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Consolidate sysctl commands for kubelet

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These commands are important enough to be in the Kubelet itself.
By default, Ubuntu 14.04 and Debian Jessie have these set to 200 and
20000. Without this setting, nodes are limited in the number of
containers that they can start.
This commit is contained in:
Christopher M. Luciano
2017-03-13 13:43:31 -04:00
parent 8705dbaa82
commit bafabcbb44
3 changed files with 7 additions and 38 deletions
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5
pkg/util/sysctl/sysctl.go
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@@ -29,12 +29,17 @@ const (
VmPanicOnOOM = "vm/panic_on_oom"
KernelPanic = "kernel/panic"
KernelPanicOnOops = "kernel/panic_on_oops"
RootMaxKeys = "kernel/keys/root_maxkeys"
RootMaxBytes = "kernel/keys/root_maxbytes"
VmOvercommitMemoryAlways = 1 // kernel performs no memory over-commit handling
VmPanicOnOOMInvokeOOMKiller = 0 // kernel calls the oom_killer function when OOM occurs
KernelPanicOnOopsAlways = 1 // kernel panics on kernel oops
KernelPanicRebootTimeout = 10 // seconds after a panic for the kernel to reboot
RootMaxKeysSetting = 1000000 // Needed since docker creates a new key per container
RootMaxBytesSetting = RootMaxKeysSetting * 25 // allocate 25 bytes per key * number of MaxKeys
)
// An injectable interface for running sysctl commands.