switch to 3 nodes, test w/ crash

Author: amiller

dstack-database/docker-compose.yml

@@ -35,22 +35,10 @@ services:
       - node3-zk:/data/zookeeper
       - node3-pg:/data/postgres
 
-  node4:
-    build: .
-    hostname: node4
-    environment:
-      - NODE_NAME=node4
-      - NODE_IP=node4
-    volumes:
-      - node4-zk:/data/zookeeper
-      - node4-pg:/data/postgres
-
 volumes:
   node1-zk:
   node1-pg:
   node2-zk:
   node2-pg:
   node3-zk:
   node3-pg:
-  node4-zk:
-  node4-pg:

dstack-database/patroni.yml

@@ -7,7 +7,7 @@ restapi:
   connect_address: #{NODE_IP}:8008
 
 zookeeper:
-  hosts: node1:2181,node2:2181,node3:2181,node4:2181
+  hosts: node1:2181,node2:2181,node3:2181
   session_timeout: 30
   reconnect_timeout: 10
 

dstack-database/zoo.cfg

@@ -8,5 +8,4 @@ autopurge.snapRetainCount=3
 autopurge.purgeInterval=1
 server.1=node1:2888:3888
 server.2=node2:2888:3888
-server.3=node3:2888:3888
-server.4=node4:2888:3888
+server.3=node3:2888:3888