I have a x86_64 system running CentOS 7. I have installed and configured R and RStudio Server on it, but not able to access it via http://<server-ip>:8787 as suggested by the documentation here. I get following error on Google Chrome:
This site can’t be reached
<server-ip> refused to connect.
Search Google for 206 196 8787
ERR_CONNECTION_REFUSED
I tried and verified many network, firewall settings. However, nothing seems to be working.
R working on system
~$ R
R version 3.4.1 (2017-06-30) -- "Single Candle"
Copyright (C) 2017 The R Foundation for Statistical Computing
Platform: x86_64-redhat-linux-gnu (64-bit)
R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.
Natural language support but running in an English locale
R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.
Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.
> print("I Work")
[1] "I Work"
RStudio Server is configured and active
~$ sudo rstudio-server verify-installation
~$ 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 Sat 2017-10-21 21:33:53 MST; 1s ago
Process: 8300 ExecStop=/usr/bin/killall -TERM rserver (code=exited, status=0/SUCCESS)
Process: 8346 ExecStart=/usr/lib/rstudio-server/bin/rserver (code=exited, status=0/SUCCESS)
Main PID: 8349 (rserver)
CGroup: /system.slice/rstudio-server.service
└─8349 /usr/lib/rstudio-server/bin/rserver
Oct 21 21:33:53 localhost.localdomain systemd[1]: Starting RStudio Server...
Oct 21 21:33:53 localhost.localdomain systemd[1]: Started RStudio Server.
~$ sudo rstudio-server restart
rsession: no process found
~$ sudo rstudio-server start
~$ sudo rstudio-server stop
rsession: no process found
~$ sudo rstudio-server start
~$ 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 Sat 2017-10-21 21:34:14 MST; 2s ago
Process: 8449 ExecStop=/usr/bin/killall -TERM rserver (code=exited, status=0/SUCCESS)
Process: 8477 ExecStart=/usr/lib/rstudio-server/bin/rserver (code=exited, status=0/SUCCESS)
Main PID: 8480 (rserver)
CGroup: /system.slice/rstudio-server.service
└─8480 /usr/lib/rstudio-server/bin/rserver
Oct 21 21:34:14 localhost.localdomain systemd[1]: Starting RStudio Server...
Oct 21 21:34:14 localhost.localdomain systemd[1]: Started RStudio Server.
netstat output shows port can listen
~$ netstat -nat | grep LISTEN
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:8787 0.0.0.0:* LISTEN
tcp 0 0 192.168.122.1:53 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN
tcp6 0 0 :::111 :::* LISTEN
tcp6 0 0 :::22 :::* LISTEN
tcp6 0 0 ::1:631 :::* LISTEN
tcp6 0 0 ::1:25 :::* LISTEN
Firewall says port is open
~$ sudo ufw allow 8787
~$ sudo ufw status
Status: active
To Action From
-- ------ ----
SSH ALLOW Anywhere
224.0.0.251 mDNS ALLOW Anywhere
8787 ALLOW Anywhere
SSH (v6) ALLOW Anywhere (v6)
ff02::fb mDNS ALLOW Anywhere (v6)
8787 (v6) ALLOW Anywhere (v6)
systemctl output
~$ sudo systemctl status firewalld
● firewalld.service - firewalld - dynamic firewall daemon
Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled)
Active: active (running) since Sat 2017-10-21 20:38:02 MST; 35min ago
Docs: man:firewalld(1)
Main PID: 2987 (firewalld)
CGroup: /system.slice/firewalld.service
└─2987 /usr/bin/python -Es /usr/sbin/firewalld --nofork --nopid
~$ sudo firewall-cmd --zone=public --add-port=8787/tcp
Warning: ALREADY_ENABLED: '8787:tcp' already in 'public'
success
~$ sudo firewall-cmd --reload
success
~$ sudo firewall-cmd --zone=public --list-all
public (active)
target: default
icmp-block-inversion: no
interfaces: enp4s0f1
sources:
services: dhcpv6-client ssh
ports: 8787/tcp
protocols:
masquerade: no
forward-ports:
source-ports:
icmp-blocks:
rich rules:
Can anyone please help me point where I am going wrong?
Thanks.
