## MongoDB Ensure GnuPG is installed and add Mongo PGP keys ```bash sudo apt-get install -y install lsb-release ca-certificates curl gnupg2 curl -fsSL https://pgp.mongodb.com/server-6.0.asc | \ sudo gpg -o /usr/share/keyrings/mongodb-server-6.0.gpg --dearmor ``` Using the following commands, add the repository to your system ```bash echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu $(lsb_release -cs)/mongodb-org/6.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-6.0.list ``` Install MongoDB 6.0 ```bash sudo apt update && sudo apt install mongodb-org ``` After successful installation, Check MongoDB installed version: ```bash mongod --version ``` Start/enable MongoDB and check its status: ```bash sudo systemctl enable --now mongod sudo systemctl status mongod ``` MongoDB should now be installed and exposed on port 27017 ## OpenSearch Installation Import GPG key ```bash curl -o- https://artifacts.opensearch.org/publickeys/opensearch.pgp | sudo apt-key add - ``` Add APT repository ```bash echo "deb https://artifacts.opensearch.org/releases/bundle/opensearch/2.x/apt stable main" | sudo tee -a /etc/apt/sources.list.d/opensearch-2.x.list ``` Verify that the repository was added successfully. ```bash sudo apt-get update ``` With the repository information added, list all available versions of OpenSearch: ```bash sudo apt list -a opensearch ``` Choose the version of OpenSearch you want to install. (Unless otherwise indicated, the latest available version of OpenSearch is installed.) ```bash sudo apt-get install opensearch sudo systemctl start opensearch sudo systemctl status opensearch sudo systemctl enable opensearch ``` ## OpenSearch Configuration Edit JVM options: ```bash sudo nano /etc/opensearch/jvm.options ``` Update the `Xms` & `Xmx` settings with half of the installed system memory. (For example 12GB system memory): ``` -Xms6g -Xmx6g ``` _Configure the kernel parameters at runtime:_ ```bash sudo sysctl -w vm.max_map_count=262144 sudo echo 'vm.max_map_count=262144' >> /etc/sysctl.conf ``` _Finally, enable the system service:_ ```bash sudo systemctl daemon-reload sudo systemctl enable opensearch.service sudo systemctl start opensearch.service sudo systemctl status opensearch.service ``` ## Graylog ### Install Repository information is provided through .deb ```bash wget https://packages.graylog2.org/repo/packages/graylog-5.0-repository_latest.deb sudo dpkg -i graylog-5.0-repository_latest.deb sudo apt-get update && sudo apt-get install graylog-server ``` ### GrayLog Configuration To create your root_password_sha2, run the following command: ```bash echo -n "Enter Password: " && head -1 </dev/stdin | tr -d '\n' | sha256sum | cut -d" " -f1 ``` _You will then need to use the following command to create your password_secret:_ ```bash < /dev/urandom tr -dc A-Z-a-z-0-9 | head -c${1:-96};echo; ``` _then edit this file with the 2 passwords from above._ ```bash sudo nano /etc/graylog/server/server.conf ``` _To be able to connect to Graylog, set http_bind_address to the public host name or a public IP address of the machine with which you can connect._ _The last step is to enable Graylog during the operating system’s startup:_ ```bash sudo systemctl daemon-reload sudo systemctl enable graylog-server.service sudo systemctl start graylog-server.service sudo systemctl --type=service --state=active | grep graylog ```