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query: document the dnssrvnoa option #1551

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Sep 21, 2019
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query: document the dnssrvnoa option #1551

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10 changes: 8 additions & 2 deletions docs/service-discovery.md
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Expand Up @@ -90,12 +90,18 @@ An example using this lookup with a static flag:
--store=dns+stores.thanos.mycompany.org:9090
```

* `dnssrv+` - the domain name after this prefix will be looked up as a SRV query. You do not need to specify a port as the
one from the query results will be used. An example:
* `dnssrv+` - the domain name after this prefix will be looked up as a SRV query, and then each SRV record will be looked up as an A/AAAA query. You do not need to specify a port as the one from the query results will be used. An example:

```
--store=dnssrv+_thanosstores._tcp.mycompany.org
```

* `dnssrvnoa+` - the domain name after this prefix will be looked up as a SRV query, with no A/AAAA lookup made after that. Similar to the `dnssrv+` case, you do not need to specify a port. An example:

```
--store=dnssrvnoa+_thanosstores._tcp.mycompany.org
```

The default interval between DNS lookups is 30s. You can change it using the `store.sd-dns-interval` flag for `StoreAPI`
configuration in `Thanos Query`, or `query.sd-dns-interval` for `QueryAPI` configuration in `Thanos Rule`.

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