[R studio server] Incorrect or invalid username/password

Como Resolver o problema com o R Studio Server – e Utilizador invalido no Ubuntu 16.04

Durante um Update de segurança no Ubuntu 16.04, reparei que deixei de conseguir autenticar-me ao R Studio.
Depois de umas pesquisas e ter chegado a algumas razoes contraditórias, foi descoberto que apenas se tratava do Apparmor ter decidido bloquear o R Studio.

Para rezolver bastou executar:

master@srv-me:~$ sudo aa-status
apparmor module is loaded.
29 profiles are loaded.
29 profiles are in enforce mode.
   /sbin/dhclient
   /usr/bin/evince
   /usr/bin/evince-previewer
   /usr/bin/evince-previewer//sanitized_helper
   /usr/bin/evince-thumbnailer
   /usr/bin/evince-thumbnailer//sanitized_helper
   /usr/bin/evince//sanitized_helper
   /usr/lib/NetworkManager/nm-dhcp-client.action
   /usr/lib/NetworkManager/nm-dhcp-helper
   /usr/lib/connman/scripts/dhclient-script
   /usr/lib/cups/backend/cups-pdf
   /usr/lib/lightdm/lightdm-guest-session
   /usr/lib/lightdm/lightdm-guest-session//chromium
   /usr/lib/rstudio-server/bin/rserver
   /usr/lib/rstudio-server/bin/rserver//restricted
   /usr/lib/snapd/snap-confine
   /usr/lib/snapd/snap-confine//mount-namespace-capture-helper
   /usr/lib/snapd/snap-confine//snap_update_ns
   /usr/lib/telepathy/mission-control-5
   /usr/lib/telepathy/telepathy-*
   /usr/lib/telepathy/telepathy-*//pxgsettings
   /usr/lib/telepathy/telepathy-*//sanitized_helper
   /usr/lib/telepathy/telepathy-ofono
   /usr/sbin/cups-browsed
   /usr/sbin/cupsd
   /usr/sbin/cupsd//third_party
   /usr/sbin/ippusbxd
   /usr/sbin/ntpd
   /usr/sbin/tcpdump
0 profiles are in complain mode.
4 processes have profiles defined.
4 processes are in enforce mode.
   /sbin/dhclient (2801)
   /usr/lib/rstudio-server/bin/rserver (3908)
   /usr/sbin/cupsd (22316)
   /usr/sbin/ntpd (22918)
0 processes are in complain mode.
0 processes are unconfined but have a profile defined.
master@srv-me:~$

Foi possível identificar que o R Studio estava marcado.

Foi resolvível através do comando:

master@srv-me:~$ sudo aa-remove-unknown
Removing '/usr/lib/rstudio-server/bin/rserver'
master@srv-me:~$

Agora pode verificar novamente:

markov@markov:~$ sudo aa-status
[sudo] password for markov:
apparmor module is loaded.
27 profiles are loaded.
27 profiles are in enforce mode.
   /sbin/dhclient
   /usr/bin/evince
   /usr/bin/evince-previewer
   /usr/bin/evince-previewer//sanitized_helper
   /usr/bin/evince-thumbnailer
   /usr/bin/evince-thumbnailer//sanitized_helper
   /usr/bin/evince//sanitized_helper
   /usr/lib/NetworkManager/nm-dhcp-client.action
   /usr/lib/NetworkManager/nm-dhcp-helper
   /usr/lib/connman/scripts/dhclient-script
   /usr/lib/cups/backend/cups-pdf
   /usr/lib/lightdm/lightdm-guest-session
   /usr/lib/lightdm/lightdm-guest-session//chromium
   /usr/lib/snapd/snap-confine
   /usr/lib/snapd/snap-confine//mount-namespace-capture-helper
   /usr/lib/snapd/snap-confine//snap_update_ns
   /usr/lib/telepathy/mission-control-5
   /usr/lib/telepathy/telepathy-*
   /usr/lib/telepathy/telepathy-*//pxgsettings
   /usr/lib/telepathy/telepathy-*//sanitized_helper
   /usr/lib/telepathy/telepathy-ofono
   /usr/sbin/cups-browsed
   /usr/sbin/cupsd
   /usr/sbin/cupsd//third_party
   /usr/sbin/ippusbxd
   /usr/sbin/ntpd
   /usr/sbin/tcpdump
0 profiles are in complain mode.
3 processes have profiles defined.
3 processes are in enforce mode.
   /sbin/dhclient (2801)
   /usr/sbin/cupsd (22316)
   /usr/sbin/ntpd (22918)
0 processes are in complain mode.
0 processes are unconfined but have a profile defined.
master@srv-me:~$

Está pronto. pode novamente efectuar o seu respectivo login.

A continuação de uma boa programação…