.bashrc is a shell script that Bash runs when a user logs in. It contains a bunch of configurations for the terminal session (command aliases, coloring, completion and shell history).
Podman is a open source container engine developed by RedHat.
nano /home/YourUsernameHere/.bashrc
cosa() {
env | grep COREOS_ASSEMBLER
local -r COREOS_ASSEMBLER_CONTAINER_LATEST="quay.io/coreos-assembler/coreos-assembler:latest"
if [[ -z ${COREOS_ASSEMBLER_CONTAINER} ]] && $(podman image exists ${COREOS_ASSEMBLER_CONTAINER_LATEST}); then
local -r cosa_build_date_str="$(podman inspect -f "{{.Created}}" ${COREOS_ASSEMBLER_CONTAINER_LATEST} | awk '{print $1}')"
local -r cosa_build_date="$(date -d ${cosa_build_date_str} +%s)"
if [[ $(date +%s) -ge $((cosa_build_date + 60*60*24*7)) ]] ; then
echo -e "\e[0;33m----" >&2
echo "The COSA container image is more that a week old and likely outdated." >&2
echo "You should pull the latest version with:" >&2
echo "podman pull ${COREOS_ASSEMBLER_CONTAINER_LATEST}" >&2
echo -e "----\e[0m" >&2
sleep 10
fi
fi
set -x
podman run --rm -ti --security-opt label=disable --privileged \
--uidmap=1000:0:1 --uidmap=0:1:1000 --uidmap 1001:1001:64536 \
-v ${PWD}:/srv/ --device /dev/kvm --device /dev/fuse \
--tmpfs /tmp -v /var/tmp:/var/tmp --name cosa \
${COREOS_ASSEMBLER_CONFIG_GIT:+-v $COREOS_ASSEMBLER_CONFIG_GIT:/srv/src/config/:ro} \
${COREOS_ASSEMBLER_GIT:+-v $COREOS_ASSEMBLER_GIT/src/:/usr/lib/coreos-assembler/:ro} \
${COREOS_ASSEMBLER_CONTAINER_RUNTIME_ARGS:+-v $COREOS_ASSEMBLER_CONTAINER_RUNTIME_ARGS} \
${COREOS_ASSEMBLER_CONTAINER:-$COREOS_ASSEMBLER_CONTAINER_LATEST} "$@"
rc=$?; set +x; return $rc
}cosa is a containerized collection of tools. When we make a change to one of these tools, we can run a new container build to test our changes; however, a better (and faster) option is to mount the changed files into cosa.
We can edit our ~/.bashrc cosa alias. In the example below, we will mount kola binaries to test changes to kola:
export COREOS_ASSEMBLER_CONTAINER_RUNTIME_ARGS=/some/path/to/coreos-assembler/mantle/bin/:/usr/local/bin/:ro
Remember to substitute /some/path/to/coreos-assembler/mantle/bin/ for the path to the kola binaries on your machine. With he mantle/bin folder mounted
every time you run make to compile kola, the changes will be picked up in your cosa container.
Tip: I personally don't like to edit my ~/.bashrc file everytime. So I keep cosa bash scripts handy:
$ pwd
~/my-build-directory
$ cat cosa
cosa() {
env | grep COREOS_ASSEMBLER
local -r COREOS_ASSEMBLER_CONTAINER_LATEST="quay.io/coreos-assembler/coreos-assembler:latest"
if [[ -z ${COREOS_ASSEMBLER_CONTAINER} ]] && $(podman image exists ${COREOS_ASSEMBLER_CONTAINER_LATEST}); then
local -r cosa_build_date_str="$(podman inspect -f "{{.Created}}" ${COREOS_ASSEMBLER_CONTAINER_LATEST} | awk '{print $1}')"
local -r cosa_build_date="$(date -d ${cosa_build_date_str} +%s)"
if [[ $(date +%s) -ge $((cosa_build_date + 60*60*24*7)) ]] ; then
echo -e "\e[0;33m----" >&2
echo "The COSA container image is more that a week old and likely outdated." >&2
echo "You should pull the latest version with:" >&2
echo "podman pull ${COREOS_ASSEMBLER_CONTAINER_LATEST}" >&2
echo -e "----\e[0m" >&2
sleep 10
fi
fi
set -x
podman run --rm -ti --security-opt label=disable --privileged \
--uidmap=1000:0:1 --uidmap=0:1:1000 --uidmap 1001:1001:64536 \
-v ${PWD}:/srv/ --device /dev/kvm --device /dev/fuse \
--tmpfs /tmp -v /var/tmp:/var/tmp --name cosa \
${COREOS_ASSEMBLER_CONFIG_GIT:+-v $COREOS_ASSEMBLER_CONFIG_GIT:/srv/src/config/:ro} \
${COREOS_ASSEMBLER_GIT:+-v $COREOS_ASSEMBLER_GIT/src/:/usr/lib/coreos-assembler/:ro} \
${COREOS_ASSEMBLER_CONTAINER_RUNTIME_ARGS} \
${COREOS_ASSEMBLER_CONTAINER:-$COREOS_ASSEMBLER_CONTAINER_LATEST} "$@"
rc=$?; set +x; return $rc
}
export COREOS_ASSEMBLER_GIT=~/assembler/coreos-assembler/We can use different files to mount different common directories. In this one, we mount coreos-assembler/src into the COSA container.
https://coreos.github.io/coreos-assembler/building-fcos/
Error: error creating container storage: the container name "cosa" is already in use by "694975cfc9765382a8977337a8186b2f854dab171170e80be6ea484d44622e96". You have to remove that container to be able to reuse that name.: that name is already in use.
Make sure to always keep the container at the latest version to prevent errors using:
podman pull quay.io/coreos-assembler/coreos-assembler:latestpodman pull quay.io/coreos-assembler/coreos-assembler:latest
podman ps -a
podman stop nameofcontainerhere
Create a file in src/config/tests/kola. Create the file and make sure it has no extension. Use "chmod a=x testname" to add correct permissions.
You can also write a test that is compiled in Kola (ie. written in Go). In general opt for the first option (an external test) if possible, but if more complexity is needed, a test compiled in Kola is a good option.
https://coreos.github.io/coreos-assembler/kola/
First list all the kola tests using "cosa kola list". If you want to just get the name of your test you can use "cosa kola list | grep KeywordOfTest". Then you can run using "cosa kola run your.test.name.here".
Test results commonly held in a file inside /non-exclusive-test-bucket-0/ so use ls to get the folder inside it and the console.txt with the results.
E.g
ls tmp/kola/non-exclusive-test-bucket-0/
ls tmp/kola/non-exclusive-test-bucket-0/b525f4e2-93a9-47c5-your-folder-here/
cat tmp/kola/non-exclusive-test-bucket-0/b525f4e2-93a9-47c5-your-folder-here/console.txt
cat tmp/kola/non-exclusive-test-bucket-0/b525f4e2-93a9-47c5-your-folder-here/journal.txt
https://www.digitalocean.com/community/tutorials/bashrc-file-in-linux
https://coreos.github.io/coreos-assembler/kola/
https://unix.stackexchange.com/questions/129143/
what-is-the-purpose-of-bashrc-and-how-does-it-work