Rstudio-server unable to connect to service - r

Question

While login to Rstudio Server with my user name and password, I received the following
Rstudio Initilization Error
unable to connect to service
I installed Rstudio Server in the following way:
apt-get install gdebi-core r-base r-base-dev
wget -c https://download2.rstudio.org/rstudio-server-0.99.489-amd64.deb
sudo gdebi rstudio-server-0.99.489-amd64.deb
sudo usermod -a -G rstudio lorencm
sudo service rstudio-server start
id lorencm
uid=1000(lorencm) gid=1000(lorencm) groups=1000(lorencm),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),108(lpadmin),111(sambashare),999(docker),1001(rstudio)
What did I do wrong?

Answer 1

In my experience this might happen because of permission to your home directory or you don't have any home directory. possibly created by defauly with no home directory.
to solve this, just create a home directory for the username that you are tryin to use or use an exisiting username with valide home directory
usermod -md /home/username username
or just create one
sudo mkdir /home/username
sudo chown -R username /home/username
Good luck

Answer 2

I am running a Fedora server with SELinux, I used cockpit to look at the SELinux logs and could see that the Rhistory file was being blocked for access. In adding in the policy SELinux advised, I was then able to login without any issues.

Answer 3

I was facing same issue & resolved by following:
disabling SELinux and rebooting the server.
The user with which you are logging in should be part of "rstudio-server" group.
rstudio-server:x:986:rconnect_admin
to add that user to rstudio-server group use usermod -a -G rstudio-server <username>
Here is the test process.
I refer to the web page here: disable SELINUX ,
I tested the hypothesis about SELinux.
[testuser#third-test ~]$ sestatus
SELinux status: enabled
SELinuxfs mount: /sys/fs/selinux
SELinux root directory: /etc/selinux
Loaded policy name: targeted
Current mode: enforcing
Mode from config file: enforcing
Policy MLS status: enabled
Policy deny_unknown status: allowed
Memory protection checking: actual (secure)
Max kernel policy version: 31
I changed the directive SELinux=enforcing to SELinux=disabled
[testuser#third-test ~]$ sudo vi /etc/sysconfig/selinux
Then I reboot my system.
[testuser#third-test ~]$ sudo shutdown -r now
Now the SELinux is disabled.
[testuser#third-test ~]$ sestatus
SELinux status: disabled
Then the rstudio-server status looks good.
[testuser#third-test ~]$ sudo rstudio-server status
● rstudio-server.service - RStudio Server
Loaded: loaded (/etc/systemd/system/rstudio-server.service; enabled; vendor preset: disabled)
Active: active (running) since Thu 2019-12-12 21:42:54 UTC; 2min 0s ago
Process: 1091 ExecStart=/usr/lib/rstudio-server/bin/rserver (code=exited, status=0/SUCCESS)
Main PID: 1135 (rserver)
​ Tasks: 3 (limit: 22408)
Memory: 58.7M
CGroup: /system.slice/rstudio-server.service
​ └─1135 /usr/lib/rstudio-server/bin/rserver
Dec 12 21:42:54 third-test systemd[1]: Starting RStudio Server...
Dec 12 21:42:54 third-test systemd[1]: Started RStudio Server.
[testuser#third-test ~]$ sudo rstudio-server status
● rstudio-server.service - RStudio Server
Loaded: loaded (/etc/systemd/system/rstudio-server.service; enabled; vendor preset: disabled)
Active: active (running) since Thu 2019-12-12 21:42:54 UTC; 3min 37s ago
Process: 1091 ExecStart=/usr/lib/rstudio-server/bin/rserver (code=exited, status=0/SUCCESS)
Main PID: 1135 (rserver)
​ Tasks: 8 (limit: 22408)
Memory: 141.0M
CGroup: /system.slice/rstudio-server.service
​ ├─1135 /usr/lib/rstudio-server/bin/rserver
​ └─1662 /usr/lib/rstudio-server/bin/rsession -u testuser2 --launcher-token A8F380C6
Dec 12 21:42:54 third-test systemd[1]: Starting RStudio Server...
Dec 12 21:42:54 third-test systemd[1]: Started RStudio Server.
Another suggestion:
It's always prefer not to use local authentication for login & use LDAP, Googleauth etc for login to the server.

Answer 4

i experienced the same problem on fedora 32 and then i removed R packages & rstudio-server and reinstall them again and worked fine.