Allow underscores in container name

1 files changed, 2 insertions, 2 deletions

diff --git a/node-admin/src/main/java/com/yahoo/vespa/hosted/node/admin/container/ContainerName.java b/node-admin/src/main/java/com/yahoo/vespa/hosted/node/admin/container/ContainerName.java
index 429580b4d1b..203a6201f1e 100644
--- a/node-admin/src/main/java/com/yahoo/vespa/hosted/node/admin/container/ContainerName.java
+++ b/node-admin/src/main/java/com/yahoo/vespa/hosted/node/admin/container/ContainerName.java
@@ -11,14 +11,14 @@ import java.util.regex.Pattern;
  */
 public class ContainerName implements Comparable<ContainerName> {
 
-    private static final Pattern LEGAL_CONTAINER_NAME_PATTERN = Pattern.compile("^[a-zA-Z0-9-]+$");
+    private static final Pattern LEGAL_CONTAINER_NAME_PATTERN = Pattern.compile("^[a-zA-Z0-9-_]+$");
     private final String name;
 
     public ContainerName(final String name) {
         this.name = Objects.requireNonNull(name);
         if (! LEGAL_CONTAINER_NAME_PATTERN.matcher(name).matches()) {
             throw new IllegalArgumentException("Illegal container name: " + name + ". Must match " +
-                    LEGAL_CONTAINER_NAME_PATTERN.toString());
+                    LEGAL_CONTAINER_NAME_PATTERN.pattern());
         }
     }