Merge pull request #15290 from ZJU-SEL/enhance-lsb_release

docs/getting-started-guides/docker-multinode/master.sh

@@ -75,6 +75,15 @@ detect_lsb() {
     fi
 
     lsb_dist="$(echo ${lsb_dist} | tr '[:upper:]' '[:lower:]')"
+
+    case "${lsb_dist}" in
+        amzn|centos|debian|ubuntu)
+            ;;
+        *)
+            echo "Error: We currently only support ubuntu|debian|amzn|centos."
+            exit 1
+            ;;
+    esac
 }
 
 
@@ -106,7 +115,7 @@ start_k8s(){
     source subnet.env
 
     # Configure docker net settings, then restart it
-    case "$lsb_dist" in
+    case "${lsb_dist}" in
         amzn)
             DOCKER_CONF="/etc/sysconfig/docker"
             echo "OPTIONS=\"\$OPTIONS --mtu=${FLANNEL_MTU} --bip=${FLANNEL_SUBNET}\"" | sudo tee -a ${DOCKER_CONF}
@@ -129,7 +138,7 @@ start_k8s(){
             apt-get install bridge-utils && brctl delbr docker0 && service docker restart
             ;;
         *)
-            echo "Unsupported operations system $lsb_dist"
+            echo "Unsupported operations system ${lsb_dist}"
             exit 1
             ;;
     esac

docs/getting-started-guides/docker-multinode/worker.sh

@@ -84,6 +84,15 @@ detect_lsb() {
     fi
 
     lsb_dist="$(echo ${lsb_dist} | tr '[:upper:]' '[:lower:]')"
+
+    case "${lsb_dist}" in
+        amzn|centos|debian|ubuntu)
+            ;;
+        *)
+            echo "Error: We currently only support ubuntu|debian|amzn|centos."
+            exit 1
+            ;;
+    esac
 }
 
 
@@ -108,7 +117,7 @@ start_k8s() {
     source subnet.env
 
     # Configure docker net settings, then restart it
-    case "$lsb_dist" in
+    case "${lsb_dist}" in
         centos)
             DOCKER_CONF="/etc/sysconfig/docker"
             echo "OPTIONS=\"\$OPTIONS --mtu=${FLANNEL_MTU} --bip=${FLANNEL_SUBNET}\"" | sudo tee -a ${DOCKER_CONF}
@@ -131,7 +140,7 @@ start_k8s() {
             apt-get install bridge-utils && brctl delbr docker0 && service docker restart
             ;;
         *)
-            echo "Unsupported operations system $lsb_dist"
+            echo "Unsupported operations system ${lsb_dist}"
             exit 1
             ;;
     esac