azp-agent-autoscaler

command module
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Published: Oct 20, 2023 License: MIT Imports: 12 Imported by: 0

README

Azure Pipeline Agent Autoscaler

azp-agent-autoscaler calls Azure Devops to automatically scale a Kubernetes deployment of an Azure Pipelines agent. A Helm chart for Azure Pipeline agents can be found here, which also includes this app.

azp-agent-autoscaler should (in theory) work in Kubernetes versions that have the apps/v1 API Versions of StatefulSets (Kubernetes 1.9+). It has been tested in Kubernetes versions 1.13-1.15.

Installation

First, add this repo to Helm:

helm repo add azp-agent-autoscaler https://raw.githubusercontent.com/ogmaresca/azp-agent-autoscaler/master/charts
helm repo update

Then use this command to install it:

helm upgrade --install --namespace=azp azp-agent-autoscaler azp-agent-autoscaler/azp-agent-autoscaler --set 'azp.url=https://dev.azure.com/accountName,azp.token=AzureDevopsAccessToken,agents.Name=azp-agent'

You can find the limit on parallel jobs by going to your project settings in Azure Devops, clicking on Parallel jobs, and viewing your limit of self-hosted jobs.

Configuration

The values azp.token and azp.url are required to install the chart. azp.token is your Personal Acces token. This token requires Agent Pools (Read) permission. azp.url is your Azure Devops URL, usually https://dev.azure.com/<Your Organization>.

agents.Name is the name of the resource your agents are deployed in. agents.Namespace is the namespace the resource is in, which defaults to the release namespace. agents.Kind is the resource kind the agents are deployed in. Only StatefulSet is currently supported, which is the default value.

Parameter Description Default
nameOverride An override value for the name.
fullnameOverride An override value for the full name.
min The minimum number of agent pods. 1
max The maximum number of agent pods. 100
logLevel The log level (trace, debug, info, warn, error, fatal, panic) info
rate The period to poll Azure Devops and the Kubernetes API 10s
scaleDownMax The maximum number of pods allowed to scale down at a time 1
scaleDownDelay The time to wait before being allowed to scale down again 10s
agents.Kind The Kubernetes resource kind of the agents StatefulSet
agents.Name The Kubernetes resource name of the agents ``
agents.Namespace The Kubernetes resource namespace of the agents .Release.Namespace
azp.url The Azure Devops account URL. ex: https://dev.azure.com/Organization
azp.token The Azure Devops access token.
azp.existingSecret An existing secret that contains the token.
azp.existingSecretKey The key of the existing secret that contains the token.
image.repository The Docker Hub repository of the agent autoscaler. docker.io/gmaresca/azp-agent-autoscaler
image.tag The image tag of the agent autoscaler. latest version
image.pullPolicy The image pull policy. IfNotPresent
image.pullSecrets Image Pull Secrets to use. []
resources.requests.cpu The CPU requests of the agent autoscaler. 0.05
resources.requests.memory The memory requests of the agent autoscaler. 16Mi
resources.limits.cpu The CPU limits of the agent autoscaler. 0.1
resources.limits.memory The memory limits of the agent autoscaler. 32Mi
livenessProbe.failureThreshold The failure threshold for the liveness probe. 3
livenessProbe.initialDelaySeconds The initial delay for the liveness probe. 1
livenessProbe.periodSeconds The liveness probe period. 10
livenessProbe.successThreshold The success threshold for the liveness probe. 1
livenessProbe.timeoutSeconds The timeout for the liveness probe. 1
minReadySeconds The deployment's minReadySeconds. 0
revisionHistoryLimit Number of Deployment versions to keep. 10
updateStrategy.type The Deployment Update Strategy type. Recreate
labels Labels to add to the Deployment. {}
annotations Annotations to add to the Deployment. {}
podLabels Labels to add to the Pod. {}
podAnnotations Annotations to add to the Pod. {}
pdb.enabled Whether to enable a PodDisruptionBudget. false
pdb.minAvailable The minimum number of pods to keep. Incompatible with maxUnavailable. 50%
pdb.maxUnavailable The maximum unvailable pods. Incompatible with minAvailable. 50%
rbac.create Whether to create Role Based Access for the deployment. true
rbac.psp.enabled Whether to create a PodSecurityPolicy for the deployment. false
rbac.psp.name If set, the name of the PodSecurityPolicy to use, or create if rbac.psp.enabled is true.
rbac.psp.labels Labels to add to the PodSecurityPolicy. {}
rbac.psp.annotations Annotations to add to the PodSecurityPolicy. {}
rbac.psp.appArmorProfile The AppArmor profile to use (if empty, AppArmor annotations will not be added to the PodSecurityPolicy). runtime/default
rbac.psp.seccompProfile The Seccomp profile to use (if empty, seccomp annotations will not be added to the PodSecurityPolicy). runtime/default
serviceAccount.create Whether to create a service account for the deployment. true
serviceAccount.name The name of an existing SA serviceAccount.create is false.
serviceAccount.labels Labels to add to the ServiceAccount. {}
serviceAccount.annotations Annotations to add to the ServiceAccount. {}
serviceMonitor.enabled Create a prometheus-operator ServiceMonitor false
serviceMonitor.namespace The namespace to install the ServiceMonitor Release namespace
serviceMonitor.labels Labels to add to the ServiceMonitor {}
serviceMonitor.honorLabels Set honorLabels on the ServiceMonitor spec
serviceMonitor.interval The scrape interval on the ServiceMonitor Defaults to rate
serviceMonitor.metricRelabelings metricRelabelings to set on the ServiceMonitor false
serviceMonitor.relabelings relabelings to set on the ServiceMonitor false
grafanaDashboard.enabled Create a ConfigMap with a Grafana dashboard. false
grafanaDashboard.labels Labels to add to the Grafana dashboard ConfigMap. {"grafana_dashboard":"1"}
rbac.getConfigmaps Allow getting ConfigMaps, to retrieve the AZP_POOL env value. false
rbac.getSecrets Allow getting Secrets, to retrieve the AZP_POOL env value. false
dnsPolicy The pod DNS policy. null
dnsConfig The pod DNS config. {}
restartPolicy The pod restart policy. Always
nodeSelector The pod node selector. {}
tolerations The pod node tolerations. {}
affinity The pod node affinity. {}
securityContext The pod security context. {runAsUser:1000,runAsGroup:2000,fsGroup:3000,runAsNonRoot:true}
hostNetwork Whether to use the host network of the node. false
initContainers Init containers to add. []
lifecycle Lifecycle (postStart, preStop) for the pod. {}
sidecars Additional containers to add. []

Docker Hub

View the Docker Hub page for azp-agent-autoscaler.

Documentation

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