For any operation in Linux, we might facing the same issue Failed to allocate directory watch: Too many open files The default defined inotify instances (128) has been reached This happen a lot if we run Kubernetes cluster. 128 is the default number for various Linux distro, for heavy user we need to adjust this … Read more
After upgrade to the nginx 1.26 on Debian 12, sudo nginx -t throw some warning issue in the nginx config $ sudo nginx -t nginx: [warn] the "listen … http2" directive is deprecated, use the "http2" directive instead in /etc/nginx/sites-enable/atetux.conf:7 for now that not a issue, just a warning. But it’s better to fix it … Read more
Many of the Kubernetes cluster and Docker on production, have a policy to run on read-only system for all the directory except certain explicit folder that customizable by user. In read-only file system, not all of the application can run smooth by default, but trivial to fix as well. For this tutorial lets take pip … Read more
kcadm.sh is the admin CLI for Keycloak, we can do most of the operation using this script. Download the Keycloak file, kcadm.sh are inside that file. wget https://github.com/keycloak/keycloak/releases/download/24.0.1/keycloak-24.0.1.tar.gz extract the keycloak-24.0.1.tar.gz tar zxvf keycloak-24.0.1.tar.gz Move to the folder bin cd keycloak-24.0.1/bin run the kcadm.sh Optional: Run Keycloak on Docker If you didn’t have a Keycloak … Read more
Superset is a powerfull analytic web-based tools, that had support many databases, it’s good for data exploration and visualization. In this tutorial we’ll start from scratch to install Keycloak and Superset Superset version 3.1.1 Keycloak version 24.0.1 The configuration should work for any environment, docker, kubernetes or VPS. But keep in mind on the PATH … Read more
Vault is one of the most used secret solution in the Kubernetes, it’s used by big player. Vault is application that store, and tightly control access to tokens, passwords, certificates, encryption keys for protecting secrets, and other sensitive data using a UI, CLI, or HTTP API. We can use Vault for different use case, but … Read more
Kubernetes Dashboard it’s really helpfull for sharing the URL with team mate or anyone, because by share the URL we can see the same thing. We don’t need to ask people to open their terminal and poking around looking for logs. prerequisite: – Kubernetes cluster – helm – kubectl Create a namespace monitoring for a … Read more
Fluentbit is created as a fluentd successor for cloud native, which use less memory and faster to process the logs. To make is easy managing fluentbit in Kubernetes, like update the config, reload the pod, etc we’ll use fluent-operator. Let’s setup the fluent-operator from scratch. Deploy fluent-operator and fluentbit To deploy fluent-operator and fluent bit, … Read more
Many companies with dedicated security team, requires the UID user used by docker images greater than 1000 to avoid conflict with host id. By default, Linux will assign 1000 UID for the first non-root non-system user account. For docker images that use ENTRYPOINT we need to use the command # command is command line that … Read more
In this tutorial, we’ll learn how to install the latest version of WordPress using Rocky Linux 9. Before doing this tutorial, you’ll need a domain name and Linux server with Rocky Linux 9 installed. It’ll take maximum 30 minutes to finish this tutorial, so stay tuned and take the necessary food and drink to accompany … Read more