7995: Add note about one keep-balance process at a time.

diff --git a/doc/install/install-keep-balance.html.textile.liquid b/doc/install/install-keep-balance.html.textile.liquid
index 623a6e16ced5149badfa7510596266b87bbde6c7..fb358d7aebf58dd8d15671aac30f6b2eae43c52b 100644 (file)
--- a/doc/install/install-keep-balance.html.textile.liquid
+++ b/doc/install/install-keep-balance.html.textile.liquid
@@ -16,6 +16,8 @@ h2. Install keep-balance
 
 Keep-balance can be installed anywhere with network access to Keep services. Typically it runs on the same host as keepproxy.
 
+*A cluster should have only one keep-balance process running at a time.*
+
 On Debian-based systems:
 
 <notextile>