Category: Server

Log rotation on docker compose

To setup log rotation on docker compose simply add this

logging:
  driver: "json-file"
  options:
    max-size: "1k"
    max-file: "3"

so example docker-compose.yml file

database:
  image: postgres:14.5-alpine
  restart: always
  ports:
    - "5432:5432"
  environment:
    POSTGRES_USER: user
  volumes:
    - ./data:/var/lib/postgresql/data:rw
  logging:
    driver: "json-file"
    options:
      max-size: "1k"
      max-file: "3"

January 8, 2025

Volume resize on Linode Ubuntu VPS
I recently had to upgrade the amount of storage on an external storage volume on a linode node and thought it would help to keep a note of the command to resize the volume on ubuntu
```
resize2fs /dev/sdc
```
where /dev/sdc is the attached volume
January 8, 2025
Private Docker Registry
I’ve recently started using a private docker registry for some docker images i’ve been using for certain projects that require special setup.

To create the image
```
docker build -t docker.example.com/directory/image:tag .
```
Then I find the ID of the image using
```
docker image ls
```
Then when i’ve got the image ID I can tag the image
```
docker tag 12345678 docker.example.com/directory/image:tag
```
After that I can then push to the repository
```
docker push docker.example.com/directory/image:tag
```
November 22, 2024
Handy du commands in Linux
Transfering files between servers and making sure directory sizes match has lead me down a path of exploring the du command in detail – heres some helpful commands I’ve been using to list directory sizes. I’ve been using ubuntu but should work in debian etc too.

To list all top level directories
```
du -h -d 1
```
To list all directories that match a directory name
```
du -hsc Name*
```
this one lists top level where directory name stars with Name and the wildcard * at the end – Name, NameOne, NameTwo etc

Another handy feature is adding sort in reverse order with human readable sizes by piping the output into the sort command
```
du -hsc Name* | sort -hr
```
also watching the directory sizes whilst transferring files is helpful!
```
watch -n 10 du -h -d 1
```
where the -n 10 is the amount of seconds between refreshes
November 20, 2024
Install Docker on Ubuntu 24.04
Just a quick snippet to remind me quickly how to install docker on Ubuntu 24.04
```
curl -fsSL https://get.docker.com -o get-docker.sh
chmod a+x get-docker.sh
./get-docker.sh
```
November 20, 2024

CloudPanel Installation

Install cloudpanel on a Ubuntu 24.04 LTS server

ssh root@yourIpAddress

apt update && apt -y upgrade && apt -y install curl wget sudo

curl -sS https://installer.cloudpanel.io/ce/v2/install.sh -o install.sh; \
echo "2aefee646f988877a31198e0d84ed30e2ef7a454857b606608a1f0b8eb6ec6b6 install.sh" | \
sha256sum -c && sudo bash install.sh

Once install access via

https://yourIpAddress:8443

Updated instructions can be found here:

https://www.cloudpanel.io/docs/v2/getting-started/other/

November 13, 2024

Rclone Sync Command
Sample of the rclone sync command thats setup to transfer 10 files at a time
```
rclone sync --progress --multi-thread-streams=10 --transfers=10 /home/user/folder/ /mnt/ShareName/
```
Another handy little flag is the check first flag which does all the checking first before starting transfers
```
--check-first
```
and always remember to dry run first
```
--dry-run
```
November 13, 2024

FStab SMB Drives

Simple snippet to remember how to add smb mounts to /etc/fstab

mkdir /mnt/ShareName
chmod 0755 /mnt/ShareName
nano /etc/fstab

//ipaddress/ShareName /mnt/ShareName cifs username=user,password=pass,rw,nounix,iocharset=utf8,file_mode=0777,dir_mode=0777 0 0

ctrl x to save
mount -a

To unmount the drive

umount /mnt/ShareName

Important note to never unmount all drives!

umount -a

November 13, 2024