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Version: 7.0

Linux

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This section provides the installation steps for NetObserv SNMP. Many users get started using ElastiFlow with the Elastic Stack (Elasticsearch and Kibana). To install and configure the Elastic Stack step-by-step instructions are provided for both Ubuntu/Debian and RedHat/AlmaLinux.

NetObserv SNMP can be installed natively on Linux. Packages are currently provided for and supported on the Linux distributions and versions listed in the following table.

DistributionVersions
Ubuntu/Debian18.04 LTS, 20.04 LTS, 22.04 LTS
RHEL/AlmaLinux8.x, 9.x

Ubuntu/Debian Installation (deb)

The Debian package for the NetObserv SNMP can be downloaded from here. It can be used for installation on most Debian-based systems such as Debian and Ubuntu.

Download the .deb Package

The package can be easily downloaded using either the wget or curl command:

wget https://elastiflow-releases.s3.us-east-2.amazonaws.com/snmp-collector/snmp-collector_7.0.2_linux_amd64.deb
curl https://elastiflow-releases.s3.us-east-2.amazonaws.com/snmp-collector/snmp-collector_7.0.2_linux_amd64.deb --output snmp-collector_7.0.2_linux_amd64.deb

Verify the Package

Checksum Verification

To ensure the downloaded file was fully downloaded and wasn't corrupted or tampered with, you can verify the provided checksum matches.

# get checksum of the downloaded file:
sha256sum snmp-collector_7.0.2_linux_amd64.deb

# verify the checksum provided from the previous command matches the checksum here:
https://elastiflow-releases.s3.us-east-2.amazonaws.com/snmp-collector/snmp-collector_7.0.2_linux_amd64.deb.sha256

GPG Verification

ElastiFlow signs the Debian package with a GNU Privacy Guard (GPG) key. To verify the Debian package, download and import the ElastiFlow GPG public key:

curl -o- https://elastiflow-releases.s3.us-east-2.amazonaws.com/elastiflow.pgp | gpg --import -

Next, download the signature file:

curl -SLO https://elastiflow-releases.s3.us-east-2.amazonaws.com/snmp-collector/snmp-collector_7.0.2_linux_amd64.deb.sig

Finally, verify the file with the signature:

gpg --verify snmp-collector_7.0.2_linux_amd64.deb.sig snmp-collector_7.0.2_linux_amd64.deb

Ensure that libpcap-dev is Installed

The collector requires libpcap-dev. Check if the libpcap-dev package is installed:

sudo dpkg-query -l | grep libpcap-dev

If installed, the output will look similar to the follow:

ii  libpcap-dev:amd64      1.9.1-3      amd64      development library for libpcap (transitional package)

If it is not present, install it:

apt install libpcap-dev

Install the .deb Package

There are two methods to install the NetObserv SNMP package, apt or dpkg.

Install with apt

sudo apt install ./snmp-collector_7.0.2_linux_amd64.deb

Install with dpkg

sudo dpkg -i snmp-collector_7.0.2_linux_amd64.deb

RedHat/AlmaLinux Installation (rpm)

The RPM package for the NetObserv SNMP can be downloaded from here. It can be used for installation on most RedHat-based systems such as RHEL and CentOS.

Download the .rpm Package

The package can be easily downloaded using wget or curl:

wget https://elastiflow-releases.s3.us-east-2.amazonaws.com/snmp-collector/snmp-collector-7.0.2-1.x86_64.rpm
curl https://elastiflow-releases.s3.us-east-2.amazonaws.com/snmp-collector/snmp-collector-7.0.2-1.x86_64.rpm --output snmp-collector-7.0.2-1.x86_64.rpm

Verify the Package

Checksum Verification

To ensure the downloaded file was fully downloaded and wasn't corrupted or tampered with, you can verify the provided checksum matches.

# get checksum of the downloaded file:
sha256sum snmp-collector-7.0.2-1.x86_64.rpm

# verify the checksum provided from the previous command matches the checksum here:
https://elastiflow-releases.s3.us-east-2.amazonaws.com/snmp-collector/snmp-collector-7.0.2-1.x86_64.rpm.sha256

GPG Verification

ElastiFlow signs the RPM package with a GNU Privacy Guard (GPG) key. To verify the RPM package, download and import the ElastiFlow GPG public key:

# import public key into gpg keychain
curl -o- https://elastiflow-releases.s3.us-east-2.amazonaws.com/elastiflow.pgp | gpg --import -
# trust the public key
echo "6A2E26EFDE24AA7A634A442ED5C0572E5D212F6B:6:" | gpg --import-ownertrust
# import public key into rpm trust store
rpm --import https://elastiflow-releases.s3.us-east-2.amazonaws.com/elastiflow.pgp

Next, download the signature file:

curl -SLO https://elastiflow-releases.s3.us-east-2.amazonaws.com/snmp-collector/snmp-collector-7.0.2-1.x86_64.rpm.sig

Finally, verify the file with the signature:

gpg --verify snmp-collector-7.0.2-1.x86_64.rpm.sig snmp-collector-7.0.2-1.x86_64.rpm

Ensure that libpcap and libpcap-devel are Installed

The collector requires libpcap and libpcap-devel. Check if the packages are installed:

rpm -q libpcap libpcap-devel

If installed, the output will look similar to the following:

libpcap-1.9.1-5.el8.x86_64
libpcap-devel-1.9.1-5.el8.x86_64

If the packages are not present, install them:

RHEL 8.x based Distributions

sudo dnf --enablerepo=powertools install libpcap libpcap-devel -y

RHEL 9.x based Distributions

sudo dnf --enablerepo=crb install libpcap libpcap-devel -y

Install/Upgrade the .rpm Package

If installing the NetObserv SNMP package for the first time, i.e. NOT upgrading, run the following:

sudo yum install -y snmp-collector-7.0.2-1.x86_64.rpm

If upgrading from a previously installed NetObserv SNMP package, run the following:

sudo rpm -Uhv snmp-collector-7.0.2-1.x86_64.rpm

Configuration

The NetObserv SNMP will be installed to run as a daemon managed by systemd. Configuration of the collector is provided via environment variables and, depending on the enabled options, via various configuration files which by default are located within /etc/elastiflow.

To configure the variables, edit the file /etc/elastiflow/snmpcoll.yml. For details on all of the configuration options, please refer to the Configuration Reference.

tip

At a minimum the NetObserv SNMP must point to a valid data store. The most common installation uses Elasticsearch and Kibana as the data store.

To install and configure the Elastic Stack step-by-step instructions are provided for both Ubuntu/Debian and RedHat/AlmaLinux.

Running the Collector

To start the collector, execute the follow commands:

sudo systemctl daemon-reload && sudo systemctl start snmpcoll.service

To ensure the collector has started and is running, execute:

sudo systemctl status snmpcoll.service

The collector can be stopped using:

sudo systemctl stop snmpcoll.service

If you want the collector to be started automatically when the system is booted, it must be enabled:

sudo systemctl enable snmpcoll.service