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Arseny Zinchenko profile picture

Arseny Zinchenko

DevOps, cloud and infrastructure engineer. Love Linux, OpenSource, and AWS.

Location Kiev, Ukraine Joined Joined on  Twitter logo GitHub logo LinkedIn logo External link icon
Linux: LEMP set up — NGINX, PHP, MySQL, SSL, monitoring, logs, and a WordPress blog migration

Linux: LEMP set up — NGINX, PHP, MySQL, SSL, monitoring, logs, and a WordPress blog migration

Reactions 6
29 min read
Jenkins: Redis deployment, and Helm subchart values

Jenkins: Redis deployment, and Helm subchart values

Reactions 5
7 min read
Kubernetes: Service, load balancing, kube-proxy, and iptables

Kubernetes: Service, load balancing, kube-proxy, and iptables

Reactions 7
10 min read
Kubernetes: running SQL migrations with Kubernetes Job and Helm hook

Kubernetes: running SQL migrations with Kubernetes Job and Helm hook

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11 min read
Helm: reusable chart — named templates, and a generic chart for multiple applications

Helm: reusable chart — named templates, and a generic chart for multiple applications

Reactions 6
17 min read
Kubernetes: Evicted pods and pods Quality of Service

Kubernetes: Evicted pods and pods Quality of Service

Reactions 2
5 min read
Redis: running Master-Slave replication in Kubernetes

Redis: running Master-Slave replication in Kubernetes

Reactions 7 Comments 1
6 min read
Kubernetes: load-testing and high-load tuning — problems and solutions

Kubernetes: load-testing and high-load tuning — problems and solutions

Reactions 11 Comments 1
36 min read
Kubernetes: a cluster’s monitoring with the Prometheus Operator

Kubernetes: a cluster’s monitoring with the Prometheus Operator

Reactions 7 Comments 1
13 min read
Kubernetes: HorizontalPodAutoscaler — an overview with examples

Kubernetes: HorizontalPodAutoscaler — an overview with examples

Reactions 7
19 min read
Neo4j: running in Kubernetes

Neo4j: running in Kubernetes

Reactions 5
3 min read
Kubernetes: PersistentVolume and PersistentVolumeClaim — an overview with examples

Kubernetes: PersistentVolume and PersistentVolumeClaim — an overview with examples

Reactions 5
12 min read
Neo4j: graph database — run with Docker and Cypher QL examples

Neo4j: graph database — run with Docker and Cypher QL examples

Reactions 7
7 min read
Prometheus: yet-another-cloudwatch-exporter – collecting AWS CloudWatch metrics

Prometheus: yet-another-cloudwatch-exporter – collecting AWS CloudWatch metrics

Reactions 7
6 min read
Kubernetes: ClusterIP vs NodePort vs LoadBalancer, Services, and Ingress — an overview with…

Kubernetes: ClusterIP vs NodePort vs LoadBalancer, Services, and Ingress — an overview with…

Reactions 6
11 min read
Docker: configure tzdata and timezone during build

Docker: configure tzdata and timezone during build

Reactions 11 Comments 1
2 min read
AWS: CloudFormation  - using Conditions, Fn::Equals, and Fn::If -  an example

AWS: CloudFormation  - using Conditions, Fn::Equals, and Fn::If -  an example

Reactions 4
4 min read
Helm: helm-secrets — sensitive data encryption with AWS KMS and use it from Jenkins

Helm: helm-secrets — sensitive data encryption with AWS KMS and use it from Jenkins

Reactions 6
12 min read
Jira: filters and email notifications about tickets

Jira: filters and email notifications about tickets

Reactions 6
3 min read
AWS: CloudFormation – using lists in Parameters

AWS: CloudFormation – using lists in Parameters

Reactions 6
4 min read
Helm: Kubernetes package manager — an overview, getting started

Helm: Kubernetes package manager — an overview, getting started

Reactions 9
9 min read
AWS Elastic Kubernetes Service: a cluster creation automation, part 2 — Ansible, eksctl

AWS Elastic Kubernetes Service: a cluster creation automation, part 2 — Ansible, eksctl

Reactions 6
23 min read
Linux: no sound after suspend/sleep – the solution

Linux: no sound after suspend/sleep – the solution

Reactions 5
3 min read
Kubernetes: monitoring with Prometheus – exporters, a Service Discovery, and its roles

Kubernetes: monitoring with Prometheus – exporters, a Service Discovery, and its roles

Reactions 6
21 min read
AWS Elastic Kubernetes Service: a cluster creation automation, part 1 – CloudFormation

AWS Elastic Kubernetes Service: a cluster creation automation, part 1 – CloudFormation

Reactions 5
22 min read
Google Drive: using via terminal on Linux Debian 9 with insync-headless

Google Drive: using via terminal on Linux Debian 9 with insync-headless

Reactions 6
3 min read
AWS Elastic Kubernetes Service: running ALB Ingress controller

AWS Elastic Kubernetes Service: running ALB Ingress controller

Reactions 7
9 min read
Kubernetes: part 5 — RBAC authorization with a Role and RoleBinding example

Kubernetes: part 5 — RBAC authorization with a Role and RoleBinding example

Reactions 10 Comments 1
8 min read
Linux: processes core dumps, systemd-coredump and Debian

Linux: processes core dumps, systemd-coredump and Debian

Reactions 7
8 min read
AWS: CloudFormation – Nested Stacks and stacks parameters Import/Export

AWS: CloudFormation – Nested Stacks and stacks parameters Import/Export

Reactions 6
12 min read
Linux: gnome-keyring setup as Freedesktop SecretService

Linux: gnome-keyring setup as Freedesktop SecretService

Reactions 8
5 min read
Redis: “psync scheduled to be closed ASAP for overcoming of output buffer limits” and the client-output-buffer-limit

Redis: “psync scheduled to be closed ASAP for overcoming of output buffer limits” and the client-output-buffer-limit

Reactions 7 Comments 1
12 min read
Linux: PHP-FPM, Docker, STDOUT and STDERR – no an application’s error logs

Linux: PHP-FPM, Docker, STDOUT and STDERR – no an application’s error logs

Reactions 6
9 min read
PHP: PHP-FPM ignores environment variables – solutions

PHP: PHP-FPM ignores environment variables – solutions

Reactions 6
3 min read
Kubernetes: running metrics-server in AWS EKS for a Kubernetes Pod AutoScaler

Kubernetes: running metrics-server in AWS EKS for a Kubernetes Pod AutoScaler

Reactions 9
8 min read
Kubernetes: ConfigMaps and Secrets on a Gorush server example

Kubernetes: ConfigMaps and Secrets on a Gorush server example

Reactions 5
6 min read
Kubernetes: ConfigMap and Secrets – data auto-reload in pods

Kubernetes: ConfigMap and Secrets – data auto-reload in pods

Reactions 7
3 min read
Kubernetes: running a push-server with Gorush behind an AWS LoadBalancer

Kubernetes: running a push-server with Gorush behind an AWS LoadBalancer

Reactions 10
5 min read
Calibre Web: home in-browser online-library with Nextcloud storage and Moon+ Reader on Android

Calibre Web: home in-browser online-library with Nextcloud storage and Moon+ Reader on Android

Reactions 11
8 min read
Bitwarden: shared MFA TOTP codes for Gmail accounts

Bitwarden: shared MFA TOTP codes for Gmail accounts

Reactions 4
3 min read
KeePass: SSH keys passwords storage and decryption on Linux

KeePass: SSH keys passwords storage and decryption on Linux

Reactions 16
4 min read
KeePass: an MFA TOTP codes, a browser’s passwords, SSH keys passwords storage configuration and Secret Service integration

KeePass: an MFA TOTP codes, a browser’s passwords, SSH keys passwords storage configuration and Secret Service integration

Reactions 10
14 min read
Chromium: Linux, keyrings && Secret Service, passwords encryption and store

Chromium: Linux, keyrings && Secret Service, passwords encryption and store

Reactions 7
8 min read
What is: Linux keyring, gnome-keyring, Secret Service, and D-Bus

What is: Linux keyring, gnome-keyring, Secret Service, and D-Bus

Reactions 17 Comments 1
22 min read
SSH: RSA keys, and ssh-agent for SSH keys and their passwords management

SSH: RSA keys, and ssh-agent for SSH keys and their passwords management

Reactions 40
10 min read
Linux: the Nextcloud client, qtkeychain and the “The name org.freedesktop.secrets was not provided by any .service files” error

Linux: the Nextcloud client, qtkeychain and the “The name org.freedesktop.secrets was not provided by any .service files” error

Reactions 5
7 min read
Nextcloud: running in Docker Compose on Debian with Let’s Encrypt SSL

Nextcloud: running in Docker Compose on Debian with Let’s Encrypt SSL

Reactions 10
14 min read
Arch Linux: key could not be imported – required key missing from keyring

Arch Linux: key could not be imported – required key missing from keyring

Reactions 6
5 min read
HTTP: redirects, POST and GET requests, and the "lost data"

HTTP: redirects, POST and GET requests, and the "lost data"

Reactions 19
12 min read
AWS: RDS Certificate Authority SSL certificate upgrade

AWS: RDS Certificate Authority SSL certificate upgrade

Reactions 8
4 min read
Linux: Kazam – record a screencast

Linux: Kazam – record a screencast

Reactions 4
2 min read
Grafana: Loki – the LogQL’s Prometheus-like counters, aggregation functions, and dnsmasq’s requests graphs

Grafana: Loki – the LogQL’s Prometheus-like counters, aggregation functions, and dnsmasq’s requests graphs

Reactions 12
15 min read
What is: SAML – an overview, its structure, and requests tracing between a Jenkins and Okta SSO

What is: SAML – an overview, its structure, and requests tracing between a Jenkins and Okta SSO

Reactions 22
16 min read
dnsmasq: AWS – “Temporary failure in name resolution”, logs, debug and dnsmasq cache size

dnsmasq: AWS – “Temporary failure in name resolution”, logs, debug and dnsmasq cache size

Reactions 6
9 min read
Arch Linux: package-query: error while loading shared libraries: libalpm.so.11

Arch Linux: package-query: error while loading shared libraries: libalpm.so.11

Reactions 6 Comments 2
3 min read
Okta: G-Suite integration – provisioning and users import and export

Okta: G-Suite integration – provisioning and users import and export

Reactions 5
7 min read
Github: SAML, Okta, and Github Enterprise Cloud – Organization SSO configuration

Github: SAML, Okta, and Github Enterprise Cloud – Organization SSO configuration

Reactions 4
5 min read
AWS: Redshift – quick start and SQL-workbench connection configuration

AWS: Redshift – quick start and SQL-workbench connection configuration

Reactions 12
4 min read
Jenkins: SAML, Okta, user groups, and Role-Based Security plugin

Jenkins: SAML, Okta, user groups, and Role-Based Security plugin

Reactions 5 Comments 1
5 min read
OpenVPN: the No route to host and ERR_ADDRESS_UNREACHABLE errors – the cause and a solution

OpenVPN: the No route to host and ERR_ADDRESS_UNREACHABLE errors – the cause and a solution

Reactions 6
3 min read
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