add link for rec and slave

diff --git a/rec b/rec
new file mode 120000 (symlink)
index 0000000..82877bd
--- /dev/null
+++ b/rec
@@ -0,0 +1 @@
+master/opt/cluster/rec
\ No newline at end of file

diff --git a/slave b/slave
new file mode 120000 (symlink)
index 0000000..9b3f469
--- /dev/null
+++ b/slave
@@ -0,0 +1 @@
+master/opt/cluster/slave
\ No newline at end of file