19385: Add comments and minor reorganization

[arvados.git] / lib / config / config.default.yml

diff --git a/lib/config/config.default.yml b/lib/config/config.default.yml
index f6cf0c91a06681ad7c8ec9574713f6eab82afcf0..26ada44d6deeaed721bf93823d87dc5f6f381793 100644 (file)
--- a/lib/config/config.default.yml
+++ b/lib/config/config.default.yml
@@ -288,6 +288,9 @@ Clusters:
       # any user with "manage" permission can un-freeze.
       UnfreezeProjectRequiresAdmin: false
 
+      # (Experimental) Use row-level locking on update API calls.
+      LockBeforeUpdate: false
+
     Users:
       # Config parameters to automatically setup new users.  If enabled,
       # this users will be able to self-activate.  Enable this if you want
@@ -803,6 +806,16 @@ Clusters:
         # Skip TLS certificate name verification.
         InsecureTLS: false
 
+        # Mininum TLS version to negotiate when connecting to server
+        # (ldaps://... or StartTLS). It may be necessary to set this
+        # to "1.1" for compatibility with older LDAP servers that fail
+        # with 'LDAP Result Code 200 "Network Error": TLS handshake
+        # failed (tls: server selected unsupported protocol version
+        # 301)'.
+        #
+        # If blank, use the recommended minimum version (1.2).
+        MinTLSVersion: ""
+
         # Strip the @domain part if a user supplies an email-style
         # username with this domain. If "*", strip any user-provided
         # domain. If "", never strip the domain part. Example:
@@ -992,13 +1005,6 @@ Clusters:
       # with the cancelled container.
       MaxRetryAttempts: 3
 
-      # The maximum number of compute nodes that can be in use simultaneously
-      # If this limit is reduced, any existing nodes with slot number >= new limit
-      # will not be counted against the new limit. In other words, the new limit
-      # won't be strictly enforced until those nodes with higher slot numbers
-      # go down.
-      MaxComputeVMs: 64
-
       # Schedule all child containers on preemptible instances (e.g. AWS
       # Spot Instances) even if not requested by the submitter.
       #
@@ -1314,6 +1320,15 @@ Clusters:
         # providers too, if desired.
         MaxConcurrentInstanceCreateOps: 1
 
+        # The maximum number of instances to run at a time, or 0 for
+        # unlimited.
+        #
+        # If more instances than this are already running and busy
+        # when the dispatcher starts up, the running containers will
+        # be allowed to finish before the excess instances are shut
+        # down.
+        MaxInstances: 64
+
         # Interval between cloud provider syncs/updates ("list all
         # instances").
         SyncInterval: 1m