# https://docs.fluentbit.io/manual/pipeline/filters/log_to_metrics

# INDENTATION WITH SPACES NOT TABS

[SERVICE]
    parsers_file parsers.conf
    log_file /var/log/fluent-bit.log

[INPUT]
    name cpu
    tag hw.cpu
    interval_sec 5

[INPUT]
    name mem
    tag hw.mem
    interval_sec 5

[INPUT]
    name disk
    tag hw.disk
    interval_sec 5

[INPUT]
    name netif
    tag hw.netif
    interval_sec 5
    interface eth0

# CPU
[FILTER]
    name               log_to_metrics
    match              hw.cpu
    tag                hw_metrics
    metric_mode        gauge
    metric_name        cpu_p
    value_field        cpu_p
    metric_description CPU usage %

# RAM
[FILTER]
    name               log_to_metrics
    match              hw.mem
    tag                hw_metrics
    metric_mode        gauge
    metric_name        mem.used
    value_field        Mem.used
    metric_description used RAM bytes

[FILTER]
    name               log_to_metrics
    match              hw.mem
    tag                hw_metrics
    metric_mode        gauge
    metric_name        mem.total
    value_field        Mem.total
    metric_description total RAM bytes

# DISK I/O
[FILTER]
    name               log_to_metrics
    match              hw.disk
    tag                hw_metrics
    metric_mode        gauge
    metric_name        write_size
    value_field        write_size
    metric_description disk output

[FILTER]
    name               log_to_metrics
    match              hw.disk
    tag                hw_metrics
    metric_mode        gauge
    metric_name        read_size
    value_field        read_size
    metric_description disk input

# TX/RX
[FILTER]
    name               log_to_metrics
    match              hw.netif
    tag                hw_metrics
    metric_mode        gauge
    metric_name        eth0.tx.bytes
    value_field        eth0.tx.bytes
    metric_description TX bytes

[FILTER]
    name               log_to_metrics
    match              hw.netif
    tag                hw_metrics
    metric_mode        gauge
    metric_name        eth0.rx.bytes
    value_field        eth0.rx.bytes
    metric_description RX bytes

[FILTER]
    name               log_to_metrics
    match              hw.netif
    tag                hw_metrics
    metric_mode        gauge
    metric_name        eth0.tx.packets
    value_field        eth0.tx.packets
    metric_description TX pkts

[FILTER]
    name               log_to_metrics
    match              hw.netif
    tag                hw_metrics
    metric_mode        gauge
    metric_name        eth0.rx.packets
    value_field        eth0.rx.packets
    metric_description RX pkts

[FILTER]
    name modify
    match hw.*
    add sensor flb@HOSTNAME-HERE

[OUTPUT]
    name file
    match hw_metrics
    path /var/log
    file fluent-bit.vmetrics.log

[OUTPUT]
    name prometheus_remote_write
    match hw_metrics

    host SERVER-ADDRESS-HERE
    port 443
    tls on
    tls.verify on
    http_user BASIC-AUTH-USER-HERE
    http_passwd BASIC-AUTH-PASSWORD-HERE

    # standalone
    uri /api/v1/write

    # cluster
    #uri /insert/0/prometheus/api/v1/write

    log_response_payload true
    add_label sensor flb@HOSTNAME-HERE