When logging directly to files (the not-using-memlogd case) the onboot
services must log to /run/log because /var/log might be overmounted
by a persistent disk. Therefore we create a symlink at the end of
the onboot section.
When logging via memlogd, all logs are buffered until a logwrite service
starts, so no symlink is needed.
Signed-off-by: David Scott <dave.scott@docker.com>
If external logging is enabled, this patch sets the stdout and stderr
of the `runc` invocations to one end of a socketpair and the other end is
sent to the logging service. Otherwise we log to files as before.
Signed-off-by: David Scott <dave.scott@docker.com>
Since we are building containerd v1.1.0 with go 1.10 (as it requires) to the
same for init and runc too for consistency. In the case of init it is actually
required since we use the containerd client library there.
The subreaper interfaces have been removed from containerd and replaced with a
similar interface in runc/libcontainer, update init to use that now.
Signed-off-by: Ian Campbell <ijc@docker.com>
This adds support for a runtime configuration file that can do:
- `mkdir` to make a directory at runtime, eg in `/var` or `/tmp`, to avoid workarounds
- `interface` that can create network interfaces in a container or move them
- `bindNS` that can bind mount namespaces of an `onboot` container to a file so a service can be started in that namespace.
It merges the `service` and `onboot` tools (in `init`) to avoid duplication. This also saves some size for
eg LCOW which did not use the `onboot` code in `runc`.
Signed-off-by: Justin Cormack <justin.cormack@docker.com>
