[sisyphus] dns и etcnet

[sisyphus] dns и etcnet

[Eugene Prokopiev]

Здравствуйте!

Скажите, с etcnet нужно как-то по особенному настраивать соответствие 
адресов хостов и имен? У меня не пингуются не только dns-имена, но даже 
имена, прописанные в /etc/hosts:

root@test ~ # cat /etc/sysconfig/network
# When set to no, this may cause most daemons' initscripts skip starting.
NETWORKING=yes
# Used by hotplug/pcmcia/ifplugd scripts to detect current network config
# subsystem.
CONFMETHOD=etcnet
# Used by rc.sysinit to setup system hostname at boot.
#HOSTNAME=
#DOMAINNAME=
DOMAINNAME=mydomain.com
HOSTNAME=test.mydomain.com

root@test ~ # cat /etc/net/ifaces/eth0/ipv4address
192.168.46.100/24

root@test ~ # cat /etc/net/ifaces/eth0/ipv4route
192.168.0.0/16 via 192.168.46.1

root@test ~ # cat /etc/net/ifaces/eth0/options
MODULE=3c59x

root@test ~ # cat /etc/host.conf
order hosts,bind
multi on

root@test ~ # cat /etc/hosts
127.0.0.1       localhost.localdomain localhost
192.168.46.100  test.mydomain.com test

root@test ~ # hostname
test.mydomain.com

root@test ~ # ping test.mydomain.com
ping: unknown host test.mydomain.com

root@test ~ # ping test
ping: unknown host test

root@test ~ # ping 192.168.46.100
PING 192.168.46.100 (192.168.46.100) 56(84) bytes of data.
64 bytes from 192.168.46.100: icmp_seq=1 ttl=64 time=0.031 ms
64 bytes from 192.168.46.100: icmp_seq=2 ttl=64 time=0.013 ms

--- 192.168.46.100 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 0.013/0.022/0.031/0.009 ms


-- 
С уважением, Прокопьев Евгений

Re: [sisyphus] dns и etcnet

[Шенцев Алексей Владимирович]

В сообщении от 24 марта 2006 17:02 Eugene Prokopiev написал(a):
> Здравствуйте!
Привет.
>
> Скажите, с etcnet нужно как-то по особенному настраивать соответствие
> адресов хостов и имен? 
Насколько знаю нет.
> У меня не пингуются не только dns-имена, но даже 
> имена, прописанные в /etc/hosts:
А что говорит bind? Что видно в # cat /var/log/syslog/messages | grep bind && 
cat /var/log/syslog/messages | grep named ?

-- 
С уважением, Шенцев Алексей Владимирович (AShen)
E-mail: ashen@nsrz.ru
ICQ: 271053845

Re: [sisyphus] dns и etcnet

[Eugene Prokopiev]

Шенцев Алексей Владимирович пишет:
> В сообщении от 24 марта 2006 17:02 Eugene Prokopiev написал(a):
> 
>>Здравствуйте!
> 
> Привет.
> 
>>Скажите, с etcnet нужно как-то по особенному настраивать соответствие
>>адресов хостов и имен? 
> 
> Насколько знаю нет.
> 
>>У меня не пингуются не только dns-имена, но даже 
>>имена, прописанные в /etc/hosts:
> 
> А что говорит bind? Что видно в # cat /var/log/syslog/messages | grep bind && 
> cat /var/log/syslog/messages | grep named ?

На этой машине нет сервера dns

А кроме того, проблемы даже с /etc/hosts

-- 
С уважением, Прокопьев Евгений

Re: [sisyphus] dns и etcnet

[Sergey]

On Friday 24 March 2006 19:04, Eugene Prokopiev wrote:

> А кроме того, проблемы даже с /etc/hosts

Этот файл никак не связан с etcnet... Приложение само вольно
смотреть или не смотреть туда. На сколько я в курсе...

-- 
С уважением, Сергей
a_s_y@sama.ru

Re: [sisyphus] dns и etcnet

[Alexey Borovskoy]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Eugene Prokopiev пишет:
> Здравствуйте!
> 
> Скажите, с etcnet нужно как-то по особенному настраивать соответствие 
> адресов хостов и имен? У меня не пингуются не только dns-имена, но даже 
> имена, прописанные в /etc/hosts:

update_chrooted all

- --
Алексей.
GPG key fingerprint
949B BC0E 2C44 7528 4F63  2753 E37A 9E3F 11F3 BDE1
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.5 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQFEJUGo43qePxHzveERAmmkAJ4oUDE57ahxloiD2b290fLpHnKMiQCdFyxK
hb62FeWDIF2WEAFqxdvvtcs=
=BdDW
-----END PGP SIGNATURE-----

Re: [sisyphus] dns и etcnet

[Eugene Prokopiev]

Выяснилось, что виноват сам ping, т.к. простейшая программка на С, 
использующая gethostbyname, адреса вполне себе разрешает.

Полный вывод strace -f ping test в аттаче. Мне непонятен следующий фрагмент:

chroot("/var/resolv")                   = 0
chdir("/")                              = 0
setgid32(101)                           = 0
setuid32(100)                           = 0
open("/dev/urandom", O_RDONLY)          = -1 ENOENT (No such file or 
directory)
getpid()                                = 2824
getppid()                               = 2823
gettimeofday({1143540140, 102722}, NULL) = 0
getpid()                                = 2824
open("/dev/urandom", O_RDONLY)          = -1 ENOENT (No such file or 
directory)
times({tms_utime=0, tms_stime=0, tms_cutime=0, tms_cstime=0}) = 1718341389
open("/etc/resolv.conf", O_RDONLY)      = -1 EACCES (Permission denied)

Ну ладно, /dev/urandom в чруте действительно отсутствует, но 
/etc/resolv.conf на месте и с нормальными правами:

# ls -lR /var/resolv
/var/resolv:
total 12
drwx------ 2 root root 4096 Mar 24 20:00 etc
drwxr-xr-x 2 root root 4096 Mar 21 13:35 lib
drwxr-xr-x 4 root root 4096 Mar 20 11:34 var

/var/resolv/etc:
total 44
-rw-r--r-- 1 root root    26 Jan 19  2004 host.conf
-rw-r--r-- 1 root root    80 Mar 24 20:00 hosts
-rw-r--r-- 1 root root   815 Mar  6 13:36 localtime
-rw-r--r-- 1 root root  1854 Nov 10  2002 nsswitch.conf
-rw-r--r-- 1 root root    24 Mar 24 19:43 resolv.conf
-rw-r--r-- 1 root root 24450 Jul  2  2005 services

/var/resolv/lib:
total 300
-rwxr-xr-x 1 root root 72592 Mar 11 23:19 libnsl.so.1
-rw-r--r-- 1 root root 17760 Jan 10 03:16 libnss_dns.so.2
-rw-r--r-- 1 root root 34180 Jan 10 03:16 libnss_files.so.2
-rwxr-xr-x 1 root root 17772 Mar 11 23:19 libnss_hesiod.so.2
-rw-r--r-- 1 root root 34232 May 26  2005 libnss_nis.so.2
-rw-r--r-- 1 root root 42344 Jan 10 03:16 libnss_nisplus.so.2
-rwxr-xr-x 1 root root 63220 Mar 11 23:18 libresolv.so.2

/var/resolv/var:
total 8
drwxr-xr-x 2 root root 4096 Sep  5  2005 nis
drwxr-xr-x 3 root root 4096 Mar 20 11:34 yp

/var/resolv/var/nis:
total 0

/var/resolv/var/yp:
total 4
drwxr-xr-x 2 root root 4096 Sep  5  2005 binding

/var/resolv/var/yp/binding:
total 0

В чем тогда дело?

-- 
С уважением, Прокопьев Евгений

Re: [sisyphus] dns и etcnet

[Eugene Prokopiev]

[-- Attachment #1: Type: text/plain, Size: 110 bytes --]

> Полный вывод strace -f ping test в аттаче

вот теперь в аттаче :)

-- 
С уважением, Прокопьев Евгений

[-- Attachment #2: ping-strace.log --]
[-- Type: text/x-log, Size: 10578 bytes --]

execve("/bin/ping", ["ping", "test"], [/* 27 vars */]) = 0
uname({sys="Linux", node="test.mydomain.com", ...}) = 0
brk(0)                                  = 0x8063000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=10730, ...}) = 0
mmap2(NULL, 10730, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f35000
close(3)                                = 0
open("/lib/libc.so.6", O_RDONLY)        = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\240U\1"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1140208, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f34000
mmap2(NULL, 1146964, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7e1b000
mmap2(0xb7f2d000, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x112) = 0xb7f2d000
mmap2(0xb7f31000, 8276, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7f31000
close(3)                                = 0
mprotect(0xb7f2d000, 4096, PROT_READ)   = 0
munmap(0xb7f35000, 10730)               = 0
fstat64(0, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 0), ...}) = 0
fstat64(1, {st_mode=S_IFREG|0644, st_size=1238, ...}) = 0
fstat64(2, {st_mode=S_IFREG|0644, st_size=1296, ...}) = 0
socket(PF_INET, SOCK_RAW, IPPROTO_ICMP) = 3
getuid32()                              = 0
setgroups32(0, [])                      = 0
brk(0)                                  = 0x8063000
brk(0x8084000)                          = 0x8084000
socket(PF_FILE, SOCK_STREAM, 0)         = 4
fcntl64(4, F_GETFL)                     = 0x2 (flags O_RDWR)
fcntl64(4, F_SETFL, O_RDWR|O_NONBLOCK)  = 0
connect(4, {sa_family=AF_FILE, path="/var/run/nscd/socket"}, 110) = -1 ENOENT (No such file or directory)
close(4)                                = 0
socket(PF_FILE, SOCK_STREAM, 0)         = 4
fcntl64(4, F_GETFL)                     = 0x2 (flags O_RDWR)
fcntl64(4, F_SETFL, O_RDWR|O_NONBLOCK)  = 0
connect(4, {sa_family=AF_FILE, path="/var/run/nscd/socket"}, 110) = -1 ENOENT (No such file or directory)
close(4)                                = 0
open("/etc/nsswitch.conf", O_RDONLY)    = 4
fstat64(4, {st_mode=S_IFREG|0644, st_size=1854, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f37000
read(4, "#\n# Please refer to nsswitch.con"..., 4096) = 1854
read(4, "", 4096)                       = 0
close(4)                                = 0
munmap(0xb7f37000, 4096)                = 0
open("/etc/ld.so.cache", O_RDONLY)      = 4
fstat64(4, {st_mode=S_IFREG|0644, st_size=10730, ...}) = 0
mmap2(NULL, 10730, PROT_READ, MAP_PRIVATE, 4, 0) = 0xb7f35000
close(4)                                = 0
open("/lib/libnss_files.so.2", O_RDONLY) = 4
read(4, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\320\32"..., 512) = 512
fstat64(4, {st_mode=S_IFREG|0644, st_size=34180, ...}) = 0
mmap2(NULL, 37508, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 4, 0) = 0xb7e11000
mmap2(0xb7e19000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 4, 0x7) = 0xb7e19000
close(4)                                = 0
munmap(0xb7f35000, 10730)               = 0
open("/etc/passwd", O_RDONLY)           = 4
fcntl64(4, F_GETFD)                     = 0
fcntl64(4, F_SETFD, FD_CLOEXEC)         = 0
fstat64(4, {st_mode=S_IFREG|0644, st_size=1703, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f37000
read(4, "root:x:0:0:System Administrator:"..., 4096) = 1703
close(4)                                = 0
munmap(0xb7f37000, 4096)                = 0
chroot("/var/resolv")                   = 0
chdir("/")                              = 0
setgid32(101)                           = 0
setuid32(100)                           = 0
open("/dev/urandom", O_RDONLY)          = -1 ENOENT (No such file or directory)
getpid()                                = 2824
getppid()                               = 2823
gettimeofday({1143540140, 102722}, NULL) = 0
getpid()                                = 2824
open("/dev/urandom", O_RDONLY)          = -1 ENOENT (No such file or directory)
times({tms_utime=0, tms_stime=0, tms_cutime=0, tms_cstime=0}) = 1718341389
open("/etc/resolv.conf", O_RDONLY)      = -1 EACCES (Permission denied)
uname({sys="Linux", node="test.mydomain.com", ...}) = 0
socket(PF_FILE, SOCK_STREAM, 0)         = 4
fcntl64(4, F_GETFL)                     = 0x2 (flags O_RDWR)
fcntl64(4, F_SETFL, O_RDWR|O_NONBLOCK)  = 0
connect(4, {sa_family=AF_FILE, path="/var/run/nscd/socket"}, 110) = -1 ENOENT (No such file or directory)
close(4)                                = 0
socket(PF_FILE, SOCK_STREAM, 0)         = 4
fcntl64(4, F_GETFL)                     = 0x2 (flags O_RDWR)
fcntl64(4, F_SETFL, O_RDWR|O_NONBLOCK)  = 0
connect(4, {sa_family=AF_FILE, path="/var/run/nscd/socket"}, 110) = -1 ENOENT (No such file or directory)
close(4)                                = 0
open("/etc/host.conf", O_RDONLY)        = -1 EACCES (Permission denied)
open("/etc/hosts", O_RDONLY)            = -1 EACCES (Permission denied)
open("/etc/ld.so.cache", O_RDONLY)      = -1 EACCES (Permission denied)
open("/lib/tls/i686/sse2/libnss_nisplus.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/tls/i686/sse2", 0xbff4a650) = -1 ENOENT (No such file or directory)
open("/lib/tls/i686/libnss_nisplus.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/tls/i686", 0xbff4a650)     = -1 ENOENT (No such file or directory)
open("/lib/tls/sse2/libnss_nisplus.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/tls/sse2", 0xbff4a650)     = -1 ENOENT (No such file or directory)
open("/lib/tls/libnss_nisplus.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/tls", 0xbff4a650)          = -1 ENOENT (No such file or directory)
open("/lib/i686/sse2/libnss_nisplus.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/i686/sse2", 0xbff4a650)    = -1 ENOENT (No such file or directory)
open("/lib/i686/libnss_nisplus.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/i686", 0xbff4a650)         = -1 ENOENT (No such file or directory)
open("/lib/sse2/libnss_nisplus.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/sse2", 0xbff4a650)         = -1 ENOENT (No such file or directory)
open("/lib/libnss_nisplus.so.2", O_RDONLY) = 4
read(4, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\200\31"..., 512) = 512
fstat64(4, {st_mode=S_IFREG|0644, st_size=42344, ...}) = 0
mmap2(NULL, 45564, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 4, 0) = 0xb7e05000
mmap2(0xb7e0f000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 4, 0x9) = 0xb7e0f000
close(4)                                = 0
open("/lib/libnsl.so.1", O_RDONLY)      = 4
read(4, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\3204\0"..., 512) = 512
fstat64(4, {st_mode=S_IFREG|0755, st_size=72592, ...}) = 0
mmap2(NULL, 83968, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 4, 0) = 0xb7df0000
mmap2(0xb7e01000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 4, 0x10) = 0xb7e01000
mmap2(0xb7e03000, 6144, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7e03000
close(4)                                = 0
uname({sys="Linux", node="test.mydomain.com", ...}) = 0
open("/var/nis/NIS_COLD_START", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/var/nis/NIS_COLD_START", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib/libnss_nis.so.2", O_RDONLY)  = 4
read(4, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\360\33"..., 512) = 512
fstat64(4, {st_mode=S_IFREG|0644, st_size=34232, ...}) = 0
mmap2(NULL, 37408, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 4, 0) = 0xb7de6000
mmap2(0xb7dee000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 4, 0x7) = 0xb7dee000
close(4)                                = 0
uname({sys="Linux", node="test.mydomain.com", ...}) = 0
open("/lib/libnss_dns.so.2", O_RDONLY)  = 4
read(4, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\300\r\0"..., 512) = 512
fstat64(4, {st_mode=S_IFREG|0644, st_size=17760, ...}) = 0
mmap2(NULL, 20612, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 4, 0) = 0xb7de0000
mmap2(0xb7de4000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 4, 0x3) = 0xb7de4000
close(4)                                = 0
open("/lib/libresolv.so.2", O_RDONLY)   = 4
read(4, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\320%\0"..., 512) = 512
fstat64(4, {st_mode=S_IFREG|0755, st_size=63220, ...}) = 0
mmap2(NULL, 76720, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 4, 0) = 0xb7dcd000
mmap2(0xb7ddc000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 4, 0xe) = 0xb7ddc000
mmap2(0xb7dde000, 7088, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7dde000
close(4)                                = 0
open("/dev/urandom", O_RDONLY)          = -1 ENOENT (No such file or directory)
getpid()                                = 2824
getppid()                               = 2823
gettimeofday({1143540140, 106318}, NULL) = 0
getpid()                                = 2824
open("/dev/urandom", O_RDONLY)          = -1 ENOENT (No such file or directory)
times({tms_utime=0, tms_stime=0, tms_cutime=0, tms_cstime=0}) = 1718341389
socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 4
connect(4, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("0.0.0.0")}, 28) = 0
fcntl64(4, F_GETFL)                     = 0x2 (flags O_RDWR)
fcntl64(4, F_SETFL, O_RDWR|O_NONBLOCK)  = 0
gettimeofday({1143540140, 106717}, NULL) = 0
poll([{fd=4, events=POLLOUT, revents=POLLOUT}], 1, 0) = 1
send(4, "\237\311\1\0\0\1\0\0\0\0\0\0\4test\10mydomain\3com\0\0"..., 35, 0) = 35
poll([{fd=4, events=POLLIN, revents=POLLERR}], 1, 5000) = 1
close(4)                                = 0
socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 4
connect(4, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("0.0.0.0")}, 28) = 0
fcntl64(4, F_GETFL)                     = 0x2 (flags O_RDWR)
fcntl64(4, F_SETFL, O_RDWR|O_NONBLOCK)  = 0
gettimeofday({1143540140, 107085}, NULL) = 0
poll([{fd=4, events=POLLOUT, revents=POLLOUT}], 1, 0) = 1
send(4, "\237\311\1\0\0\1\0\0\0\0\0\0\4test\10mydomain\3com\0\0"..., 35, 0) = 35
poll([{fd=4, events=POLLIN, revents=POLLERR}], 1, 5000) = 1
close(4)                                = 0
write(2, "ping: unknown host test\n", 24ping: unknown host test
) = 24
exit_group(2)                           = ?
Process 2824 detached

Re: [sisyphus] dns и etcnet

[Alexey I. Froloff]

[-- Attachment #1: Type: text/plain, Size: 657 bytes --]

* Eugene Prokopiev <prokopiev@> [060328 12:03]:
> > Полный вывод strace -f ping test в аттаче
> вот теперь в аттаче :)

> chroot("/var/resolv")                   = 0
> chdir("/")                              = 0
[..skip..]
> open("/etc/host.conf", O_RDONLY)        = -1 EACCES (Permission denied)
> open("/etc/hosts", O_RDONLY)            = -1 EACCES (Permission denied)
> open("/etc/ld.so.cache", O_RDONLY)      = -1 EACCES (Permission denied)
Попрчен /var/resolv

-- 
Regards, Alexey I. Froloff
AIF5-RIPN, AIF5-RIPE
-------------------------------------------
  Inform-Mobil, Ltd. System Administrator
       http://www.inform-mobil.ru/

[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 191 bytes --]

Re: [sisyphus] dns и etcnet

[Yuriy Kashirin]

On Tuesday 28 March 2006 10:11, Eugene Prokopiev wrote:
> Полный вывод strace -f ping test в аттаче. Мне непонятен следующий
> фрагмент:
>
> chroot("/var/resolv")                   = 0
> chdir("/")                              = 0
> setgid32(101)                           = 0
           ^^^
> setuid32(100)                           = 0
           ^^^
[skiped]
> 1718341389 open("/etc/resolv.conf", O_RDONLY)      = -1 EACCES
> (Permission denied)
>
> Ну ладно, /dev/urandom в чруте действительно отсутствует, но
> /etc/resolv.conf на месте и с нормальными правами:
>
> # ls -lR /var/resolv
> /var/resolv:
> total 12
> drwx------ 2 root root 4096 Mar 24 20:00 etc
  ^^^^^^^^^^^^^^^^^^^^^^

/etc с ненормальными правами для юзера 101 -- он не может в этот 
директорий войти, чтобы хоть какой-то файл открыть.

> drwxr-xr-x 2 root root 4096 Mar 21 13:35 lib
> drwxr-xr-x 4 root root 4096 Mar 20 11:34 var
>
> /var/resolv/etc:
> total 44
> -rw-r--r-- 1 root root    26 Jan 19  2004 host.conf
> -rw-r--r-- 1 root root    80 Mar 24 20:00 hosts
> -rw-r--r-- 1 root root   815 Mar  6 13:36 localtime
> -rw-r--r-- 1 root root  1854 Nov 10  2002 nsswitch.conf
> -rw-r--r-- 1 root root    24 Mar 24 19:43 resolv.conf
> -rw-r--r-- 1 root root 24450 Jul  2  2005 services

-- 
 Best regards
 Yuriy Kashirin