Ubiquiti unifi контроллер linux

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Очень хорошо для офисной или небольшой корпоративной сети,

но мало для провайдера.

На тесте было три UniFi AP, под сервер использовался:

Intel(R) Pentium(R) 4 CPU 3.06GHz HT, RAM 2Ggb, HDD 160 Ggb.
OS: Ubuntu Studio 10.10 x86 (рекомендую не ставить х64, так как есть проблемы с установкой).

Инструкция по установке:

1. Устанавливаем из пакетов mongoDB и dhcp3-server, так как он нужен для сервера управления. Настроить dhcp3-server очень просто. Выкладываю свой конфиг:

subnet 192.168.1.0 netmask 255.255.255.0 <

# Прописываем диапазон выдаваемых адресов от и до:

range 192.168.1.10 192.168.1.30;

# И шлюз по умолчанию:

option routers 192.168.1.1;

# Привязываем точки доступа каждую к своему адресу:

hardware ethernet 00:27:22:1e:11:11;

hardware ethernet 00:27:22:1e:11:12;

hardware ethernet 00:27:22:1e:11:13;

Следующий файл конфигурации:

# Прописываем интерфейс, который смотрит у нас на точки доступа:

# service dhcp3-server start (должен написать [OK])

Dhcp3-server запущен, можно приступать к установке UniFi controller.

2. Правим /etc/apt/sources.list . Добавляем репозиторий:

deb https://www.ubnt.com/downloads/unifi/distros/deb/maverick maverick ubiquiti

3. Добавляем в терминале через sudo GPG key:

sudo apt-key adv —keyserver keyserver.ubuntu.com —recv C0A52C50

4. Устанавливаем пакет UniFi:

apt-get install unifi

После установки, рекомендую выключить репозиторий, так как могут возникнуть проблемы с установкой пакетов. Если ошибок не выскочило, то система установлена и уже даже работает.

5. После установки заходим на https://localhost:8080/, либо на https://IP-адрес:8080/, подтверждаем сертификат, и входим в систему через Ubiquiti UniFi Wizard. Думаю, для Вас не составит труда разобраться, что и как.

Необходимо ещё настроить интерфейс, в который включен AP:

# ping 192.168.1.20, точка должна ответить.

6. Подключаем, если ещё не подключили, в систему UniFi AP. Если они не были включены, или были, но визард контроллера их не нашёл, необходимо зажать на 5 секунд кнопку сброса. После определения, система прошивает AP в прошивку версии контроллера, поэтому не нужно бояться, что точка около 5 мин не идентифицируется, и ГЛАВНОЕ не выключайте её.

Настройка утсройства:

Заходим в систему Settings → Wireless Network → Create.

Прописываем SSID, например Office, выставляем шифрование и ключ. Режим гостевой не включал за ненадобностью.

А теперь очень важный момент — настройка Vlan. После установки Vlan, например 111, на сетевом интерфейсе его необходимо тоже добавить. По умолчанию пакет не установлен в системе, так что выберите пакет vlan в менеджере пакетов либо из командной строки:

После успешной установки:

Про добавление в автозагрузку настройки Vlan-ов читайте в google или на форумах.

Создаём вторую сеть, так же как и первую:

заходим в систему Settings → Wireless Network → Create;

прописываем SSID, например Buhgalteriya, выставляем шифрование и ключ.

Теперь мы имеем 2 SSID, 2 Vlan. Добавить можно ещё 2, по своему усмотрению.

Произведём необходимые настройки DHCP для автоматического подключения абонентов. Даём офисным работникам ключ сети для SSID Office и бухгалтерии ключ сети, также в настройках контроллера можно выставить приоритет для каждой подсети. Предположим, что бухгалтеру важнее поработать с Банк-Клиентом, чем офисному работнику покачать фильмы, поэтому отдаём приоритет в HIGH в настройках UniFi контроллера, там где мы прописывали SSID и Vlan.

Проверено и работает, абонент который подключен к SSID Office, не увидит никаким образом пользователя из бухгалтерии и наоборот, так как у каждого свой Vlan на уровне контроллера.

В конце хотелось бы добавить преимущества Ubiquiti UniFi:

эргономичность и привлекательный дизайн;

поддержка Multi-SSID (наконец-то дождались).

Контроллеру необходимо где-то быть установленным (тут достаточно и БУ компьютера). Если в офисе есть сервер, то использовать можно его, но всё ПО написано на JAVA, что не есть лёгким в обработке.

Для провайдеров эти устройства подойдут разве что для покрытия помещения, но в прошивке AP, которая будет работать без контроллера и его функционала.

Вывод. Если в дальнейшем в настройках контроллера появится возможность группировать AP по зонам с добавлением на группы Vlan-ов, а также появятся модели AP уличного типа, то Ubiquiti Networks выйдет на рынок с решением для покрытия городских сетей, что при нынешних ценах на оборудование других брендов будет очень выгодно небольшим провайдерам, имеющим лицензию на частоту 2,4 Ггц.

И маленькое пожелание: хотелось бы увидеть аппаратное решение контроллера данного производителя и расширение функционала.

Валерий Бурец специально для ASP24.

Источник

Установка UniFi Controller на Ubuntu

Для управления Wi-Fi точками доступа требуется установить на сервер UniFi Controller. Контроллер помогает конфигурировать точки доступа, настраивать бесшовный роуминг и обновлять прошивки точек. Для дома или небольшого офиса — то что надо. Дёшево и сердито. Ubuntu Server может быть виртуальным.

Когда я впервые писал эту заметку, то Ubuntu Server был 14-й, могу добавить, что инсталляция на Ubuntu Server 16 ничем не отличается.

Добавляем на сервер два репозитория:

echo ‘deb http://www.ubnt.com/downloads/unifi/debian stable ubiquiti’ | sudo tee -a /etc/apt/sources.list
echo ‘deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen’ | sudo tee -a /etc/apt/sources.list

Добавляем ключи к репозиториям:

sudo apt-key adv —keyserver keyserver.ubuntu.com —recv C0A52C50
sudo apt-key adv —keyserver keyserver.ubuntu.com —recv 7F0CEB10

Обновляем кеш и ставим контроллер:

sudo apt-get update
sudo apt-get install unifi

Дальнейшее конфигурирование осуществляется через веб-интерфейс. Если контроллер и точки доступа в одной подсети, то они увидят друг друга.

Если вам понравилась статья, то ставьте 👍🏻 каналу.
Пишите комментарии, задавайте вопросы, подписывайтесь.

Источник

How to install the UniFi Controller on Ubuntu

POST UP TO DATE 19/08/2015

Ubiquiti UniFi is properly supported on Ubuntu and Debian, breaking away from being Windows only. Being on Linux also reduces a lot of overhead that Windows typically laid on. The installation instructions provided by Ubiquiti aren’t the best so here’s my take on it.

I will be using a freshly installed Ubuntu 14.04.1 LTS. I previously had issues on installing to a dirty Ubuntu image I’ve been using as a do-it-all template. There is a section below where I was able to work out those issues though if you are also facing them.

Add the repository and GPG keys

To install the controller you will need to add the Ubiquiti repository to your apt sources list. This one liner does that for you:

Next you will need to add the GNU Privacy Guard (GPG) keys for UniFi and MongoDB (used to store your users and WiFi statistics within the UniFi controller). The GPG keys verifies the genuinity of who you will be downloading from during the installation. Here’s another one liner to add both (Ubiquiti first then MongoDB):

Now perform update to ensure Ubuntu recognises the repository:

Finally the big moment — installing the UniFi controller.

It will install a bunch of dependencies with it including Java 6, MongoDB, Tomcat and a Java SSL certificate tool.

As of August, the unifi-beta and unifi-rapid packages are obsolete.

Access the web interface

If everything went smoothly you should be able to access the controller through your web browser: https://unifi-server-here:8443

Depending on the version installed, you will be taken to the setup wizard. You’re done!

Determine the problem

A good start would be to go through the system logs and google the issue:

Just like any other service in Ubuntu, UniFi can be stop, started and restarted.

Java Home not found

This issue can be tricky. UniFi cannot access Java to run Tomcat (its web server). To check if you have Java, simply run:

If nothing appears you do not have Java. The latest version of UniFi supports Java 8. To install Java, follow this guide from Digital Ocean.

If you do have Java (or installed it now), you will have to edit the UniFi startup script to point out the location of Java. Open the startup script:

Change the ‘JAVA_HOME’ location to your new Java location:

Keystore file missing / java.io.FileNotFoundException

When going through the log file you may find the error:

This error means that the ‘keystore’ file is missing, resulting in Tomcat not being able to start up. The keystore file is responsible for encrypting your connection (HTTPS/SSL).

Generate a new keystore file, answering blank to every question including password:

Restart UniFi when successful and try accessing the web interface again.

Источник

davecoutts / unifi_ubuntu_2004.sh

# Install Ubiquiti Unifi Controller on Ubuntu 20.04.

# As tested on a fresh install of ubuntu-20.04.1-live-server, August 22nd 2020.

# Thanks to https://gist.github.com/tmuncks for posting the updated install steps.

sudo apt update

sudo apt install —yes apt-transport-https

echo ‘ deb https://www.ui.com/downloads/unifi/debian stable ubiquiti ‘ | sudo tee /etc/apt/sources.list.d/100-ubnt-unifi.list

sudo wget -O /etc/apt/trusted.gpg.d/unifi-repo.gpg https://dl.ui.com/unifi/unifi-repo.gpg

sudo apt update

sudo apt install —yes openjdk-8-jre-headless unifi

sudo apt clean

sudo systemctl status —no-pager —full mongodb.service unifi.service

# Now log into https://unifi_controller_hostname:8443/

# # ————————————————————————————————————————

# # Previous install steps from when unifi still required mongodb-server

# # unifi has since been updated to work with mongodb-server 3.6. Which is available from the Ubuntu 20.04 main repository.

# # ————————————————————————————————————————

# sudo apt install —yes ca-certificates apt-transport-https

# echo ‘deb https://www.ui.com/downloads/unifi/debian stable ubiquiti’ | sudo tee /etc/apt/sources.list.d/100-ubnt-unifi.list

# sudo apt-key adv —keyserver keyserver.ubuntu.com —recv 06E85760C0A52C50

# wget -qO — https://www.mongodb.org/static/pgp/server-3.4.asc | sudo apt-key add —

# echo ‘deb https://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.4 multiverse’ | sudo tee /etc/apt/sources.list.d/mongodb-org-3.4.list

# sudo apt-mark hold openjdk-11-*

# sudo apt update

# # mongodb 3.4 dependency

# wget http://security.ubuntu.com/ubuntu/pool/main/o/openssl1.0/libssl1.0.0_1.0.2n-1ubuntu5.3_amd64.deb -P /tmp

# sudo apt install —yes /tmp/libssl1.0.0_1.0.2n-1ubuntu5.3_amd64.deb

# rm /tmp/libssl1.0.0_1.0.2n-1ubuntu5.3_amd64.deb

# sudo apt install —yes mongodb-org

# sudo apt install —yes unifi

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nugget commented May 9, 2020

Thanks so much for this!

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goldengit commented May 31, 2020

Thanks for this — got me pointed in the right direction with install — had to edit JRE path before unifi service successfully launched — see here:

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chucklebrother commented Jun 15, 2020 •

no jre8 installed, not sure I liked the idea of messing with the init script as per goldengit’s instructions especial as the init script seemed aware of the architectural path names that the linked post addresses.

Given that the init script seems aware that it needs to specify architecture, and seem fairly specific about wanting java 8 I thought I’d run:

sudo apt install openjdk-8-jdk

This seems to have worked and I got the unifi controller landing page and successfully imported my backup from the controller on my previous server.

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jbloz7 commented Jun 19, 2020

Installing Java worked for me too.

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ThomasLobker commented Jun 19, 2020

For me downgrading MongoDB was not necessary. I currently have version 3.6.9 installed from the Ubuntu 20.04 repository.

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Flurkmark commented Aug 15, 2020

Just posting to preserve my findings for posterity, maybe someone with similar issues will find this.
Ubuntu 20.04. Got it working by changing the init-scripts as stated above. Stopped working after reboot. Server only binds ipv6, and db stopping.

Fixes:
Add to init string:

Also, /usr/lib/unifi/run is linked and gets broken after reboot. I just created it as a directory in place. You could off course just re-link it proper.

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tmuncks commented Aug 22, 2020

For me, this is all that was needed on a clean 20.04 install:

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davecoutts commented Aug 22, 2020

Thanks all for the notes and feedback.

It would seem that the Unifi Controller has been updated since I first released the gist 4 months ago.
mongodb-server

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Smugger21 commented Sep 13, 2020 •

I have to run:
sudo java -jar /usr/lib/unifi/lib/ace.jar discover

In order to get the service to even start up
( To get the system.properties file to generate )
Otherwise it errors out saying «file or folder not found» in the log for the Unifi Service
Just though I would post this.

Otherwise all the other steps work as posted.

So here is my setup process:

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firecat53 commented Sep 18, 2020

Thanks! Finally able to update my last container to 20.04 base.

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tonyappleton commented Oct 30, 2020

Worked like a charm — thank you!!

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Zilog-80 commented Dec 7, 2020

Works great thank you.

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mephibosheth commented Dec 21, 2020

Just gotta say, «Thank you!» Done in 10 minutes and with no industrial language. Just what the doctor ordered.

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adrianoapmartins commented Jan 13, 2021

Great, thanks for the rundown. In my set up I actually had to reboot the machine, for some reason I wasn’t able to log in with my Ubiquiti account but it was fixed after a restart, for some reason.

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ARolek commented Feb 6, 2021 •

Worked great for me! I did have to make some firewall adjustments:

port 8443 is needed for the web console
port 3478 is needed for the STUN communication

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rnicolaev commented Feb 13, 2021

Hi guys, can you please explain how to update the Unifi controller on Ubuntu 20.04, when Unifi will release new versions of the controller in the future.

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davecoutts commented Feb 13, 2021

Once the Unifi controller is installed it is simply a matter of executing the commands ,

When you run the apt update command you will see that the latest Unifi https://dl.ubnt.com/unifi/debian repository package list is downloaded.
If Unifi have released a new version and placed it in their repository, the apt upgrade command will download and install it.

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Dudleydogg commented Mar 7, 2021

Fresh install Ubuntu Server, Ran the .sh script. went to the URL, uploaded my Backup file and I was up and running, even populated my cloud URL. Wow fantastic thanks.

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kkarhan commented Mar 8, 2021

For me, this is all that was needed on a clean 20.04 install:

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Maciej-Majcherek commented Mar 26, 2021

@davecoutts Do you also have : ERROR Error processing element InMemoryAppender ([Appenders: null]): CLASS_NOT_FOUND

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davecoutts commented Mar 26, 2021

Yes I do see that error.
These errors first appeared after I upgraded from version 6.0.45 to 6.1.71, which I did today.
I checked the unifi log history with journalctl -u unifi.service —no-pager to confirm this.

In my case the Unifi Controller is still running normally, even with the new set of errors.

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Maciej-Majcherek commented Mar 26, 2021

Thanks for quick reply Dave. I was just curious if it is only on my environment.
I’ve got one last question 😅
Did You upgrade controller via sudapt update unifi ?

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davecoutts commented Mar 26, 2021

You are welcome Maciej.
I updated the server with sudo apt update && sudo apt upgrade and that picked up the new unifi version.

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Bubba-Kastorsky commented Apr 9, 2021

Worked great for me! I did have to make some firewall adjustments:

port 8443 is needed for the web console
port 3478 is needed for the STUN communication

Also i need to make:
sudo ufw allow 8080/tcp
*port 8080 Port used for device and controller communication.

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crayz9000 commented Apr 21, 2021

With a fresh Ubuntu 20.04 install, the script worked to install UniFi 6.1.71-15061-1, except the web interface wouldn’t start, and this message was reported by systemctl status:

unifi[36574]: WARN Unable to load properties from ‘/usr/lib/unifi/data/system.properties’ — /usr/lib/unifi/data/system.properties (No such file or directory)

Checking the permissions on /usr/lib/unifi showed that everything was owned root:root, while all processes were running under user unifi. Running chown -R unifi:unifi /usr/lib/unifi allowed the service to restart successfully.

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earenasr commented Apr 21, 2021

hola buen dia, instale satisfactoriamente, me estaba funcionando bien pero de un momento a otro no me abre por web, no conozco del tema podrian ayudarme por favor

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crayz9000 commented Apr 21, 2021

hola buen dia, instale satisfactoriamente, me estaba funcionando bien pero de un momento a otro no me abre por web, no conozco del tema podrian ayudarme por favor

Trate de usar sudo chown -R unifi:unifi /usr/lib/unifi y sudo systemctl restart unifi

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earenasr commented Apr 21, 2021

hola buen dia, instale satisfactoriamente, me estaba funcionando bien pero de un momento a otro no me abre por web, no conozco del tema podrian ayudarme por favor

Trate de usar sudo chown -R unifi:unifi /usr/lib/unifi y sudo systemctl restart unifi

nada no me funciona, no se que mas hacer tengo 200 equipos que se validan en ese cloud, usted sabe de alguien que pueda revisarlo y pago sus servicios ?

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davecoutts commented Apr 21, 2021

With a fresh Ubuntu 20.04 install, the script worked to install UniFi 6.1.71-15061-1, except the web interface wouldn’t start, and this message was reported by systemctl status:

unifi[36574]: WARN Unable to load properties from ‘/usr/lib/unifi/data/system.properties’ — /usr/lib/unifi/data/system.properties (No such file or directory)

I believe the /usr/lib/unifi/data/system.properties (No such file or directory) error only occurs the first time the unifi application starts, following the installation.
I don’t know the unifi application post installation initialisation process, but it could be that the system.properties file needs time to be generated.

If you check soon after application start, you will see the system.properties file in directory /var/lib/unifi , which is soft linked from /usr/lib/unifi/data .

I don’t believe you need to change the ownership of /usr/lib/unifi .
To check this you could try restarting the unifi application without changing the /usr/lib/unifi directory ownership, and see if the system.properties error reoccurs. In my case I didn’t see the system.properties error on restarting the unifi application.

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ganter799 commented Jun 29, 2021

Just wanna thanks for your guide. Had some problems installing on Ubuntu 21.04 and switch to my Raspberry4 with Raspberry PI OS lite. Had to install ufw and open port 8443/tcp. Don’t know if the last step was really necessary but it worked. Maybe I was too stupid and mixed up the IP. Now everything works like charm.

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AHrubik commented Jul 16, 2021

Thanks for this — got me pointed in the right direction with install — had to edit JRE path before unifi service successfully launched — see here:

This is still required using Ubuntu 20.04-2.

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warybyte commented Jul 23, 2021

This also works on my configuration of 18.04. Thanks so much!

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dbosk commented Aug 10, 2021

On a Raspberry Pi 4 (arm64), I needed to modify one line:

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larrydevops commented Aug 15, 2021

Works perfectly. Tried on Ubuntu 20.04.02

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Thijxx commented Aug 26, 2021 •

Does not work (anymore) as it currently fails a mongodb dependency check unfortunately.

I’m working with Ubuntu 21.04, that is probably the problem. Manually installed Mongo but unifi keeps nagging about it missing no matter what I do.

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emulated24 commented Aug 27, 2021

Does not work (anymore) as it currently fails a mongodb dependency check unfortunately.

I’m working with Ubuntu 21.04, that is probably the problem. Manually installed Mongo but unifi keeps nagging about it missing no matter what I do.

I did this on Ubuntu Server 21.04 on arm64 RPi4b, works fine, mongodb 3.6.3 gets installed:

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Thijxx commented Aug 30, 2021

I used the pre-installed Raspberry Pi image for Ubuntu 21.04, maybe there is a difference there? Otherwise I cannot explain why it did not work out for me. I’ve moved to the LinuxServer docker container with Unifi.

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emulated24 commented Aug 31, 2021

I used the pre-installed Raspberry Pi image for Ubuntu 21.04, maybe there is a difference there? Otherwise I cannot explain why it did not work out for me. I’ve moved to the LinuxServer docker container with Unifi.

Not sure what went wrong, but I used this image for installation: ubuntu-21.04-preinstalled-server-arm64+raspi.img.xz
Then did what’s above, twice already, no problem at all. 🙂

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RocketLR commented Sep 13, 2021

For me, this is all that was needed on a clean 20.04 install:

Jupp thanks man. This worked flawlessly.

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ficematt commented Oct 2, 2021 •

I have followed these steps but can seem to access the Unifi console. When I check the unifi.service status bellow is the output.
● unifi.service — unifi
Loaded: loaded (/lib/systemd/system/unifi.service; enabled; vendor preset: enabled)
Active: active (running) since Fri 2021-10-01 23:04:39 CDT; 3min 13s ago
Process: 1001 ExecStart=/usr/lib/unifi/bin/unifi.init start (code=exited, status=0/SUCCESS)
Main PID: 1196 (jsvc)
Tasks: 37 (limit: 43313)
Memory: 313.0M
CGroup: /system.slice/unifi.service
├─1196 unifi -cwd /usr/lib/unifi -home /usr/lib/jvm/java-8-openjdk-amd64 -cp /usr/share/java/commo>
├─1199 unifi -cwd /usr/lib/unifi -home /usr/lib/jvm/java-8-openjdk-amd64 -cp /usr/share/java/commo>
└─1200 unifi -cwd /usr/lib/unifi -home /usr/lib/jvm/java-8-openjdk-amd64 -cp /usr/share/java/commo>

Oct 01 23:03:36 dvr1 systemd[1]: Starting unifi.
Oct 01 23:03:36 dvr1 unifi.init[1001]: * Starting Ubiquiti UniFi Controller unifi
Oct 01 23:04:39 dvr1 unifi.init[1001]: . fail!
Oct 01 23:04:39 dvr1 systemd[1]: Started unifi.
lines 1-16/16 (END)

The third line up from the bottom is the one that has me worried. I have tried looking online for a solution, but have come up empty handed.
Also, when I check the open ports with sudo lsof -nP -iTCP -sTCP:LISTEN I don’t see where the port 8443 is listening and open. I do not have UFW active. I have not had an issue with getting portainer and cockpit running. Those ports are shown listening when I ran the above command.

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Starkstromkonsument commented Oct 2, 2021

I have followed these steps but can seem to access the Unifi console. When I check the unifi.service status bellow is the output. ● unifi.service — unifi Loaded: loaded (/lib/systemd/system/unifi.service; enabled; vendor preset: enabled) Active: active (running) since Fri 2021-10-01 23:04:39 CDT; 3min 13s ago Process: 1001 ExecStart=/usr/lib/unifi/bin/unifi.init start (code=exited, status=0/SUCCESS) Main PID: 1196 (jsvc) Tasks: 37 (limit: 43313) Memory: 313.0M CGroup: /system.slice/unifi.service ├─1196 unifi -cwd /usr/lib/unifi -home /usr/lib/jvm/java-8-openjdk-amd64 -cp /usr/share/java/commo> ├─1199 unifi -cwd /usr/lib/unifi -home /usr/lib/jvm/java-8-openjdk-amd64 -cp /usr/share/java/commo> └─1200 unifi -cwd /usr/lib/unifi -home /usr/lib/jvm/java-8-openjdk-amd64 -cp /usr/share/java/commo>

Oct 01 23:03:36 dvr1 systemd[1]: Starting unifi. Oct 01 23:03:36 dvr1 unifi.init[1001]: * Starting Ubiquiti UniFi Controller unifi Oct 01 23:04:39 dvr1 unifi.init[1001]: . fail! Oct 01 23:04:39 dvr1 systemd[1]: Started unifi. lines 1-16/16 (END)

The third line up from the bottom is the one that has me worried. I have tried looking online for a solution, but have come up empty handed. Also, when I check the open ports with sudo lsof -nP -iTCP -sTCP:LISTEN I don’t see where the port 8443 is listening and open. I do not have UFW active. I have not had an issue with getting portainer and cockpit running. Those ports are shown listening when I ran the above command.

Same problem here. After enforcing some debugging in /etc/init.d/unifi I get a lot of Java-Output and this line:

[. ] main ERROR Unable to create file logs/server.log java.io.IOException: Could not create directory /logs

Any ideas anybody? The logging paths semm to be set up correctly. Why is it trying to create that directory? /var/log/unifi is present and writable by the user in question. Some more debugging data:

OS: Ubuntu Server 20.04.3 LTS (focal)

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ficematt commented Oct 3, 2021

I got the Unifi application running. I uninstalled the Unifi application. Then I ran the script found HERE.

Be sure you are running the latest script. You have to scroll down and copy the link from further down in the post. Below is the command you need to run. Refer to the post linked above for the most current information.

apt-get update; apt-get install ca-certificates wget -y
wget https://get.glennr.nl/unifi/install/unifi-6.4.54.sh
bash unifi-6.4.54.sh

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Источник

Ubiquiti unifi контроллер linux

Установка UniFi v4.7.6 Controller на Ubuntu Server 14.04 LTS