mirror of
https://github.com/coredns/coredns.git
synced 2026-04-05 19:55:32 -04:00
73 lines
1.4 KiB
Groff
73 lines
1.4 KiB
Groff
.\" Generated by Mmark Markdown Processer - mmark.miek.nl
|
|
.TH "COREDNS-GRPC_SERVER" 7 "March 2026" "CoreDNS" "CoreDNS Plugins"
|
|
|
|
.SH "NAME"
|
|
.PP
|
|
\fIgrpc_server\fP - configures DNS-over-gRPC server options.
|
|
|
|
.SH "DESCRIPTION"
|
|
.PP
|
|
The \fIgrpc_server\fP plugin allows you to configure parameters for the DNS-over-gRPC server to fine-tune the security posture and performance of the server.
|
|
|
|
.PP
|
|
This plugin can only be used once per gRPC listener block.
|
|
|
|
.SH "SYNTAX"
|
|
.PP
|
|
.RS
|
|
|
|
.nf
|
|
grpc\_server {
|
|
max\_streams POSITIVE\_INTEGER
|
|
max\_connections POSITIVE\_INTEGER
|
|
}
|
|
|
|
.fi
|
|
.RE
|
|
|
|
.IP \(bu 4
|
|
\fB\fCmax_streams\fR limits the number of concurrent gRPC streams per connection. This helps prevent unbounded streams on a single connection, exhausting server resources. The default value is 256 if not specified. Set to 0 for unbounded.
|
|
.IP \(bu 4
|
|
\fB\fCmax_connections\fR limits the number of concurrent TCP connections to the gRPC server. The default value is 200 if not specified. Set to 0 for unbounded.
|
|
|
|
|
|
.SH "EXAMPLES"
|
|
.PP
|
|
Set custom limits for maximum streams and connections:
|
|
|
|
.PP
|
|
.RS
|
|
|
|
.nf
|
|
grpc://.:8053 {
|
|
tls cert.pem key.pem
|
|
grpc\_server {
|
|
max\_streams 50
|
|
max\_connections 100
|
|
}
|
|
whoami
|
|
}
|
|
|
|
.fi
|
|
.RE
|
|
|
|
.PP
|
|
Set values to 0 for unbounded, matching CoreDNS behaviour before v1.14.0:
|
|
|
|
.PP
|
|
.RS
|
|
|
|
.nf
|
|
grpc://.:8053 {
|
|
tls cert.pem key.pem
|
|
grpc\_server {
|
|
max\_streams 0
|
|
max\_connections 0
|
|
}
|
|
whoami
|
|
}
|
|
|
|
.fi
|
|
.RE
|
|
|