AWX default execution environment is pretty strong but in some cases it is not enough. There days I wanted to run a play which require json_query for filtering out some outputs. All went well during tests from localhost so when I’ve wanted to run it using AWX I’ve got a super nice error: Well this was the time when I saw a miss in default AWX EE and something challenged me to fix it. First...
Read moreOne of our clients requested us a solution to monitor temperature in their datacenters with one condition, this should send data to a Zabbix server without cloud or any other integrations directly using a WIFI network. Once we had received request we searched for some available solutions but none oh them was satisfying us. This was the moment when we decided to use a ESP32 board with a soldered temperature sensor, in short words building...
Read moreLogstash is a free and open server-side data processing pipeline that ingests data from a multitude of sources, transforms it, and then sends it to your favorite “stash.” In out case we are sending logs to Elasticsearch which our preferred solution to store real-time logs due to the fact that it is very fast to store and read from it. In Elasticsearch payed version there is a option to send email alerts when a log...
Read moreNVIDIA DGX™ A100 is the universal system for all AI workloads, offering unprecedented compute density, performance, and flexibility in the world’s first 5 petaFLOPS AI system. Featuring the NVIDIA A100 Tensor Core GPU, DGX A100 enables enterprises to consolidate training, inference, and analytics into a unified, easy-to-deploy AI infrastructure that includes direct access to NVIDIA AI experts. Since installation there might be Cuda upgrades. In order to proceed with Cuda upgrade we will need to execute Read more…
Sometimes you may have issues when upload ISO/OVA to vCloud. Issues might be not to move file to transfer NFS or not to move from transfer NFS to vCloud cluster. For faster troubleshot if you see in progress bar upload stuck at 50% this means file was successfully uploaded to transfer NFS but might be a issue between NFS transfer server and vCloud cluster. If you need to check status for upload you may use Read more…
By default SNMP agent is disabled on all ECS nodes for public access. If we need to monitor our ECS servers using SNMP we will need to make some small config changes to enable it. First of all we will need to edit file /etc/snmp/snmpd.conf and add there the following line right after lines starting with com2sec: Adding this line will enable SNMP agent with TCP and UDP protocols on the node SNMP agents. After making Read more…
Today we will talk about little different type of content than usual one. We will have some fun with ESP boards and a relay connected. Steps to control a relay with ESP32/ESP8266: We will configure ESP to connect to WIFI, bring up a basic webserver and then create a route to toggle our relay and get relay status so sketch is the following one: Looking to integrate IoT devices into centralized monitoring or automation?→ Check Read more…
Today we will talk about option to add any NFS storage to your existing Kubernetes cluster. We will need some minimum requirements like Kubernetes version newer than 1.18 and a running server to act as NFS server. We will not talk today about configuring NFS in HA mode. As Linux distro we will use today Ubuntu but can be used others. Steps to add NFS storage in Kubernetes: Install and configure NFS server Installing a Read more…
Amavis is an open-source content filter solution for electronic mail. It implement mail message transfer, decoding, processing, checking and interfacing with external content filters to provide protection against spam, viruses and other malware. It may be considered an middleware between a mailer (MTA) and one or more content filters. In some cases amavis mai block emails due to False negative checking. In this cases we will need to manually deliver emails to receivers. Let’s take Read more…
VMware vCenter Server is an server management solution which provides a centralised platform for controlling vSphere environments. Snapshots can be used for development and testing purposes. It can be considered as a quick failsafe to be able to rollback before a patch performing tests on certain applications residing on VM. The major issue is when someone create a snapshot, do the fun and then let the snapshot there. Issue is generated by the fact that that Read more…