How do I get the IP address of an LXC container for automation?












3















How can I get the IP address of an LXC container in a format I can use in scripting?



Right now, the command lxc info <container> report that information, but in a human readable format, with a lot of information.



I would like to ONLY to GET the IP address given a container name.



Note: I HAVE to duplicate this question because Linux Containers have changed a lot.



Installing lxd and using unprivileged containers is the default way to go this days (2017) and I think the solutions posted on the original question are do not resolve the issue in this case.



In any case, I installed the package lxc1 to get access to the command lxc-info, but that command doesn't recognize any of my unprivileged containers.










share|improve this question



























    3















    How can I get the IP address of an LXC container in a format I can use in scripting?



    Right now, the command lxc info <container> report that information, but in a human readable format, with a lot of information.



    I would like to ONLY to GET the IP address given a container name.



    Note: I HAVE to duplicate this question because Linux Containers have changed a lot.



    Installing lxd and using unprivileged containers is the default way to go this days (2017) and I think the solutions posted on the original question are do not resolve the issue in this case.



    In any case, I installed the package lxc1 to get access to the command lxc-info, but that command doesn't recognize any of my unprivileged containers.










    share|improve this question

























      3












      3








      3


      1






      How can I get the IP address of an LXC container in a format I can use in scripting?



      Right now, the command lxc info <container> report that information, but in a human readable format, with a lot of information.



      I would like to ONLY to GET the IP address given a container name.



      Note: I HAVE to duplicate this question because Linux Containers have changed a lot.



      Installing lxd and using unprivileged containers is the default way to go this days (2017) and I think the solutions posted on the original question are do not resolve the issue in this case.



      In any case, I installed the package lxc1 to get access to the command lxc-info, but that command doesn't recognize any of my unprivileged containers.










      share|improve this question














      How can I get the IP address of an LXC container in a format I can use in scripting?



      Right now, the command lxc info <container> report that information, but in a human readable format, with a lot of information.



      I would like to ONLY to GET the IP address given a container name.



      Note: I HAVE to duplicate this question because Linux Containers have changed a lot.



      Installing lxd and using unprivileged containers is the default way to go this days (2017) and I think the solutions posted on the original question are do not resolve the issue in this case.



      In any case, I installed the package lxc1 to get access to the command lxc-info, but that command doesn't recognize any of my unprivileged containers.







      lxc lxd






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Jun 1 '17 at 14:36









      jgomo3jgomo3

      4261622




      4261622






















          5 Answers
          5






          active

          oldest

          votes


















          2














          A native solution (which isn't any prettier than @siloko's answer) would be



          lxc list "<name>" -c 4 | awk '!/IPV4/{ if ( $2 != "" ) print $2}'


          There are alternatives to awk, but that's tangential to the question.






          share|improve this answer































            2














            lxc list | grep nameofthecontainer | egrep -o "[0-9]+.[0-9]+.[0-9]+.[0-9]+"


            This is what I am using, I pass the container name in as a variable.






            share|improve this answer





















            • 2





              the grep command is unneded, you can put directly lxc list container_name | egrep -o "[0-9]+.[0-9]+.[0-9]+.[0-9]+" with the same result

              – Yonsy Solis
              Feb 20 '18 at 15:45





















            1














            So far this is the easiest way:



            lxc list -c4 --format csv <container> | cut -d' ' -f1


            But maybe it will be possible without cut.



            EDIT: Uncut bash:



            a=( $(lxc list -c4 --format csv u1) ) ip4=$a[1] echo $ip4


            Hint from @monstermunchkin from the above issue.






            share|improve this answer

































              0














              Probably a bit ugly but:



              lxc-info -n my-container | grep IP: | tr -d ' ' | cut -f2 -d:


              will get you just the IP address






              share|improve this answer
























              • Thank you. It would be a solution in the near time. BTW, the idea is to use the command lxc info, not lxc-info as they are different how I explained.

                – jgomo3
                Jun 1 '17 at 14:58











              • bare lxc is not available on my system (Ubuntu 16.04), sorry.

                – siloko
                Jun 2 '17 at 6:55



















              -1














              lxc-info --name container --ips --no-humanize


              prints the container IP addresses.



              The returned value is a list because a container can have more than one address.






              share|improve this answer























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                5 Answers
                5






                active

                oldest

                votes








                5 Answers
                5






                active

                oldest

                votes









                active

                oldest

                votes






                active

                oldest

                votes









                2














                A native solution (which isn't any prettier than @siloko's answer) would be



                lxc list "<name>" -c 4 | awk '!/IPV4/{ if ( $2 != "" ) print $2}'


                There are alternatives to awk, but that's tangential to the question.






                share|improve this answer




























                  2














                  A native solution (which isn't any prettier than @siloko's answer) would be



                  lxc list "<name>" -c 4 | awk '!/IPV4/{ if ( $2 != "" ) print $2}'


                  There are alternatives to awk, but that's tangential to the question.






                  share|improve this answer


























                    2












                    2








                    2







                    A native solution (which isn't any prettier than @siloko's answer) would be



                    lxc list "<name>" -c 4 | awk '!/IPV4/{ if ( $2 != "" ) print $2}'


                    There are alternatives to awk, but that's tangential to the question.






                    share|improve this answer













                    A native solution (which isn't any prettier than @siloko's answer) would be



                    lxc list "<name>" -c 4 | awk '!/IPV4/{ if ( $2 != "" ) print $2}'


                    There are alternatives to awk, but that's tangential to the question.







                    share|improve this answer












                    share|improve this answer



                    share|improve this answer










                    answered Jun 13 '17 at 21:27









                    Jonathan Y.Jonathan Y.

                    504928




                    504928

























                        2














                        lxc list | grep nameofthecontainer | egrep -o "[0-9]+.[0-9]+.[0-9]+.[0-9]+"


                        This is what I am using, I pass the container name in as a variable.






                        share|improve this answer





















                        • 2





                          the grep command is unneded, you can put directly lxc list container_name | egrep -o "[0-9]+.[0-9]+.[0-9]+.[0-9]+" with the same result

                          – Yonsy Solis
                          Feb 20 '18 at 15:45


















                        2














                        lxc list | grep nameofthecontainer | egrep -o "[0-9]+.[0-9]+.[0-9]+.[0-9]+"


                        This is what I am using, I pass the container name in as a variable.






                        share|improve this answer





















                        • 2





                          the grep command is unneded, you can put directly lxc list container_name | egrep -o "[0-9]+.[0-9]+.[0-9]+.[0-9]+" with the same result

                          – Yonsy Solis
                          Feb 20 '18 at 15:45
















                        2












                        2








                        2







                        lxc list | grep nameofthecontainer | egrep -o "[0-9]+.[0-9]+.[0-9]+.[0-9]+"


                        This is what I am using, I pass the container name in as a variable.






                        share|improve this answer















                        lxc list | grep nameofthecontainer | egrep -o "[0-9]+.[0-9]+.[0-9]+.[0-9]+"


                        This is what I am using, I pass the container name in as a variable.







                        share|improve this answer














                        share|improve this answer



                        share|improve this answer








                        edited Feb 2 '18 at 2:13









                        muru

                        1




                        1










                        answered Feb 1 '18 at 23:55









                        NeilNeil

                        211




                        211








                        • 2





                          the grep command is unneded, you can put directly lxc list container_name | egrep -o "[0-9]+.[0-9]+.[0-9]+.[0-9]+" with the same result

                          – Yonsy Solis
                          Feb 20 '18 at 15:45
















                        • 2





                          the grep command is unneded, you can put directly lxc list container_name | egrep -o "[0-9]+.[0-9]+.[0-9]+.[0-9]+" with the same result

                          – Yonsy Solis
                          Feb 20 '18 at 15:45










                        2




                        2





                        the grep command is unneded, you can put directly lxc list container_name | egrep -o "[0-9]+.[0-9]+.[0-9]+.[0-9]+" with the same result

                        – Yonsy Solis
                        Feb 20 '18 at 15:45







                        the grep command is unneded, you can put directly lxc list container_name | egrep -o "[0-9]+.[0-9]+.[0-9]+.[0-9]+" with the same result

                        – Yonsy Solis
                        Feb 20 '18 at 15:45













                        1














                        So far this is the easiest way:



                        lxc list -c4 --format csv <container> | cut -d' ' -f1


                        But maybe it will be possible without cut.



                        EDIT: Uncut bash:



                        a=( $(lxc list -c4 --format csv u1) ) ip4=$a[1] echo $ip4


                        Hint from @monstermunchkin from the above issue.






                        share|improve this answer






























                          1














                          So far this is the easiest way:



                          lxc list -c4 --format csv <container> | cut -d' ' -f1


                          But maybe it will be possible without cut.



                          EDIT: Uncut bash:



                          a=( $(lxc list -c4 --format csv u1) ) ip4=$a[1] echo $ip4


                          Hint from @monstermunchkin from the above issue.






                          share|improve this answer




























                            1












                            1








                            1







                            So far this is the easiest way:



                            lxc list -c4 --format csv <container> | cut -d' ' -f1


                            But maybe it will be possible without cut.



                            EDIT: Uncut bash:



                            a=( $(lxc list -c4 --format csv u1) ) ip4=$a[1] echo $ip4


                            Hint from @monstermunchkin from the above issue.






                            share|improve this answer















                            So far this is the easiest way:



                            lxc list -c4 --format csv <container> | cut -d' ' -f1


                            But maybe it will be possible without cut.



                            EDIT: Uncut bash:



                            a=( $(lxc list -c4 --format csv u1) ) ip4=$a[1] echo $ip4


                            Hint from @monstermunchkin from the above issue.







                            share|improve this answer














                            share|improve this answer



                            share|improve this answer








                            edited Jan 29 at 10:39

























                            answered Jul 14 '18 at 1:23









                            anatoly techtonikanatoly techtonik

                            84121431




                            84121431























                                0














                                Probably a bit ugly but:



                                lxc-info -n my-container | grep IP: | tr -d ' ' | cut -f2 -d:


                                will get you just the IP address






                                share|improve this answer
























                                • Thank you. It would be a solution in the near time. BTW, the idea is to use the command lxc info, not lxc-info as they are different how I explained.

                                  – jgomo3
                                  Jun 1 '17 at 14:58











                                • bare lxc is not available on my system (Ubuntu 16.04), sorry.

                                  – siloko
                                  Jun 2 '17 at 6:55
















                                0














                                Probably a bit ugly but:



                                lxc-info -n my-container | grep IP: | tr -d ' ' | cut -f2 -d:


                                will get you just the IP address






                                share|improve this answer
























                                • Thank you. It would be a solution in the near time. BTW, the idea is to use the command lxc info, not lxc-info as they are different how I explained.

                                  – jgomo3
                                  Jun 1 '17 at 14:58











                                • bare lxc is not available on my system (Ubuntu 16.04), sorry.

                                  – siloko
                                  Jun 2 '17 at 6:55














                                0












                                0








                                0







                                Probably a bit ugly but:



                                lxc-info -n my-container | grep IP: | tr -d ' ' | cut -f2 -d:


                                will get you just the IP address






                                share|improve this answer













                                Probably a bit ugly but:



                                lxc-info -n my-container | grep IP: | tr -d ' ' | cut -f2 -d:


                                will get you just the IP address







                                share|improve this answer












                                share|improve this answer



                                share|improve this answer










                                answered Jun 1 '17 at 14:54









                                silokosiloko

                                50727




                                50727













                                • Thank you. It would be a solution in the near time. BTW, the idea is to use the command lxc info, not lxc-info as they are different how I explained.

                                  – jgomo3
                                  Jun 1 '17 at 14:58











                                • bare lxc is not available on my system (Ubuntu 16.04), sorry.

                                  – siloko
                                  Jun 2 '17 at 6:55



















                                • Thank you. It would be a solution in the near time. BTW, the idea is to use the command lxc info, not lxc-info as they are different how I explained.

                                  – jgomo3
                                  Jun 1 '17 at 14:58











                                • bare lxc is not available on my system (Ubuntu 16.04), sorry.

                                  – siloko
                                  Jun 2 '17 at 6:55

















                                Thank you. It would be a solution in the near time. BTW, the idea is to use the command lxc info, not lxc-info as they are different how I explained.

                                – jgomo3
                                Jun 1 '17 at 14:58





                                Thank you. It would be a solution in the near time. BTW, the idea is to use the command lxc info, not lxc-info as they are different how I explained.

                                – jgomo3
                                Jun 1 '17 at 14:58













                                bare lxc is not available on my system (Ubuntu 16.04), sorry.

                                – siloko
                                Jun 2 '17 at 6:55





                                bare lxc is not available on my system (Ubuntu 16.04), sorry.

                                – siloko
                                Jun 2 '17 at 6:55











                                -1














                                lxc-info --name container --ips --no-humanize


                                prints the container IP addresses.



                                The returned value is a list because a container can have more than one address.






                                share|improve this answer




























                                  -1














                                  lxc-info --name container --ips --no-humanize


                                  prints the container IP addresses.



                                  The returned value is a list because a container can have more than one address.






                                  share|improve this answer


























                                    -1












                                    -1








                                    -1







                                    lxc-info --name container --ips --no-humanize


                                    prints the container IP addresses.



                                    The returned value is a list because a container can have more than one address.






                                    share|improve this answer













                                    lxc-info --name container --ips --no-humanize


                                    prints the container IP addresses.



                                    The returned value is a list because a container can have more than one address.







                                    share|improve this answer












                                    share|improve this answer



                                    share|improve this answer










                                    answered Jan 17 '18 at 17:56









                                    G. FiedlerG. Fiedler

                                    992




                                    992






























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