AWS VPC Flow Logs allow you to log traffic information between network interfaces in a VPC. Further, these logs can be stored in AWS S3 or sent to AWS CloudWatch Logs, while enabling traffic logging does not affect the performance of the network interface in any way. Let’s briefly review the basic concepts, and… Read More »
During system upgrade with pacman -Syu, I got internet disruption, and on the next upgrade I got the error from pacman. It sounds like “HTTP server doesn’t seem to support byte ranges. Cannot resume“: [simterm] … ==> Retrieving sources… -> Downloading clightd-5.6.tar.gz… ** Resuming transfer from byte position 12288 % Total % Received % Xferd… Read More »
Among other features provided by Cloudflare, it can add a special header with a country value, from where a visitor came. As a Ukrainian, I’d like to ban all visitors from russia, but: redirect all visitors from russian IPs to another web domain – russki-voenny-korabl-idi-nahuy.com during this, I’d like to filter requests and leave requests… Read More »
The rtfm.co.ua blog is quite slow for users. For example, you can test your website using the https://gtmetrix.com: 4.3 seconds till full load! That’s awful. At the bottom of the results, you can check top of issues on a site: At first, the page size is 1.16 MB, which is big enough. The second thing… Read More »
During an SSH connection, I started getting the “Too many authentication failures” error message from a remote host. The error, and its cause Actually, the root cause is simple: during establishing a new SSH connection, the local ssh-client first tries to use keys, that are loaded by the local ssh-agent, and only after that will… Read More »
The last time I’ve worked with the ELK stack about 7 years ago, see the ELK: установка Elasticsearch+Logstash+Kibana на CentOS. Currently, we are using Logz.io, but its costs going higher and higher, so we started looking at the self-hosted ELK solution to be running on our AWS Elastic Kubernetes Service clusters. So, the task, for… Read More »