I'm installing on Debian 12 (not supported).
Install dependencies to add the new repo
apt update && \
apt install lsb-release ca-certificates curl gnupg2 -yAdd the repositories public key
curl -o- https://artifacts.opensearch.org/publickeys/opensearch.pgp | sudo gpg --dearmor --batch --yes -o /etc/apt/keyrings/opensearchAdd the repository
echo "deb [signed-by=/etc/apt/keyrings/opensearch] https://artifacts.opensearch.org/releases/bundle/opensearch/2.x/apt stable main" | tee /etc/apt/sources.list.d/opensearch-2.x.listInstall OpenSearch. You must supply an initial admin password.
env OPENSEARCH_INITIAL_ADMIN_PASSWORD=************ \
apt install opensearchEnable the systemd service.
systemctl daemon-reload && \
systemctl enable --now opensearch.service && \
systemctl status opensearch.serviceOpenSearch is running in, what is considered, “Demo Mode" at this point. Let's prepare OpenSearch for production use.
Enable memory locking in the Opensearch config
sed -i "s/bootstrap.memory_lock: false/bootstrap.memory_lock: true/" /etc/opensearch/opensearch.ymlDebian uses systemd to handle swap devices and processes - you must add the following to the Opensearch service, as an override.
mkdir /etc/systemd/system/opensearch.service.d && \
bash -c "cat > /etc/systemd/system/opensearch.service.d/override.conf" <<'EOF'
[Service]
LimitMEMLOCK=infinity
EOFFinally, follow this guide to disable swap for the host system. The latter config will cause Opensearch to fail its startup checks if you do not disable the host system's use of swap.