Merge pull request #213 from wazuh/3.9.3_fix_cluster_config

Fixed duplicated cluster configuration

docker-compose.yml

@@ -12,22 +12,33 @@ services:
       - "514:514/udp"
       - "55000:55000"
   elasticsearch:
-    image: wazuh/wazuh-elasticsearch:3.9.2_7.1.1
+    build: elasticsearch
     hostname: elasticsearch
     restart: always
     ports:
       - "9200:9200"
     environment:
-      - node.name=node-1
-      - cluster.name=wazuh
-      - network.host=0.0.0.0
-      - bootstrap.memory_lock=true
       - "ES_JAVA_OPTS=-Xms1g -Xmx1g"
+      - ELASTIC_CLUSTER=true
+      - CLUSTER_NODE_MASTER=true
+      - CLUSTER_MASTER_NODE_NAME=es01
+
+  es02:
+    build: elasticsearch
+    hostname: es02
+    restart: always
+    environment:
+      - "ES_JAVA_OPTS=-Xms1g -Xmx1g"
+      - ELASTIC_CLUSTER=true
+      - CLUSTER_MASTER_NODE_NAME=elasticsearch
+      - CLUSTER_NODE_NAME=es02
     ulimits:
       memlock:
         soft: -1
         hard: -1
     mem_limit: 2g
+
+
   kibana:
     image: wazuh/wazuh-kibana:3.9.2_7.1.1
     hostname: kibana

elasticsearch/Dockerfile

@@ -22,10 +22,11 @@ ARG TEMPLATE_VERSION=v3.9.2
 # CLUSTER_INITIAL_MASTER_NODES set to own node by default.
 ENV ELASTIC_CLUSTER="false" \
     CLUSTER_NAME="wazuh" \
-    CLUSTER_NODE_MASTER="true" \
+    CLUSTER_NODE_MASTER="false" \
     CLUSTER_NODE_DATA="true" \
     CLUSTER_NODE_INGEST="true" \
     CLUSTER_NODE_NAME="wazuh-elasticsearch" \
+    CLUSTER_MASTER_NODE_NAME="master-node" \
     CLUSTER_MEMORY_LOCK="true" \
     CLUSTER_DISCOVERY_SERVICE="wazuh-elasticsearch" \
     CLUSTER_NUMBER_OF_MASTERS="2" \
@@ -33,8 +34,6 @@ ENV ELASTIC_CLUSTER="false" \
     CLUSTER_DELAYED_TIMEOUT="1m" \
     CLUSTER_INITIAL_MASTER_NODES="wazuh-elasticsearch"
 
-ADD https://raw.githubusercontent.com/wazuh/wazuh/$TEMPLATE_VERSION/extensions/elasticsearch/7.x/wazuh-template.json /usr/share/elasticsearch/config
-
 COPY config/entrypoint.sh /entrypoint.sh 
 
 RUN chmod 755 /entrypoint.sh

elasticsearch/config/config_cluster.sh

@@ -3,39 +3,52 @@
 
 elastic_config_file="/usr/share/elasticsearch/config/elasticsearch.yml"
 
+remove_single_node_conf(){
+  if grep -Fq "discovery.type" $1; then
+    sed -i '/discovery.type\: /d' $1 
+  fi
+}
 
-# If Elasticsearch cluster is enable
-if [[ $ELASTIC_CLUSTER == "true" ]]
-then
+# If Elasticsearch cluster is enable, then set up the elasticsearch.yml
+if [[ $ELASTIC_CLUSTER == "true" && $CLUSTER_NODE_MASTER != "" && $CLUSTER_NODE_DATA != "" && $CLUSTER_NODE_INGEST != "" && $CLUSTER_MASTER_NODE_NAME != "" ]]; then
 
-  # Set the cluster.name and discovery.zen.minimun_master_nodes variables
-  sed -i 's:cluster.name\: "docker-cluster":cluster.name\: "'$CLUSTER_NAME'":g' $elastic_config_file
-  #sed -i 's:discovery.zen.minimum_master_nodes\: 1:discovery.zen.minimum_master_nodes\: '$CLUSTER_NUMBER_OF_MASTERS':g' $elastic_config_file
+  remove_single_node_conf $elastic_config_file
 
-  # Add the cluster configuration
-  echo "
-#cluster node
-node:
-  master: ${CLUSTER_NODE_MASTER}
-  data: ${CLUSTER_NODE_DATA}
-  ingest: ${CLUSTER_NODE_INGEST}
-  name: ${CLUSTER_NODE_NAME}
-  max_local_storage_nodes: ${CLUSTER_MAX_NODES}
-
-bootstrap:
-  memory_lock: ${CLUSTER_MEMORY_LOCK} 
+  # Remove the old configuration
+  sed -i '/# cluster node/,/# end cluster config/d' $elastic_config_file
 
+if [[ $CLUSTER_NODE_MASTER == "true" ]]; then
+# Add the master configuration
+# cluster.initial_master_nodes for bootstrap the cluster
+cat > $elastic_config_file << EOF
+# cluster node
+network.host: 0.0.0.0
+node.name: $CLUSTER_MASTER_NODE_NAME
+node.master: $CLUSTER_NODE_MASTER
 cluster.initial_master_nodes: 
-  - '${CLUSTER_INITIAL_MASTER_NODES}'
-
-" >> $elastic_config_file
-else
-
-cat >> $elastic_config_file <<'EOF'
-cluster.initial_master_nodes:
-  - 'elasticsearch'
+  - $CLUSTER_MASTER_NODE_NAME
+# end cluster config" 
 EOF
 
-# echo 'discovery.type: single-node'
+elif [[ $CLUSTER_NODE_NAME != "" ]];then
 
+sed -i '/# cluster node/,/# end cluster config/d' $elastic_config_file
+
+cat > $elastic_config_file << EOF
+# cluster node
+network.host: 0.0.0.0
+node.name: $CLUSTER_NODE_NAME
+node.master: false
+discovery.seed_hosts: 
+  - $CLUSTER_MASTER_NODE_NAME
+  - $CLUSTER_NODE_NAME
+# end cluster config" 
+EOF
+fi
+# If the cluster is disabled, then set a single-node configuration
+else
+  sed -i '/# cluster node/,/# end cluster config/d' $elastic_config_file
+  # If it's not already configured
+  remove_single_node_conf $elastic_config_file
+  echo "discovery.type: single-node" >> $elastic_config_file
 fi