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Merge pull request #51986 from yujuhong/docker-pids

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Automatic merge from submit-queue (batch tested with PRs 51921, 51829, 51968, 51988, 51986)

COS/GCE: bump the max pids for the docker service

**What this PR does / why we need it**:
TasksMax limits how many threads/processes docker can create. Insufficient limit affects container starts.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*:
fixes #51977

**Special notes for your reviewer**:

**Release note**:
```release-note
Ensure TasksMax is sufficient for docker
```
This commit is contained in:
Kubernetes Submit Queue 2017-09-05 21:03:17 -07:00 committed by GitHub
commit fa916c1002
1 changed files with 11 additions and 5 deletions
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16
cluster/gce/gci/configure-helper.sh
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@ -811,20 +811,26 @@ function assemble-docker-flags {
# If using a network plugin, extend the docker configuration to always remove
# the network checkpoint to avoid corrupt checkpoints.
# (https://github.com/docker/docker/issues/18283).
echo "Extend the default docker.service configuration"
echo "Extend the docker.service configuration to remove the network checkpiont"
mkdir -p /etc/systemd/system/docker.service.d
cat <<EOF >/etc/systemd/system/docker.service.d/01network.conf
[Service]
ExecStartPre=/bin/sh -x -c "rm -rf /var/lib/docker/network"
EOF
fi
# Ensure TasksMax is sufficient for docker.
# (https://github.com/kubernetes/kubernetes/issues/51977)
echo "Extend the docker.service configuration to set a higher pids limit"
mkdir -p /etc/systemd/system/docker.service.d
cat <<EOF >/etc/systemd/system/docker.service.d/02tasksmax.conf
[Service]
TasksMax=infinity
EOF
systemctl daemon-reload
# If using a network plugin, we need to explicitly restart docker daemon, because
# kubelet will not do it.
echo "Docker command line is updated. Restart docker to pick it up"
systemctl restart docker
fi
}
# This function assembles the kubelet systemd service file and starts it