[uylug-varios] Problema raro de conexion entre dos maquinas
Enrique Verdes
emverdes at ieee.org
Mon May 2 05:49:06 PDT 2016
Si selinux está apagado y el firewall también, o tenés abierto el puerto no
deberías tener problemas. Como tenés configurada la conexión de red en las
máquinas virtuales?
Enrique.
2016-04-29 22:15 GMT-03:00 Dante Castiglione M. <dac.maldonado at gmail.com>:
> Pero aun estando apagado puede frenar el acceso?
>
>
> ---------------------------------------------
>
> *SouthX*
> https://southx.io
> BigData
>
> *Digicoins*
> https://digicoins.cash <https://southx.io/>
> Bitcoin
>
> Dante Castiglione Maldonado
> dac.maldonado at gmail.com
>
> ---------------------------------------------
>
>
> On 29 April 2016 at 22:10, Cristian Menghi <cristian at menghi.biz> wrote:
>
>> Pegale una mirada a
>>
>> https://wiki.postgresql.org/wiki/SEPostgreSQL_SELinux_Overview
>>
>> Slds
>> ---
>> Cristian Menghi @movil
>> El 29 abr. 2016 7:49 p. m., "Dante Castiglione M." <
>> dac.maldonado at gmail.com> escribió:
>>
>>> Si, habia reiniciado.
>>> Hice los cambios sugeridos en ambos archivos hosts pero sigue igual.
>>>
>>>
>>>
>>> ---------------------------------------------
>>>
>>> *SouthX*
>>> https://southx.io
>>> BigData
>>>
>>> *Digicoins*
>>> https://digicoins.cash <https://southx.io/>
>>> Bitcoin
>>>
>>> Dante Castiglione Maldonado
>>> dac.maldonado at gmail.com
>>>
>>> ---------------------------------------------
>>>
>>>
>>> On 29 April 2016 at 17:03, Enrique Verdes <emverdes at ieee.org> wrote:
>>>
>>>> si no reiniciaste hace setenforce 0 en línea de comandos. Hacé lo mismo
>>>> en el cliente, por las dudas.
>>>>
>>>> En cuanto a archivos hosts dejalos así
>>>>
>>>> este es el del clliente
>>>>
>>>> 192.168.1.43 mdw.southx.io
>>>> fe80::1a4f:32ff:feca:297d mdw.southx.io
>>>> 127.0.0.1 localhost localhost.localdomain
>>>> localhost4 localhost4.localdomain4
>>>> ::1 localhost localhost.localdomain
>>>> localhost6 localhost6.localdomain6
>>>>
>>>> y este es el del server
>>>>
>>>> 192.168.1.43 mdw.southx.io
>>>> fe80::1a4f:32ff:feca:297d mdw.southx.io
>>>> 192.168.1.42 fatima.southx.io
>>>> 127.0.0.1 localhost localhost.localdomain
>>>> localhost4 localhost4.localdomain4
>>>> ::1 localhost localhost.localdomain
>>>> localhost6 localhost6.localdomain6
>>>>
>>>> por alguna razón cuando configurás la red te asocia el nombre dns de la
>>>> máquina también con 127.0.0.1 y a mime ha hecho cosas raras eso. De todas
>>>> formas, no debería ser el problema porque estás haciendo el telnet por IP.
>>>>
>>>> Hacé el setenforce 0 y revisá.
>>>>
>>>> Saludos,
>>>>
>>>> 2016-04-29 16:09 GMT-03:00 Dante Castiglione M. <
>>>> dac.maldonado at gmail.com>:
>>>>
>>>>> (aclaro que reinicie el server luego de deshabilitar selinux y antes
>>>>> de volver a probar)
>>>>>
>>>>>
>>>>>
>>>>> ---------------------------------------------
>>>>>
>>>>> *SouthX*
>>>>> https://southx.io
>>>>> BigData
>>>>>
>>>>> *Digicoins*
>>>>> https://digicoins.cash <https://southx.io/>
>>>>> Bitcoin
>>>>>
>>>>> Dante Castiglione Maldonado
>>>>> dac.maldonado at gmail.com
>>>>>
>>>>> ---------------------------------------------
>>>>>
>>>>>
>>>>> On 29 April 2016 at 15:50, Dante Castiglione M. <
>>>>> dac.maldonado at gmail.com> wrote:
>>>>>
>>>>>>
>>>>>> Que raro... Como parte del procedimiento de instalacion de la DB lo
>>>>>> habia desabilitado, pero ahora ante tu pregunta lo revise y esta habilitado
>>>>>> de nuevo... Quizas lo hice en el cliente.
>>>>>>
>>>>>> [usuario at server ~]# 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
>>>>>> Max kernel policy version: 28
>>>>>>
>>>>>>
>>>>>> [usuario at server ~]# cat /etc/selinux/config
>>>>>>
>>>>>> # This file controls the state of SELinux on the system.
>>>>>> # SELINUX= can take one of these three values:
>>>>>> # enforcing - SELinux security policy is enforced.
>>>>>> # permissive - SELinux prints warnings instead of enforcing.
>>>>>> # disabled - No SELinux policy is loaded.
>>>>>> SELINUX=enforcing
>>>>>> # SELINUXTYPE= can take one of three two values:
>>>>>> # targeted - Targeted processes are protected,
>>>>>> # minimum - Modification of targeted policy. Only selected
>>>>>> processes are protected.
>>>>>> # mls - Multi Level Security protection.
>>>>>> SELINUXTYPE=targeted
>>>>>>
>>>>>>
>>>>>> ahora lo deshabilite
>>>>>>
>>>>>> [usuario at server ~]# cat /etc/selinux/config
>>>>>>
>>>>>> # This file controls the state of SELinux on the system.
>>>>>> # SELINUX= can take one of these three values:
>>>>>> # enforcing - SELinux security policy is enforced.
>>>>>> # permissive - SELinux prints warnings instead of enforcing.
>>>>>> # disabled - No SELinux policy is loaded.
>>>>>> #SELINUX=enforcing
>>>>>> SELINUX=disabled
>>>>>> # SELINUXTYPE= can take one of three two values:
>>>>>> # targeted - Targeted processes are protected,
>>>>>> # minimum - Modification of targeted policy. Only selected
>>>>>> processes are protected.
>>>>>> # mls - Multi Level Security protection.
>>>>>> SELINUXTYPE=targeted
>>>>>>
>>>>>>
>>>>>> no cambia nada
>>>>>>
>>>>>> [usuario at cliente ~]$ psql -h 192.168.1.43 -U dbuser dbname
>>>>>> psql: could not connect to server: No route to host
>>>>>> Is the server running on host "192.168.1.43" and accepting
>>>>>> TCP/IP connections on port 5432?
>>>>>>
>>>>>> [usuario at cliente ~]$ telnet 192.168.1.43 5432
>>>>>> Trying 192.168.1.43...
>>>>>> telnet: connect to address 192.168.1.43: No route to host
>>>>>>
>>>>>>
>>>>>> sera que no esta bien mi archivo hosts ?
>>>>>>
>>>>>> este es el del clliente
>>>>>>
>>>>>> 192.168.1.43 mdw.southx.io
>>>>>> fe80::1a4f:32ff:feca:297d mdw.southx.io
>>>>>> 127.0.0.1 localhost localhost.localdomain
>>>>>> localhost4 localhost4.localdomain4
>>>>>> ::1 localhost
>>>>>> localhost.localdomain localhost6 localhost6.localdomain6
>>>>>> 127.0.0.1 cliente.southx.io
>>>>>> ::1 cliente.southx.io
>>>>>>
>>>>>> y este es el del server
>>>>>>
>>>>>> 127.0.0.1 mdw.southx.io
>>>>>> ::1 mdw.southx.io
>>>>>> 192.168.1.43 mdw.southx.io
>>>>>> fe80::1a4f:32ff:feca:297d mdw.southx.io
>>>>>> 127.0.0.1 sdw1.southx.io
>>>>>> ::1 sdw1.southx.io
>>>>>> 127.0.0.1 sdw2.southx.io
>>>>>> ::1 sdw2.southx.io
>>>>>> 192.168.1.42 fatima.southx.io
>>>>>> 127.0.0.1 localhost localhost.localdomain
>>>>>> localhost4 localhost4.localdomain4
>>>>>> ::1 localhost localhost.localdomain
>>>>>> localhost6 localhost6.localdomain6
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> ---------------------------------------------
>>>>>>
>>>>>> *SouthX*
>>>>>> https://southx.io
>>>>>> BigData
>>>>>>
>>>>>> *Digicoins*
>>>>>> https://digicoins.cash <https://southx.io/>
>>>>>> Bitcoin
>>>>>>
>>>>>> Dante Castiglione Maldonado
>>>>>> dac.maldonado at gmail.com
>>>>>>
>>>>>> ---------------------------------------------
>>>>>>
>>>>>>
>>>>>> On 29 April 2016 at 15:42, Enrique Verdes <emverdes at ieee.org> wrote:
>>>>>>
>>>>>>> Mandá la salida del comando sestatus
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> 2016-04-29 15:19 GMT-03:00 Kenneth Irving <ken at fq.edu.uy>:
>>>>>>>
>>>>>>>> ¿No será alguna restricción de SELinux?
>>>>>>>>
>>>>>>>> saludos
>>>>>>>>
>>>>>>>> Kenneth
>>>>>>>>
>>>>>>>>
>>>>>>>> On Fri, 29 Apr 2016, Dante Castiglione M. wrote:
>>>>>>>>
>>>>>>>>
>>>>>>>>> Muchas gracias por sus amables respuestas.
>>>>>>>>>
>>>>>>>>> ------------------------------------
>>>>>>>>> 1. telnet
>>>>>>>>> ------------------------------------
>>>>>>>>>
>>>>>>>>> Hice el telnet correctamente desde el CentOS cliente, el resultado
>>>>>>>>> no cambia
>>>>>>>>>
>>>>>>>>> [usuario at cliente ~]$ telnet 192.168.1.43 5432
>>>>>>>>> Trying 192.168.1.43...
>>>>>>>>> telnet: connect to address 192.168.1.43: No route to host
>>>>>>>>>
>>>>>>>>> Por si acaso lo repeti desde el cliente en Ubuntu, hace lo mismo
>>>>>>>>>
>>>>>>>>> usuario at cliente:~$ telnet 192.168.1.43 5432
>>>>>>>>> Trying 192.168.1.43...
>>>>>>>>> telnet: Unable to connect to remote host: No route to host
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> ------------------------------------
>>>>>>>>> 2. server
>>>>>>>>> ------------------------------------
>>>>>>>>>
>>>>>>>>> ifconfig del server
>>>>>>>>>
>>>>>>>>> [usuario at server ~]# ifconfig
>>>>>>>>> lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
>>>>>>>>> inet 127.0.0.1 netmask 255.0.0.0
>>>>>>>>> inet6 ::1 prefixlen 128 scopeid 0x10<host>
>>>>>>>>> loop txqueuelen 0 (Local Loopback)
>>>>>>>>> RX packets 756 bytes 127594 (124.6 KiB)
>>>>>>>>> RX errors 0 dropped 0 overruns 0 frame 0
>>>>>>>>> TX packets 756 bytes 127594 (124.6 KiB)
>>>>>>>>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>>>>>>>
>>>>>>>>> p1p1: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
>>>>>>>>> ether 20:47:47:3c:5b:bd txqueuelen 1000 (Ethernet)
>>>>>>>>> RX packets 0 bytes 0 (0.0 B)
>>>>>>>>> RX errors 0 dropped 0 overruns 0 frame 0
>>>>>>>>> TX packets 0 bytes 0 (0.0 B)
>>>>>>>>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>>>>>>>
>>>>>>>>> virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
>>>>>>>>> inet 192.168.122.1 netmask 255.255.255.0 broadcast
>>>>>>>>> 192.168.122.255
>>>>>>>>> ether 52:54:00:a4:bc:6e txqueuelen 0 (Ethernet)
>>>>>>>>> RX packets 0 bytes 0 (0.0 B)
>>>>>>>>> RX errors 0 dropped 0 overruns 0 frame 0
>>>>>>>>> TX packets 0 bytes 0 (0.0 B)
>>>>>>>>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>>>>>>>
>>>>>>>>> wlp6s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
>>>>>>>>> inet 192.168.1.43 netmask 255.255.255.0 broadcast
>>>>>>>>> 192.168.1.255
>>>>>>>>> inet6 fe80::1a4f:32ff:feca:297d prefixlen 64 scopeid
>>>>>>>>> 0x20<link>
>>>>>>>>> ether 18:4f:32:ca:29:7d txqueuelen 1000 (Ethernet)
>>>>>>>>> RX packets 12450 bytes 8049799 (7.6 MiB)
>>>>>>>>> RX errors 0 dropped 0 overruns 0 frame 0
>>>>>>>>> TX packets 7794 bytes 1254229 (1.1 MiB)
>>>>>>>>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> ip tables del server
>>>>>>>>>
>>>>>>>>> [usuario at server ~]# service iptables status
>>>>>>>>> Redirecting to /bin/systemctl status iptables.service
>>>>>>>>> ● iptables.service
>>>>>>>>> Loaded: not-found (Reason: No such file or directory)
>>>>>>>>> Active: inactive (dead)
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> ------------------------------------
>>>>>>>>> 3. cliente
>>>>>>>>> ------------------------------------
>>>>>>>>>
>>>>>>>>> ifconfig del ciente
>>>>>>>>>
>>>>>>>>> [usuario at cliente ~]$ ifconfig
>>>>>>>>> enp9s0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
>>>>>>>>> ether a4:ba:db:b7:0b:08 txqueuelen 1000 (Ethernet)
>>>>>>>>> RX packets 0 bytes 0 (0.0 B)
>>>>>>>>> RX errors 0 dropped 0 overruns 0 frame 0
>>>>>>>>> TX packets 0 bytes 0 (0.0 B)
>>>>>>>>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>>>>>>> device interrupt 18
>>>>>>>>>
>>>>>>>>> lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
>>>>>>>>> inet 127.0.0.1 netmask 255.0.0.0
>>>>>>>>> inet6 ::1 prefixlen 128 scopeid 0x10<host>
>>>>>>>>> loop txqueuelen 0 (Local Loopback)
>>>>>>>>> RX packets 10 bytes 756 (756.0 B)
>>>>>>>>> RX errors 0 dropped 0 overruns 0 frame 0
>>>>>>>>> TX packets 10 bytes 756 (756.0 B)
>>>>>>>>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>>>>>>>
>>>>>>>>> virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
>>>>>>>>> inet 192.168.122.1 netmask 255.255.255.0 broadcast
>>>>>>>>> 192.168.122.255
>>>>>>>>> ether 52:54:00:53:ac:c9 txqueuelen 0 (Ethernet)
>>>>>>>>> RX packets 0 bytes 0 (0.0 B)
>>>>>>>>> RX errors 0 dropped 0 overruns 0 frame 0
>>>>>>>>> TX packets 0 bytes 0 (0.0 B)
>>>>>>>>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>>>>>>>
>>>>>>>>> wlp12s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
>>>>>>>>> inet 192.168.1.42 netmask 255.255.255.0 broadcast
>>>>>>>>> 192.168.1.255
>>>>>>>>> inet6 fe80::e60:76ff:fe2f:29d9 prefixlen 64 scopeid
>>>>>>>>> 0x20<link>
>>>>>>>>> ether 0c:60:76:2f:29:d9 txqueuelen 1000 (Ethernet)
>>>>>>>>> RX packets 18 bytes 2027 (1.9 KiB)
>>>>>>>>> RX errors 0 dropped 0 overruns 0 frame 20284
>>>>>>>>> TX packets 42 bytes 5704 (5.5 KiB)
>>>>>>>>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>>>>>>> device interrupt 17 base 0xc000
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> iptables del cliente
>>>>>>>>>
>>>>>>>>> [usuario at cliente ~]# service iptables status
>>>>>>>>> Redirecting to /bin/systemctl status iptables.service
>>>>>>>>> ● iptables.service
>>>>>>>>> Loaded: not-found (Reason: No such file or directory)
>>>>>>>>> Active: inactive (dead)
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> ------------------------------------
>>>>>>>>> 4. netstat y nap
>>>>>>>>> ------------------------------------
>>>>>>>>>
>>>>>>>>> netstat en el server, muestra el puerto 5432 abierto, no se si
>>>>>>>>> correctamente
>>>>>>>>>
>>>>>>>>> [usuario at server ~]# netstat -nltp | grep 5432
>>>>>>>>> tcp 0 0 0.0.0.0:5432 0.0.0.0:*
>>>>>>>>> LISTEN 6642/postgres
>>>>>>>>> tcp6 0 0 :::5432
>>>>>>>>> :::* LISTEN 6642/postgres
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> nmap desde el cliente, aca parece haber algo raro porque ve otros
>>>>>>>>> puertos pero no el 5432
>>>>>>>>>
>>>>>>>>> [usuario at cliente ~]# nmap 192.168.1.43
>>>>>>>>>
>>>>>>>>> Starting Nmap 6.40 ( http://nmap.org ) at 2016-04-29 14:48 UYT
>>>>>>>>> Nmap scan report for mdw.southx.io (192.168.1.43)
>>>>>>>>> Host is up (0.018s latency).
>>>>>>>>> Not shown: 997 filtered ports
>>>>>>>>> PORT STATE SERVICE
>>>>>>>>> 22/tcp open ssh
>>>>>>>>> 139/tcp closed netbios-ssn
>>>>>>>>> 445/tcp closed microsoft-ds
>>>>>>>>> MAC Address: 18:4F:32:CA:29:7D (Unknown)
>>>>>>>>>
>>>>>>>>> Nmap done: 1 IP address (1 host up) scanned in 6.83 seconds
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> ------------------------------------
>>>>>>>>>
>>>>>>>>> No entiendo porque no lo ve si el nmap lo muestra abierto
>>>>>>>>> Podra ser porque esta con 0.0.0.0 y no especificamente con
>>>>>>>>> 192.168.1.43 ???
>>>>>>>>>
>>>>>>>>> Desde ya muchas gracias
>>>>>>>>>
>>>>>>>>> ------------------------------------
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> ---------------------------------------------
>>>>>>>>>
>>>>>>>>> SouthX
>>>>>>>>> https://southx.io
>>>>>>>>> BigData
>>>>>>>>>
>>>>>>>>> Digicoins
>>>>>>>>> https://digicoins.cash
>>>>>>>>> Bitcoin
>>>>>>>>>
>>>>>>>>> Dante Castiglione Maldonado
>>>>>>>>> dac.maldonado at gmail.com
>>>>>>>>>
>>>>>>>>> ---------------------------------------------
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On 29 April 2016 at 11:08, Eduardo Trápani <etrapani at gmail.com>
>>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>> > Tengo dos maquinas en la wifi, las dos con CentOS 7
>>>>>>>>> > 192.168.1.43 (DB server) y 192.168.1.42 (DB client)
>>>>>>>>> >
>>>>>>>>> > ping responde bien en ambos sentidos
>>>>>>>>> > en ambas maquinas iptables service dice inactive (dead)
>>>>>>>>>
>>>>>>>>> ¿Podés pegar la salida de ifconfig en ambos equipos?
>>>>>>>>>
>>>>>>>>> Eduardo.
>>>>>>>>> _______________________________________________
>>>>>>>>> Uylug-varios mailing list
>>>>>>>>> Uylug-varios at listas.uylug.org.uy
>>>>>>>>>
>>>>>>>>> http://listas.uylug.org.uy/listinfo.cgi/uylug-varios-uylug.org.uy
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> Uylug-varios mailing list
>>>>>>>> Uylug-varios at listas.uylug.org.uy
>>>>>>>> http://listas.uylug.org.uy/listinfo.cgi/uylug-varios-uylug.org.uy
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> Uylug-varios mailing list
>>>>>>>> Uylug-varios at listas.uylug.org.uy
>>>>>>>> http://listas.uylug.org.uy/listinfo.cgi/uylug-varios-uylug.org.uy
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Enrique M. Verdes
>>>>>>> <https://uy.linkedin.com/pub/enrique-verdes/1/794/ba8>
>>>>>>>
>>>>>>> "As we enjoy great advantages from the inventions of others, we
>>>>>>> should be glad of an opportunity to serve others by any invention of ours;
>>>>>>> and this we should do freely and generously."
>>>>>>>
>>>>>>> Benjamin Franklin
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> Uylug-varios mailing list
>>>>>>> Uylug-varios at listas.uylug.org.uy
>>>>>>> http://listas.uylug.org.uy/listinfo.cgi/uylug-varios-uylug.org.uy
>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Uylug-varios mailing list
>>>>> Uylug-varios at listas.uylug.org.uy
>>>>> http://listas.uylug.org.uy/listinfo.cgi/uylug-varios-uylug.org.uy
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Enrique M. Verdes
>>>> <https://uy.linkedin.com/pub/enrique-verdes/1/794/ba8>
>>>>
>>>> "As we enjoy great advantages from the inventions of others, we should
>>>> be glad of an opportunity to serve others by any invention of ours; and
>>>> this we should do freely and generously."
>>>>
>>>> Benjamin Franklin
>>>>
>>>> _______________________________________________
>>>> Uylug-varios mailing list
>>>> Uylug-varios at listas.uylug.org.uy
>>>> http://listas.uylug.org.uy/listinfo.cgi/uylug-varios-uylug.org.uy
>>>>
>>>>
>>>
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>>>
>>>
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>>
>
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>
--
Enrique M. Verdes
<https://uy.linkedin.com/pub/enrique-verdes/1/794/ba8>
"As we enjoy great advantages from the inventions of others, we should be
glad of an opportunity to serve others by any invention of ours; and this
we should do freely and generously."
Benjamin Franklin
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