Spark Kubernetees building docker image fails - docker

Question

I'm trying out Spark on Kubernetes. Just downloaded Spark 2.4.3 on an EC2 instance in my VPC. I have setup my proxy in /etc/sysconfig/docker and able to import and run docker images from docker hub.
Command: bin/docker-image-tool.sh -t k8s-spark-2.4.3 build
Sending build context to Docker daemon 261.4MB
Step 1/15 : FROM openjdk:8-alpine
---> a3562aa0b991
Step 2/15 : ARG spark_jars=jars
---> Using cache
---> 2f9744e85911
Step 3/15 : ARG img_path=kubernetes/dockerfiles
---> Using cache
---> ba02760dc2df
Step 4/15 : ARG k8s_tests=kubernetes/tests
---> Using cache
---> a630900ca584
Step 5/15 : RUN set -ex && apk upgrade --no-cache && apk add --no-cache bash tini libc6-compat linux-pam nss && mkdir -p /opt/spark && mkdir -p /opt/spark/work-dir && touch /opt/spark/RELEASE && rm /bin/sh && ln -sv /bin/bash /bin/sh && echo "auth required pam_wheel.so use_uid" >> /etc/pam.d/su && chgrp root /etc/passwd && chmod ug+rw /etc/passwd
---> Running in 6b2fe7f7fcc6
+ apk upgrade --no-cache
fetch http://dl-cdn.alpinelinux.org/alpine/v3.9/main/x86_64/APKINDEX.tar.gz
WARNING: Ignoring http://dl-cdn.alpinelinux.org/alpine/v3.9/main/x86_64/APKINDEX.tar.gz: network error (check Internet connection and firewall)
fetch http://dl-cdn.alpinelinux.org/alpine/v3.9/community/x86_64/APKINDEX.tar.gz
WARNING: Ignoring http://dl-cdn.alpinelinux.org/alpine/v3.9/community/x86_64/APKINDEX.tar.gz: network error (check Internet connection and firewall)
+ apk add --no-cache bash tini libc6-compat linux-pam nss
OK: 103 MiB in 54 packages
fetch http://dl-cdn.alpinelinux.org/alpine/v3.9/main/x86_64/APKINDEX.tar.gz
WARNING: Ignoring http://dl-cdn.alpinelinux.org/alpine/v3.9/main/x86_64/APKINDEX.tar.gz: network error (check Internet connec tion and firewall)
fetch http://dl-cdn.alpinelinux.org/alpine/v3.9/community/x86_64/APKINDEX.tar.gz
WARNING: Ignoring http://dl-cdn.alpinelinux.org/alpine/v3.9/community/x86_64/APKINDEX.tar.gz: network error (check Internet connection and firewall)
bash (missing):
required by: world[bash]
libc6-compat (missing):
required by: world[libc6-compat]
linux-pam (missing):
required by: world[linux-pam]
tini (missing):
required by: world[tini]
ERROR: unsatisfiable constraints:
The command '/bin/sh -c set -ex && apk upgrade --no-cache && apk add --no-cache bash tini libc6-compat linux-pam nss && mkdir -p /opt/spark && mkdir -p /opt/spark/work-dir && touch /opt/spark/RELEASE && rm /bin/sh && ln -sv /bin/bash /bin/sh && echo "auth required pam_wheel.so use_uid" >> /etc/pam.d/su && chgrp root /etc/passwd && chmod ug+rw /etc/passwd' returned a non-zero code: 4
Sending build context to Docker daemon 261.4MB
Step 1/9 : ARG base_img
Step 2/9 : FROM $base_img
pull access denied for spark, repository does not exist or may require 'docker login'
Sending build context to Docker daemon 261.4MB
Step 1/9 : ARG base_img
Step 2/9 : FROM $base_img
pull access denied for spark, repository does not exist or may require 'docker login'
Any idea how to fix this?
I tried running this after 'docker login' as well. Result is same.

Answer 1

Seems like your EC2 instance has no conection with internet
WARNING: Ignoring http://dl-cdn.alpinelinux.org/alpine/v3.9/main/x86_64/APKINDEX.tar.gz:
network error (check Internet connection and firewall)

Answer 2

I had this exact same problem from within an Ubuntu 16.04 VM running on my laptop.
I was able to download the packages with curl and to visit the alpine repository directories using a web browser, so I know the issue was not the network connection.
Believe it or not, the solution was to restart the docker service running within the VM.
I found this as a suggested solution when searching for one of the apline package loading errors and it worked!