Excerpt from dnsmasq(8):
By default, the DHCP server will attempt to ensure that an address in not
in use before allocating it to a host. It does this by sending an ICMP echo
request (aka "ping") to the address in question. If it gets a reply, then the
address must already be in use, and another is tried. This flag disables this check.
This is useful if one expects all the containers to get an IP address
from the LXC authoritative DHCP server and wants to speed up the process
of getting a lease.
Signed-off-by: Jonathan Calmels <jcalmels@nvidia.com>
This patch wipe all references to lxc.network{[i]}.*
and replace with lxc.net.{[i]}.* in templates, documentation
and configuration files.
Signed-off-by: 0x0916 <w@laoqinren.net>
I found that even though the service lxc-net failed to start because I made some wrong configuration
settings the command exists zero.
So systemd reports the status of the service as good even though it failed:
# service lxc-net status
● lxc-net.service - LXC network bridge setup
Loaded: loaded (/lib/systemd/system/lxc-net.service; enabled)
Active: active (exited) since Wed 2017-02-08 08:17:32 EST; 21min ago
Process: 529 ExecStart=/usr/lib/x86_64-linux-gnu/lxc/lxc-net start (code=exited, status=0/SUCCESS)
Main PID: 529 (code=exited, status=0/SUCCESS)
CGroup: /system.slice/lxc-net.service
Feb 08 08:17:30 dvm2 systemd[1]: Starting LXC network bridge setup...
Feb 08 08:17:32 dvm2 lxc-net[529]: dnsmasq: failed to create listening socket for 10.2.2.1: Address already in use
Feb 08 08:17:32 dvm2 lxc-net[529]: Failed to setup lxc-net.
Feb 08 08:17:32 dvm2 systemd[1]: Started LXC network bridge setup.
Adding `exit 1` here makes it exit non-zero to make systemd recognize the failure.
Signed-off-by: Carsten Brandt <mail@cebe.cc>
* This script sets /dev/.lxc which is needed for autodev containers.
* Previously was only executed with systemd. Execute it also with
the other init systems (sysvinit and upstart)
Signed-off-by: Carlos Alberto Lopez Perez <clopez@igalia.com>
Fold dnsmasq command line at about 80 chars because the line is too
long.
Signed-off-by: TAMUKI Shoichi <tamuki@linet.gr.jp>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>
V2 changes:
- Keep using /var/lib for the lease file, but making it respect localstatedir
- Don't pass an empty --conf-file as that confuses dnsmasq when
/etc/dnsmasq.conf doesn't exist or isn't readable.
Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>
This updates lxc-net with the following changes:
- Better recover from crashes/partial runs
- Better error detection and reporting
- Less code duplication (use the stop code on crash)
- Better state tracking
- Allow for restart of all of lxc-net except for the bridge itself
- Only support iproute from this point on (ifconfig's been deprecated
for years)
V2: Use template variables everywhere
Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>
- RHEL/OL 7 doesn't have the ifconfig command by default so have the
lxc-net script check for its existence before use, and fall back
to using the ip command if ifconfig is not available
- When lxc-net is run from systemd on a system with selinux enabled,
the mkdir -p ${varrun} will create /run/lxc as init_var_run_t which
dnsmasq can't write its pid into, so we restorecon it
after creation (to var_run_t)
- The lxc-net systemd .service file needs an [Install] section so that
"systemctl enable lxc-net" will work
Signed-off-by: Dwight Engen <dwight.engen@oracle.com>
Interfaces listed by `ip link list` are prefixed with the index
identifier. The pattern "^$BRNAME" does not match.
- dependencies to ifconfig and ip removed
- wait until interface flagged with IFF_UP
Ref: https://github.com/torvalds/linux/blob/master/include/uapi/linux/if.h
Signed-off-by: Joshua Brunner <j.brunner@nexbyte.com>
- move action() from common to sysvinit wrapper since its only really
applicable for sysvinit and not the other init systems
- fix bug in action() fallback, need to shift away msg before executing action
- make lxc-net 98 so it starts before lxc-container (99), otherwise the lxcbr0
won't be available when containers are autostarted
- make the default RUNTIME_PATH be /var/run instead of /run. On older
distros (like ol6.5) /run doesn't exist. lxc-net will create this directory
and attempt to create the dnsmasq.pid file in it, but this will fail when
SELinux is enabled because the directory will have the default_t type.
Newer systems have /var/run symlinked to /run so you get to the same place
in that case.
- add %postun to remove lxc-dnsmasq user when pkgs are removed
- fix bug in lxc-oracle template that was creating /var/lock/subsys/lxc as
a dir and interfering with the init scripts
Signed-off-by: Dwight Engen <dwight.engen@oracle.com>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>
This commit is based on the work of:
Signed-off-by: Michael H. Warfield <mhw@WittsEnd.com>
A generic changelog would be:
- Bring support for lxcbr0 to all distributions
- Share the container startup and network configuration logic across
distributions and init systems.
- Have all the init scripts call the helper script.
- Support for the various different distro-specific configuration
locations to configure lxc-net and container startup.
Changes on top of Mike's original version:
- Remove sysconfig/lxc-net as it's apparently only there as a
workaround for an RPM limitation and is breaking Debian systems by
including a useless file which will get registered as a package provided
conffile in the dpkg database and will therefore cause conffile prompts
on upgrades...
- Go with a consistant coding style in the various init scripts.
- Split out the common logic from the sysvinit scripts and ship both in
their respective location rather than have them be copies.
- Fix the upstart jobs so they actually work (there's no such thing as
libexec on Debian systems).
Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>
