我尝试设置mosquitto、telegraf和influxdb的工具链。这三个都使用apt安装在树莓派上。为了调试，我使用了 telegraf 的文件输出。
当 pi 启动时，此连接不起作用。如果从外部订阅，Mosquito 就可以工作。telegraf 收集系统和磁盘信息。但是 telegraf 不收集 mqtt 信息。
当我重新启动蚊子喜欢
sudo service mosquitto stop
mosquitto -v
连接正常。
当我重新启动蚊子喜欢
sudo service mosquitto stop
sudo service mosquitto start
它再次不起作用。
有什么区别？
我刚刚升级到最新版本，但这并没有改变任何东西。
- 蚊子 1.5.7
- 电报 1.15.3
- 涌入数据库 1.8.2
mosquitto 的启动信息很好：
Sep 14 21:34:30 raspberrypi systemd[1]: Starting Mosquitto MQTT v3.1/v3.1.1 Broker...
Sep 14 21:34:31 raspberrypi systemd[1]: Started Mosquitto MQTT v3.1/v3.1.1 Broker.
来自 telegraf 的引导消息报告连接到 mosquitto，尽管 influxdb 存在一些问题
Sep 14 21:34:54 raspberrypi telegraf[401]: 2020-09-14T19:34:54Z I! Starting Telegraf 1.15.3
Sep 14 21:34:54 raspberrypi influxd[407]: ts=2020-09-14T19:34:54.300652Z lvl=info msg="Opened shard" log_id=0PFXdCuW000 service=store trace_id=0PFXdEbG000 op_name=tsdb_open index_version=inmem path=/var/lib/influxdb/data/base/autogen/16 duration=598.507ms
Sep 14 21:34:54 raspberrypi influxd[407]: ts=2020-09-14T19:34:54.300796Z lvl=info msg="Opened shard" log_id=0PFXdCuW000 service=store trace_id=0PFXdEbG000 op_name=tsdb_open index_version=inmem path=/var/lib/influxdb/data/base/autogen/152 duration=675.711ms
Sep 14 21:34:54 raspberrypi influxd[407]: ts=2020-09-14T19:34:54.366628Z lvl=info msg="Opened file" log_id=0PFXdCuW000 engine=tsm1 service=filestore path=/var/lib/influxdb/data/base/autogen/2/000000001-000000001.tsm id=0 duration=11.324ms
Sep 14 21:34:54 raspberrypi influxd[407]: ts=2020-09-14T19:34:54.374469Z lvl=info msg="Opened file" log_id=0PFXdCuW000 engine=tsm1 service=filestore path=/var/lib/influxdb/data/base/autogen/24/000000319-000000002.tsm id=0 duration=22.091ms
Sep 14 21:34:54 raspberrypi telegraf[401]: 2020-09-14T19:34:54Z I! Loaded inputs: system mqtt_consumer disk
Sep 14 21:34:54 raspberrypi telegraf[401]: 2020-09-14T19:34:54Z I! Loaded aggregators:
Sep 14 21:34:54 raspberrypi telegraf[401]: 2020-09-14T19:34:54Z I! Loaded processors:
Sep 14 21:34:54 raspberrypi telegraf[401]: 2020-09-14T19:34:54Z I! Loaded outputs: influxdb file
Sep 14 21:34:54 raspberrypi telegraf[401]: 2020-09-14T19:34:54Z I! Tags enabled: host=raspberrypi
Sep 14 21:34:54 raspberrypi telegraf[401]: 2020-09-14T19:34:54Z I! [agent] Config: Interval:10s, Quiet:false, Hostname:"raspberrypi", Flush Interval:10s
Sep 14 21:34:54 raspberrypi influxd[407]: ts=2020-09-14T19:34:54.489708Z lvl=info msg="Opened shard" log_id=0PFXdCuW000 service=store trace_id=0PFXdEbG000 op_name=tsdb_open index_version=inmem path=/var/lib/influxdb/data/base/autogen/2 duration=188.821ms
Sep 14 21:34:54 raspberrypi telegraf[401]: 2020-09-14T19:34:54Z I! [inputs.mqtt_consumer] Connected [tcp://localhost:1883]
Sep 14 21:34:54 raspberrypi influxd[407]: ts=2020-09-14T19:34:54.548591Z lvl=info msg="Opened shard" log_id=0PFXdCuW000 service=store trace_id=0PFXdEbG000 op_name=tsdb_open index_version=inmem path=/var/lib/influxdb/data/base/autogen/24 duration=239.663ms
Sep 14 21:34:54 raspberrypi influxd[407]: ts=2020-09-14T19:34:54.552787Z lvl=info msg="Opened file" log_id=0PFXdCuW000 engine=tsm1 service=filestore path=/var/lib/influxdb/data/base/autogen/32/000000271-000000002.tsm id=0 duration=22.821ms
Sep 14 21:34:54 raspberrypi influxd[407]: ts=2020-09-14T19:34:54.788229Z lvl=info msg="Opened file" log_id=0PFXdCuW000 engine=tsm1 service=filestore path=/var/lib/influxdb/data/base/autogen/62/000000006-000000002.tsm id=0 duration=203.005ms
Sep 14 21:34:54 raspberrypi influxd[407]: ts=2020-09-14T19:34:54.842928Z lvl=info msg="Opened shard" log_id=0PFXdCuW000 service=store trace_id=0PFXdEbG000 op_name=tsdb_open index_version=inmem path=/var/lib/influxdb/data/base/autogen/32 duration=352.965ms
Sep 14 21:34:56 raspberrypi influxd[407]: ts=2020-09-14T19:34:56.503706Z lvl=info msg="Opened file" log_id=0PFXdCuW000 engine=tsm1 service=filestore path=/var/lib/influxdb/data/base/autogen/40/000000004-000000002.tsm id=0 duration=71.762ms
Sep 14 21:34:58 raspberrypi systemd[1]: systemd-fsckd.service: Succeeded.
Sep 14 21:34:59 raspberrypi influxd[407]: ts=2020-09-14T19:34:59.734290Z lvl=info msg="Opened shard" log_id=0PFXdCuW000 service=store trace_id=0PFXdEbG000 op_name=tsdb_open index_version=inmem path=/var/lib/influxdb/data/base/autogen/62 duration=5185.491ms
Sep 14 21:34:59 raspberrypi influxd[407]: ts=2020-09-14T19:34:59.762419Z lvl=info msg="Opened file" log_id=0PFXdCuW000 engine=tsm1 service=filestore path=/var/lib/influxdb/data/base/autogen/41/000000001-000000001.tsm id=0 duration=8.874ms
Sep 14 21:34:59 raspberrypi influxd[407]: ts=2020-09-14T19:34:59.785965Z lvl=info msg="Opened shard" log_id=0PFXdCuW000 service=store trace_id=0PFXdEbG000 op_name=tsdb_open index_version=inmem path=/var/lib/influxdb/data/base/autogen/40 duration=4942.818ms
相关部分 oc telegraf.conf 是
[[outputs.influxdb]]
urls = ["http://127.0.0.1:8086"]
database = "base"
skip_database_creation = true
username = "telegraf"
password = "****"
content_encoding = "identity"
[[outputs.file]]
files = ["stdout", "/tmp/metrics.out"]
[[inputs.mqtt_consumer]]
servers = ["tcp://localhost:1883"]
topics = ["home/garden/+"]
topic_tag = "mqtt_topic"
qos = 1
max_undelivered_messages = 1
persistent_session = true
client_id = "lord_of_the_pis"
data_format = "json"