VictoriaMetrics/lib/netutil/tcpdialer_linux.go

package netutil

import (
	"golang.org/x/sys/unix"
	"syscall"
	"time"
)

func setTCPUserTimeout(fd uintptr, timeout time.Duration) error {
	return syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, unix.TCP_USER_TIMEOUT, int(timeout.Milliseconds()))
}
Add `vmstorageUserTimeout` flags to configure TCP user timeout (Linux) (#4423) `TCP_USER_TIMEOUT` (since Linux 2.6.37) specifies the maximum amount of time that transmitted data may remain unacknowledged before TCP will forcibly close the connection and return `ETIMEDOUT` to the application. Setting a low TCP user timeout allows RPC connections quickly reroute around unavailable storage nodes during network interruptions. 2023-08-29 11:46:39 +02:00			`package netutil`

			`import (`
			`"golang.org/x/sys/unix"`
			`"syscall"`
			`"time"`
			`)`

			`func setTCPUserTimeout(fd uintptr, timeout time.Duration) error {`
app/{vminsert,vmselect}: follow-up after 2b7b3293c1119cc993143c34f0945504cdb35575 - Document the change at docs/CHANGELOG.md - Set the default value for -vmstorageUserTimeout to 3 seconds. This is much better than the 0 value, which means that TCP connection to unreachable vmstorage could block for up to 16 minutes. - Document -vmstorageUserTimeout at docs/Cluster-VictoriaMetrics.md 2023-08-29 12:09:24 +02:00			`return syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, unix.TCP_USER_TIMEOUT, int(timeout.Milliseconds()))`
Add `vmstorageUserTimeout` flags to configure TCP user timeout (Linux) (#4423) `TCP_USER_TIMEOUT` (since Linux 2.6.37) specifies the maximum amount of time that transmitted data may remain unacknowledged before TCP will forcibly close the connection and return `ETIMEDOUT` to the application. Setting a low TCP user timeout allows RPC connections quickly reroute around unavailable storage nodes during network interruptions. 2023-08-29 11:46:39 +02:00			`}`