From de276b6a439179b3cd0c94df82729cae8ab1cb9a Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Wed, 13 Dec 2017 13:35:59 +0100
Subject: [PATCH] Cluster: allow read-only EVAL/EVALSHA in slaves.

Fix #3665.
---
 src/cluster.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/cluster.c b/src/cluster.c
index 6f7f982f..a5ecf84c 100644
--- a/src/cluster.c
+++ b/src/cluster.c
@@ -5392,7 +5392,8 @@ clusterNode *getNodeByQuery(client *c, struct redisCommand *cmd, robj **argv, in
      * node is a slave and the request is about an hash slot our master
      * is serving, we can reply without redirection. */
     if (c->flags & CLIENT_READONLY &&
-        cmd->flags & CMD_READONLY &&
+        (cmd->flags & CMD_READONLY || cmd->proc == evalCommand ||
+         cmd->proc == evalShaCommand) &&
         nodeIsSlave(myself) &&
         myself->slaveof == n)
     {