We have a Jenkins instance with a bunch of jobs. After a while – a new warning appeared: Jenkins: your Jenkins data directory /var/lib/jenkins (aka JENKINS_HOME) is almost full Checked disk usage with the ncdu and found few jobs which used really lot of space: [simterm] root@jenkins-production:/data/jenkins# du -h –max-depth 1 jobs/ .. 25G jobs/APITests …… Read More »
Minikube – a utility to run a Kubernetes cluster locally on your PC. It can use Virtualbox, VMware, Hyper-V etc hypervisors which will be used to create a virtual machine with a Kubernetes cluster. Minikube is a great tool for developers or DevOps engineers to test deployments/services etc without the need to create and configure… Read More »
We have three working environments – Dev, Stage, Production. Also, there are a bunch of alerts with different severities – info, warning и critical. For example: … – name: SSLexpiry.rules rules: – alert: SSLCertExpiring30days expr: probe_ssl_earliest_cert_expiry{job=”blackbox”} – time() < 86400 * 30 for: 10m labels: severity: info annotations: summary: “SSL certificate warning” description: “SSL certificate… Read More »
In addition to the Prometheus: Alertmanager’s alerts receivers and routing based on severity level and tags post. Have an Alertmanager config with routes. The task is – send all alerts from a Dev-environment into a “/dev/null”. To do this – create an empty receiver: … receivers: – name: ‘blackhole’ – name: ‘default’ slack_configs: – send_resolved:… Read More »
The main goal when I was buying a new PC with NVIDIA GeForce GTX 1050 Ti was an ability to play games on Arch Linux without reboots into Windows. For this need to install NVIDIA drivers so Linux will use it instead of nouveau (although I didn’t even try to run any game with nouveau).… Read More »
chroot() was added to the Version 7 Unix in 1979 and used for filesystem isolation. In fact, it’s the predecessor of the whole current containerization idea, just now there are namespaces and cgroups are used while earlier chroot was used to create an environment which is isolated from a host and can be used for… Read More »
TestRail – Test Case Management Software for QA and Development Teams. Well – that’s all needed as a description) Below – its installation on Debian Linux with NGINX, Let’s Encrypt, PHP-FPM, MariaDB, and Exim. Project’s homepage – www.gurock.com/testrail Installation official documentation – here>>>. Setup will be on an AWS EC2. LEMP and SSL Login to… Read More »
The task is to save to a log file all requests excluding ones with the 200 response from the NGINX. Using such an approach with the map – you can do various things, for example – chose a location to be used based on a header value. Will add such an example later. For now,… Read More »
AWS CLI supports so-called named profiles stored in the configuration file .aws/config and ~/.aws/credentials file with keys which by default contains the… Well – the “default” profile. An additional profile can be added using the aws configure command with the –profile option. Here is an example of such file with already existing two profiles: [simterm]… Read More »
We have jobs which have to be executed on a Dev and Production environments via a Scripted Pipeline. In such jobs, there are tasks to execute CloudFormation upgrades on an infrastructure or Ansible playbooks to update servers configuration. To avoid an accidental execution of a Production job I want to have some confirmation step before… Read More »