nanusdad

Increasing size of partition in Ubuntu 20.04

df -h
vgdisplay
lvdisplay
lvextend -l +100%FREE /dev/ubuntu-vg/ubuntu-lv
lvdisplay
df -h
resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv
df -h

nanusdad

Alfresco ACS deployment (Community) with docker-compose

Getting started

git clone https://github.com/Alfresco/acs-deployment
cd acs-deployment/docker-compose
cp docker-compose.yml docker-compose.yml-orig # save original
cp community-docker-compose.yml docker-compose.yml
docker compose up 
# OR

nanusdad

Adding additional disk in Ubuntu 20.04

Check if disk is physically / virtually added to the system

lshw -C disk

Look for the logical name

e.g.

  *-disk:1
 description: SCSI Disk

nanusdad

Adding more than 2TB disk to Windows

Maximum capacity of MBR partition tables is only about 2 terabytes. One can use a drive that's larger than 2 terabytes with MBR, but only the first 2 terabytes of the drive will be used. The rest of the storage on the drive will be wasted.

GPT partition tables offer a maximum capacity of 9.7 zetabytes.

If a new large disk has been added - Use Disk Management or diskpart to initialize disk with GPT and then create a volume.

If disk already has MBR partition tables then follow tests below -

nanusdad

Alfresco on Docker cheatsheet

Create PostgreSQL dump

# find postgresql container ID
sudo  docker ps | grep postgres | awk '{ print $1 }'

# open shell on container (replace container id)
sudo docker exec -it cb96ca00911e /bin/bash

nanusdad

Raspberry Pi - Getting hardware information

cat /proc/cpuinfo                             # CPU info
cat /sys/firmware/devicetree/model            # Model info
cat /proc/version                             # Software info
free -h                                       # RAM Details

nanusdad

Docker configuration behind HTTP or HTTPS proxy

Create http-proxy configuration file

sudo mkdir -p /etc/systemd/system/docker.service.d
sudo vi /etc/systemd/system/docker.service.d/http-proxy.conf

Add lines similar to the ones below and save file

[Service]
Environment="HTTP_PROXY=http://proxy.example.com:3128"

nanusdad

PopOS (Ubuntu based) Install Related Quirks

APT proxy

sudo vi /etc/apt/apt.conf.d/proxy.conf

#Add the following lines:

Acquire::http::Proxy "http://username:password@proxy-server-ip:8181/";
Acquire::https::Proxy "https://username:password@proxy-server-ip:8182/";

nanusdad

Setting up sendmail relay on Ubuntu 22.04 (with PHP)

Test relay, needs host and port

One can use telnet to test; output will be similar to below. (use your email instead of [email protected])

telnet 172.16.10.100 8081
Trying 172.16.10.100...
Connected to 172.16.10.100.
Escape character is '^]'.
220 mailagent.test.com ESMTP Postfix (Ubuntu)

nanusdad

Setting up SSL cert with nginx

1. Copy the .crt file and encrypted .key file to nginx server
2. Decrypt the .key file

openssl rsa -in encrypted.key -out decrypted.key

4. Concatenate the .crt and and encrypted .key file

cat domain.crt encrypted.key > domain.pem