Installing the Wazuh indexer using the assisted installation method

Wazuh indexer cluster installation

The installation process is divided into three stages.

1. Initial configuration

2. Wazuh indexer nodes installation

3. Cluster initialization

Initial configuration

Follow these steps to configure your Wazuh deployment, create SSL certificates to encrypt communications between the Wazuh components, and generate random passwords to secure your installation.

1. Download the Wazuh installation assistant and the configuration file.

   # curl -sO https://packages.wazuh.com/4.13/wazuh-install.sh
   # curl -sO https://packages.wazuh.com/4.13/config.yml
   

2. Edit ./config.yml and replace the node names and IP values with the corresponding names and IP addresses. You need to do this for all Wazuh server, Wazuh indexer, and Wazuh dashboard nodes. Add as many node fields as needed.

   nodes:
     # Wazuh indexer nodes
     indexer:
       - name: node-1
         ip: "<indexer-node-ip>"
       #- name: node-2
       #  ip: "<indexer-node-ip>"
       #- name: node-3
       #  ip: "<indexer-node-ip>"
   
     # Wazuh server nodes
     # If there is more than one Wazuh server
     # node, each one must have a node_type
     server:
       - name: wazuh-1
         ip: "<wazuh-manager-ip>"
       #  node_type: master
       #- name: wazuh-2
       #  ip: "<wazuh-manager-ip>"
       #  node_type: worker
       #- name: wazuh-3
       #  ip: "<wazuh-manager-ip>"
       #  node_type: worker
   
     # Wazuh dashboard nodes
     dashboard:
       - name: dashboard
         ip: "<dashboard-node-ip>"
   

3. Run the Wazuh installation assistant with the option --generate-config-files to generate the Wazuh cluster key, certificates, and passwords necessary for installation. You can find these files in ./wazuh-install-files.tar.

   # bash wazuh-install.sh --generate-config-files
   

4. Copy the wazuh-install-files.tar file to all the servers of the distributed deployment, including the Wazuh server, the Wazuh indexer, and the Wazuh dashboard nodes. This can be done by using the scp utility.

Wazuh indexer node installation

Follow these steps to install and configure a single-node or multi-node Wazuh indexer.

1. Download the Wazuh installation assistant. Skip this step if you performed the initial configuration on the same server and the Wazuh installation assistant is already in your working directory:

   # curl -sO https://packages.wazuh.com/4.13/wazuh-install.sh
   

2. Run the Wazuh installation assistant with the option --wazuh-indexer and the node name to install and configure the Wazuh indexer. The node name must be the same one used in config.yml for the initial configuration, for example, node-1.

   Note

   Make sure that a copy of wazuh-install-files.tar, created during the initial configuration step, is placed in your working directory.

   # bash wazuh-install.sh --wazuh-indexer node-1
   

Repeat this stage of the installation process for every Wazuh indexer node in your cluster. Then proceed with initializing your single-node or multi-node cluster in the next stage.

Cluster initialization

The final stage of installing the Wazuh indexer single-node or multi-node cluster consists of running the security admin script.

1. Run the Wazuh installation assistant with option --start-cluster on any Wazuh indexer node to load the new certificates information and start the cluster.

   # bash wazuh-install.sh --start-cluster
   

   Note

   You only have to initialize the cluster once, there is no need to run this command on every node.

Testing the cluster installation

Verify that the Wazuh indexer installed correctly and the Wazuh indexer cluster is functioning as expected by following the steps below.

1. Run the following command to get the admin password:

   # tar -axf wazuh-install-files.tar wazuh-install-files/wazuh-passwords.txt -O | grep -P "\'admin\'" -A 1
   

2. Run the following command to confirm that the installation is successful. Replace <WAZUH_INDEXER_IP_ADDRESS> with the IP address of the Wazuh indexer and use the password gotten from the output of the previous command:

   # curl -k -u admin https://<WAZUH_INDEXER_IP_ADDRESS>:9200
   

   {
     "name" : "node-1",
     "cluster_name" : "wazuh-cluster",
     "cluster_uuid" : "095jEW-oRJSFKLz5wmo5PA",
     "version" : {
       "number" : "7.10.2",
       "build_type" : "rpm",
       "build_hash" : "db90a415ff2fd428b4f7b3f800a51dc229287cb4",
       "build_date" : "2023-06-03T06:24:25.112415503Z",
       "build_snapshot" : false,
       "lucene_version" : "9.6.0",
       "minimum_wire_compatibility_version" : "7.10.0",
       "minimum_index_compatibility_version" : "7.0.0"
     },
     "tagline" : "The OpenSearch Project: https://opensearch.org/"
   }
   

3. Run the following command to check if the cluster is working correctly. Replace <WAZUH_INDEXER_IP_ADDRESS> with the IP address of the Wazuh indexer and enter the password for the Wazuh indexer admin user when it prompts for password:

   # curl -k -u admin https://<WAZUH_INDEXER_IP_ADDRESS>:9200/_cat/nodes?v
   

   The command output should be similar to the following:

   ip              heap.percent ram.percent cpu load_1m load_5m load_15m node.role node.roles                               cluster_manager name
   192.168.107.240           19          94   4    0.22    0.21     0.20 dimr      data,ingest,master,remote_cluster_client *               node-1
   

Disable Wazuh updates

We recommend disabling the Wazuh package repositories after installing all components on this server to prevent accidental upgrades.

Execute the following command only after completing all installations:

# sed -i "s/^deb /#deb /" /etc/apt/sources.list.d/wazuh.list
# apt update

# sed -i "s/^enabled=1/enabled=0/" /etc/yum.repos.d/wazuh.repo

# sed -i "s/^enabled=1/enabled=0/" /etc/yum.repos.d/wazuh.repo

Next steps

The Wazuh indexer is now successfully installed, and you can proceed with installing the Wazuh server. To perform this action, see the Installing the Wazuh server using the assisted installation method section.