Kapacitor 是 InfluxData 公司开发的一个开源数据处理框架，专门用于处理和监控时间序列数据。它可以与 InfluxDB（时序数据库）一起使用，提供实时数据处理、告警、数据转换等功能。Kapacitor 允许用户创建自定义的数据处理任务，并使用 TICK 脚本语言来描述这些任务。
下面内容可以了解到：
- 如何查看运行中 Kapacitor 的配置内容；
- 如何将 Kapacitor 保存到文件中；
- Linux 中默认配置文件的位置；
- Kapacitor v1.7.1 版本的所哟配置项及默认值。
下面命令可以显示运行中的 Kapacitor 所有配置内容（自定义配置覆盖默认值后的）：
kapacitord config
下面命令可以将当前配置保存到 kapacitord.conf 文件中：
kapacitord config > /tmp/kapacitord.conf
想得到原始的默认配置，要是没修改过 /etc/kapacitor/kapacitor.conf 直接看这个就好。
下面为 Kapacitor v1.7.1 版本的原始配置与默认值：
hostname = "kapacitor"
data_dir = "/root/.kapacitor"
skip-config-overrides = false
default-retention-policy = ""
[alert]
persist-topics = true
topic-buffer-length = 5000
[auth]
enabled = false
cache-expiration = "0s"
bcrypt-cost = 0
meta-addr = ""
meta-username = ""
meta-password = ""
meta-internal-shared-secret = ""
meta-use-tls = false
meta-ca = ""
meta-cert = ""
meta-key = ""
meta-insecure-skip-verify = false
[http]
bind-address = ":9092"
auth-enabled = false
log-enabled = true
write-tracing = false
pprof-enabled = false
https-enabled = false
https-certificate = "/etc/ssl/kapacitor.pem"
https-private-key = ""
shutdown-timeout = "10s"
shared-secret = ""
[replay]
dir = "/root/.kapacitor/replay"
[storage]
boltdb = "/root/.kapacitor/kapacitor.db"
[task]
dir = "/root/.kapacitor/tasks"
snapshot-interval = "1m0s"
[fluxtask]
enabled = false
task-run-influxdb = ""
task-run-bucket = "kapacitor_fluxtask_logs"
task-run-org = ""
task-run-orgid = ""
task-run-measurement = "runs"
default-influxdb = ""
[load]
enabled = false
dir = "/root/.kapacitor/load"
[[influxdb]]
enabled = true
name = "default"
default = false
urls = ["http://localhost:8086"]
username = ""
password = ""
token = ""
http-shared-secret = false
ssl-ca = ""
ssl-cert = ""
ssl-key = ""
insecure-skip-verify = false
timeout = "0s"
disable-subscriptions = false
subscription-protocol = "http"
subscription-mode = "cluster"
kapacitor-hostname = ""
http-port = 0
udp-bind = ""
udp-buffer = 1000
udp-read-buffer = 0
startup-timeout = "5m0s"
subscriptions-sync-interval = "1m0s"
subscription-path = ""
compression = "gzip"
[influxdb.excluded-subscriptions]
_kapacitor = ["autogen"]
[logging]
file = "STDERR"
level = "DEBUG"
[config-override]
enabled = true
[tls]
min-version = ""
max-version = ""
[collectd]
enabled = false
bind-address = ":25826"
database = "collectd"
retention-policy = ""
batch-size = 5000
batch-pending = 10
batch-timeout = "10s"
read-buffer = 0
typesdb = "/usr/share/collectd/types.db"
security-level = "none"
auth-file = "/etc/collectd/auth_file"
parse-multivalue-plugin = "split"
[opentsdb]
enabled = false
bind-address = ":4242"
database = "opentsdb"
retention-policy = ""
consistency-level = "one"
tls-enabled = false
certificate = "/etc/ssl/influxdb.pem"
batch-size = 1000
batch-pending = 5
batch-timeout = "1s"
log-point-errors = true
[alerta]
enabled = false
url = ""
insecure-skip-verify = false
token = ""
token-prefix = ""
environment = ""
origin = ""
timeout = "0s"
[bigpanda]
enabled = false
global = false
app-key = ""
token = ""
state-changes-only = false
insecure-skip-verify = false
url = "https://api.bigpanda.io/data/v2/alerts"
auto-attributes = "tags,fields"
[[discord]]
enabled = false
default = true
workspace = ""
url = ""
timestamp = false
username = ""
avatar-url = ""
embed-title = ""
global = false
state-changes-only = false
ssl-ca = ""
ssl-cert = ""
ssl-key = ""
insecure-skip-verify = false
[hipchat]
enabled = false
url = ""
token = ""
room = ""
global = false
state-changes-only = false
[[kafka]]
enabled = false
id = "default"
timeout = "0s"
batch-size = 0
batch-timeout = "0s"
use-ssl = false
ssl-ca = ""
ssl-cert = ""
ssl-key = ""
insecure-skip-verify = false
sasl-username = ""
sasl-password = ""
sasl-mechanism = ""
sasl-gssapi-service-name = ""
sasl-gssapi-auth-type = ""
sasl-gssapi-disable-pafxfast = false
sasl-gssapi-kerberos-config-path = ""
sasl-gssapi-key-tab-path = ""
sasl-gssapi-realm = ""
sasl-access-token = ""
[[mqtt]]
enabled = false
name = "default"
default = false
url = ""
ssl-ca = ""
ssl-cert = ""
ssl-key = ""
insecure-skip-verify = false
client-id = ""
username = ""
password = ""
[opsgenie]
enabled = false
api-key = ""
url = "https://api.opsgenie.com/v1/json/alert"
recovery_url = "https://api.opsgenie.com/v1/json/alert/note"
global = false
[opsgenie2]
enabled = false
api-key = ""
url = "https://api.opsgenie.com/v2/alerts"
recovery_action = "notes"
global = false
details = false
[pagerduty]
enabled = false
url = "https://events.pagerduty.com/generic/2010-04-15/create_event.json"
service-key = ""
global = false
[pagerduty2]
enabled = false
url = "https://events.pagerduty.com/v2/enqueue"
routing-key = ""
global = false
[pushover]
enabled = false
token = ""
user-key = ""
url = "https://api.pushover.net/1/messages.json"
[[httppost]]
endpoint = "example"
url = "http://example.com"
alert-template = ""
alert-template-file = ""
row-template = ""
row-template-file = ""
[httppost.basic-auth]
username = ""
password = ""
[smtp]
enabled = false
host = "localhost"
port = 25
username = ""
password = ""
no-verify = false
global = false
state-changes-only = false
from = ""
idle-timeout = "30s"
[snmptrap]
enabled = false
addr = "localhost:162"
community = "kapacitor"
retries = 1
[sensu]
enabled = false
addr = ""
source = "Kapacitor"
[servicenow]
enabled = false
url = "https://instance.service-now.com/api/global/em/jsonv2"
source = ""
username = ""
password = ""
global = false
state-changes-only = false
[[slack]]
enabled = false
default = true
workspace = ""
url = ""
token = ""
channel = ""
username = "kapacitor"
icon-emoji = ""
global = false
state-changes-only = false
ssl-ca = ""
ssl-cert = ""
ssl-key = ""
insecure-skip-verify = false
[talk]
enabled = false
url = ""
author_name = ""
[teams]
enabled = false
channel-url = ""
global = false
state-changes-only = false
[telegram]
enabled = false
url = "https://api.telegram.org/bot"
token = ""
chat-id = ""
parse-mode = ""
disable-web-page-preview = false
disable-notification = false
global = false
state-changes-only = false
[victorops]
enabled = false
api-key = ""
routing-key = ""
url = "https://alert.victorops.com/integrations/generic/20131114/alert"
global = false
json-data = false
[zenoss]
enabled = false
url = "https://tenant.zenoss.io:8080/zport/dmd/evconsole_router"
username = ""
password = ""
action = "EventsRouter"
method = "add_event"
type = "rpc"
tid = 1
collector = "Kapacitor"
global = false
state-changes-only = false
[zenoss.severity-map]
OK = "Clear"
Info = "Info"
Warning = "Warning"
Critical = "Critical"
[reporting]
enabled = false
url = "https://usage.influxdata.com"
[stats]
enabled = true
stats-interval = "10s"
database = "_kapacitor"
retention-policy = "autogen"
timing-sample-rate = 0.1
timing-movavg-size = 1000
[udf]
[deadman]
interval = "10s"
threshold = 0.0
id = "{{ .Group }}:NODE_NAME for task '{{ .TaskName }}'"
message = "{{ .ID }} is {{ if eq .Level \"OK\" }}alive{{ else }}dead{{ end }}: {{ index .Fields \"emitted\" | printf \"%0.3f\" }} points/INTERVAL."
global = false
参考资料：
