The io/ioutil package has been deprecated in Go 1.16. This commit
replaces the existing io/ioutil functions with their new definitions in
io and os packages.
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
Taking the same approach as was taken in containerd
The new library has a slightly different output;
- keys at the same level are sorted alphabetically
- empty sections not omitted (`proxy_plugins`, `stream_processors`, `timeouts`),
which could possibly be be addressed with an "omitempty" in containerd's struct.
- empty slices are not omitted (`imports`, `required_plugins`)
After sorting the "before" configuration the diff looks like this:
```patch
diff --git a/config-before-sorted.toml b/config-after.toml
index cc771ce7ab..43a727f589 100644
--- a/config-before-sorted.toml
+++ b/config-after.toml
@@ -1,6 +1,8 @@
disabled_plugins = ["cri"]
+imports = []
oom_score = 0
plugin_dir = ""
+required_plugins = []
root = "/var/lib/docker/containerd/daemon"
state = "/var/run/docker/containerd/daemon"
version = 0
@@ -37,6 +39,12 @@ version = 0
shim = "containerd-shim"
shim_debug = true
+[proxy_plugins]
+
+[stream_processors]
+
+[timeouts]
+
[ttrpc]
address = ""
gid = 0
```
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This patch makes two changes if --oom-score-adj is set to 0
- do not adjust the oom-score-adjust cgroup for dockerd
- do not set the hard-coded -999 score for containerd if
containerd is running as child process
Before this change:
oom-score-adj | dockerd | containerd as child-process
--------------|---------------|----------------------------
- | -500 | -500 (same as dockerd)
-100 | -100 | -100 (same as dockerd)
0 | 0 | -999 (hard-coded default)
With this change:
oom-score-adj | dockerd | containerd as child-process
--------------|---------------|----------------------------
- | -500 | -500 (same as dockerd)
-100 | -100 | -100 (same as dockerd)
0 | not adjusted | not adjusted
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
In the containerd supervisor, instead of polling the healthcheck API
every 500 milliseconds we can just wait for the process to exit.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
also renamed the non-windows variant of this file to be
consistent with other files in this package
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
`time.After` keeps a timer running until the specified duration is
completed. It also allocates a new timer on each call. This can wind up
leaving lots of uneccessary timers running in the background that are
not needed and consume resources.
Instead of `time.After`, use `time.NewTimer` so the timer can actually
be stopped.
In some of these cases it's not a big deal since the duraiton is really
short, but in others it is much worse.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
Adds a supervisor package for starting and monitoring containerd.
Separates grpc connection allowing access from daemon.
Signed-off-by: Derek McGowan <derek@mcgstyle.net>
