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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,172 @@ | ||
| #!/usr/bin/env python3 | ||
|
|
||
| """ | ||
| Description: Expose metrics from needrestart. | ||
| This script runs needrestart in batch mode. It will never ask for input | ||
| and will never restart or upgrade anything. | ||
| Dependencies: python >= 3.5, python3-prometheus-client, needrestart | ||
| Authors: RomainMou | ||
| """ | ||
|
|
||
| import sys | ||
| import time | ||
| import subprocess | ||
| from collections import Counter | ||
| from enum import Enum | ||
|
|
||
| from prometheus_client import ( | ||
| CollectorRegistry, | ||
| Gauge, | ||
| generate_latest, | ||
| ) | ||
|
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||
|
|
||
| class KernelStatus(Enum): | ||
| UNKNOWN = 0 | ||
| CURRENT = 1 | ||
| ABI_UPGRADE = 2 | ||
| VERSION_UPGRADE = 3 | ||
|
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||
|
|
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| class MicroCodeStatus(Enum): | ||
| UNKNOWN = 0 | ||
| CURRENT = 1 | ||
| OBSOLETE = 2 | ||
|
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||
|
|
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| class NeedRestartData: | ||
| def __init__(self, needrestart_output): | ||
| # Some default value | ||
| self.timestamp = int(time.time()) | ||
| self.version = None | ||
| self.kernel_status = None | ||
| self.microcode_status = None | ||
| self.kernel_current_version = "" | ||
| self.kernel_expected_version = "" | ||
| self.microcode_current_version = "" | ||
| self.microcode_expected_version = "" | ||
| needrestart_counter = Counter() | ||
|
|
||
| # Parse the cmd output | ||
| for line in needrestart_output.splitlines(): | ||
| key, value = line.split(": ", maxsplit=1) | ||
| if key == "NEEDRESTART-VER": | ||
| self.version = value | ||
| # Kernel informations | ||
| elif key == "NEEDRESTART-KCUR": | ||
| self.kernel_current_version = value | ||
| elif key == "NEEDRESTART-KEXP": | ||
| self.kernel_expected_version = value | ||
| elif key == "NEEDRESTART-KSTA": | ||
| self.kernel_status = KernelStatus(int(value)) | ||
| # Microcode informations | ||
| elif key == "NEEDRESTART-UCCUR": | ||
| self.microcode_current_version = value | ||
| elif key == "NEEDRESTART-UCEXP": | ||
| self.microcode_expected_version = value | ||
| elif key == "NEEDRESTART-UCSTA": | ||
| self.microcode_status = MicroCodeStatus(int(value)) | ||
| # Count the others | ||
| else: | ||
| needrestart_counter.update({key}) | ||
|
|
||
| self.services_count = needrestart_counter["NEEDRESTART-SVC"] | ||
| self.containers_count = needrestart_counter["NEEDRESTART-CONT"] | ||
| self.sessions_count = needrestart_counter["NEEDRESTART-SESS"] | ||
|
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||
|
|
||
| def write_timestamp(registry, needrestart_data): | ||
| g = Gauge( | ||
| "needrestart_timestamp_seconds", | ||
| "information about the version and when it was last run", | ||
| labelnames=["version"], | ||
| registry=registry, | ||
| ) | ||
| g.labels(needrestart_data.version).set(needrestart_data.timestamp) | ||
|
|
||
|
|
||
| def write_kernel(registry, needrestart_data): | ||
| if needrestart_data.kernel_status: | ||
| e = Gauge( | ||
| "needrestart_kernel_status_info", | ||
| "information about the kernel status", | ||
| labelnames=["current", "expected"], | ||
| registry=registry, | ||
| ) | ||
| e.labels( | ||
| needrestart_data.kernel_current_version, | ||
| needrestart_data.kernel_expected_version, | ||
| ).set(needrestart_data.kernel_status.value) | ||
|
|
||
|
|
||
| def write_microcode(registry, needrestart_data): | ||
| if needrestart_data.microcode_status: | ||
| e = Gauge( | ||
| "needrestart_microcode_status_info", | ||
| "information about the microcode status", | ||
| labelnames=["current", "expected"], | ||
| registry=registry, | ||
| ) | ||
| e.labels( | ||
| needrestart_data.microcode_current_version, | ||
| needrestart_data.microcode_expected_version, | ||
| ).set(needrestart_data.microcode_status.value) | ||
|
|
||
|
|
||
| def write_services(registry, needrestart_data): | ||
| g = Gauge( | ||
| "needrestart_services_total", | ||
| "number of services requiring a restart", | ||
| registry=registry, | ||
| ) | ||
| g.set(needrestart_data.services_count) | ||
|
|
||
|
|
||
| def write_containers(registry, needrestart_data): | ||
| g = Gauge( | ||
| "needrestart_containers_total", | ||
| "number of containers requiring a restart", | ||
| registry=registry, | ||
| ) | ||
| g.set(needrestart_data.containers_count) | ||
|
|
||
|
|
||
| def write_sessions(registry, needrestart_data): | ||
| g = Gauge( | ||
| "needrestart_sessions_total", | ||
| "number of sessions requiring a restart", | ||
| registry=registry, | ||
| ) | ||
| g.set(needrestart_data.sessions_count) | ||
|
|
||
|
|
||
| def main(): | ||
| registry = CollectorRegistry() | ||
|
|
||
| try: | ||
| needrestart_output = subprocess.run( | ||
| ["needrestart", "-b"], capture_output=True, text=True, check=True | ||
| ).stdout | ||
| needrestart_data = NeedRestartData(needrestart_output) | ||
| except subprocess.CalledProcessError as e: | ||
| print(f"Error executing needrestart:\n{e}", file=sys.stderr) | ||
| sys.exit(1) | ||
| except Exception as e: | ||
| print(f"An unexpected error occurred:\n{e}", file=sys.stderr) | ||
| sys.exit(1) | ||
|
|
||
| write_timestamp(registry, needrestart_data) | ||
| write_kernel(registry, needrestart_data) | ||
| write_microcode(registry, needrestart_data) | ||
| write_services(registry, needrestart_data) | ||
| write_containers(registry, needrestart_data) | ||
| write_sessions(registry, needrestart_data) | ||
|
|
||
| print(generate_latest(registry).decode(), end="") | ||
|
|
||
|
|
||
| if __name__ == "__main__": | ||
| main() |
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