Secure Connect Gateway: How to configure SCG if DNS is not available

Summary: This article explains how to configure Secure Connect Gateway to use /etc/hosts if no DNS server is available.

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
Check out other resources

Instructions

Add the entries below to the file /etc/init.d/after.local on the SCG Virtual Machine and reboot the SCG VM.
This will add the SCG infrastructure IP addresses to the hosts file inside the esrsde-app container after every reboot.

Steps:

  1. cd /etc/init.d
  2. vi after.local
  3. Press "i" (insert mode)
  4. Copy and paste the section below into the vi editor
  5. Press ESC, then type ":wq!" (colon, wq, exclamation, without the quotes)
  6. Type "reboot" and press return

5.16 and below:

sleep 5m
docker exec -i esrsde-app bash -c 'echo "128.221.236.246 esrs3-core.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "128.221.236.246 esrs3-coredr.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "128.221.204.207 esr3gduprd01.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "128.221.204.208 esr3gduprd02.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "128.221.204.209 esr3gduprd03.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "128.221.204.212 esr3gduprd04.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "128.221.204.214 esr3gduprd05.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "128.221.204.215 esr3gduprd06.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "168.159.209.91 esr3ghoprd01.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "168.159.209.92 esr3ghoprd02.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "168.159.209.93 esr3ghoprd03.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "168.159.209.94 esr3ghoprd04.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "168.159.209.95 esr3ghoprd05.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "168.159.209.96 esr3ghoprd06.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "137.69.120.227 esr3gscprd01.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "137.69.120.222 esr3gscprd02.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "137.69.120.223 esr3gscprd03.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "137.69.120.224 esr3gscprd04.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "137.69.120.225 esr3gscprd05.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "137.69.120.226 esr3gscprd06.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "152.62.177.21 esr3gckprd01.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "152.62.177.22 esr3gckprd02.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "152.62.177.23 esr3gckprd03.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "152.62.177.24 esr3gckprd04.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "152.62.177.25 esr3gckprd05.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "152.62.177.26 esr3gckprd06.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "152.62.177.27 esr3gckprd07.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "152.62.177.28 esr3gckprd08.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "152.62.177.29 esr3gckprd09.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "152.62.177.30 esr3gckprd10.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "152.62.177.31 esr3gckprd11.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "152.62.177.32 esr3gckprd12.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "152.62.45.21 esr3gspprd01.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "152.62.45.22 esr3gspprd02.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "152.62.45.23 esr3gspprd03.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "152.62.45.24 esr3gspprd04.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "152.62.45.25 esr3gspprd05.emc.com" >> /etc/hosts'
docker exec -i esrsde-app bash -c 'echo "152.62.45.26 esr3gspprd06.emc.com" >> /etc/hosts'

5.18 and above:

sleep 5m
docker exec -u root -i esrsde-app bash -c 'echo "128.221.236.246 esrs3-core.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "128.221.236.246 esrs3-coredr.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "128.221.204.207 esr3gduprd01.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "128.221.204.208 esr3gduprd02.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "128.221.204.209 esr3gduprd03.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "128.221.204.212 esr3gduprd04.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "128.221.204.214 esr3gduprd05.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "128.221.204.215 esr3gduprd06.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "168.159.209.91 esr3ghoprd01.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "168.159.209.92 esr3ghoprd02.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "168.159.209.93 esr3ghoprd03.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "168.159.209.94 esr3ghoprd04.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "168.159.209.95 esr3ghoprd05.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "168.159.209.96 esr3ghoprd06.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "137.69.120.227 esr3gscprd01.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "137.69.120.222 esr3gscprd02.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "137.69.120.223 esr3gscprd03.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "137.69.120.224 esr3gscprd04.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "137.69.120.225 esr3gscprd05.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "137.69.120.226 esr3gscprd06.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "152.62.177.21 esr3gckprd01.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "152.62.177.22 esr3gckprd02.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "152.62.177.23 esr3gckprd03.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "152.62.177.24 esr3gckprd04.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "152.62.177.25 esr3gckprd05.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "152.62.177.26 esr3gckprd06.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "152.62.177.27 esr3gckprd07.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "152.62.177.28 esr3gckprd08.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "152.62.177.29 esr3gckprd09.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "152.62.177.30 esr3gckprd10.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "152.62.177.31 esr3gckprd11.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "152.62.177.32 esr3gckprd12.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "152.62.45.21 esr3gspprd01.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "152.62.45.22 esr3gspprd02.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "152.62.45.23 esr3gspprd03.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "152.62.45.24 esr3gspprd04.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "152.62.45.25 esr3gspprd05.emc.com" >> /etc/hosts'
docker exec -u root -i esrsde-app bash -c 'echo "152.62.45.26 esr3gspprd06.emc.com" >> /etc/hosts'

 

Additional Information

This procedure does not work with SCG 5.28 new installs.  Procedure can be followed but upgrade to 5.30+ would be required before after.local is executed after each boot.  Commands can be manually run one time to be able to complete the upgrade process.

Affected Products

Secure Connect Gateway - Virtual Edition
Article Properties
Article Number: 000207578
Article Type: How To
Last Modified: 27 Jun 2025
Version:  5
Find answers to your questions from other Dell users
Support Services
Check if your device is covered by Support Services.