Centos 8 Download Iso 64 Bit Minimal

[Riitta Palazzo]

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I am trying to connect to a new CentOS 7 server to do some performance testing. It is a minimal install and at this point the only things installed / configured are to test RAID performance, Java 1.7 and Wowza Media Server which has a web service that runs on port 8088. I am able to SSH / Sftp into the server all I want, but can't connect to the port 8088 from my windows computer.

The 2 computers are on the same network, and the switch has that port open as I can tie into the Ubuntu server sitting next to it on port 8088. Using the lynx command line browser on the CentOS server, I can open the site using localhost, or it's IP address as well. There are no rules configured by me in iptables or /etc/hosts.deny. I have looked at all the tips I could think of to see what is open using netstat, or nmap and don't see what is going on. What am I missing here?

To specify which packages will be installed, select Software Selection at the Installation Summary screen. The package groups are organized into Base Environments. These environments are pre-defined sets of packages with a specific purpose; for example, the Virtualization Host environment contains a set of software packages needed for running virtual machines on the system. Only one software environment can be selected at installation time.

For each environment, there are additional packages available in the form of Add-ons. Add-ons are presented in the right part of the screen and the list of them is refreshed when a new environment is selected. You can select multiple add-ons for your installation environment.

Add-ons listed above the horizontal line are specific to the environment you selected. If you select any add-ons in this part of the list and then select a different environment, your selection will be lost.

The availability of base environments and add-ons depends on the variant of the installation ISO image which you are using as the installation source. For example, the server variant provides environments designed for servers, while the workstation variant has several choices for deployment as a developer workstation, and so on.

The installation program does not show which packages are contained in the available environments. To see which packages are contained in a specific environment or add-on, see the repodata/*-comps-variant.architecture.xml file on the CentOS Installation DVD which you are using as the installation source. This file contains a structure describing available environments (marked by the tag) and add-ons (the tag).

The pre-defined environments and add-ons allow you to customize your system, but in a manual installation, there is no way to select individual packages to install. If you are not sure what package should be installed, select the Minimal Install environment. Minimal install only installs a basic version of CentOS with only a minimal amount of additional software. This will substantially reduce the chance of the system being affected by a vulnerability. After the system finishes installing and you log in for the first time, you can use the Yum package manager to install any additional software you need. For more details on Minimal install, see the Installing the Minimum Amount of Packages Required section of the Red Hat Enterprise Linux 7 Security Guide.

Alternatively, automating the installation with a Kickstart file allows for a much higher degree of control over installed packages. You can specify environments, groups and individual packages in the %packages section of the Kickstart file. See Package Selection for instructions on selecting packages to install in a Kickstart file, and Kickstart Installations for general information about automating the installation with Kickstart.

Some automated processes on your CentOS system use the email service to send reports and messages to the system administrator. By default, the email, logging, and printing services do not accept connections from other systems.

You can configure your CentOS system after installation to offer email, file sharing, logging, printing, and remote desktop access services. The SSH service is enabled by default. You can also use NFS to access files on other systems without enabling the NFS sharing service.

All CentOS Documentation content available under CC-BY-SA 3.0. This page was built using a modified version of the Antora default UI. The source code for this UI is licensed under the terms of the MPL-2.0 license.

I tried to fire the installation modifying the local inventory without the ERP as in here . In this case everything run without any problems. @mstreeton it would be interesting if you could try and see if you get the same result as me when installing without the ERP.

Just to confirm the install inventory you used does work, obviously without Odoo. I still cannot locate the lines to remove that @eddyprasetyo mentioned, will have to wait until someone comes up with a proper solution for this.

@mddubey @bhiravabhatla I see you are involved in some development on this board, is this issue above known about/raised and is someone actually looking into it? As right now clean installs using CentOS 7.6 minimal are not working for those of us wanting to try this.

Note - This has to be done during the installation whenever the installation fails after a service is installed and fails to start/stop. Rerun the installation after changing init script. The service configs come as part of respective rpms - so we cant alter them before running the installer.

Hi @bhiravabhatla , thanks for the detailed reply.I tried workaround a) in centOS 7.6 with defaults and I get the same error as described by @mstreeton above.Furthermore, I tried to stop and start the services using bahmni command line, and I get the following error:

Although all bahmni services (openmrs, open-elis, mysql, postgres, httpd) are running, the page of bahmni, openmrs and openelis do not open in the browser after we stop and start service using bahmni command line. Tried to reboot and I had the same problem, i.e. those services are running but I cannot open the pages in the browser.

The shadowsocks-libev package exist in a 3rd party YUM repo, therefore the repo needs to be added first. Put the following content inthe file /etc/yum.repos.d/shadowsocks.repo (you need to create the file)

The default configuration file for shadowsocks-libev is /etc/shadowsocks-libev/config.json. A sample configuration is already given.If you want to have a setup with password protection, you can change the configuration file to something like this

In this post, I included all the steps I took to setup a Shadowsocks service on a fresh installed CentOS 7 minimal. I hope that you findmy post useful. You could leave a comment if you run into any issue with the commands I showed above.

Our business is in email groupware using SmarterMail Enterprise on Windows servers and Zimbra on centos/ubuntu for orgs with limited funds. I will also add that about 99% of our clients DNS are hosted on our account with cloudns.net. Removing at least the email services from the minimal install helps a lot.

Why not build a SLES jeOS on SUSE Studio, it does add the installer option. Else just use the SLES DVD, you can configure as required to get to a minimal install, you will probably also need the SDK as well for any development packages.

In my free time I like to experiment with various devops tools and technologies, all of which I've provisioned on Centos 7. I also like to write a fair bit of automation for them. So when the new release came out I figured that this would be a perfect opportunity to tear everything down and start from scratch to see if I could get things back to the same state. I think this is a great practice to test the robustness of your infrastructure and find areas that could use improvement. It's probably a bad idea to do something this extreme in production, but if it's out of your house for fun... who really cares what breaks, right?

For the installation I chose minimal server as I only ssh into this machine so a GUI is just a waste of resources. To connect to my network I generally use NetworkManager and the included cli tool nmcli as this is the recommended tool.

There was a lot more here, but I took it out for simplicity. The real thing to note here, if you have this problem is 'wifi' plugin not available;. Specifically this means you are missing the plugin NetworkManager-wifi. To verify you can run the following and not that it does not appear.

Ethernet here will not work either as there more additional missing plugins. So how does when install network plugins without any internet? The only way I've managed to do so is by pulling it from the iso used to install. In my case installed via usb, but whichever way you used you should be able to mount the iso as a device to pull it from. This will require root privileges.

Making the /media/CentOS directory and mounting the device at this location is necessary as dnf has this location preset as a repo to install base OS packages from. This may be used as part of the initial installation process but idk. You will have to verify which device your iso is registered as. In my case it was /dev/sdb but this will not always be the case. The first partition for the CentOS install seems to be the boot device and the second is actual packages and such.

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