This did not solve my problem though! Has anyone figured out where âhassâ is located on the all-in-one installer? Thatâs what Iâm using. For Debian or Ubuntu systems, run this command: sudo systemctl restart apache2. This exits the program, says âyesâ I want to save it, and then confirms that you want to save it in the same place. To restart the web server, run this command: For REHL or CentOS systems: sudo systemctl restart httpd. Then do CTRL+X and type âyâ and the hit enter. I have seen many posts on the internet about this and they all mention the following two solutions: Manually edit the /etc/hosts file on every server. Since the hostname is missing and your system is not able to figure out the hostname and thus it throws the error âsudo: unable to resolve hostâ. Other way to resolve the issue is running docker with. But -link is deprecated it will be remove in the future. Generally when you are troubleshooting HAProxy, you will use these commands in the order indicated here, and then examine the log file for specific diagnostic data. So it not support resolve by hostname in default bridge network, then I added -link to docker run it can resolve the host successfully. Introduction There are three main commands, and a common log location that you can use to get started troubleshooting HAProxy errors.Everytime I type a 'sudo' command, I get the following: sudo: unable to resolve host ip-xxx-xx-x-xxx. On a user-defined bridge network, containers can resolve each other by name or alias. The â#â makes it so that the computer will skip that line, but if you needed to reference what you changed in the future itâs still there. I have a problem when launching any instance (from and AMI) within a particular VPC. I pasted it down here again for your reference: # This is a simple service file for systems with systemd to tun HA as user.Ä«asically put a â#â in front of where it currently says âExecStartâ and then make a new line and put in âExecStart=/usr/local/bin/hassâ. And check the journal ( sudo journalctl -eu nginx) to find out why it fails to start. If Nginx fails to start, run sudo nginx -t to find if there is anything wrong with your configuration file. ânanoâ is kind of like opening a document in Microsoft Word. Start Nginx with sudo systemctl start nginx. âsudoâ is what gives you permission to go into various files. About the 'unable to resolve host' issue, that is just a warning. I can walk you through how to change the file, but unfortunately it didnât actually fix my problemÄisclaimer: I apologize in advance for my rudimentary language describing everything, like I said Iâm new at this.Ä«asically what you want to do is type in:
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