Why Your Cloud Is Slow: 6 Hidden Bottlenecks
Learn why cloud workloads stay slow despite normal CPU and RAM, and how to diagnose storage, network, VM, load-balancer, and shared-resource bottlenecks.
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Des notes d’ingénierie issues de l’exploitation d’infrastructures ouvertes : pannes, décisions de conception et travail upstream qui améliorent l’infrastructure ouverte.
Parcourir toutes les notesLearn why cloud workloads stay slow despite normal CPU and RAM, and how to diagnose storage, network, VM, load-balancer, and shared-resource bottlenecks.
Lire la notePrivate cloud compliance checklist covering IAM, encryption, backups, disaster recovery, logging, and other essential security controls.
Lire la noteLearn how aging virtualization, legacy hardware, and manual operations increase infrastructure costs and how OpenStack can support modernization.
Lire la notePrivate cloud compliance checklist covering IAM, encryption, backups, disaster recovery, logging, and other essential security controls.
TL;DR
Maintaining a compliant private cloud requires continuous attention to security, governance, and operational controls. This checklist covers the key areas every organization should review, including identity and access management, encryption, key management, logging, audit trails, backup, disaster recovery, network segmentation, and vulnerability management. Whether you manage your own infrastructure or use a managed platform, regularly reviewing these controls can improve security, simplify audits, and strengthen your overall compliance posture.
Maintaining a compliant private cloud requires more than passing an annual audit. It is an ongoing process of reviewing security controls, documenting operational practices, and ensuring responsibilities are clearly defined across the environment. As regulations evolve and infrastructure becomes more complex, regularly validating your compliance posture helps reduce risk and prepare for future audits.
The importance of these controls continues to grow. According to IBM's Cost of a Data Breach Report 2025, the average global cost of a data breach was $4.44 million, while organizations using AI-powered security and automation reduced breach costs by an average of $1.9 million. The report also found that 63% of organizations lacked AI governance policies, highlighting that governance remains a critical component of modern compliance programs.
This checklist outlines the key technical and operational controls every organization should regularly review, from identity and access management to disaster recovery and vulnerability management. Whether you're operating your own private cloud or using a managed platform, these best practices can help strengthen your security posture and improve audit readiness.
For organizations looking to reduce the operational burden of managing these controls, VEXXHOST’s Atmosphere combines OpenStack, Kubernetes, and day-two operations into a fully managed private cloud platform, allowing teams to focus on governance, compliance, and their applications rather than day-to-day infrastructure management.
Identity and Access Management (IAM) controls who can access your cloud environment and what actions they are allowed to perform. It is one of the first areas auditors review because excessive permissions, shared accounts, and weak authentication are common causes of security incidents and compliance findings.
An effective IAM strategy follows the principle of least privilege, ensuring that users, applications, and services receive only the permissions required to perform their tasks. Access should be reviewed regularly, especially as users change roles or leave the organization.
For OpenStack environments, identity services such as Keystone provide centralized authentication, role-based access control (RBAC), and integration with enterprise identity providers, helping organizations manage access consistently across the platform.
IAM Compliance Checklist
☐ Enable multi-factor authentication (MFA) for all privileged accounts.
☐ Implement role-based access control (RBAC) and follow the principle of least privilege.
☐ Integrate with a centralized identity provider such as LDAP, Active Directory, or OpenID Connect.
☐ Remove or disable inactive and unused accounts regularly.
☐ Review user permissions periodically and document access changes.
☐ Avoid shared administrator accounts and use individual identities for administrative actions.
☐ Log authentication attempts and privileged actions for auditing purposes.
Identity and access management is one of the core principles of a zero-trust architecture. Learn more in our article Security-by-Default: Building Zero-Trust Cloud Infrastructure with OpenStack and Atmosphere, where we explore how identity, least privilege, and continuous verification strengthen private cloud security.
Encryption helps protect sensitive information by making data unreadable to unauthorized users. It is a fundamental security control and a requirement in many regulatory frameworks, including GDPR, HIPAA, PCI DSS, and ISO 27001.
A compliant private cloud should protect data both at rest, such as volumes, databases, and backups, and in transit using secure communication protocols like TLS. Organizations should also establish clear policies for encryption key ownership, rotation, and access, as weak key management can undermine otherwise strong encryption.
For OpenStack environments, encryption can be applied across storage services and integrated with external key management solutions, helping organizations meet security and compliance requirements while maintaining control over their data.
Encryption Compliance Checklist
☐ Encrypt sensitive data at rest.
☐ Encrypt all data in transit using TLS.
☐ Use approved encryption algorithms and protocols.
☐ Encrypt backups and snapshots.
☐ Protect secrets and credentials from being stored in plain text.
☐ Regularly review encryption policies and configurations.
☐ Verify that encryption is enabled for all production workloads.
Encryption is only as effective as the protection of the encryption keys themselves. A key management strategy defines how encryption keys are generated, stored, rotated, and retired, helping prevent unauthorized access to sensitive data.
Many compliance frameworks require organizations to demonstrate that encryption keys are protected separately from the data they secure. Access to keys should be limited to authorized users and services, with all key-related activities logged for auditing purposes. Organizations should also establish policies for key rotation and lifecycle management to reduce the risk of compromised credentials.
OpenStack environments can integrate with dedicated key management services to securely store and manage encryption keys, secrets, and certificates. This helps organizations centralize key management while supporting encryption across storage, images, and other cloud services.
Key Management Compliance Checklist
☐ Store encryption keys separately from encrypted data.
☐ Restrict access to encryption keys using role-based access controls.
☐ Rotate encryption keys regularly according to policy.
☐ Use a centralized Key Management Service (KMS) or Hardware Security Module (HSM) where appropriate.
☐ Log and monitor key creation, rotation, and access events.
☐ Define and document key lifecycle and recovery procedures.
☐ Regularly review key management policies and permissions.
Logging and monitoring help organizations detect security events, investigate incidents, and demonstrate compliance during audits. Without reliable logs, it can be difficult to determine what happened, when it occurred, or who performed a particular action.
A compliant private cloud should collect logs from infrastructure, applications, identity services, and network components in a centralized location. Monitoring should continuously identify suspicious activity, configuration changes, and system failures, allowing teams to respond quickly and reduce operational risk.
Logs should also be retained for an appropriate period based on regulatory or organizational requirements. Regularly reviewing alerts and monitoring dashboards helps identify issues before they become security incidents or compliance findings.
☐ Collect logs from infrastructure, applications, and identity services.
☐ Centralize log collection for easier monitoring and analysis.
☐ Enable alerts for suspicious activity and critical system events.
☐ Monitor authentication attempts and privileged account activity.
☐ Define and enforce log retention policies.
☐ Protect logs from unauthorized modification or deletion.
☐ Regularly review monitoring dashboards and security alerts.
Audit trails provide a chronological record of actions performed across your private cloud environment. Unlike general system logs, audit trails focus on who performed an action, what changed, when it occurred, and where it happened. They are essential for demonstrating compliance, supporting forensic investigations, and proving accountability during security audits.
A complete audit trail should capture administrative actions, authentication events, configuration changes, and access to sensitive resources. These records should be protected from modification, retained according to regulatory requirements, and readily available when needed for an audit or incident investigation.
For OpenStack environments, audit information can be collected across services to provide visibility into user activity and infrastructure changes, helping organizations maintain accountability and meet compliance obligations.
☐ Record all administrative and privileged user actions.
☐ Track configuration changes across infrastructure and workloads.
☐ Maintain timestamps and user identities for all recorded events.
☐ Protect audit logs from unauthorized modification or deletion.
☐ Retain audit records according to regulatory and organizational requirements.
☐ Regularly review audit records for unusual or unauthorized activity.
☐ Ensure audit evidence can be exported when required for compliance assessments.
Backups are a critical component of any compliance strategy, helping organizations recover data after accidental deletion, hardware failure, ransomware attacks, or other unexpected events. While snapshots can provide fast recovery from operational issues, they should complement, not replace, a comprehensive backup strategy. Many compliance frameworks require organizations to maintain reliable backup procedures and demonstrate that critical data can be successfully restored.
A compliant backup strategy should include regular backups of workloads, databases, and configuration data, with copies stored securely and encrypted. Just as importantly, organizations should routinely test backup restoration procedures to verify that data can be recovered within their required recovery objectives.
For OpenStack environments, Ceph provides highly available, distributed storage that helps protect data against hardware failures while supporting snapshots, replication, and scalable storage for virtual machines and cloud-native workloads.
☐ Perform regular backups of critical workloads and data.
☐ Encrypt backup data at rest and in transit.
☐ Store backup copies separately from production environments.
☐ Define backup retention policies based on business and regulatory requirements.
☐ Test backup restoration procedures regularly.
☐ Verify backup integrity after creation and restoration.
☐ Document backup schedules and recovery procedures.
While backups help recover data, disaster recovery (DR) ensures that critical services can be restored after major disruptions such as infrastructure failures, cyberattacks, or natural disasters. A disaster recovery plan defines how workloads will be recovered, where they will be restored, and how quickly business operations can resume.
An effective disaster recovery strategy should include documented recovery procedures, defined recovery objectives, and regular testing. Recovery plans should also be reviewed whenever significant changes are made to the infrastructure to ensure they remain effective.
For OpenStack environments, resilient storage platforms such as Ceph and highly available control planes can improve fault tolerance and support disaster recovery planning. Learn more about Building Cloud Resilience: Disaster Recovery & Continuity, where we explore disaster recovery strategies, backup automation, and business continuity on Atmosphere.
☐ Define Recovery Time Objectives (RTO) and Recovery Point Objectives (RPO).
☐ Document disaster recovery procedures for critical workloads.
☐ Regularly test disaster recovery plans and failover procedures.
☐ Replicate critical data to a secondary location where appropriate.
☐ Verify that backup and recovery processes support disaster recovery objectives.
☐ Review and update disaster recovery plans after major infrastructure changes.
☐ Train personnel on disaster recovery procedures and responsibilities.
Network segmentation helps limit the spread of security incidents by separating workloads, users, and services into isolated network zones. It is a common requirement in compliance frameworks because it reduces the risk of unauthorized access to sensitive systems and helps enforce security boundaries.
A well-designed private cloud should separate production, development, management, and backup environments while restricting communication between them based on business requirements. Access between network segments should be controlled through security groups, firewalls, and network policies, ensuring that only authorized traffic is permitted.
In OpenStack, network isolation can be achieved using Neutron, security groups, VLANs, and virtual networking, allowing organizations to build secure multi-tenant environments while maintaining compliance with regulatory and internal security requirements.
☐ Separate production, development, and testing environments.
☐ Isolate management networks from workload traffic.
☐ Restrict communication between network segments using security groups or firewalls.
☐ Apply the principle of least privilege to network access.
☐ Regularly review and remove unnecessary firewall rules.
☐ Monitor network traffic for unusual or unauthorized activity.
☐ Document network architecture and segmentation policies.
Vulnerability management is the process of identifying, assessing, and remediating security weaknesses before they can be exploited. Regular vulnerability assessments help organizations reduce risk, maintain compliance, and ensure that systems remain protected as new threats emerge.
An effective vulnerability management program should include routine vulnerability scanning, timely patching of supported software, secure configuration reviews, and a process for prioritizing remediation based on risk. Organizations should also monitor for newly disclosed vulnerabilities affecting their infrastructure and applications and verify that remediation efforts have been successfully completed.
For organizations using Atmosphere, VEXXHOST manages the lifecycle of the underlying OpenStack platform, including security updates and platform maintenance, helping reduce operational overhead while supporting a secure and compliant infrastructure.
☐ Perform regular vulnerability scans across infrastructure and workloads.
☐ Prioritize remediation based on severity and business risk.
☐ Apply security patches and updates promptly.
☐ Monitor for newly disclosed vulnerabilities affecting your environment.
☐ Review systems against secure configuration baselines.
☐ Validate that vulnerabilities have been successfully remediated.
☐ Document vulnerability assessments and remediation activities for audit purposes.
Maintaining a compliant private cloud is an ongoing process, not a one-time project. From identity and access management to vulnerability management, each control plays a role in protecting sensitive data, reducing risk, and demonstrating compliance during audits.
This checklist provides a practical starting point for evaluating your private cloud environment and identifying areas that may require additional attention. Regular reviews, clear ownership of security responsibilities, and continuous monitoring will help organizations strengthen their compliance posture as regulations and infrastructure evolve.
For organizations looking to reduce the operational burden of maintaining a compliant private cloud, VEXXHOST’s Atmosphere combines OpenStack, Kubernetes, and day-two operations into a fully managed platform. Our team manages the underlying infrastructure, allowing yours to focus on governance, security, and the applications that drive your business.
Ready to evaluate your private cloud? Explore Atmosphere or contact the team to discuss your compliance, security, and infrastructure requirements.
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