w_m0zart

I am sorry I did not read the first post. After searching via google, I stumbled directly upon the earlier post from user pingmanping as I found exactly the same problem. However, I solved the problem in the meantime: The IP-address for the web interface was wrong: instead of https://127.0.0.1:8843 it should have been https://127.0.0.1:8443 After changing that URL the Unifi Controller webpage was served correctly. Then, in order to configure the access points, I had to configure at the left bottom, at SETTINGS -> Controller -> CONTROLLER SETTINGS -> Controller Hostname/IP, the IP address of the Host and Enable the "Override inform host with controller hostname/IP". After that all worked smoothly.

@pingmanping I get exactly the same message in my browser, when trying to open: https://127.0.0.1:8843 UniFi Controller is starting up... Please wait a moment When refreshing the webpage, or trying further times, it is getting worse: HTTP Status 400 - Bad Request I am running the linuxserver/unifi-controller:LTS in docker, tried it both on a Ubuntu 16.04 LTS as a 18.04 LTS. Both have the same result. This is my installation history to this: ## steps to install docker and linuxserver-unifi-controller on ubuntu 16.04 LTS / 18.04 LTS # installing docker sudo apt-get update sudo apt-get install apt-transport-https ca-certificates curl gnupg-agent software-properties-common sudo apt-key fingerprint 0EBFCD88 sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" sudo apt-get update sudo apt-get install docker-ce docker-ce-cli containerd.io # fix "permission denied while trying to connect to the Docker daemon socket at unixL///var/run/docker.sock ..." sudo usermod -a -G docker $USER # installing docker-compose for processing .yml files # for ubuntu 16.04 LTS sudo curl -L "https://github.com/docker/compose/releases/download/1.18.0/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose # for ubuntu 18.04 LTS sudo curl -L "https://github.com/docker/compose/releases/download/1.24.0/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose # set permission for docker-compose sudo chmod +x /usr/local/bin/docker-compose # docker-compose bash completion sudo curl -L https://raw.githubusercontent.com/docker/compose/1.24.0/contrib/completion/bash/docker-compose -o /etc/bash_completion.d/docker-compose # create a data volume for unifi cd $HOME/Backup/docker/unifi/ mkdir data # create in the same directory a docker-compose.yml file with following contents: version: "2" services: unifi-controller: image: linuxserver/unifi-controller:LTS container_name: unifi-controller environment: - PUID=1000 - PGID=1000 volumes: - $HOME/Backup/docker/unifi/data:/config ports: - 3478:3478/udp - 10001:10001/udp - 8080:8080 - 8081:8081 - 8443:8443 - 8843:8843 - 8880:8880 - 6789:6789 restart: unless-stopped # and start the docker with command: docker-compose up # ergo: HTTP Status 400 - Bad Request # ??? The next steps were originally in this post and were an assumption to partly fix web access issues, but did not help after all and can be completely left out: # fix further issues in the shell (there as user root): docker exec -it unifi-controller bash # while in the docker shell do apt update etc. apt update apt upgrade # install vi: apt install vim # make sure mongod is not confused with wrong commands. Modify /usr/bin/mongod: # see: https://community.ui.com/questions/Unifi-controller-on-Ubuntu-18-04/93b00b88-7542-40ba-bb0b-a80a84415e1d cd /usr/bin mv mongod mongod.bin # replace mongod with following three lines, using vi: #!/bin/bash cleaned_args=$(echo $* | sed -e 's/--nohttpinterface//') exec /usr/bin/mongod.bin ${cleaned_args} # then make executable: chmod +x mongod # now restart the docker (press ctrl+c in the other docker window, and repeat the last command) In the log files, I do not find a clue. in /usr/lib/unifi/logs/server.log it looks like it is running fine, since it is receiving an event from the access point: ... [2019-07-13 11:21:32,944] <discover> INFO event - [event] AP[fc:ec:da:68:68:ee] was discovered and waiting for adoption ... It looks like there is just something wrong configured with the web server. But so far I have no clue yet. I have spent already more than two days troubleshooting this, read almost everything I could find about unifi and a HTTP Status 400 - Bad Request error. Can someone help here? Addendum 1: Problem solved: click here > to find the solution. < Addendum 2: Moved the part above starting with: "fix further issues..." out of the main text, to clarify that these instructions have become obsolete. === sources === * https://hub.docker.com/r/linuxserver/unifi-controller * https://stackoverflow.com/questions/48957195/how-to-fix-docker-got-permission-denied-issue * https://base64.co.za/unifi-db-server-info-db-dbserver-stopped-unifi-controller-solved/ * https://community.ui.com/questions/Unifi-controller-on-Ubuntu-18-04/93b00b88-7542-40ba-bb0b-a80a84415e1d