60 lines
2.3 KiB
Markdown
60 lines
2.3 KiB
Markdown
---
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title: PostgreSQL Database Exporting
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---
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:::danger
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TrueNAS SCALE Apps are considered Deprecated. We heavily recommend using a more mature Kubernetes platform such as "TalosOS" instead, and no longer offer an apps/charts catalogue for SCALE users to install. The below docs exist purely as historical references and may be removed at any time.
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:::
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The information below is to help with current or future migration of the Postgres databases on your SCALE system running TrueCharts apps.
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## Prerequisites
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The user running the scripts must have permissions to access the TrueNAS SCALE host shell and execute `kubectl` commands.
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## How to list database login info for TrueCharts apps
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You can use these details to login to e.g. `pgadmin`, one of the TC apps that lets you manage databases.
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```bash title="tcdbinfo.sh"
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#!/bin/bash
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# get namespaces
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namespaces=$(k3s kubectl get secrets -A | grep -E "dbcreds|cnpg-main-urls" | awk '{print $1, $2}')
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# iterate over namespaces
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( printf "Application | Username | Password | Address | Port\n"
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echo "$namespaces" | while read ns secret; do
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# extract application name
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app_name=$(echo "$ns" | sed 's/^ix-//')
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if [ "$secret" = "dbcreds" ]; then
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creds=$(k3s kubectl get secret/$secret --namespace "$ns" -o jsonpath='{.data.url}' | base64 -d)
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else
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creds=$(k3s kubectl get secret/$secret --namespace "$ns" -o jsonpath='{.data.std}' | base64 -d)
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fi
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# get username, password, addresspart, and port
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username=$(echo "$creds" | awk -F '//' '{print $2}' | awk -F ':' '{print $1}')
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password=$(echo "$creds" | awk -F ':' '{print $3}' | awk -F '@' '{print $1}')
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addresspart=$(echo "$creds" | awk -F '@' '{print $2}' | awk -F ':' '{print $1}')
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port=$(echo "$creds" | awk -F ':' '{print $4}' | awk -F '/' '{print $1}')
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# construct full address
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full_address="${addresspart}.${ns}.svc.cluster.local"
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# print results with aligned columns
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printf "%s | %s | %s | %s | %s\n" "$app_name" "$username" "$password" "$full_address" "$port"
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done ) | column -t -s "|"
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```
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## Setting up the files
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In TrueNAS SCALE, create a dataset that can house the script files. Put the `.sh` files in that dataset. Navigate to the dataset from the host shell. Make the files executable.
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```bash
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cd /mnt/tank/scripts/databases
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chmod +x tcdbinfo.sh
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```
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