linux · cloud · container · macos · IBM Cloud

docker: monitor the execution of N containers

I had to monitor the execution of N containers that were collecting data from multiple accounts at IBM Cloud. Here, each container is simulation the process to collect the data, one container per account:

cloud · container · kubernetes · openshift · power · ppc64le · tekton

tekton: no endpoints available for service “tekton-pipelines-webhook

If you see an error like the above one during your Tekton deployment, you can use the steps provided here to fix it. Issue: Solution:

cloud · container · docker · github actions · linux · power · ppc64le · x86_64

CICD: building multi-arch container images with GitHub Actions

The world is multi-arch and you can easily leverage it!

linux · PostgreSQL

PostgreSQL: iterate over all tables and calculate the avg for a given column

linux · openstack · ppc64le

ppc64le: installing openstack CLI on RHEL 8.x

container · docker · linux

docker: delete containers running for a long time

If you need to delete running containers based on their lifetime, this handy combination of commands can help you. It deletes all containers running for more than 2 hours. HOUR=2docker ps –filter “status=running” | grep hours | awk ‘{if ($4 >=$HOUR) print $1,”must be deleted”; system(“docker rm -f ” $1)}’

linux · ppc64le · rhel

ppc64le: building a custom version of grub2

If you need to test a custom version of grub2 you can follow the steps bellow to build the necessary packages for RHEL8 (it should also work on CentOS and Fedora):

gitlab · linux · power · ppc64le

ppc64le: building GitLab Runner

To build GitLab Runner for ppc64le you can run the following steps in a x86_64 machine with Ubuntu 20.04:

IBM Cloud · linux · minicloud · PowerVS · ppc64le

ppc64le: creating a new CentOS8 .ova image for PowerVS

creating a new CentOS8 .ova image for PowerVS without a PowerVC 🙂


linux: pretty printing multi-path device name and size

As part of an automation I had to collect only the name and size of the multi-path devices attached to a given VM. Here is the result: multipath -ll | sed -n ‘/^mpath/,/^size/p’ >> /tmp/mpath.log && x=1 && while IFS=”” read -r p || [ -n “$p” ]; do STR1=$(printf ‘%s\n’ “$p” | sed ‘s/\s.*$//’);… Continue reading linux: pretty printing multi-path device name and size