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OldTango
l33t
l33t


Joined: 21 Feb 2004
Posts: 628

PostPosted: Mon Dec 30, 2019 1:46 am    Post subject: Networking issues with ssh and rsync Reply with quote

It was necessary to replace my 10+ year old Gentoo Server "MasterTux" because the hardware was failing. So I decided to do a fresh install rather than just syncing the old system to new drives. Networking was setup using Gentoo's Home Router Guide several years ago. I reused the configs from the old server where everything worked very well. The Server is using dhcpcd and dnsmasq.

All clients on the LAN have internet access, dnsmasq is assigning the correct IP's to the correct devices and IP printing is working. However no clients on the LAN can sync to the Servers "portage repo" and No client can ssh to the Server using it's hostname. So I have seriously missed something but don't know where.

Syncing errors from the clients:
Code:

@ERROR: chroot failed
rsync error: error starting client-server protocol (code 5) at main.c(1657) [Receiver=3.1.3]
!!! Exhausted addresses for 192.168.0.1


Clients: /etc/portage/repos.conf/gentoo.conf
Code:

[DEFAULT]
main-repo = gentoo

[gentoo]
location = /var/db/repos/gentoo
sync-type = rsync
#sync-uri = rsync://MasterTux/gentoo-portage <---Using this gives "!!! Exhausted all addresses for Mastertux"
sync-uri = rsync://192.168.0.1/gentoo-portage <---Using this gives above error
auto-sync = yes


Servers: /etc/rsyncd.conf
Code:


# Minimal configuration file for rsync daemon
# See rsync(1) and rsyncd.conf(5) man pages for help

# This line is required by the /etc/init.d/rsyncd script
pid file = /run/rsyncd.pid
use chroot = yes
read only = yes
address= 192.168.0.1
# Simple example for enabling your own local rsync server
[gentoo-portage]
        path = /usr/portage
        comment = Gentoo Portage tree
        exclude = /distfiles /packages



Can only SSH to "MasterTux" using:
Code:

ssh someuser@192.168.0.1

Attempting to use:
Code:

ssh someuser@MasterTux

only results in logging into the client I am attempting to log in from?

Code:
uname -a
Linux MasterTux 4.19.86-gentoo #3 SMP Wed Dec 25 11:47:37 MST 2019 x86_64 AMD Ryzen 7 2700X Eight-Core Processor AuthenticAMD GNU/Linux

Code:
emerge --info
Portage 2.3.79 (python 3.6.9-final-0, default/linux/amd64/17.1, gcc-9.2.0, glibc-2.29-r7, 4.19.86-gentoo x86_64)
=================================================================
System uname: Linux-4.19.86-gentoo-x86_64-AMD_Ryzen_7_2700X_Eight-Core_Processor-with-gentoo-2.6
KiB Mem:    32953136 total,  32203360 free
KiB Swap:          0 total,         0 free
Timestamp of repository gentoo: Sun, 29 Dec 2019 09:00:01 +0000
Head commit of repository gentoo: 459d4f6de5da4180d8dd86f6b1d239058e21abff
sh bash 4.4_p23-r1
ld GNU ld (Gentoo 2.32 p2) 2.32.0
app-shells/bash:          4.4_p23-r1::gentoo
dev-lang/perl:            5.30.1::gentoo
dev-lang/python:          2.7.17::gentoo, 3.6.9::gentoo
dev-util/cmake:           3.14.6::gentoo
sys-apps/baselayout:      2.6-r1::gentoo
sys-apps/openrc:          0.41.2::gentoo
sys-apps/sandbox:         2.13::gentoo
sys-devel/autoconf:       2.13-r1::gentoo, 2.69-r4::gentoo
sys-devel/automake:       1.13.4-r2::gentoo, 1.16.1-r1::gentoo
sys-devel/binutils:       2.32-r1::gentoo
sys-devel/gcc:            9.2.0-r2::gentoo
sys-devel/gcc-config:     2.1::gentoo
sys-devel/libtool:        2.4.6-r3::gentoo
sys-devel/make:           4.2.1-r4::gentoo
sys-kernel/linux-headers: 4.19::gentoo (virtual/os-headers)
sys-libs/glibc:           2.29-r7::gentoo
Repositories:

gentoo
    location: /var/db/repos/gentoo
    sync-type: rsync
    sync-uri: rsync://rsync.gentoo.org/gentoo-portage
    priority: -1000
    sync-rsync-extra-opts:
    sync-rsync-verify-jobs: 1
    sync-rsync-verify-max-age: 24
    sync-rsync-verify-metamanifest: yes

Installed sets: @mate-extras
ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="@FREE"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=znver2 -O2 -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo"
CXXFLAGS="-march=znver2 -O2 -pipe"
DISTDIR="/var/cache/distfiles"
ENV_UNSET="DBUS_SESSION_BUS_ADDRESS DISPLAY GOBIN PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR"
FCFLAGS="-march=znver2 -O2 -pipe"
FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync multilib-strict network-sandbox news parallel-fetch pid-sandbox preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"
FFLAGS="-march=znver2 -O2 -pipe"
GENTOO_MIRRORS="http://distfiles.gentoo.org"
LANG="en_US.utf8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j17"
PKGDIR="/var/cache/binpkgs"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --exclude=/.git"
PORTAGE_TMPDIR="/var/tmp"
USE="X acl acpi amd64 berkdb bzip2 caja cli consolekit crypt cups cxx dbus dri ffmpeg fortran gdbm gtk iconv ipv6 libnotify libtirpc mate multilib ncurses nls nptl openal opengl openmp pam pcre policykit pulseaudio python readline seccomp split-usr sqlite ssl tcpd unicode usb xattr zlib" ABI_X86="64 32" ADA_TARGET="gnat_2018" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="karbon sheets words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx avx2 f16c fma3 mmx mmxext pclmul popcnt sha sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" NETBEANS_MODULES="apisupport cnd groovy gsf harness ide identity j2ee java mobility nb php profiler soa visualweb webcommon websvccommon xml" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php7-2" POSTGRES_TARGETS="postgres10 postgres11" PYTHON_SINGLE_TARGET="python3_6" PYTHON_TARGETS="python2_7 python3_6" RUBY_TARGETS="ruby24 ruby25" USERLAND="GNU" VIDEO_CARDS="nvidia" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account"
Unset:  CC, CPPFLAGS, CTARGET, CXX, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, LINGUAS, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS


TIA Tango
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sdauth
Tux's lil' helper
Tux's lil' helper


Joined: 19 Sep 2018
Posts: 90
Location: Frankreich

PostPosted: Mon Dec 30, 2019 2:25 am    Post subject: Reply with quote

Hi,

OldTango wrote:
Servers: /etc/rsyncd.conf
Code:


# Minimal configuration file for rsync daemon
# See rsync(1) and rsyncd.conf(5) man pages for help

# This line is required by the /etc/init.d/rsyncd script
pid file = /run/rsyncd.pid
use chroot = yes
read only = yes
address= 192.168.0.1
# Simple example for enabling your own local rsync server
[gentoo-portage]
        path = /usr/portage
        comment = Gentoo Portage tree
        exclude = /distfiles /packages



Your path is wrong. It should point to /var/db/repos/gentoo
Also, "address" is not needed.

Here is mine :
Code:

pid file = /run/rsyncd.pid
use chroot = yes
read only = yes
max connections = 5
uid = nobody
gid = nobody
# Optional: restrict access to some Gentoo boxes
hosts allow = 192.168.10.0/24
hosts deny  = *
motd file = /etc/rsync/rsyncd.motd
 
[gentoo-portage]
path=/var/db/repos/gentoo
comment=Gentoo Repository
exclude=distfiles/ packages/


Concerning hostname, i'm not sure, maybe paste /etc/hosts here ? (setup aliases)

My /etc/hosts
Code:

# IPv4 and IPv6 localhost aliases
127.0.0.1   destroyer.lan destroyer localhost
::1         destroyer.lan destroyer localhost
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OldTango
l33t
l33t


Joined: 21 Feb 2004
Posts: 628

PostPosted: Mon Dec 30, 2019 2:58 am    Post subject: Reply with quote

sdauth wrote:
Hi,

Your path is wrong. It should point to /var/db/repos/gentoo
Also, "address" is not needed.


You are right about that. I had just caught it before I had a change to check back hear. Syncing is working again... :)

As for ssh I did add the server to the hosts file, something I have never had to do in the past. However it did solve my ssh issue.
Code:

127.0.0.1   SuperTux.homeland.net   SuperTux        localhost
::1             localhost
192.168.0.1     MasterTux.homeland.net  MasterTux

I still don't understand why this would be necessary. I thought dnsmasq's dns would solve the issue.

Best Tango
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