# DevOps & Deployment Tools

> Docker, Nginx, Kubernetes and systemd config generators, chmod, cron, .gitignore, SSH keys, htpasswd and open-source licenses.

- URL: https://qilingtools.com/en/tags/devops
- Price: Free, no sign-up
- Privacy: Runs locally in the browser; files are never uploaded

## Tools (17)

- [Cron Expression](https://qilingtools.com/en/cron): Free online cron tool: parse a 5-field cron (min hour dom mon dow), break down each field and predict the next 5 run times in your local zone. Computed locally.
- [Chmod Calculator](https://qilingtools.com/en/chmod): Free online chmod calculator: tick read, write and execute for owner, group and others to convert octal (755) and symbolic (rwxr-xr-x), with setuid and sticky.
- [Subnet Calculator](https://qilingtools.com/en/cidr): Free online IPv4 subnet calculator: enter 192.168.1.10/24 for the network, broadcast, host range and count, wildcard mask, binary view and a prefix table.
- [.gitignore Generator](https://qilingtools.com/en/gitignore): Free .gitignore generator: combine 40 templates (Node, Python, Java, Go, Rust, Unity, macOS, VS Code…), dedupe, add custom rules, test which paths git ignores.
- [docker run ↔ Compose Converter](https://qilingtools.com/en/docker-convert): Convert docker run to docker-compose.yml and back: ports, volumes, env, networks, healthchecks, limits, logging and GPUs, plus warnings for unsupported flags.
- [Nginx Config Generator](https://qilingtools.com/en/nginx-config): Generate Nginx configs for static sites, SPAs, reverse proxies, WebSocket and PHP-FPM with HTTPS, HTTP/2, gzip, caching, security headers and rate limits.
- [Semver Tools](https://qilingtools.com/en/semver): Semver tools: validate SemVer 2.0.0, compare and sort versions, bump like npm version, and test npm ranges (^, ~, x-ranges, ||) with plain explanations.
- [Config File Converter](https://qilingtools.com/en/config-convert): Convert config files between JSON, YAML, TOML, INI, .env and Java .properties. Auto-detects the format, full TOML 1.0 support, errors with line numbers.
- [Htpasswd Generator](https://qilingtools.com/en/htpasswd): Generate .htpasswd entries with bcrypt, APR1-MD5, SHA-512/256 crypt or {SHA}, merge into existing files, verify passwords and get nginx / .htaccess config.
- [IPv6 Calculator](https://qilingtools.com/en/ipv6): Free IPv6 toolkit: RFC 5952 compress/expand, prefix ranges, paged subnetting, address types (Teredo, 6to4, NAT64), EUI-64, ip6.arpa and random ULA.
- [Kubernetes YAML Generator](https://qilingtools.com/en/k8s-yaml): Generate Kubernetes manifests: Deployment/StatefulSet, Service, Ingress, ConfigMap, Secret, HPA, PVC and CronJob, with validation and docker run/compose import.
- [Open Source License Picker](https://qilingtools.com/en/license-picker): Answer a few questions to choose an open source license, compare 15 licenses side by side, and generate a filled-in LICENSE, SPDX headers and manifest fields.
- [SSH Key Generator](https://qilingtools.com/en/ssh-keygen): Generate SSH key pairs in your browser: Ed25519, RSA 2048/3072/4096 or ECDSA, with OpenSSH keys, passphrases, PKCS#8, fingerprints and randomart.
- [systemd Unit Generator](https://qilingtools.com/en/systemd-unit): Generate systemd .service and .timer files with restart, dependencies and hardening explained; convert cron to OnCalendar, preview next runs, lint units.
- [Git commands](https://qilingtools.com/en/git-commands): Free Git cheat sheet: 60+ commands grouped by what you want to do — undo, branch, rebase, remotes, history, stash, cleanup — with copy and danger warnings.
- [Commit message](https://qilingtools.com/en/commit-message): Free Conventional Commits generator: pick a type, fill in the summary and get a correct header, BREAKING CHANGE footer and a ready-to-paste git commit command.
- [.editorconfig](https://qilingtools.com/en/editorconfig): Free .editorconfig generator: choose indentation, line endings, charset and trailing-space rules, start from a project preset, and get the exceptions added.