Jail starts but doesn't start

[Paul Schenkeveld]

On Wed, May 04, 2011 at 04:24:11PM -0700, Mickey Harvey wrote:
> Hosts /etc/rc.conf
> 
>    1. ifconfig_bge0="inet 192.168.224.11 netmask 255.255.255.0"
>    2. defaultrouter="192.168.224.1"
>    3. sshd_enable="YES"
>    4.
>    5. linux_enable="YES"
>    6. zfs_enable="YES"
>    7. jail_enable="YES"
>    8. jail_list="www0 dns0 smarty0 centos"
>    9.
>    10. ifconfig_bge0_alias0="inet 192.168.224.12 netmask 255.255.255.255"
>    11. jail_www0_rootdir="/tank/jails/www0"
>    12. jail_www0_hostname="www0"
>    13. jail_www0_ip="192.168.224.12"
>    14. jail_www0_devfs_enable="YES"
>    15. jail_www0_exec_stop="/etc/rc.shutdown"
>    16.
>    17. #JAIL READY TO USE, JUST NEEDS APPROPRIATE FSTAB ENTRIES
>    18. #ENTRIES ARE IN LOADER.CONF
>    19. #TRIED TO BOOT WITH REQUIRED FSTAB BUT IT BROKE SO I REVERTED
>    20. #5/3/11 MH
>    21. #ifconfig_bge0_alias1="inet 192.168.224.13 netmask 255.255.255.255"
>    22. #jail_deb0_rootdir="/tank/jails/deb0"
>    23. #jail_deb0_hostname="deb0"
>    24. #jail_deb0_ip="192.168.224.13"
>    25. #jail_deb0_devfs_enable="YES"
>    26. #jail_deb0_exec_start="/etc/init.d/rc 3"
>    27. #jail_deb0_exec_stop="/etc/init.d/rc 0"
>    28. #jail_deb0_flags="-l -u root"
>    29.
>    30. ifconfig_bge0_alias1="inet 192.168.224.14 netmask 255.255.255.255"
>    31. jail_dns0_rootdir="/tank/jails/dns0"
>    32. jail_dns0_hostname="dns0"
>    33. jail_dns0_ip="192.168.224.14"
>    34. jail_dns0_devfs_enable="YES"
>    35. jail_dns0_exec_stop="/etc/rc.shutdown"
>    36.
>    37. ifconfig_bge0_alias2="inet 192.168.224.15 netmask 255.255.255.255"
>    38. jail_smarty0_rootdir="/tank/jails/smarty0"
>    39. jail_smarty0_hostname="smarty0"
>    40. jail_smarty0_ip="192.168.224.15"
>    41. jail_smarty0_devfs_enable="YES"
>    42. jail_smarty0_exec_stop="/etc/rc.shutdown"
>    43.
>    44. ifconfig_bge0_alias3="inet 192.168.224.16 netmask 255.255.255.255"
>    45. jail_centos_rootdir="/tank/jails/centos"
>    46. jail_centos_hostname="centos"
>    47. jail_centos_ip="192.168.224.16"
>    48. jail_centos_devfs_enable="YES"
> 
> 
> Result of jls after /etc/rc.d/jail start centos (notice there's no entry for
> centos)
> 
>    JID  IP Address      Hostname                      Path
>      1  192.168.224.12  www0                          /tank/jails/www0
>      2  192.168.224.14  dns0                          /tank/jails/dns0
>      3  192.168.224.15  smarty0                       /tank/jails/smarty0
> 
> 
> No error messages when starting or stopping centos jail.
> /var/run contains jail_centos.id
> Alias exists on bge0.
> 
> So I tried "jexec 4 /bin/bash" figuring jls just isn't showing the centos
> jail for some reason but:
> jexec: jail_attach(4): Invalid argument
> 
> Anybody have any idea about what might be happening here?

This usually happens when there are no processes running in the jail to
keep it up.  By default, jails started thru rc.d/jail are not persistent.
Try adding something like cron_enable="YES" to rc.conf inside the jail.

Regards,

Paul Schenkeveld