance: Created in Step 1
Device path: /dev/oracleoci/oraclevdb
Run iSCSI commands & information
iSCSI commands to connect should be run using the commands shown "Attached Block Volumes"
Remote SSH to the Instance to run the commands
ssh -i <Your SSH Private Key> opc@<PUBLIC_IP>
sudo iscsiadm -m node -o new -T ...
sudo iscsiadm -m node -o update -T ...
sudo iscsiadm -m node -T ...
Create Disk Partition, Create File System Mount File System
sudo fdisk -l /dev/oracleoci/oraclevdb
sudo mkfs -t ext4 /dev/oracleoci/oraclevdb
Mount file system
sudo mkdir /vol
sudo mount /dev/oracleoci/oraclevdb /vol
OCI Block Volume is now mounted on Instance under the path /vol
Entry in /etc/fstab file for mounting after instance restart
/dev/oracleoci/oraclevdb /var/html-bv ext4 defaults,_netdv,nofail 0 2
How to Detach
- Unmount the drive
sudo umount /vol
- Run the disconnect commands
sudo iscsiadm -m node -T iqn....
sudo iscsiadm -m node -o delete -T iqn....
Find the commands below iSCSI commands & information
- Detach the instance
Blockvoulume is extended, How to make it available
After extending the Blockvolume, commands to run for repartition
ubuntu@instance-wordpress-template-755807:~$ sudo parted /dev/oracleoci/oraclevdb
GNU Parted 3.4
Using /dev/sdb
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) unit s
(parted) print
Model: ORACLE BlockVolume (scsi)
Disk /dev/sdb: 4294967296s
Sector size (logical/physical): 512B/4096B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 2048s 2147483647s 2147481600s primary ext4
(parted) rm 1
Warning: Partition /dev/sdb1 is being used. Are you sure you want to continue?
Yes/No? Yes
Error: Partition(s) 1 on /dev/sdb have been written, but we have been unable to inform the kernel of the change, probably
because it/they are in use. As a result, the old partition(s) will remain in use. You should reboot now before making further
changes.
Ignore/Cancel? Ignore
(parted) mkpart
Partition type? primary/extended? primary
File system type? [ext2]? ext4
Start? 2048
End? 100%
(parted) quit
Information: You may need to update /etc/fstab.
Resize the extended Block Volume
sudo resize2fs /dev/oracleoci/oraclevdb1
df -h
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