Allow to upgrade system

1 files changed, 5 insertions, 1 deletions

diff --git a/node-admin/src/main/java/com/yahoo/vespa/hosted/node/admin/task/util/yum/Yum.java b/node-admin/src/main/java/com/yahoo/vespa/hosted/node/admin/task/util/yum/Yum.java
index d88c6f4ab33..5d60823d1c5 100644
--- a/node-admin/src/main/java/com/yahoo/vespa/hosted/node/admin/task/util/yum/Yum.java
+++ b/node-admin/src/main/java/com/yahoo/vespa/hosted/node/admin/task/util/yum/Yum.java
@@ -36,6 +36,10 @@ public class Yum {
         return newYumCommand("install", packages, INSTALL_NOOP_PATTERN);
     }
 
+    /**
+     * @param packages A list of packages, each package being of the form name-1.2.3-1.el7.noarch,
+     *                 if no packages are given, will upgrade all installed packages
+     */
     public GenericYumCommand upgrade(String... packages) {
         return newYumCommand("upgrade", packages, UPGRADE_NOOP_PATTERN);
     }
@@ -70,7 +74,7 @@ public class Yum {
             this.packages = packages;
             this.commandOutputNoopPattern = commandOutputNoopPattern;
 
-            if (packages.isEmpty()) {
+            if (packages.isEmpty() && ! "upgrade".equals(yumCommand)) {
                 throw new IllegalArgumentException("No packages specified");
             }
         }