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agent: Fix container launching failure with systemd cgroup

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FSManager of systemd cgroup manager is responsible for setting up cgroup
path. The container launching will be failed if the FSManager is in
read-only mode.

Signed-off-by: Xuewei Niu <niuxuewei.nxw@antgroup.com>
This commit is contained in:
Xuewei Niu 2023-10-13 17:20:41 +08:00
parent 6477825195
commit b5f3a8cb39
2 changed files with 6 additions and 8 deletions
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12
src/agent/rustjail/src/cgroups/fs/mod.rs
View File

@ -1104,15 +1104,13 @@ impl Manager {
})
}
/// Create a cgroupfs manager without creating any cgroups.
/// A typical case is for systemd cgroup: Systemd manager retains a
/// cgroupfs manager to read cgroup information only. Writing cgroup
/// rules is done by the systemd. That is, the cgroupfs manager runs in
/// read-only mode.
pub fn new_read_only(cpath: &str) -> Result<Self> {
/// Create a cgroupfs manager for systemd cgroup.
/// The device cgroup is disabled in systemd cgroup, given that it is
/// implemented by eBPF.
pub fn new_systemd(cpath: &str) -> Result<Self> {
let (paths, mounts) = Self::get_paths_and_mounts(cpath).context("Get paths and mounts")?;
let cg = load_cgroup(cgroups::hierarchies::auto(), cpath);
let cg = new_cgroup(cgroups::hierarchies::auto(), cpath)?;
Ok(Self {
paths,

2
src/agent/rustjail/src/cgroups/systemd/manager.rs
View File

@ -113,7 +113,7 @@ impl Manager {
let (parent_slice, unit_name) = cgroups_path.parse()?;
let cpath = parent_slice + "/" + &unit_name;
let fs_manager = FsManager::new_read_only(cpath.as_str())?;
let fs_manager = FsManager::new_systemd(cpath.as_str())?;
Ok(Manager {
paths: fs_manager.paths.clone(),