[lxc-devel] [lxd/master] lxd/daemon: Bump NOFILE to max on startup

[stgraber on Github]

A non-text attachment was scrubbed...
Name: not available
Type: text/x-mailbox
Size: 354 bytes
Desc: not available
URL: <http://lists.linuxcontainers.org/pipermail/lxc-devel/attachments/20191012/aa4aaa6c/attachment.bin>
-------------- next part --------------
From c993b36cd3d682c2f55225c2c606e885d9d98769 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?St=C3=A9phane=20Graber?= <stgraber at ubuntu.com>
Date: Sat, 12 Oct 2019 13:42:40 -0400
Subject: [PATCH] lxd/daemon: Bump NOFILE to max on startup
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Stéphane Graber <stgraber at ubuntu.com>
---
 lxd/daemon.go | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/lxd/daemon.go b/lxd/daemon.go
index 7c7bba6573..552cf0cd61 100644
--- a/lxd/daemon.go
+++ b/lxd/daemon.go
@@ -570,6 +570,22 @@ func (d *Daemon) init() error {
 		return err
 	}
 
+	// Bump some kernel limits to avoid issues
+	for _, limit := range []int{unix.RLIMIT_NOFILE} {
+		rLimit := unix.Rlimit{}
+		err := unix.Getrlimit(limit, &rLimit)
+		if err != nil {
+			return err
+		}
+
+		rLimit.Cur = rLimit.Max
+
+		err = unix.Setrlimit(limit, &rLimit)
+		if err != nil {
+			return err
+		}
+	}
+
 	// Look for kernel features
 	logger.Infof("Kernel features:")
 	d.os.NetnsGetifaddrs = CanUseNetnsGetifaddrs()