k0: enable fstrim, lower gc thresh for kubelet
fstrim is nice as it might prevent us from killing SSDs so fast.
A lower GC threshold for kubelet is nice as we run non-kubelet services
on these nodes, and they need their space. Notably, Ceph's mons tend to
be extremely claustrophobic, firing alerts at 70% disk usage or so.
Change-Id: I94c1787e62f82a02f107d04a87575327d3d79c01
Reviewed-on: https://gerrit.hackerspace.pl/c/hscloud/+/1724
Reviewed-by: implr <implr@hackerspace.pl>
diff --git a/cluster/machines/modules/base.nix b/cluster/machines/modules/base.nix
index 9740d1d..9ad3684 100644
--- a/cluster/machines/modules/base.nix
+++ b/cluster/machines/modules/base.nix
@@ -114,6 +114,13 @@
# Enable the OpenSSH daemon.
services.openssh.enable = true;
+
+ # Enable fstrim, as we run / on SSDs everywhere.
+ services.fstrim = {
+ enable = true;
+ interval = "daily";
+ };
+
users.users.root.openssh.authorizedKeys.keys = [
"ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDD4VJXAXEHEXZk2dxNwehneuJcEGkfXG/U7z4fO79vDVIENdedtXQUyLyhZJc5RTEfHhQj66FwIqzl7mzBHd9x9PuDp6QAYXrkVNMj48s6JXqZqBvF6H/weRqFMf4a2TZv+hG8D0kpvmLheCwWAVRls7Jofnp/My+yDd57GMdsbG/yFEf6WPMiOnA7hxdSJSVihCsCSw2p8PD4GhBe8CVt7xIuinhutjm9zYBjV78NT8acjDUfJh0B1ODTjs7nuW1CC4jybSe2j/OU3Yczj4AxRxBNWuFxUq+jBo9BfpbKLh+Tt7re+zBkaicM77KM/oV6943JJxgHNBBOsv9scZE7 q3k@amnesia"
"ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIG599UildOrAq+LIOQjKqtGMwjgjIxozI1jtQQRKHtCP q3k@mimeomia"