c4: Fixed "c4 fetch" trying to refetch the seed package

Detail name	Value
Changelog Number	20844
Type	Bug
Status	Resolved
Affected Versions	Exasol 8.28.0
Fix Versions	Exasol 8.28.2
Resolution Date	2024-06-03

Description

An attempt to update database not residing in AWS premises to version 8.28.0 was failing with an AWS-related error like

Error: src/cmd/commands/fetch.go:147: in fetch.(*Client).fetchMap: in x.(*PackagesRepository).Connect: in x.(*S3Client).Connect: operation error S3: HeadBucket, get identity: get credentials: failed to refresh cached credentials, no EC2 IMDS role found, operation error ec2imds: GetMetadata, exceeded maximum number of attempts, 3, request send failed, Get "http://169.254.169.254/latest/meta-data/iam/security-credentials/": dial tcp 169.254.169.254:80: connect: network is unreachable
ERROR: cannot fetch branchr-saas-9d0cc314-64r

or

Error: src/cmd/commands/fetch.go:147: in fetch.(*Client).fetchMap: in x.(*PackagesRepository).Connect: in x.(*S3Client).Connect: operation error S3: HeadBucket, get identity: get credentials: failed to refresh cached credentials, no EC2 IMDS role found, operation error ec2imds: GetMetadata, request canceled, context deadline exceeded
ERROR: cannot fetch branchr-saas-9d0cc314-64r

Workaround

There is no workaround.

Fix

Database update process doesn’t fail in this situation.