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-rw-r--r--nixpkgs/nixos/modules/services/system/nscd.conf52
1 files changed, 52 insertions, 0 deletions
diff --git a/nixpkgs/nixos/modules/services/system/nscd.conf b/nixpkgs/nixos/modules/services/system/nscd.conf
new file mode 100644
index 000000000000..603a5d01acce
--- /dev/null
+++ b/nixpkgs/nixos/modules/services/system/nscd.conf
@@ -0,0 +1,52 @@
+# We basically use nscd as a proxy for forwarding nss requests to appropriate
+# nss modules, as we run nscd with LD_LIBRARY_PATH set to the directory
+# containing all such modules
+# Note that we can not use `enable-cache no` As this will actually cause nscd
+# to just reject the nss requests it receives, which then causes glibc to
+# fallback to trying to handle the request by itself. Which won't work as glibc
+# is not aware of the path in which the nss modules live.  As a workaround, we
+# have `enable-cache yes` with an explicit ttl of 0
+server-user             nscd
+threads                 1
+paranoia                no
+debug-level             0
+
+enable-cache            passwd          yes
+positive-time-to-live   passwd          0
+negative-time-to-live   passwd          0
+suggested-size          passwd          211
+check-files             passwd          yes
+persistent              passwd          no
+shared                  passwd          yes
+
+enable-cache            group           yes
+positive-time-to-live   group           0
+negative-time-to-live   group           0
+suggested-size          group           211
+check-files             group           yes
+persistent              group           no
+shared                  group           yes
+
+enable-cache            netgroup        yes
+positive-time-to-live   netgroup        0
+negative-time-to-live   netgroup        0
+suggested-size          netgroup        211
+check-files             netgroup        yes
+persistent              netgroup        no
+shared                  netgroup        yes
+
+enable-cache            hosts           yes
+positive-time-to-live   hosts           600
+negative-time-to-live   hosts           0
+suggested-size          hosts           211
+check-files             hosts           yes
+persistent              hosts           no
+shared                  hosts           yes
+
+enable-cache            services        yes
+positive-time-to-live   services        0
+negative-time-to-live   services        0
+suggested-size          services        211
+check-files             services        yes
+persistent              services        no
+shared                  services        yes