mirror of
https://github.com/moby/moby.git
synced 2022-11-09 12:21:53 -05:00
4abd54d419
On linux systems bump up gc_thresholds so to lower the probability of running with neighbor table overflow issues Signed-off-by: Flavio Crisciani <flavio.crisciani@docker.com>
30 lines
822 B
Go
30 lines
822 B
Go
package overlay
|
|
|
|
import (
|
|
"io/ioutil"
|
|
"path"
|
|
"strings"
|
|
|
|
"github.com/Sirupsen/logrus"
|
|
)
|
|
|
|
var sysctlConf = map[string]string{
|
|
"net.ipv4.neigh.default.gc_thresh1": "8192",
|
|
"net.ipv4.neigh.default.gc_thresh2": "49152",
|
|
"net.ipv4.neigh.default.gc_thresh3": "65536",
|
|
}
|
|
|
|
// writeSystemProperty writes the value to a path under /proc/sys as determined from the key.
|
|
// For e.g. net.ipv4.ip_forward translated to /proc/sys/net/ipv4/ip_forward.
|
|
func writeSystemProperty(key, value string) error {
|
|
keyPath := strings.Replace(key, ".", "/", -1)
|
|
return ioutil.WriteFile(path.Join("/proc/sys", keyPath), []byte(value), 0644)
|
|
}
|
|
|
|
func applyOStweaks() {
|
|
for k, v := range sysctlConf {
|
|
if err := writeSystemProperty(k, v); err != nil {
|
|
logrus.Errorf("error setting the kernel parameter %s = %s, err: %s", k, v, err)
|
|
}
|
|
}
|
|
}
|