refactor(terraform): Directory structure

Signed-off-by: Peter Mikus <pmikus@cisco.com>
Change-Id: I2f3cdf0241aaf7c4a8ba4e00b701df10c9165cf8

1 files changed, 377 insertions, 0 deletions

diff --git a/fdio.infra.terraform/terraform-nomad-alertmanager/conf/nomad/alertmanager.hcl.tftpl b/fdio.infra.terraform/terraform-nomad-alertmanager/conf/nomad/alertmanager.hcl.tftpl
new file mode 100644
index 0000000000..87206ac5a0
--- /dev/null
+++ b/fdio.infra.terraform/terraform-nomad-alertmanager/conf/nomad/alertmanager.hcl.tftpl
@@ -0,0 +1,377 @@
+job "${job_name}" {
+  # The "region" parameter specifies the region in which to execute the job.
+  # If omitted, this inherits the default region name of "global".
+  # region    = "${region}"
+
+  # The "datacenters" parameter specifies the list of datacenters which should
+  # be considered when placing this task. This must be provided.
+  datacenters = "${datacenters}"
+
+  # The "type" parameter controls the type of job, which impacts the scheduler's
+  # decision on placement. This configuration is optional and defaults to
+  # "service". For a full list of job types and their differences, please see
+  # the online documentation.
+  #
+  #     https://www.nomadproject.io/docs/jobspec/schedulers
+  #
+  type        = "service"
+
+  update {
+    # The "max_parallel" parameter specifies the maximum number of updates to
+    # perform in parallel. In this case, this specifies to update a single task
+    # at a time.
+    max_parallel      = ${max_parallel}
+
+    health_check      = "checks"
+
+    # The "min_healthy_time" parameter specifies the minimum time the allocation
+    # must be in the healthy state before it is marked as healthy and unblocks
+    # further allocations from being updated.
+    min_healthy_time  = "10s"
+
+    # The "healthy_deadline" parameter specifies the deadline in which the
+    # allocation must be marked as healthy after which the allocation is
+    # automatically transitioned to unhealthy. Transitioning to unhealthy will
+    # fail the deployment and potentially roll back the job if "auto_revert" is
+    # set to true.
+    healthy_deadline  = "3m"
+
+    # The "progress_deadline" parameter specifies the deadline in which an
+    # allocation must be marked as healthy. The deadline begins when the first
+    # allocation for the deployment is created and is reset whenever an allocation
+    # as part of the deployment transitions to a healthy state. If no allocation
+    # transitions to the healthy state before the progress deadline, the
+    # deployment is marked as failed.
+    progress_deadline = "10m"
+
+%{ if use_canary }
+    # The "canary" parameter specifies that changes to the job that would result
+    # in destructive updates should create the specified number of canaries
+    # without stopping any previous allocations. Once the operator determines the
+    # canaries are healthy, they can be promoted which unblocks a rolling update
+    # of the remaining allocations at a rate of "max_parallel".
+    #
+    # Further, setting "canary" equal to the count of the task group allows
+    # blue/green deployments. When the job is updated, a full set of the new
+    # version is deployed and upon promotion the old version is stopped.
+    canary            = ${canary}
+
+    # Specifies if the job should auto-promote to the canary version when all
+    # canaries become healthy during a deployment. Defaults to false which means
+    # canaries must be manually updated with the nomad deployment promote
+    # command.
+    auto_promote      = ${auto_promote}
+
+    # The "auto_revert" parameter specifies if the job should auto-revert to the
+    # last stable job on deployment failure. A job is marked as stable if all the
+    # allocations as part of its deployment were marked healthy.
+    auto_revert       = ${auto_revert}
+%{ endif }
+  }
+
+  # All groups in this job should be scheduled on different hosts.
+  constraint {
+    operator = "distinct_hosts"
+    value    = "true"
+  }
+
+  # The "group" stanza defines a series of tasks that should be co-located on
+  # the same Nomad client. Any task within a group will be placed on the same
+  # client.
+  #
+  #     https://www.nomadproject.io/docs/job-specification/group
+  #
+  group "${job_name}-group-1" {
+    # The "count" parameter specifies the number of the task groups that should
+    # be running under this group. This value must be non-negative and defaults
+    # to 1.
+    count = ${group_count}
+
+    # The volume stanza allows the group to specify that it requires a given
+    # volume from the cluster. The key of the stanza is the name of the volume
+    # as it will be exposed to task configuration.
+    #
+    # https://www.nomadproject.io/docs/job-specification/volume
+    %{ if use_host_volume }
+    volume "${job_name}-volume-1" {
+      type      = "host"
+      read_only = false
+      source    = "${volume_source}"
+    }
+    %{ endif }
+
+    # The restart stanza configures a tasks's behavior on task failure. Restarts
+    # happen on the client that is running the task.
+    #
+    # https://www.nomadproject.io/docs/job-specification/restart
+    #
+    restart {
+      interval = "30m"
+      attempts = 40
+      delay    = "15s"
+      mode     = "delay"
+    }
+
+    # The constraint allows restricting the set of eligible nodes. Constraints
+    # may filter on attributes or client metadata.
+    #
+    #     https://www.nomadproject.io/docs/job-specification/constraint
+    #
+    constraint {
+      attribute = "$${attr.cpu.arch}"
+      operator  = "!="
+      value     = "arm64"
+    }
+
+    constraint {
+      attribute = "$${node.class}"
+      value     = "builder"
+    }
+
+    # The network stanza specifies the networking requirements for the task
+    # group, including the network mode and port allocations. When scheduling
+    # jobs in Nomad they are provisioned across your fleet of machines along
+    # with other jobs and services. Because you don't know in advance what host
+    # your job will be provisioned on, Nomad will provide your tasks with
+    # network configuration when they start up.
+    #
+    #     https://www.nomadproject.io/docs/job-specification/network
+    #
+    network {
+      port "${service_name}" {
+        static = ${port}
+        to     = ${port}
+      }
+    }
+
+    # The "task" stanza creates an individual unit of work, such as a Docker
+    # container, web application, or batch processing.
+    #
+    #     https://www.nomadproject.io/docs/job-specification/task
+    #
+    task "${job_name}-task-1" {
+      # The "driver" parameter specifies the task driver that should be used to
+      # run the task.
+      driver = "exec"
+
+    %{ if use_host_volume }
+      volume_mount {
+        volume      = "${job_name}-volume-1"
+        destination = "${volume_destination}"
+        read_only   = false
+      }
+    %{ endif }
+
+    %{ if use_vault_provider }
+      vault {
+        policies = "${vault_kv_policy_name}"
+      }
+    %{ endif }
+
+      # The "config" stanza specifies the driver configuration, which is passed
+      # directly to the driver to start the task. The details of configurations
+      # are specific to each driver, so please see specific driver
+      # documentation for more information.
+      config {
+        command = "local/alertmanager-${version}.linux-amd64/alertmanager"
+        args    = [
+          "--config.file=secrets/alertmanager.yml"
+        ]
+      }
+
+      # The artifact stanza instructs Nomad to fetch and unpack a remote resource,
+      # such as a file, tarball, or binary. Nomad downloads artifacts using the
+      # popular go-getter library, which permits downloading artifacts from a
+      # variety of locations using a URL as the input source.
+      #
+      #     https://www.nomadproject.io/docs/job-specification/artifact
+      #
+      artifact {
+        source = "${url}"
+      }
+
+      # The "template" stanza instructs Nomad to manage a template, such as
+      # a configuration file or script. This template can optionally pull data
+      # from Consul or Vault to populate runtime configuration data.
+      #
+      #     https://www.nomadproject.io/docs/job-specification/template
+      #
+      template {
+        change_mode     = "noop"
+        change_signal   = "SIGINT"
+        destination     = "secrets/alertmanager.yml"
+        left_delimiter  = "{{{"
+        right_delimiter = "}}}"
+        data            = <<EOH
+# The directory from which notification templates are read.
+templates:
+- '/etc/alertmanager/template/*.tmpl'
+
+#tls_config:
+#  # CA certificate to validate the server certificate with.
+#  ca_file: <filepath> ]
+#
+#  # Certificate and key files for client cert authentication to the server.
+#  cert_file: <filepath>
+#  key_file: <filepath>
+#
+#  # ServerName extension to indicate the name of the server.
+#  # http://tools.ietf.org/html/rfc4366#section-3.1
+#  server_name: <string>
+#
+#  # Disable validation of the server certificate.
+#  insecure_skip_verify: true
+
+# The root route on which each incoming alert enters.
+route:
+  receiver: '${slack_default_receiver}'
+
+  # The labels by which incoming alerts are grouped together. For example,
+  # multiple alerts coming in for cluster=A and alertname=LatencyHigh would
+  # be batched into a single group.
+  #
+  # To aggregate by all possible labels use '...' as the sole label name.
+  # This effectively disables aggregation entirely, passing through all
+  # alerts as-is. This is unlikely to be what you want, unless you have
+  # a very low alert volume or your upstream notification system performs
+  # its own grouping. Example: group_by: [...]
+  group_by: ['alertname']
+
+  # When a new group of alerts is created by an incoming alert, wait at
+  # least 'group_wait' to send the initial notification.
+  # This way ensures that you get multiple alerts for the same group that start
+  # firing shortly after another are batched together on the first
+  # notification.
+  group_wait: 30s
+
+  # When the first notification was sent, wait 'group_interval' to send a batch
+  # of new alerts that started firing for that group.
+  group_interval: 5m
+
+  # If an alert has successfully been sent, wait 'repeat_interval' to
+  # resend them.
+  repeat_interval: 3h
+
+  # All the above attributes are inherited by all child routes and can
+  # overwritten on each.
+  # The child route trees.
+  routes:
+  - match_re:
+      alertname: JenkinsJob.*
+    receiver: ${slack_jenkins_receiver}
+    routes:
+    - match:
+        severity: critical
+      receiver: '${slack_jenkins_receiver}'
+
+  - match_re:
+      service: .*
+    receiver: ${slack_default_receiver}
+    routes:
+    - match:
+        severity: critical
+      receiver: '${slack_default_receiver}'
+
+# Inhibition rules allow to mute a set of alerts given that another alert is
+# firing.
+# We use this to mute any warning-level notifications if the same alert is
+# already critical.
+inhibit_rules:
+- source_match:
+    severity: 'critical'
+  target_match:
+    severity: 'warning'
+  equal: ['alertname', 'instance']
+
+receivers:
+- name: '${slack_jenkins_receiver}'
+  slack_configs:
+  - api_url: 'https://hooks.slack.com/services/${slack_jenkins_api_key}'
+    channel: '#${slack_jenkins_channel}'
+    send_resolved: true
+    icon_url: https://avatars3.githubusercontent.com/u/3380462
+    title: |-
+     [{{ .Status | toUpper }}{{ if eq .Status "firing" }}:{{ .Alerts.Firing | len }}{{ end }}] {{ .CommonLabels.alertname }} for {{ .CommonLabels.job }}
+     {{- if gt (len .CommonLabels) (len .GroupLabels) -}}
+       {{" "}}(
+       {{- with .CommonLabels.Remove .GroupLabels.Names }}
+         {{- range $index, $label := .SortedPairs -}}
+           {{ if $index }}, {{ end }}
+           {{- $label.Name }}="{{ $label.Value -}}"
+         {{- end }}
+       {{- end -}}
+       )
+     {{- end }}
+    text: >-
+     {{ range .Alerts -}}
+     *Alert:* {{ .Annotations.summary }}{{ if .Labels.severity }} - `{{ .Labels.severity }}`{{ end }}
+
+     *Description:* {{ .Annotations.description }}
+
+     *Details:*
+       {{ range .Labels.SortedPairs }} • *{{ .Name }}:* `{{ .Value }}`
+       {{ end }}
+     {{ end }}
+
+- name: '${slack_default_receiver}'
+  slack_configs:
+  - api_url: 'https://hooks.slack.com/services/${slack_default_api_key}'
+    channel: '#${slack_default_channel}'
+    send_resolved: true
+    icon_url: https://avatars3.githubusercontent.com/u/3380462
+    title: |-
+     [{{ .Status | toUpper }}{{ if eq .Status "firing" }}:{{ .Alerts.Firing | len }}{{ end }}] {{ .CommonLabels.alertname }} for {{ .CommonLabels.job }}
+     {{- if gt (len .CommonLabels) (len .GroupLabels) -}}
+       {{" "}}(
+       {{- with .CommonLabels.Remove .GroupLabels.Names }}
+         {{- range $index, $label := .SortedPairs -}}
+           {{ if $index }}, {{ end }}
+           {{- $label.Name }}="{{ $label.Value -}}"
+         {{- end }}
+       {{- end -}}
+       )
+     {{- end }}
+    text: >-
+     {{ range .Alerts -}}
+     *Alert:* {{ .Annotations.summary }}{{ if .Labels.severity }} - `{{ .Labels.severity }}`{{ end }}
+
+     *Description:* {{ .Annotations.description }}
+
+     *Details:*
+       {{ range .Labels.SortedPairs }} • *{{ .Name }}:* `{{ .Value }}`
+       {{ end }}
+     {{ end }}
+EOH
+      }
+
+      # The service stanza instructs Nomad to register a service with Consul.
+      #
+      #     https://www.nomadproject.io/docs/job-specification/service
+      #
+      service {
+        name       = "${service_name}"
+        port       = "${service_name}"
+        tags       = [ "${service_name}$${NOMAD_ALLOC_INDEX}" ]
+        check {
+          name     = "Alertmanager Check Live"
+          type     = "http"
+          path     = "/-/healthy"
+          interval = "10s"
+          timeout  = "2s"
+        }
+      }
+
+      # The "resources" stanza describes the requirements a task needs to
+      # execute. Resource requirements include memory, network, cpu, and more.
+      # This ensures the task will execute on a machine that contains enough
+      # resource capacity.
+      #
+      #     https://www.nomadproject.io/docs/job-specification/resources
+      #
+      resources {
+        cpu    = ${cpu}
+        memory = ${memory}
+      }
+    }
+  }
+}