prometheus/cadvisor
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Improve approximation of container creation time.

Browse Source 
Containers with subcontainers always report creation time to be same as the time
of creation of the latest subcontainer.

Still not an ideal solution, but accurate for most practical purposes.
This commit is contained in:
Rohit Jnagal 2015-05-07 18:14:54 +00:00
parent 06c9dcd3bb
commit 4b4312b290
1 changed files with 5 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
container/raw/handler.go
View File

@ -177,7 +177,11 @@ func (self *rawContainerHandler) GetSpec() (info.ContainerSpec, error) {
now := time.Now()
lowestTime := now
for _, cgroupPath := range self.cgroupPaths {
// The modified time of the cgroup directory is when the container was created.
// The modified time of the cgroup directory changes whenever a subcontainer is created.
// eg. /docker will have creation time matching the creation of latest docker container.
// Use clone_children as a workaround as it isn't usually modified. It is only likely changed
// immediately after creating a container.
cgroupPath = path.Join(cgroupPath, "cgroup.clone_children")
fi, err := os.Stat(cgroupPath)
if err == nil && fi.ModTime().Before(lowestTime) {
lowestTime = fi.ModTime()