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cluster_template.go
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cluster_template.go
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package generator
var ClusterTemplate = `{{ if .clusterTarget.CurrentTarget }}
<source>
@type tail
path /var/lib/rancher/rke/log/*.log
pos_file /fluentd/log/fluentd-rke-logging.pos
time_format %Y-%m-%dT%H:%M:%S
tag rke.*
format json
read_from_head true
</source>
<filter rke.**>
@type record_transformer
enable_ruby true
<record>
tag ${tag}
log_type k8s_infrastructure_container
driver rke
component ${tag_suffix[6].split("_")[0]}
container_id ${tag_suffix[6].split(".")[0]}
</record>
</filter>
<source>
@type tail
path /var/log/containers/*.log
pos_file /fluentd/log/fluentd-cluster-logging.pos
time_format %Y-%m-%dT%H:%M:%S
tag cluster.*
format json
read_from_head true
</source>
<filter cluster.**>
@type kubernetes_metadata
merge_json_log true
preserve_json_log true
</filter>
<filter cluster.**>
@type record_transformer
<record>
tag ${tag}
log_type k8s_normal_container
{{range $k, $val := .clusterTarget.OutputTags -}}
{{$k}} {{$val}}
{{end -}}
</record>
</filter>
{{ if eq .clusterTarget.CurrentTarget "syslog"}}
{{ if .clusterTarget.SyslogConfig.Token}}
<filter cluster.** rke.** cluster-custom.**>
@type record_transformer
<record>
tag ${tag} {{.clusterTarget.SyslogConfig.Token}}
</record>
</filter>
{{end -}}
{{end -}}
<match cluster.** rke.** cluster-custom.**>
{{ if eq .clusterTarget.CurrentTarget "embedded"}}
@type elasticsearch
include_tag_key true
hosts "elasticsearch.cattle-logging:9200"
logstash_prefix {{.clusterTarget.EmbeddedConfig.IndexPrefix}}
logstash_format true
logstash_dateformat {{.clusterTarget.WrapEmbedded.DateFormat}}
type_name "container_log"
{{end -}}
{{ if eq .clusterTarget.CurrentTarget "elasticsearch"}}
@type elasticsearch
include_tag_key true
{{ if and .clusterTarget.ElasticsearchConfig.AuthUserName .clusterTarget.ElasticsearchConfig.AuthPassword}}
hosts {{.clusterTarget.WrapElasticsearch.Scheme}}://{{.clusterTarget.ElasticsearchConfig.AuthUserName}}:{{.clusterTarget.ElasticsearchConfig.AuthPassword}}@{{.clusterTarget.WrapElasticsearch.Host}}
{{else -}}
hosts {{.clusterTarget.ElasticsearchConfig.Endpoint}}
{{end -}}
logstash_format true
logstash_prefix "{{.clusterTarget.ElasticsearchConfig.IndexPrefix}}"
logstash_dateformat {{.clusterTarget.WrapElasticsearch.DateFormat}}
type_name "container_log"
{{ if eq .clusterTarget.WrapElasticsearch.Scheme "https"}}
ssl_verify {{ .clusterTarget.ElasticsearchConfig.SSLVerify }}
{{ if .clusterTarget.ElasticsearchConfig.Certificate }}
ca_file /fluentd/etc/ssl/cluster_{{.clusterName}}_ca.pem
{{end -}}
{{ if and .clusterTarget.ElasticsearchConfig.ClientCert .clusterTarget.ElasticsearchConfig.ClientKey}}
client_cert /fluentd/etc/ssl/cluster_{{.clusterName}}_client-cert.pem
client_key /fluentd/etc/ssl/cluster_{{.clusterName}}_client-key.pem
{{end -}}
{{ if .clusterTarget.ElasticsearchConfig.ClientKeyPass}}
client_key_pass {{.clusterTarget.ElasticsearchConfig.ClientKeyPass}}
{{end -}}
{{end -}}
{{end -}}
{{ if eq .clusterTarget.CurrentTarget "splunk"}}
@type splunk_hec
host {{.clusterTarget.WrapSplunk.Host}}
port {{.clusterTarget.WrapSplunk.Port}}
token {{.clusterTarget.SplunkConfig.Token}}
{{ if .clusterTarget.SplunkConfig.Source}}
sourcetype {{.clusterTarget.SplunkConfig.Source}}
{{end -}}
{{ if .clusterTarget.SplunkConfig.Index}}
default_index {{ .clusterTarget.SplunkConfig.Index }}
{{end -}}
{{ if eq .clusterTarget.WrapSplunk.Scheme "https"}}
use_ssl true
ssl_verify {{ .clusterTarget.SplunkConfig.SSLVerify }}
{{ if .clusterTarget.SplunkConfig.Certificate }}
ca_file /fluentd/etc/ssl/cluster_{{.clusterName}}_ca.pem
{{end -}}
{{ if and .clusterTarget.SplunkConfig.ClientCert .clusterTarget.SplunkConfig.ClientKey}}
client_cert /fluentd/etc/ssl/cluster_{{.clusterName}}_client-cert.pem
client_key /fluentd/etc/ssl/cluster_{{.clusterName}}_client-key.pem
{{end -}}
{{ if .clusterTarget.SplunkConfig.ClientKeyPass}}
client_key_pass {{ .clusterTarget.SplunkConfig.ClientKeyPass }}
{{end -}}
{{end -}}
{{end -}}
{{ if eq .clusterTarget.CurrentTarget "kafka"}}
@type kafka_buffered
{{ if .clusterTarget.KafkaConfig.ZookeeperEndpoint }}
zookeeper {{.clusterTarget.WrapKafka.Zookeeper}}
{{else}}
brokers {{.clusterTarget.WrapKafka.Brokers}}
{{end}}
default_topic {{.clusterTarget.KafkaConfig.Topic}}
output_data_type "json"
output_include_tag true
output_include_time true
{{ if .clusterTarget.KafkaConfig.Certificate }}
ssl_ca_cert /fluentd/etc/ssl/cluster_{{.clusterName}}_ca.pem
{{end}}
{{ if and .clusterTarget.KafkaConfig.ClientCert .clusterTarget.KafkaConfig.ClientKey}}
ssl_client_cert /fluentd/etc/ssl/cluster_{{.clusterName}}_client-cert.pem
ssl_client_cert_key /fluentd/etc/ssl/cluster_{{.clusterName}}_client-key.pem
{{ end -}}
max_send_retries 3
{{end -}}
{{ if eq .clusterTarget.CurrentTarget "syslog"}}
@type remote_syslog
host {{.clusterTarget.WrapSyslog.Host}}
port {{.clusterTarget.WrapSyslog.Port}}
severity {{.clusterTarget.SyslogConfig.Severity}}
program {{.clusterTarget.SyslogConfig.Program}}
protocol {{.clusterTarget.SyslogConfig.Protocol}}
{{ if eq .clusterTarget.SyslogConfig.SSLVerify true}}
verify_mode 1
{{else -}}
verify_mode 0
{{end -}}
{{ if .clusterTarget.SyslogConfig.Certificate }}
tls true
ca_file /fluentd/etc/ssl/cluster_{{.clusterName}}_ca.pem
{{end}}
{{ if and .clusterTarget.SyslogConfig.ClientCert .clusterTarget.SyslogConfig.ClientKey}}
client_cert /fluentd/etc/ssl/cluster_{{.clusterName}}_client-cert.pem
client_cert_key /fluentd/etc/ssl/cluster_{{.clusterName}}_client-key.pem
{{ end -}}
{{end -}}
<buffer>
@type file
path /fluentd/etc/buffer/cluster.buffer
flush_interval {{.clusterTarget.OutputFlushInterval}}s
{{ if eq .clusterTarget.CurrentTarget "splunk"}}
chunk_limit_size 8m
{{end -}}
</buffer>
disable_retry_limit
num_threads 8
slow_flush_log_threshold 40.0
</match>
{{end -}}
`