Ensure that the minimum number of manager nodes have been created in a swarm

MoyenneNiveau 1Revue manuelledocker

Description

You should ensure that the minimum number of required manager nodes is created in a swarm. Manager nodes within a swarm have control over the swarm and can change its configuration, including modifying security parameters. Having excessive manager nodes could render the swarm more susceptible to compromise. Reported as a manual review item: the audit needs a site-specific judgement.

Méthode de vérification

Méthode d'audit: Revue manuelle

Cette recommandation ne peut pas être vérifiée automatiquement. Une analyse la liste avec ces instructions lorsque vous passez --include-manual.

Run docker info and verify the number of managers. docker info --format '{{ .Swarm.Managers }}' Alternatively run the below command. docker node ls | grep 'Leader' Expected state: If an excessive number of managers is configured, the excess nodes can be demoted to workers using the following command: docker node demote <ID> Where <ID> is the node ID value of the manager to be demoted.

Méthode de correction

Méthode de correction: Recommandation ou correctif d'infrastructure

If an excessive number of managers is configured, the excess nodes can be demoted to workers using the following command: docker node demote <ID> Where <ID> is the node ID value of the manager to be demoted.

Propriétés

Systèmes d'exploitation: Tous
Étiquettes: dockermanual
Référence: CIS Docker Benchmark v1.9.0 - 7.1 Ensure that the minimum number of manager nodes have been created in a swarm