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|
# frozen_string_literal: true
module Clusters
module Applications
class Fluentd < ApplicationRecord
VERSION = '2.4.0'
CILIUM_CONTAINER_NAME = 'cilium-monitor'
self.table_name = 'clusters_applications_fluentd'
include ::Clusters::Concerns::ApplicationCore
include ::Clusters::Concerns::ApplicationStatus
include ::Clusters::Concerns::ApplicationVersion
include ::Clusters::Concerns::ApplicationData
default_value_for :version, VERSION
default_value_for :port, 514
default_value_for :protocol, :tcp
enum protocol: { tcp: 0, udp: 1 }
validate :has_at_least_one_log_enabled?
def chart
'stable/fluentd'
end
def install_command
Gitlab::Kubernetes::Helm::InstallCommand.new(
name: 'fluentd',
repository: repository,
version: VERSION,
rbac: cluster.platform_kubernetes_rbac?,
chart: chart,
files: files,
local_tiller_enabled: cluster.local_tiller_enabled?
)
end
def values
content_values.to_yaml
end
private
def has_at_least_one_log_enabled?
if !waf_log_enabled && !cilium_log_enabled
errors.add(:base, _("At least one logging option is required to be enabled"))
end
end
def content_values
YAML.load_file(chart_values_file).deep_merge!(specification)
end
def specification
{
"configMaps" => {
"output.conf" => output_configuration_content,
"general.conf" => general_configuration_content
}
}
end
def output_configuration_content
<<~EOF
<match kubernetes.**>
@type remote_syslog
@id out_kube_remote_syslog
host #{host}
port #{port}
program fluentd
hostname ${kubernetes_host}
protocol #{protocol}
packet_size 131072
<buffer kubernetes_host>
</buffer>
<format>
@type ltsv
</format>
</match>
EOF
end
def general_configuration_content
<<~EOF
<match fluent.**>
@type null
</match>
<source>
@type http
port 9880
bind 0.0.0.0
</source>
<source>
@type tail
@id in_tail_container_logs
path #{path_to_logs}
pos_file /var/log/fluentd-containers.log.pos
tag kubernetes.*
read_from_head true
<parse>
@type json
time_format %Y-%m-%dT%H:%M:%S.%NZ
</parse>
</source>
EOF
end
def path_to_logs
path = []
path << "/var/log/containers/*#{Ingress::MODSECURITY_LOG_CONTAINER_NAME}*.log" if waf_log_enabled
path << "/var/log/containers/*#{CILIUM_CONTAINER_NAME}*.log" if cilium_log_enabled
path.join(',')
end
end
end
end
|
