Kiu/VictoriaMetrics
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README.md: clarify upgrading and applying new config sections

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Aliaksandr Valialkin 2019-07-04 20:06:39 +03:00
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@ -61,10 +61,11 @@ Cluster version is available [here](https://github.com/VictoriaMetrics/VictoriaM
- [Third-party contributions](#third-party-contributions)
- [Prometheus setup](#prometheus-setup)
- [Grafana setup](#grafana-setup)
- [How to upgrade VictoriaMetrics?](#how-to-upgrade-victoriametrics)
- [How to apply new config to VictoriaMetrics?](#how-to-apply-new-config-to-victoriametrics)
- [How to send data from InfluxDB-compatible agents such as Telegraf?](#how-to-send-data-from-influxdb-compatible-agents-such-as-telegraf)
- [How to send data from Graphite-compatible agents such as StatsD?](#how-to-send-data-from-graphite-compatible-agents-such-as-statsd)
- [How to send data from OpenTSDB-compatible agents?](#how-to-send-data-from-opentsdb-compatible-agents)
- [How to apply new config / upgrade VictoriaMetrics?](#how-to-apply-new-config--upgrade-victoriametrics)
- [How to work with snapshots?](#how-to-work-with-snapshots)
- [How to delete time series?](#how-to-delete-time-series)
- [How to export time series?](#how-to-export-time-series)
@ -196,6 +197,28 @@ Then build graphs with the created datasource using [Prometheus query language](
VictoriaMetrics supports native PromQL and [extends it with useful features](ExtendedPromQL).
### How to upgrade VictoriaMetrics?
It is safe upgrading VictoriaMetrics to new versions unless [release notes](https://github.com/VictoriaMetrics/VictoriaMetrics/releases)
say otherwise. It is recommended performing regular upgrades to the latest version,
since it may contain important bug fixes, performance optimizations or new features.
Follow the following steps during the upgrade:
1) Send `SIGINT` signal to VictoriaMetrics process in order to gracefully stop it.
2) Wait until the process stops. This can take a few seconds.
3) Start the upgraded VictoriaMetrics.
### How to apply new config to VictoriaMetrics?
VictoriaMetrics must be restarted for applying new config:
1) Send `SIGINT` signal to VictoriaMetrics process in order to gracefully stop it.
2) Wait until the process stops. This can take a few seconds.
3) Start VictoriaMetrics with new config.
### How to send data from InfluxDB-compatible agents such as [Telegraf](https://www.influxdata.com/time-series-platform/telegraf/)?
Just use `http://<victoriametric-addr>:8428` url instead of InfluxDB url in agents' configs.
@ -317,15 +340,6 @@ The `/api/v1/export` endpoint should return the following response:
```
### How to apply new config / upgrade VictoriaMetrics?
VictoriaMetrics must be restarted in order to upgrade or apply new config:
1) Send `SIGINT` signal to VictoriaMetrics process in order to gracefully stop it.
2) Wait until the process stops. This can take a few seconds.
3) Start the upgraded VictoriaMetrics with new config.
### How to work with snapshots?
VictoriaMetrics is able to create [instant snapshots](https://medium.com/@valyala/how-victoriametrics-makes-instant-snapshots-for-multi-terabyte-time-series-data-e1f3fb0e0282)