Simple automated installation

Overview Copied

This page describes the procedure to undertake an automated fresh installation of the Opsview Monitor software, which is our recommended method.

Note

If you are looking at upgrading or migrating your current installation, please refer to Migrating Opsview Monitor 6.x to see which page is better suited for your scenario.

A number of considerations:

• The automated installation method will always install the latest available version of Opsview Monitor.
• The automated installation method assumes you have a new operating system installation since the Opsview Monitor installation may overwrite or remove some existing packages and configurations.
• Configure a hostname which can be resolved by the host’s DNS settings, for example opsview.example.com should resolve to the IP of the server.
• The system Python alternatives will be modified during deployment. Additionally, if /usr/bin/python3 is not found, then Python 3 will be installed.
• For RHEL 7/8/9 systems, ensure the subscription manager is configured to allow system repositories. Verify that the disable_system_repos option is set to 0 in the /etc/dnf/plugins/subscription-manager.conf file on each system.
• Make sure you check the software requirements, particularly the hostname requirements.

Note

We recommend you update your system to the latest OS packages before installing Opsview Monitor.

Supported operating systems Copied

Please refer to the list of supported operating systems.

Authorisation Copied

Please ensure that any proxies are unset and Opsview addresses are whitelisted. For more information, see Planning your System.

Installation Copied

To install, run:

curl -sLo- https://deploy.opsview.com/6 | sudo bash -s -- -p PASSWORD -s SOFTWARE_KEY -y

• -p — set up the admin password.
• -s — activate the software with the provided key.
• -y — skip any installation prompts.

To learn about all the options available, you can check the help flag:

curl -sLo- https://deploy.opsview.com/6 | sudo bash -s -- -h

Optional SHA256 checksum verification Copied

You can also verify the script before running it by comparing the checksum you get with:

curl -L https://deploy.opsview.com/6 > opsview_deploy
sha256sum opsview_deploy

Ensure the returned string matches the following:

43a2585239f3d9f55691d8581830bffbf0994c3e7f001c090a40dc608436ca0e

You can then run the installation (and optionally provide the arguments):

sudo bash ./opsview_deploy -p PASSWORD -s SOFTWARE_KEY -y

NGINX change (SSL Certificates) Copied

Nginx is designed to use only one file that is a combination of your SSL Certificate (server.crt, if you have not renamed it) and your IntermediateCA file. Therefore you need to combine the your SSL certificate file and the IntermediateCA.crt into one single concatenated file in order for Nginx to start successfully.

If you find that your homepage/web-page is not loading up correctly please consider this change may need to be made for Nginx to start (the Opsview component that starts Nginx is opsview-webserver):

cd /opt/opsview/webapp/etc/ssl/
cp -p server.crt server.crt.backup

Replace the below file names appropriately:

cat SSL_Certificate_filename IntermediateCA.crt_filename > server.crt

Now that this is complete, opsview-webserver should start without issue.

Logging in Copied

During the installation, a single administrative user will have been created. The credentials for this user are:

username: admin
password: <password supplied during installation>

After the system is activated, carry out a reload by navigating to Configuration > Apply Changes and click Apply Changes.

Problems with installations Copied

If you encounter any problems with the installation, it is safe to rerun the command again.

You are also able to continue the installation from a checkpoint for the following reasons:

• Cancelled installations, which can be done by pressing CTRL+C.
• Failed installations, for example, a network connection failure.

The automated installation consists of four steps that can be partially executed:

With that in mind, we can then use the -A and -O flags to install up to a certain step or install only that step respectively. While the examples before would run all the four steps in order, this one would rerun all four steps:

curl -sLo- https://deploy.opsview.com/6 | sudo bash -s -- -A inst

This second example would just run the firewall step:

curl -sLo- https://deploy.opsview.com/6 | sudo bash -s -- -O fire

If you entered your software key incorrectly (which will fail at the inst step), the command below will remove the incorrect key, re-create the configuration file and re-run the installation:

sudo rm /opt/opsview/deploy/etc/user_vars.yml
curl -sLo- https://deploy.opsview.com/6 | sudo bash -s -- -p PASSWORD -s SOFTWARE_KEY -y -O boot,inst