OpenNMS
Author: m | 2025-04-25
In this project Videos. OpenNMS 101 Training OpenNMS 102 Training OpenNMS on YouTube OpenNMS Meridian is a paid subscription plan that offers customers a stable version of OpenNMS to work with. Pricing. OpenNMS is available in two editions: OpenNMS
OpenNMS - Browse /OpenNMS at SourceForge.net
Update the repository and install OpenNMS with the following command:apt-get update -y apt-get install default-mta opennms -yWhen the installation is successfully completed, you can proceed to the next step.Create a database for OpenNMSBefore you create the OpenNMS database, you need to set a password for the postgres user. Execute the following command to set the password for postgres:passwd postgresType the desired password and press Enter, as shown below:Enter new UNIX password: Retype new UNIX password: passwd: password updated successfullyAfter setting a new password, you will be prompted to confirm the password whenever you want to access the PostgreSQL interactive shell.Log in as a postgres user with the following command:su - postgresOnce logged in, create a user and database for OpenNMS with the following command:createuser -P opennms createdb -O opennms opennmsNext, set a password for the Postgres superuser with the following command:psql -c "ALTER USER postgres WITH PASSWORD 'opennmspassword';"Finally, exit the Postgres shell with the following command:exitNext, you need to set the database settings for OpenNMS. You can do this by editing the opennms-datasources.xml file. This is where you set the database name, database user name, database user password, and postgres user for administrative access to PostgreSQL.nano /etc/opennms/opennms-datasources.xmlMake the following changes: Save and close the file when you are done. Then set the Java environment with the following command:/usr/share/opennms/bin/runjava -sIf everything works, you should see the following output:runjava: Looking for an appropriate JVM...runjava: Checking for an appropriate JVM in JAVA_HOME...runjava: Skipping... JAVA_HOME not set.runjava: Checking JVM in the PATH: "/etc/alternatives/java"...runjava: Did not find an appropriate JVM in the PATH: "/etc/alternatives/java"runjava: Searching for a good JVM...runjava: Found a good JVM in "/usr/lib/jvm/java-11-openjdk-amd64/bin/java".runjava: Value of "/usr/lib/jvm/java-11-openjdk-amd64/bin/java" stored in configuration file.Next you need to initialize the database. You can do this with the following command:/usr/share/opennms/bin/install -disYou should see the following output:Processing DiscoveryConfigurationLocationMigratorOffline: Changes the name for the default location from 'localhost' to 'Default'. See HZN-940.- Running pre-execution phase Backing up discovery-configuration.xml Zipping /usr/share/opennms/etc/discovery-configuration.xml- Running execution phase- Saving the execution state- Running post-execution phase Removing backup /usr/share/opennms/etc/discovery-configuration.xml.zipFinished in 0 secondsUpgrade completed successfully!Finally, you need to restart the OpenNMS service so that all configuration changes are applied:systemctl restart opennmsYou can check the status of OpenNMS with the following command:systemctl status opennmsYou should get the following output:? opennms.service - LSB: OpenNMS - Open Source Network Management System Loaded: loaded (/etc/init.d/opennms; generated) Active: active (running) since Wed 2019-08-28 06:40:19 UTC; 16s ago Docs: man:systemd-sysv-generator(8) Process: 14088 ExecStart=/etc/init.d/opennms start (code=exited, status=0/SUCCESS) Tasks: 172 (limit: 4915) CGroup: /system.slice/opennms.service ??15147 /bin/bash /usr/sbin/opennms start ??15148 /usr/lib/jvm/java-11-openjdk-amd64/bin/java --add-modules=java.base,java.compiler,java.datatransfer,java.desktop,java.instruAug 28 06:40:14 ubuntu1804 systemd[1]: Starting LSB: OpenNMS - Open Source Network Management System...Aug 28 06:40:19 ubuntu1804 opennms[14088]: Starting Open Network Management System: opennmsStarting OpenNMS: (not waiting for startup) okAug 28 06:40:19 ubuntu1804 opennms[14088]: .Aug 28 06:40:19 ubuntu1804 systemd[1]: Started LSB: OpenNMS - Open Source Network Management System.When you are done, you can proceed to the next step.Accessing OpenNMSOpenNMS is now installed and listening on port 8980. Now it is time to access the OpenNMS web interface. To do this, open your web browser and enter
Welcome to the OpenNMS Documentation - The OpenNMS
OpenNMSOpenNMS is an open-source network monitoring platform that helps you visualize and monitor everything on your local and distributed networks. OpenNMS offers comprehensive fault, performance, and traffic monitoring with alarm generation in one place. Highly customizable and scalable, OpenNMS integrates with your core business applications and workflows.FeaturesFull inventory managementFlexible provisioning system provides many ways to interoperate with configuration management systems.Extensive data collectionWorks with many industry-standard data collection protocols with no need to write or maintain third-party plugins: SNMP, JSON, WinRM, XML, SQL, JMX, SFTP, FTP, JDBC, HTTP, HTTPS, VMware, WS-Management, Prometheus.Robust traffic managementSupports the following flow protocols: (NetFlow v5/v9, IPFIX, sFlow). 300,000+ flows/sec. BGP Monitoring support implementing the OpenBMP standards for BGP messages and metrics. Deep-dive analysis, enterprise reporting.Digital experience monitoringUse the OpenNMS Minion to monitor a service’s latency and availability from different perspectives.Robust configurationConfigure most features through the web UI or XML scripting, including thresholding, provisioning, event and flow management, service monitoring, and performance measurement.ScalabilityScale through Sentinels for flow persistence, Minions for Flow, BMP, SNMP trap, and Syslog ingest, and embedded ActiveMQ to Kafka message brokers.Enterprise reporting and visualizationCustomizable dashboards that you can export as a PDF. Resource graphs, database reports, charts. Define and customize complex layered topologies to integrate topology maps into your service problem management workflow.Install OpenNMSFor details on installing OpenNMS, see Install OpenNMS.TL;DR - If you just want to set up a simple non-production evaluation of OpenNMS Horizon on Linux, some basic install scripts are available at opennms-forge/opennms-installBuild OpenNMSFor details on how to build OpenNMS, see Build OpenNMS from source.What is the OpenNMS Appliance Service? - The OpenNMS
Capstone project on network threat simulations SKILLS Network Security: Junos OS, SRX Series Gateways, Virtual Private Networks (VPNs), Intrusion Prevention Systems (IPS), SSL Inspection, Unified Threat Management (UTM)Network Protocols: BGP, OSPF, MPLS, VPLS, IPv6, Multicast, QoS, STP, VRRPNetworking Tools: Wireshark, TCPdump, J-Web, Space Network Management, OpenNMS, NagiosScripting & Automation: Python (essential networking libraries), Ansible, JUNOS PyEZ, SaltStack, Automation Scripts OTHER Certifications: Cisco Certified Network Associate (CCNA), CompTIA Network+ (2019)Technical Projects: Developed an automated network troubleshooting tool using Python, contributing to a 20% reduction in issue resolution timesContinuing Education: Regular participant in Juniper Networks webinars and training sessions to stay updated with the latest networking trends and technologiesProfessional Memberships: Active member of the Juniper Networks Professional Community, participating in forums and network security discussions Find out how good your resume is ummm here it is -->Highlighting the right skillsAnother key to success as a juniper network engineer is possessing the right blend of soft and hard skills. In addition to your technical proficiency, emphasize transferable skills such as problem-solving and project management. Include instances where you used these skills to implement or troubleshoot network solutions.Also, networking automation is becoming more important in this field. So, highlight any experience with Python scripting or other automation tools to demonstrate your readiness for the future of network engineering. Example #6 Juniper Network Engineer with Security Specialization Resume Sample EXPERIENCE Juniper Network Engineer with Security SpecializationImplemented Juniper-based network security systems, reducing security incidents by 20%Led the team in deploying Juniper SA series SSL VPN Appliances, ensuring 99.9% network uptimeDevised and implemented comprehensive security strategies, reducing vulnerabilities by 80% over 2 yearsNetwork Security EngineerConstructed firewalls and set up secure network parameters, preventing 95% intrusion attemptsSet up Intrusion Detection Systems, resulting in 20% earlier detection of potential threatsRevamped company's network security policy, resulting in a 15% increase in network security complianceConducted regular security audits and took remediation steps, reducing security threats by 10%Provided training to 100+ employees on IT security best practices EDUCATION Certified Information Systems Security Professional (CISSP)Part-time certification course completed alongside a full-time roleMaster of Science - Network SecurityThesis on Advanced Persistent Threats in Network Security SKILLS Network Operating Systems: JunOS, Cisco IOS, Palo Alto PAN-OS, FortiOS, Check Point GAiASecurity Tools & Protocols: Wireshark, OpenVAS, Snort, Nessus, IPSec, SSL/TLS, SSH, PGPNetworking: TCP/IP, BGP, OSPF, EIGRP, MPLS, VPLS, QoS, MulticastScripting & Automation: Ansible, Python (Netmiko, PyEZ), Bash, REST APIs, SaltStack OTHER Certifications: Network Security Professional Certification (Oracle, 2019), Juniper Networks Certified Design Specialist (JNCDS-SEC)Professional Memberships: Information Systems Security Association (ISSA) – Active MemberConferences: Speaker at Global Network Security Conference 2021 – 'Adaptive Threat Defense Strategies'Personal Projects: Open Source Contributor for the SecDevOps Toolkit project on GitHub Find out how good your resume is ummm here it. In this project Videos. OpenNMS 101 Training OpenNMS 102 Training OpenNMS on YouTube OpenNMS Meridian is a paid subscription plan that offers customers a stable version of OpenNMS to work with. Pricing. OpenNMS is available in two editions: OpenNMSOpenNMS - Browse /OpenNMS-Source at SourceForge.net
OpenNMS, also known as "Open Network Management System", is a free, open-source, and powerful network management and network monitoring solution. An enterprise network management system monitors and manages various services and devices from a central location. OpenNMS can be installed on Windows and Linux-based operating systems. OpenNMS uses SNMP and JMX to collect information from remote hosts. It can be installed on various operating systems, including Windows, Mac, Linux/Unix, and Solaris.This tutorial will teach us how to install and configure OpenNMS on an Ubuntu server.PrerequisitesA server running Ubuntu. I'll use Ubuntu 18.04 here.At least 2 GB RAM and 2 CPU cores.A root password set up on your server.First stepsBefore you start, you need to update your system to the latest version. You can do this by running the following command:apt-get update -yapt-get upgrade -yOnce your server is updated, restart it to apply the changes.Install JavaOpenNMS is written in Java. Therefore, you need to install Java for it to work. You can install Java JDK with the following command:apt-get install default-jdk -yAfter installation, check the version of Java with the following command:java --versionYou should get the following output:openjdk 11.0.4 2019-07-16OpenJDK Runtime Environment (build 11.0.4+11-post-Ubuntu-1ubuntu218.04.3)OpenJDK 64-Bit Server VM (build 11.0.4+11-post-Ubuntu-1ubuntu218.04.3, mixed mode, sharing)When you are done, you can proceed to the next step.Install PostgreSQLOpenNMS uses the PostgreSQL database to store its data. Therefore, you need to install PostgreSQL on your server. PostgreSQL is available by default in the Ubuntu 18.04 repository. You can install it by simply running the following command:apt-get install postgresql -yAfter installing PostgreSQL, you need to allow the root user to access this database. You can allow the root user by editing the pg_hba.conf file in the /etc/postgresql/10/main/ directory:nano /etc/postgresql/10/main/pg_hba.confFind the following lines:local all all peer# IPv4 local connections:host all all 127.0.0.1/32 md5# IPv6 local connections:host all all ::1/128 md5Replace all lines with the following lines:local all all trust# IPv4 local connections:host all all 127.0.0.1/32 trust# IPv6 local connections:host all all ::1/128 trustSave and close the file. Then restart the PostgreSQL service to apply all configuration changes:systemctl restart postgresqlYou can now check the status of the PostgreSQL service by running the following command:systemctl status postgresqlIf everything is ok, you should get the following output:? postgresql.service - PostgreSQL RDBMS Loaded: loaded (/lib/systemd/system/postgresql.service; enabled; vendor preset: enabled) Active: active (exited) since Wed 2019-08-28 06:19:04 UTC; 14s ago Process: 8653 ExecStart=/bin/true (code=exited, status=0/SUCCESS) Main PID: 8653 (code=exited, status=0/SUCCESS)Aug 28 06:19:04 ubuntu1804 systemd[1]: Starting PostgreSQL RDBMS...Aug 28 06:19:04 ubuntu1804 systemd[1]: Started PostgreSQL RDBMS.You can proceed to the next step when you are done with that.By default, OpenNMS is not available in the default repository of Ubuntu 18.04. Therefore, you need to add the OpenNMS repository to your system.To add the repository, first download the OpenNMS GPG key and add it using the following command:wget -O - | apt-key add -Next, add the OpenNMS repository to the APT source list file with the following command:nano /etc/apt/sources.listAdd the following lines to the end of the file:deb stable maindeb-src stable mainSave and close the file. ThenGitHub - OpenNMS/opennms: Enterprise-Grade Open
Level. See which processes consume the most network bandwidth and have connection problems.Dynatrace can be configured to monitor a range of applications and systems, including web servers, databases, and cloud infrastructure but its primary focus is on application-centric insights more so than network metrics.Dynatrace Interface:4 Open-Source Software with Network Bandwidth Monitoring If you're looking for an open-source network monitoring tool for network bandwidth monitoring, you have several options to choose from. In this section, we'll take a look at four of the best open-source software solutions for network bandwidth monitoring: Nagios XI, LibreNMS, Zabbix, and OpenNMS.These open-source software solutions offer a range of features and capabilities, including real-time traffic analysis, bandwidth usage reports, device tracking, alerting and notification, and more. They can help you optimize network performance, troubleshoot issues in real-time, and ensure efficient use of network resources.1. Nagios XI Nagios XI is a comprehensive IT infrastructure monitoring solution that includes features for monitoring various aspects of your network, including bandwidth usage. It allows you to monitor the performance and health of network devices, servers, applications, and other components.With Nagios XI, you can set up bandwidth monitoring to track the usage and performance of network interfaces. This includes monitoring metrics such as inbound and outbound traffic, bandwidth utilization, and other relevant network statistics. Nagios XI uses plugins and checks to collect and analyze data from network devices, providing real-time insights into bandwidth usage.Nagios XI Interface: 2. LibreNMS LibreNMS is an open-source network monitoring and management tool designed to provide comprehensive insights into the health and performance of network devices. The platform supports SNMP (Simple Network Management Protocol), allowing it to collect and monitor various performance metrics, including network bandwidth utilization.LibreNMS can track and display bandwidth usage over time, helping administrators identify trends, anomalies, and potential issues related to network traffic. It provides visual representations, graphs, and reports that showcase the historical and real-time utilization of network bandwidth.LibreNMS User Interface: 3. Zabbix Zabbix is a comprehensive open-source network monitoring solution that provides a range of features, including the ability to monitor and analyze network bandwidth utilization. Zabbix supports Simple Network Management Protocol (SNMP), which allows it to query network devices such as routers, switches, and other SNMP-enabled devices to retrieve information about network bandwidth usage.Zabbix User Interface: 4. OpenNMS OpenNMS is an open-source network management and monitoring solution that provides a range of features to monitor and manage network infrastructure. OpenNMS can analyze flow data, such as NetFlow or sFlow, to gather information about network traffic patterns, bandwidth utilization, and communication between devices. It collects performance data from network devices, allowing administrators to monitor metrics like bandwidth usage, latency, and packet lossOpenNMS User Interface: Overall, these four open-source software solutions offer robust network bandwidth monitoring capabilities to help optimize network performance, troubleshoot issues in real-time, and ensure efficient use of network resources. Whether you're a small business or a large enterprise, there's a solution on this list to suit your needs and budget."Top 5 Packet Capture Technologies for High-Level IT SecurityReleases opennms-forge/opennms-install - GitHub
Security, security policies, and firewall features within Juniper Networks' Junos OS.Master of Science in Network EngineeringSpecialized in Advanced Network Infrastructures, Part-timeThesis on 'Scalable Network Architectures and the Role of Software-Defined Networking' SKILLS Network Protocols: BGP, OSPF, MPLS, VPLS, IPv6, IPsec, JUNOS, SNMP, DHCPSecurity Technologies: SRX Series, vSRX, Sky ATP, Junos Space Security Director, Policy EnforcerNetwork Configuration: CLI Configuration, J-Web Interface, Juniper Device Manager, Automation ScriptsSoftware & Tools: Wireshark, OpenNMS, Nagios, SolarWinds Network Performance Monitor, Ansible OTHER Certifications: Juniper Networks Certified Associate – Junos (JNCIA-Junos), Cisco Certified Network Professional (CCNP)Professional Development: Attended annual Juniper Networks Next-Work Technology Forum (2019-2022)Industry Contributions: Published 'Assessing Network Security Risk Factors in Modern Enterprises' in TechNet MagazineTechnical Leadership: Led team of 5 engineers in the deployment of a secure, cross-country MPLS network for large retail client Find out how good your resume is ummm here it is -->Get your resume scoredWant to know how your juniper network engineer resume measures up? Our AI-powered tool simulates a hiring manager's review. It checks for key skills, experience, and formatting that recruiters in the networking industry look for.Upload your resume now for a free, unbiased assessment. You'll get a clear score and practical tips to improve your chances of landing interviews. This straightforward feedback helps you create a stronger application for juniper network engineering roles. Example #2 Juniper Network Engineer Resume Sample EXPERIENCE Designed, deployed, and maintained Juniper-based networks, increasing network performance by 15%Instituted effective monitoring on functionality of Juniper Networks devices, increased timely incident detection by 25%Led a team of 5 technicians in maintaining network infrastructure, augmenting team productivity by 10%Recommended network hardware upgrades that resulted in a 15% increase in network efficiencyLed the implementation of network optimization solutions, cutting down latency by 20%Established network redundancy measures, ensuring 99.9% network uptimeManaged system patches, firmware upgrade, ensuring 100% compliance with security standardsMonitored server and network systems with zero downtime during my tenureMitigated network outages, reduced the number of critical incidents by 15% EDUCATION Certified Juniper Networks Professional (JNCIP-ENT)Achieved certification while working full-time at Coached.comMaster of Science in Computer NetworkingThesis on Optimized Routing Algorithms for Scalable NetworksRecipient of Networking Excellence Award for outstanding thesis work SKILLS Networking Protocols: BGP, OSPF, MPLS, VPLS, VPN, IPv4/IPv6, QoSNetwork Configuration & Management: Junos OS, Cisco IOS, Network Automation, Ansible, Python Scripting, SNMPNetwork Security: Firewall Management, Intrusion Detection Systems (IDS), SSL/TLS, IPsec, Juniper SRXTools & Applications: Wireshark, JIRA, Confluence, Git, SolarWinds Network Performance Monitor, Nagios OTHER Certifications: Juniper Networks Certified Associate (JNCIA) (2015), Cisco Certified Network Associate (CCNA) (2013)Professional Development: Juniper Champion Program - Ingenious Champion LevelSpeaking Engagements: Panelist at Network World Conference, 'The Future of Enterprise Networking', 2019Technical Writing: Contributor to Networking Secured Journal, topics on 'Advances in Network Security', 'Streamlining Network Operations' Find. In this project Videos. OpenNMS 101 Training OpenNMS 102 Training OpenNMS on YouTube OpenNMS Meridian is a paid subscription plan that offers customers a stable version of OpenNMS to work with. Pricing. OpenNMS is available in two editions: OpenNMSComments
Update the repository and install OpenNMS with the following command:apt-get update -y apt-get install default-mta opennms -yWhen the installation is successfully completed, you can proceed to the next step.Create a database for OpenNMSBefore you create the OpenNMS database, you need to set a password for the postgres user. Execute the following command to set the password for postgres:passwd postgresType the desired password and press Enter, as shown below:Enter new UNIX password: Retype new UNIX password: passwd: password updated successfullyAfter setting a new password, you will be prompted to confirm the password whenever you want to access the PostgreSQL interactive shell.Log in as a postgres user with the following command:su - postgresOnce logged in, create a user and database for OpenNMS with the following command:createuser -P opennms createdb -O opennms opennmsNext, set a password for the Postgres superuser with the following command:psql -c "ALTER USER postgres WITH PASSWORD 'opennmspassword';"Finally, exit the Postgres shell with the following command:exitNext, you need to set the database settings for OpenNMS. You can do this by editing the opennms-datasources.xml file. This is where you set the database name, database user name, database user password, and postgres user for administrative access to PostgreSQL.nano /etc/opennms/opennms-datasources.xmlMake the following changes: Save and close the file when you are done. Then set the Java environment with the following command:/usr/share/opennms/bin/runjava -sIf everything works, you should see the following output:runjava: Looking for an appropriate JVM...runjava: Checking for an appropriate JVM in JAVA_HOME...runjava: Skipping... JAVA_HOME not set.runjava: Checking JVM in the PATH: "/etc/alternatives/java"...runjava: Did not find an appropriate JVM in the PATH: "/etc/alternatives/java"runjava: Searching for a good JVM...runjava: Found a good JVM in "/usr/lib/jvm/java-11-openjdk-amd64/bin/java".runjava: Value of "/usr/lib/jvm/java-11-openjdk-amd64/bin/java" stored in configuration file.Next you need to initialize the database. You can do this with the following command:/usr/share/opennms/bin/install -disYou should see the following output:Processing DiscoveryConfigurationLocationMigratorOffline: Changes the name for the default location from 'localhost' to 'Default'. See HZN-940.- Running pre-execution phase Backing up discovery-configuration.xml Zipping /usr/share/opennms/etc/discovery-configuration.xml- Running execution phase- Saving the execution state- Running post-execution phase Removing backup /usr/share/opennms/etc/discovery-configuration.xml.zipFinished in 0 secondsUpgrade completed successfully!Finally, you need to restart the OpenNMS service so that all configuration changes are applied:systemctl restart opennmsYou can check the status of OpenNMS with the following command:systemctl status opennmsYou should get the following output:? opennms.service - LSB: OpenNMS - Open Source Network Management System Loaded: loaded (/etc/init.d/opennms; generated) Active: active (running) since Wed 2019-08-28 06:40:19 UTC; 16s ago Docs: man:systemd-sysv-generator(8) Process: 14088 ExecStart=/etc/init.d/opennms start (code=exited, status=0/SUCCESS) Tasks: 172 (limit: 4915) CGroup: /system.slice/opennms.service ??15147 /bin/bash /usr/sbin/opennms start ??15148 /usr/lib/jvm/java-11-openjdk-amd64/bin/java --add-modules=java.base,java.compiler,java.datatransfer,java.desktop,java.instruAug 28 06:40:14 ubuntu1804 systemd[1]: Starting LSB: OpenNMS - Open Source Network Management System...Aug 28 06:40:19 ubuntu1804 opennms[14088]: Starting Open Network Management System: opennmsStarting OpenNMS: (not waiting for startup) okAug 28 06:40:19 ubuntu1804 opennms[14088]: .Aug 28 06:40:19 ubuntu1804 systemd[1]: Started LSB: OpenNMS - Open Source Network Management System.When you are done, you can proceed to the next step.Accessing OpenNMSOpenNMS is now installed and listening on port 8980. Now it is time to access the OpenNMS web interface. To do this, open your web browser and enter
2025-04-20OpenNMSOpenNMS is an open-source network monitoring platform that helps you visualize and monitor everything on your local and distributed networks. OpenNMS offers comprehensive fault, performance, and traffic monitoring with alarm generation in one place. Highly customizable and scalable, OpenNMS integrates with your core business applications and workflows.FeaturesFull inventory managementFlexible provisioning system provides many ways to interoperate with configuration management systems.Extensive data collectionWorks with many industry-standard data collection protocols with no need to write or maintain third-party plugins: SNMP, JSON, WinRM, XML, SQL, JMX, SFTP, FTP, JDBC, HTTP, HTTPS, VMware, WS-Management, Prometheus.Robust traffic managementSupports the following flow protocols: (NetFlow v5/v9, IPFIX, sFlow). 300,000+ flows/sec. BGP Monitoring support implementing the OpenBMP standards for BGP messages and metrics. Deep-dive analysis, enterprise reporting.Digital experience monitoringUse the OpenNMS Minion to monitor a service’s latency and availability from different perspectives.Robust configurationConfigure most features through the web UI or XML scripting, including thresholding, provisioning, event and flow management, service monitoring, and performance measurement.ScalabilityScale through Sentinels for flow persistence, Minions for Flow, BMP, SNMP trap, and Syslog ingest, and embedded ActiveMQ to Kafka message brokers.Enterprise reporting and visualizationCustomizable dashboards that you can export as a PDF. Resource graphs, database reports, charts. Define and customize complex layered topologies to integrate topology maps into your service problem management workflow.Install OpenNMSFor details on installing OpenNMS, see Install OpenNMS.TL;DR - If you just want to set up a simple non-production evaluation of OpenNMS Horizon on Linux, some basic install scripts are available at opennms-forge/opennms-installBuild OpenNMSFor details on how to build OpenNMS, see Build OpenNMS from source.
2025-04-21OpenNMS, also known as "Open Network Management System", is a free, open-source, and powerful network management and network monitoring solution. An enterprise network management system monitors and manages various services and devices from a central location. OpenNMS can be installed on Windows and Linux-based operating systems. OpenNMS uses SNMP and JMX to collect information from remote hosts. It can be installed on various operating systems, including Windows, Mac, Linux/Unix, and Solaris.This tutorial will teach us how to install and configure OpenNMS on an Ubuntu server.PrerequisitesA server running Ubuntu. I'll use Ubuntu 18.04 here.At least 2 GB RAM and 2 CPU cores.A root password set up on your server.First stepsBefore you start, you need to update your system to the latest version. You can do this by running the following command:apt-get update -yapt-get upgrade -yOnce your server is updated, restart it to apply the changes.Install JavaOpenNMS is written in Java. Therefore, you need to install Java for it to work. You can install Java JDK with the following command:apt-get install default-jdk -yAfter installation, check the version of Java with the following command:java --versionYou should get the following output:openjdk 11.0.4 2019-07-16OpenJDK Runtime Environment (build 11.0.4+11-post-Ubuntu-1ubuntu218.04.3)OpenJDK 64-Bit Server VM (build 11.0.4+11-post-Ubuntu-1ubuntu218.04.3, mixed mode, sharing)When you are done, you can proceed to the next step.Install PostgreSQLOpenNMS uses the PostgreSQL database to store its data. Therefore, you need to install PostgreSQL on your server. PostgreSQL is available by default in the Ubuntu 18.04 repository. You can install it by simply running the following command:apt-get install postgresql -yAfter installing PostgreSQL, you need to allow the root user to access this database. You can allow the root user by editing the pg_hba.conf file in the /etc/postgresql/10/main/ directory:nano /etc/postgresql/10/main/pg_hba.confFind the following lines:local all all peer# IPv4 local connections:host all all 127.0.0.1/32 md5# IPv6 local connections:host all all ::1/128 md5Replace all lines with the following lines:local all all trust# IPv4 local connections:host all all 127.0.0.1/32 trust# IPv6 local connections:host all all ::1/128 trustSave and close the file. Then restart the PostgreSQL service to apply all configuration changes:systemctl restart postgresqlYou can now check the status of the PostgreSQL service by running the following command:systemctl status postgresqlIf everything is ok, you should get the following output:? postgresql.service - PostgreSQL RDBMS Loaded: loaded (/lib/systemd/system/postgresql.service; enabled; vendor preset: enabled) Active: active (exited) since Wed 2019-08-28 06:19:04 UTC; 14s ago Process: 8653 ExecStart=/bin/true (code=exited, status=0/SUCCESS) Main PID: 8653 (code=exited, status=0/SUCCESS)Aug 28 06:19:04 ubuntu1804 systemd[1]: Starting PostgreSQL RDBMS...Aug 28 06:19:04 ubuntu1804 systemd[1]: Started PostgreSQL RDBMS.You can proceed to the next step when you are done with that.By default, OpenNMS is not available in the default repository of Ubuntu 18.04. Therefore, you need to add the OpenNMS repository to your system.To add the repository, first download the OpenNMS GPG key and add it using the following command:wget -O - | apt-key add -Next, add the OpenNMS repository to the APT source list file with the following command:nano /etc/apt/sources.listAdd the following lines to the end of the file:deb stable maindeb-src stable mainSave and close the file. Then
2025-04-21Level. See which processes consume the most network bandwidth and have connection problems.Dynatrace can be configured to monitor a range of applications and systems, including web servers, databases, and cloud infrastructure but its primary focus is on application-centric insights more so than network metrics.Dynatrace Interface:4 Open-Source Software with Network Bandwidth Monitoring If you're looking for an open-source network monitoring tool for network bandwidth monitoring, you have several options to choose from. In this section, we'll take a look at four of the best open-source software solutions for network bandwidth monitoring: Nagios XI, LibreNMS, Zabbix, and OpenNMS.These open-source software solutions offer a range of features and capabilities, including real-time traffic analysis, bandwidth usage reports, device tracking, alerting and notification, and more. They can help you optimize network performance, troubleshoot issues in real-time, and ensure efficient use of network resources.1. Nagios XI Nagios XI is a comprehensive IT infrastructure monitoring solution that includes features for monitoring various aspects of your network, including bandwidth usage. It allows you to monitor the performance and health of network devices, servers, applications, and other components.With Nagios XI, you can set up bandwidth monitoring to track the usage and performance of network interfaces. This includes monitoring metrics such as inbound and outbound traffic, bandwidth utilization, and other relevant network statistics. Nagios XI uses plugins and checks to collect and analyze data from network devices, providing real-time insights into bandwidth usage.Nagios XI Interface: 2. LibreNMS LibreNMS is an open-source network monitoring and management tool designed to provide comprehensive insights into the health and performance of network devices. The platform supports SNMP (Simple Network Management Protocol), allowing it to collect and monitor various performance metrics, including network bandwidth utilization.LibreNMS can track and display bandwidth usage over time, helping administrators identify trends, anomalies, and potential issues related to network traffic. It provides visual representations, graphs, and reports that showcase the historical and real-time utilization of network bandwidth.LibreNMS User Interface: 3. Zabbix Zabbix is a comprehensive open-source network monitoring solution that provides a range of features, including the ability to monitor and analyze network bandwidth utilization. Zabbix supports Simple Network Management Protocol (SNMP), which allows it to query network devices such as routers, switches, and other SNMP-enabled devices to retrieve information about network bandwidth usage.Zabbix User Interface: 4. OpenNMS OpenNMS is an open-source network management and monitoring solution that provides a range of features to monitor and manage network infrastructure. OpenNMS can analyze flow data, such as NetFlow or sFlow, to gather information about network traffic patterns, bandwidth utilization, and communication between devices. It collects performance data from network devices, allowing administrators to monitor metrics like bandwidth usage, latency, and packet lossOpenNMS User Interface: Overall, these four open-source software solutions offer robust network bandwidth monitoring capabilities to help optimize network performance, troubleshoot issues in real-time, and ensure efficient use of network resources. Whether you're a small business or a large enterprise, there's a solution on this list to suit your needs and budget."Top 5 Packet Capture Technologies for High-Level IT Security
2025-04-20Program.Using Cockpit to Manage Linux Servers GraphicallyFor the rare breed of sysadmins that do not like getting into the terminal, Cockpit is a god send for managing servers graphically.Linux HandbookAvimanyu BandyopadhyayM/MonitMonit Service Manager with Server specific stats in tabular formatMonit is a small Open-Source utility for managing and monitoring Unix systems. It has all features needed for system monitoring and error recovery and works as a watchdog with a toolbox on your server. As per their official documentation, M/Monit builds on Monit's capabilities and provides monitoring and management of all your Monit enabled hosts via a modern, clean and well-designed user interface which also works on mobile devices.NetdataNetdata Agent reporting server statsThe Netdata Agent is 100% open source and powered by more than 300 contributors. With Netdata, you can troubleshoot slowdowns and anomalies in your infrastructure with thousands of per-second metrics, meaningful visualizations, and insightful health alarms with zero configuration.You don't even need a virtual private server to deploy it. Netdata allows free accounts; you just have to connect your server to it. All the stats are stored on your account and you can view them in the dashboard. You also get notification for weird resource utilization. Linux DashLinux Dash is a simple and beautiful open source server monitoring web dashboard that includes all the generic server metrics. Apart from providing system status as shown below, it also provides system-specific basic information, network details, user accounts and details of existing applications.CheckmkCheckmk Main dashboard, viewable just after logging in with server stats and problem historyCheckmk provides a fast, effective and powerful monitoring of networks, servers, clouds, containers and applications. You can also monitor SSL certificates with Checkmk.The Raw Edition is Free and Open Source while their Enterprise Edition is available as a 30-day trial.Using Checkmk for Monitoring Your Linux Server InfrastructureA detailed guide on installing and configuring the free and open-source Checkmk Raw Edition for monitoring servers.Linux HandbookAvimanyu BandyopadhyayOpenNMSOpenNMS is the world's first enterprise grade network management application platform. The open-source model is called OpenNMS Horizon while the subscription-based model is called OpenNMS Meridian.NagiosNagios Core Features: Comprehensive Monitoring, Visibility, Awareness, Problem Remediation, Proactive Planning, Reporting, Multi-Tenant Capabilities and Extendable ArchitectureNagios offers an open source industry standard in IT infrastructure monitoring and alerting. Nagios Core is available free of cost.Nagios' paid tools are also offered via free trials.Nagios Open SourceNagios Paid ToolsNagios CoreNagios XINagios PluginsNagios Log ServerNagios FrontendsNagios FusionNagios AddonsNagios Network AnalyzerIcingaIcinga DashboardIcinga is an open-source computer system and network monitoring application originally created as a fork of the Nagios system monitoring application in 2009. The best way for you to begin here is the Icinga get started page.SensuSensu is based on a pipeline model to fill gaps in observability between metrics, logging, & tracing. Sensu Go's features are pretty impressive. It is Open Source and offers upto a hundred maximum nodes under its free plan.Their documentation includes a step-by-step guide to deploy Sensu in production necessary to get you started.LibreNMSLibreNMS FeaturesLibreNMS is a fully featured, open-source network monitoring system which includes
2025-04-13Observium is an open source, low-maintenance, auto-discovering network monitoring tool for operating systems and network hardware. It supports Linux and Windows operating systems and network hardware like Cisco, Juniper, Brocade, Foundry, HP.Observium is based on AMP (Apache, MySQL, and PHP) stack and it collects the monitoring metrics via SNMP protocol. It uses RRDtool to make a graph of metrics collected from SNMP. Observium can also collect data using CDP, FDP, LLDP, OSPF, BGP, and ARP protocols.Observium comes with a simple yet powerful interface to monitor devices, and it’s alerting system can be highly customized to receive alerts over an email, IRC, slack and more.This tutorial covers the installation of Observium on CentOS 7 / Ubuntu 16.04 / Debian 9 and collecting usage metrics from Linux machines via SNMP protocol.PrerequisitesLog-in as the root user or switch to root user as commands we run during the installation process requires root privilege.su -ORsudo su -We first install Webtatic, OpenNMS, and EPEL repositories on CentOS 7 / RHEL 7.rpm -ivh -ivh -ivh and Configure MySQL / MariaDBAs I said, Observium needs AMP stack, so install MariaDB as a database server, a fork of MySQL.### CentOS 7 / RHEL 7 ###yum -y install mariadb-server mariadb### Ubuntu 16.04 ###apt-get updateapt-get -y install mysql-server mysql-client### Debian 9 ###apt-get updateapt-get -y install mariadb-server mariadb-clientTo start MariaDB, run:### CentOS 7 / RHEL 7 ### systemctl start mariadb### Debian 9 / Ubuntu 16.04 ###systemctl start mysqlIn Ubuntu 16.04, the installer will prompt you for setting the MySQL root password.To stop MariaDB, run:### CentOS 7 / RHEL 7 ###systemctl stop mariadb### Debian 9 / Ubuntu 16.04 ###systemctl stop mysqlTo restart MariaDB, run:### CentOS 7 / RHEL 7 ###systemctl restart mariadb### Debian 9 / Ubuntu 16.04 ###systemctl restart mysqlTo check the status of MariaDB, run:### CentOS 7 / RHEL 7 ###systemctl status mariadb### Debian 9 / Ubuntu 16.04 ###systemctl status mysqlTo autostart at system startup, run:### CentOS 7 / RHEL 7 / Debian 9 ###systemctl enable mariadb### Ubuntu 16.04 ###systemctl enable mysqlOnce the MySQL / MariaDB installation is complete, run mysql_secure_installation command to secure the database server.Create Database for Observiumlogin to MySQLmysql
2025-04-17