metallb VS cert-manager

Compare metallb vs cert-manager and see what are their differences.


A network load-balancer implementation for Kubernetes using standard routing protocols (by metallb)


Automatically provision and manage TLS certificates in Kubernetes (by cert-manager)
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metallb cert-manager
71 83
5,659 10,102
2.9% 2.2%
9.2 9.6
about 17 hours ago 3 days ago
Go Go
Apache License 2.0 Apache License 2.0
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of metallb. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-02-21.


Posts with mentions or reviews of cert-manager. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-03-23.
  • mTLS everywhere!
    5 projects | | 23 Mar 2023
    We need at least one root certificate. In turn, it will generate all other certificates. While it's possible to do every manually, I'll rely on cert-manager in Kubernetes. As its name implies, cert-manager is a solution to manage certificates.
  • Help me What to Choose?
    5 projects | | 16 Mar 2023
    Cert Manager
  • i must be the only guy that understands certificates
    8 projects | | 7 Mar 2023
    You know cert-manager already exists, right?
  • Does it make sense to use nginx on top of the ingress-nginx
    2 projects | | 17 Feb 2023
    For the average developer an Ingress is substantially simpler to understand. For an expert such as yourself there are additional annotations which may be added, to use nginx specfic features. However the big win using the nginx ingress controller is integration with other Kubernetes features like cert manager and External DNS
  • Connecting OpenSearch to Keycloak
    4 projects | | 14 Feb 2023
    - name: Deploy cert-manager kubernetes.core.helm: release_name: cert-manager release_namespace: cert-manager create_namespace: true wait: true chart_ref: cert-manager chart_repo_url: values: installCRDs: true - name: Deploy trust-manager kubernetes.core.helm: release_name: cert-manager-trust release_namespace: cert-manager create_namespace: true wait: true chart_ref: cert-manager-trust chart_repo_url: values: installCRDs: true - name: Create Root Issuer kubernetes.core.k8s: state: present definition: apiVersion: kind: Issuer metadata: namespace: cert-manager name: root-issuer spec: # Example uses self-signed # It is advisable to utilize a different kind of Issuer # for production selfSigned: {} - name: Create Root CA Certs kubernetes.core.k8s: state: present definition: apiVersion: kind: Certificate metadata: namespace: cert-manager name: root-ca spec: isCA: true # Omitted multiple values. # # for full Certificate spec secretName: root-ca privateLey: algorithm: ECDSA size: 256 issuerRef: name: root-issuer kind: Issuer group: - name: Create Cluster Issuer kubernetes.core.k8s: state: present definition: apiVersion: kind: ClusterIssuer metadata: name: cluster-issuer namespace: cert-manager spec: ca: secretName: root-ca - name: Create Root CA Chain bundle kubernetes.core.k8s: state: present definition: apiVersion: kind: Bundle metadata: name: root-bundle namespace: cert-manager spec: sources: - secret: name: root-ca key: ca.crt target: configMap: key:
  • How do you request and manage certificates on the application gateway level?
    2 projects | | 12 Feb 2023
    Long story short: We use cert-manager to generate TLS certitifates. Works perfectly. The problem is that I need the certificate at the Azure Application Gateway (TLS/SSL termination past the gateway) level, which in turn requires the certificate to be present at the Azure Key Vault.
  • What are some tips and tricks for running k3s in production?
    2 projects | | 2 Feb 2023
    You can also use cert-manager to automatically obtain and renew certificates.
  • How to reduce the cost of GitHub Actions
    7 projects | | 26 Jan 2023
    # deploy cert-manager (MoeLove) ➜ kubectl apply -f # deploy ARC (MoeLove) ➜ helm repo add actions-runner-controller (MoeLove) ➜ helm upgrade --install --namespace actions-runner-system --create-namespace\ --set=authSecret.create=true\ --set=authSecret.github_token="REPLACE_YOUR_TOKEN_HERE"\ --wait actions-runner-controller actions-runner-controller/actions-runner-controller # create runner (MoeLove) ➜ cat <
  • Just finished migrating my old tower servers to a Kubernetes cluster on my new rack!
    19 projects | | 21 Jan 2023
    When paired with Cert Manager, and using Vultr for my DNS server, I can issue valid LetsEncrypt certificates with a DNS01 challenge. So I don't need to worry about having an application being open to the internet on port 80 in order to avoid browser warnings.
  • Getting started with kubectl plugins
    20 projects | | 18 Jan 2023
    Link to GitHub Repository

What are some alternatives?

When comparing metallb and cert-manager you can also consider the following projects:

kube-vip - Kubernetes Control Plane Virtual IP and Load-Balancer

calico - Cloud native networking and network security

ingress-nginx - Ingress-NGINX Controller for Kubernetes

external-dns - Configure external DNS servers (AWS Route53, Google CloudDNS and others) for Kubernetes Ingresses and Services

aws-load-balancer-controller - A Kubernetes controller for Elastic Load Balancers

kube-plex - Scalable Plex Media Server on Kubernetes -- dispatch transcode jobs as pods on your cluster!

rancher - Complete container management platform

Portainer - Making Docker and Kubernetes management easy.

awx-operator - An Ansible AWX operator for Kubernetes built with Operator SDK and Ansible. 🤖

cilium-cli - CLI to install, manage & troubleshoot Kubernetes clusters running Cilium

k3s - Lightweight Kubernetes

k3sup - bootstrap K3s over SSH in < 60s 🚀