2017-05-31 16:46:14 -07:00
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package overlay
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import (
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"io/ioutil"
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"path"
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"strings"
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2017-07-26 14:18:31 -07:00
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"github.com/sirupsen/logrus"
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2017-05-31 16:46:14 -07:00
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)
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var sysctlConf = map[string]string{
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"net.ipv4.neigh.default.gc_thresh1": "8192",
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"net.ipv4.neigh.default.gc_thresh2": "49152",
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"net.ipv4.neigh.default.gc_thresh3": "65536",
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}
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// writeSystemProperty writes the value to a path under /proc/sys as determined from the key.
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// For e.g. net.ipv4.ip_forward translated to /proc/sys/net/ipv4/ip_forward.
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func writeSystemProperty(key, value string) error {
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keyPath := strings.Replace(key, ".", "/", -1)
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return ioutil.WriteFile(path.Join("/proc/sys", keyPath), []byte(value), 0644)
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}
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func applyOStweaks() {
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for k, v := range sysctlConf {
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if err := writeSystemProperty(k, v); err != nil {
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logrus.Errorf("error setting the kernel parameter %s = %s, err: %s", k, v, err)
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}
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}
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}
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