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* core: upgrade Go requirement to 1.26.0 As golang 1.27 has been released, this PR - Bump Go version requirement to 1.26.0 - Update Go build version to 1.27.0 This is also for solving the issue encountered in 8092 of k8s update Signed-off-by: Yong Tang <yong.tang.github@outlook.com> * Bump golang ci Signed-off-by: Yong Tang <yong.tang.github@outlook.com> * Fix Signed-off-by: Yong Tang <yong.tang.github@outlook.com> * Fix Signed-off-by: Yong Tang <yong.tang.github@outlook.com> * Fix Signed-off-by: Yong Tang <yong.tang.github@outlook.com> * Migrate faillint to forbidigo, as failint has not bee updated for more than a year Signed-off-by: Yong Tang <yong.tang.github@outlook.com> --------- Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
grpc_server
Name
grpc_server - configures DNS-over-gRPC server options.
Description
The grpc_server plugin allows you to configure parameters for the DNS-over-gRPC server to fine-tune the security posture and performance of the server.
This plugin can only be used once per gRPC listener block.
Syntax
grpc_server {
max_streams POSITIVE_INTEGER
max_connections POSITIVE_INTEGER
}
max_streamslimits 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.max_connectionslimits the number of concurrent TCP connections to the gRPC server. The default value is 200 if not specified. Set to 0 for unbounded.
Examples
Set custom limits for maximum streams and connections:
grpc://.:8053 {
tls cert.pem key.pem
grpc_server {
max_streams 50
max_connections 100
}
whoami
}
Set values to 0 for unbounded, matching CoreDNS behaviour before v1.14.0:
grpc://.:8053 {
tls cert.pem key.pem
grpc_server {
max_streams 0
max_connections 0
}
whoami
}