Add the required 'multimaster.max_nodes' config parameter to the test prepare procedure.

Author: kvap

Cluster.pm

@@ -104,6 +104,7 @@ sub configure
 			multimaster.use_raftable = true
 			multimaster.heartbeat_recv_timeout = 1000
 			multimaster.heartbeat_send_timeout = 250
+			multimaster.max_nodes = 3
 			multimaster.ignore_tables_without_pk = true
 			multimaster.twopc_min_timeout = 2000
 		));

README.md

@@ -52,4 +52,4 @@ An implementation of synchronous **multi-master replication** based on **commit
 ## Testing
 
 * `make -C contrib/mmts check` to run TAP-tests.
-* `make -C contrib/mmts xcheck` to run blockade tests. The blockade tests require `docker`, `blockade`, and some other packages installed, see [requirements.txt](tests2/requirements.txt) for the list.
+* `make -C contrib/mmts xcheck` to run blockade tests. The blockade tests require `docker`, `blockade`, and some other packages installed, see [requirements.txt](tests2/requirements.txt) for the list. You might also want to gain superuser privileges to run these tests successfully.

tests2/docker-entrypoint.sh

@@ -81,6 +81,7 @@ if [ "$1" = 'postgres' ]; then
 			log_autovacuum_min_duration = 0
 
 			multimaster.workers = 4
+			multimaster.max_nodes = 3
 			multimaster.use_raftable = true
 			multimaster.queue_size=52857600
 			multimaster.ignore_tables_without_pk = 1