In our project, my co-worker told me that the dockerd process consume very high cpu usage, it can be 90% or more sometimes. It causes the machine slow and can not process our business well. …

We have a platform, named Asteria. User can upload the tar.gz image file in browser, asteria will store the image file to minio, and using ctr cli to import the image. At the first sight, I coded it step by step as following: // put the object to minio through…

When we want to execute shell command in Nodejs, we can using exec or spawn method from child_process module, and it works often. However, when we have some special char in our command, such as () or spaces will cause error. …

When a node has multiple nvidia gpu cards in a kubernetes cluster, how can we using different gpu card for different pod to get better performance and isolation for gpu work. Nvidia Container Runtime Nvidia has published nvidia-docker to simplify the nvidia gpu job in docker. …

Systemd Authorize shell script The Bash script content, you can do any thing you want here. #!/bin/bash # in /home/admin/start.sh set -e ps aux | grep test| grep -v grep | awk '{print $2}' | xargs kill -9 || true mkdir -p /home/admin/logs java -jar /home/admin/test.jar \ -Xms5334m -Xmx5334m -Xmn2000m -XX:MetaspaceSize=256m \ -XX:MaxMetaspaceSize=256m -XX:MaxDirectMemorySize=1g \…

When we want to change our node ip of the k3s cluster, what we gone do to achieve it. It depends on the datastore that the k3s using. ETCD when k3s using etcd as datastore, we should reinit the cluster to get the new ip. Stop the k3s service systemctl stop…

You probably know that reading from RAM is a lot of faster than reading files from the hard drive, and reduces your disk I/O. This article shows how you can store files and directories in memory instead of on the hard drive with the help of tmpfs (a file system…

I have an open source module, the codes are host on Github. When I have new release, I want to publish it to npm registry and Github package registry at the same time. The main difference between two registry: the name field in package.json …

When you open Github profile of someone, maybe you can see a snake game to your contribution graph.