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garethrgarethr
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Work-in-progress openfaas package
This works when run from within the package, but not outside. This is because we don't yet allow for embedding additional configuration files inside the package, or set the correct file path context when run from outside.
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‎openfaas.dockerapp/.settings.yml.swp‎

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‎openfaas.dockerapp/docker-compose.yml‎

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version: "3.3"
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services:
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gateway:
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ports:
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- ${ports.gateway}:8080
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image: openfaas/gateway:${versions.gateway}
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networks:
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- functions
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environment:
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functions_provider_url: "http://faas-swarm:8080/"
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read_timeout: "300s" # Maximum time to read HTTP request
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write_timeout: "300s" # Maximum time to write HTTP response
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upstream_timeout: "300s" # Maximum duration of upstream function call - should be more than read_timeout and write_timeout
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dnsrr: "true" # Temporarily use dnsrr in place of VIP while issue persists on PWD
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faas_nats_address: "nats"
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faas_nats_port: 4222
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direct_functions: "${direct_functions}" # Functions are invoked directly over the overlay network
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direct_functions_suffix: ""
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basic_auth: "${auth}"
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secret_mount_path: "/run/secrets/"
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scale_from_zero: "${scale_from_zero}"
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deploy:
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resources:
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# limits: # Enable if you want to limit memory usage
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# memory: 200M
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reservations:
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memory: 100M
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restart_policy:
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condition: on-failure
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delay: 5s
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max_attempts: 20
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window: 380s
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placement:
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constraints:
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- 'node.platform.os == linux'
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secrets:
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- basic-auth-user
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- basic-auth-password
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faas-swarm:
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volumes:
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- "/var/run/docker.sock:/var/run/docker.sock"
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image: openfaas/faas-swarm:${versions.faas}
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networks:
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- functions
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environment:
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read_timeout: "300s" # set both here, and on your functions
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write_timeout: "300s" # set both here, and on your functions
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DOCKER_API_VERSION: "1.30"
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basic_auth: "${auth}"
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secret_mount_path: "/run/secrets/"
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deploy:
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placement:
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constraints:
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- 'node.role == manager'
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- 'node.platform.os == linux'
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resources:
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# limits: # Enable if you want to limit memory usage
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# memory: 100M
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reservations:
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memory: 100M
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restart_policy:
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condition: on-failure
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delay: 5s
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max_attempts: 20
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window: 380s
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secrets:
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- basic-auth-user
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- basic-auth-password
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nats:
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image: nats-streaming:${versions.nats-streaming}
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# Uncomment the following port mappings if you wish to expose the
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# NATS client and/or management ports
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# ports:
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# - 4222:4222
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# - 8222:8222
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command: "--store memory --cluster_id faas-cluster"
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networks:
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- functions
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deploy:
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resources:
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limits:
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memory: 125M
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reservations:
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memory: 50M
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placement:
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constraints:
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- 'node.platform.os == linux'
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queue-worker:
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image: openfaas/queue-worker:${versions.queue-worker}
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networks:
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- functions
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environment:
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max_inflight: "1"
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ack_wait: "300s" # Max duration of any async task / request
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basic_auth: "${auth}"
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secret_mount_path: "/run/secrets/"
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deploy:
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resources:
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limits:
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memory: 50M
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reservations:
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memory: 20M
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restart_policy:
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condition: on-failure
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delay: 5s
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max_attempts: 20
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window: 380s
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placement:
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constraints:
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- 'node.platform.os == linux'
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secrets:
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- basic-auth-user
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- basic-auth-password
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prometheus:
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image: prom/prometheus:${versions.prometheus}
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environment:
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no_proxy: "gateway"
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configs:
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- source: prometheus_config
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target: /etc/prometheus/prometheus.yml
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- source: prometheus_rules
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target: /etc/prometheus/alert.rules.yml
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command:
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- '--config.file=/etc/prometheus/prometheus.yml'
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ports:
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- ${ports.prometheus}:9090
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networks:
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- functions
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deploy:
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placement:
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constraints:
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- 'node.role == manager'
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- 'node.platform.os == linux'
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resources:
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limits:
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memory: 500M
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reservations:
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memory: 200M
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alertmanager:
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image: prom/alertmanager:${versions.alertmanager}
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environment:
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no_proxy: "gateway"
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command:
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- '--config.file=/alertmanager.yml'
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- '--storage.path=/alertmanager'
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networks:
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- functions
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ports:
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- ${ports.alertmanager}:9093
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deploy:
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resources:
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limits:
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memory: 50M
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reservations:
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memory: 20M
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placement:
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constraints:
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- 'node.role == manager'
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- 'node.platform.os == linux'
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configs:
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- source: alertmanager_config
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target: /alertmanager.yml
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configs:
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prometheus_config:
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file: ./prometheus/prometheus.yml
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prometheus_rules:
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file: ./prometheus/alert.rules.yml
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alertmanager_config:
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file: ./prometheus/alertmanager.yml
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networks:
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functions:
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driver: overlay
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attachable: true
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labels:
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- "openfaas=true"
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secrets:
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basic-auth-user:
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external: true
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basic-auth-password:
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external: true

‎openfaas.dockerapp/metadata.yml‎

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version: 0.1.0
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name: openfaas
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description: Severless functions made simple
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namespace: garethr
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maintainers:
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- name: gareth rushgrove
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email: gareth@morethanseven.net

‎openfaas.dockerapp/prometheus/alert.rules.yml‎

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groups:
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- name: prometheus/alert.rules
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rules:
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- alert: service_down
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expr: up == 0
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- alert: APIHighInvocationRate
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expr: sum(rate(gateway_function_invocation_total{code="200"}[10s])) BY (function_name) > 5
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for: 5s
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labels:
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service: gateway
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severity: major
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value: '{{$value}}'
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annotations:
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description: High invocation total on {{ $labels.instance }}
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summary: High invocation total on {{ $labels.instance }}

‎openfaas.dockerapp/prometheus/alertmanager.yml‎

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route:
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group_by: ['alertname', 'cluster', 'service']
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group_wait: 5s
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group_interval: 10s
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repeat_interval: 30s
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receiver: scale-up
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routes:
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- match:
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service: gateway
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receiver: scale-up
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severity: major
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inhibit_rules:
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- source_match:
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severity: 'critical'
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target_match:
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severity: 'warning'
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equal: ['alertname', 'cluster', 'service']
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receivers:
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- name: 'scale-up'
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webhook_configs:
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- url: http://gateway:8080/system/alert
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send_resolved: true

‎openfaas.dockerapp/prometheus/prometheus.yml‎

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# my global config
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global:
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scrape_interval: 15s # By default, scrape targets every 15 seconds.
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evaluation_interval: 15s # By default, scrape targets every 15 seconds.
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# scrape_timeout is set to the global default (10s).
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# Attach these labels to any time series or alerts when communicating with
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# external systems (federation, remote storage, Alertmanager).
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external_labels:
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monitor: 'faas-monitor'
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# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
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rule_files:
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- 'alert.rules.yml'
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# A scrape configuration containing exactly one endpoint to scrape:
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# Here it's Prometheus itself.
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scrape_configs:
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# The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
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- job_name: 'prometheus'
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# Override the global default and scrape targets from this job every 5 seconds.
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scrape_interval: 5s
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# metrics_path defaults to '/metrics'
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# scheme defaults to 'http'.
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static_configs:
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- targets: ['localhost:9090']
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- job_name: "gateway"
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scrape_interval: 5s
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dns_sd_configs:
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- names: ['tasks.gateway']
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port: 8080
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type: A
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refresh_interval: 5s
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alerting:
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alertmanagers:
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- static_configs:
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- targets:
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- alertmanager:9093

‎openfaas.dockerapp/settings.yml‎

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auth: true
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scale_from_zero: false
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direct_functions: true
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ports:
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gateway: 8080
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prometheus: 9090
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alertmanager: 9093
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versions:
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gateway: 0.9.2
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faas: 0.4.2
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nats-streaming: 0.6.0
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queue-worker: 0.5.2
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prometheus: v2.3.1
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alertmanager: v0.15.0

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