Add systemd ulimit override function and set an override for NOFILE
This sets our default ulimit NOFILE to 2048, which is double what we
set things like mysql'd max_connections to.
Change-Id: I5126bed1e6b9f8c64db00eae4151ac61e47b1bf8
diff --git a/functions b/functions
index f842f63..bc2d26b 100644
--- a/functions
+++ b/functions
@@ -720,6 +720,22 @@
}
+# Set a systemd system override
+#
+# This sets a system-side override in system.conf. A per-service
+# override would be /etc/systemd/system/${service}.service/override.conf
+function set_systemd_override {
+ local key="$1"
+ local value="$2"
+
+ local sysconf="/etc/systemd/system.conf"
+ iniset -sudo "${sysconf}" "Manager" "$key" "$value"
+ echo "Set systemd system override for ${key}=${value}"
+
+ sudo systemctl daemon-reload
+}
+
+
# Restore xtrace
$_XTRACE_FUNCTIONS
diff --git a/stack.sh b/stack.sh
index d6837ef..e83eaea 100755
--- a/stack.sh
+++ b/stack.sh
@@ -765,6 +765,9 @@
# Phase: pre-install
run_phase stack pre-install
+# NOTE(danms): Set global limits before installing anything
+set_systemd_override DefaultLimitNOFILE ${ULIMIT_NOFILE}
+
install_rpc_backend
restart_rpc_backend
diff --git a/stackrc b/stackrc
index 35856ca..ea1bcdf 100644
--- a/stackrc
+++ b/stackrc
@@ -925,6 +925,9 @@
# ``LOGDIR`` is always set at this point so it is not useful as a 'enable' for service logs
# ``SCREEN_LOGDIR`` may be set, it is useful to enable the compat symlinks
+# System-wide ulimit file descriptors override
+ULIMIT_NOFILE=${ULIMIT_NOFILE:-2048}
+
# Local variables:
# mode: shell-script
# End: