Mateusz Suski
52 lines
1.6 KiB
Markdown
52 lines
1.6 KiB
Markdown
# Linux Operations Bash Toolkit
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Small, practical Bash scripts for Linux operations checks and incident triage. The scripts are sanitized examples inspired by production Linux operations work and avoid destructive actions or root-only assumptions.
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## Scripts
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- `healthcheck.sh` - general host health overview.
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- `disk_check.sh` - filesystem usage threshold check.
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- `service_check.sh` - critical service status check.
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- `system_report.sh` - writes a timestamped system report to `/tmp`.
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- `network_troubleshoot.sh` - local and optional remote network diagnostics.
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## Usage
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```bash
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./healthcheck.sh
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./disk_check.sh
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./disk_check.sh 90
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./service_check.sh
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./service_check.sh sshd nginx zabbix-agent
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./system_report.sh
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./network_troubleshoot.sh
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./network_troubleshoot.sh google.com
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```
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## Exit Codes
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`disk_check.sh`:
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- `0` - all filesystems are below the threshold.
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- `1` - one or more filesystems are at or above the threshold.
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- `2` - invalid threshold input.
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`service_check.sh`:
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- `0` - all checked services are active.
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- `1` - at least one service is inactive, failed, missing, or cannot be checked.
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`network_troubleshoot.sh`:
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- `0` - no obvious local, DNS, or connectivity issue detected.
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- `1` - DNS, interface, gateway, or target connectivity problems detected.
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`healthcheck.sh` and `system_report.sh` are informational. They print warnings for missing tools where possible.
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## Notes
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- Requires Bash.
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- Designed for RHEL, Oracle Linux, and Ubuntu style systems.
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- Handles missing tools such as `ss`, `traceroute`, `nc`, and `journalctl` gracefully.
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- Does not require root and does not make system changes.
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