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[containerd] Allow configuring base_runtime_spec per containerd runtime (#9302)

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and supply a default runtime spec.
This commit is contained in:
Ilya Margolin
2022-09-23 19:38:27 +02:00
committed by GitHub
parent 9468642269
commit 726711513f
5 changed files with 292 additions and 0 deletions
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4
roles/container-engine/containerd/defaults/main.yml
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@@ -12,6 +12,7 @@ containerd_runc_runtime:
type: "io.containerd.runc.v2"
engine: ""
root: ""
# base_runtime_spec: cri-base.json # use this to limit number of file descriptors per container
options:
systemdCgroup: "{{ containerd_use_systemd_cgroup | ternary('true', 'false') }}"
@@ -22,6 +23,9 @@ containerd_additional_runtimes: []
# engine: ""
# root: ""
containerd_base_runtime_specs:
cri-base.json: "{{ lookup('file', 'cri-base.json') }}"
containerd_grpc_max_recv_message_size: 16777216
containerd_grpc_max_send_message_size: 16777216

214
roles/container-engine/containerd/files/cri-base.json Normal file
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@@ -0,0 +1,214 @@
{
"ociVersion": "1.0.2-dev",
"process": {
"user": {
"uid": 0,
"gid": 0
},
"cwd": "/",
"capabilities": {
"bounding": [
"CAP_CHOWN",
"CAP_DAC_OVERRIDE",
"CAP_FSETID",
"CAP_FOWNER",
"CAP_MKNOD",
"CAP_NET_RAW",
"CAP_SETGID",
"CAP_SETUID",
"CAP_SETFCAP",
"CAP_SETPCAP",
"CAP_NET_BIND_SERVICE",
"CAP_SYS_CHROOT",
"CAP_KILL",
"CAP_AUDIT_WRITE"
],
"effective": [
"CAP_CHOWN",
"CAP_DAC_OVERRIDE",
"CAP_FSETID",
"CAP_FOWNER",
"CAP_MKNOD",
"CAP_NET_RAW",
"CAP_SETGID",
"CAP_SETUID",
"CAP_SETFCAP",
"CAP_SETPCAP",
"CAP_NET_BIND_SERVICE",
"CAP_SYS_CHROOT",
"CAP_KILL",
"CAP_AUDIT_WRITE"
],
"inheritable": [
"CAP_CHOWN",
"CAP_DAC_OVERRIDE",
"CAP_FSETID",
"CAP_FOWNER",
"CAP_MKNOD",
"CAP_NET_RAW",
"CAP_SETGID",
"CAP_SETUID",
"CAP_SETFCAP",
"CAP_SETPCAP",
"CAP_NET_BIND_SERVICE",
"CAP_SYS_CHROOT",
"CAP_KILL",
"CAP_AUDIT_WRITE"
],
"permitted": [
"CAP_CHOWN",
"CAP_DAC_OVERRIDE",
"CAP_FSETID",
"CAP_FOWNER",
"CAP_MKNOD",
"CAP_NET_RAW",
"CAP_SETGID",
"CAP_SETUID",
"CAP_SETFCAP",
"CAP_SETPCAP",
"CAP_NET_BIND_SERVICE",
"CAP_SYS_CHROOT",
"CAP_KILL",
"CAP_AUDIT_WRITE"
]
},
"rlimits": [
{
"type": "RLIMIT_NOFILE",
"hard": 1024,
"soft": 1024
}
],
"noNewPrivileges": true
},
"root": {
"path": "rootfs"
},
"mounts": [
{
"destination": "/proc",
"type": "proc",
"source": "proc",
"options": [
"nosuid",
"noexec",
"nodev"
]
},
{
"destination": "/dev",
"type": "tmpfs",
"source": "tmpfs",
"options": [
"nosuid",
"strictatime",
"mode=755",
"size=65536k"
]
},
{
"destination": "/dev/pts",
"type": "devpts",
"source": "devpts",
"options": [
"nosuid",
"noexec",
"newinstance",
"ptmxmode=0666",
"mode=0620",
"gid=5"
]
},
{
"destination": "/dev/shm",
"type": "tmpfs",
"source": "shm",
"options": [
"nosuid",
"noexec",
"nodev",
"mode=1777",
"size=65536k"
]
},
{
"destination": "/dev/mqueue",
"type": "mqueue",
"source": "mqueue",
"options": [
"nosuid",
"noexec",
"nodev"
]
},
{
"destination": "/sys",
"type": "sysfs",
"source": "sysfs",
"options": [
"nosuid",
"noexec",
"nodev",
"ro"
]
},
{
"destination": "/run",
"type": "tmpfs",
"source": "tmpfs",
"options": [
"nosuid",
"strictatime",
"mode=755",
"size=65536k"
]
}
],
"linux": {
"resources": {
"devices": [
{
"allow": false,
"access": "rwm"
}
]
},
"cgroupsPath": "/default",
"namespaces": [
{
"type": "pid"
},
{
"type": "ipc"
},
{
"type": "uts"
},
{
"type": "mount"
},
{
"type": "network"
}
],
"maskedPaths": [
"/proc/acpi",
"/proc/asound",
"/proc/kcore",
"/proc/keys",
"/proc/latency_stats",
"/proc/timer_list",
"/proc/timer_stats",
"/proc/sched_debug",
"/sys/firmware",
"/proc/scsi"
],
"readonlyPaths": [
"/proc/bus",
"/proc/fs",
"/proc/irq",
"/proc/sys",
"/proc/sysrq-trigger"
]
}
}

9
roles/container-engine/containerd/tasks/main.yml
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@@ -84,6 +84,15 @@
notify: restart containerd
when: http_proxy is defined or https_proxy is defined
- name: containerd | Write base_runtime_specs
copy:
content: "{{ item.value }}"
dest: "{{ containerd_cfg_dir }}/{{ item.key }}"
owner: "root"
mode: 0644
with_dict: "{{ containerd_base_runtime_specs | default({}) }}"
notify: restart containerd
- name: containerd | Copy containerd config file
template:
src: config.toml.j2

4
roles/container-engine/containerd/templates/config.toml.j2
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@@ -27,6 +27,10 @@ oom_score = {{ containerd_oom_score }}
runtime_type = "{{ runtime.type }}"
runtime_engine = "{{ runtime.engine }}"
runtime_root = "{{ runtime.root }}"
{% if runtime.base_runtime_spec is defined %}
base_runtime_spec = "{{ containerd_cfg_dir }}/{{ runtime.base_runtime_spec }}"
{% endif %}
[plugins."io.containerd.grpc.v1.cri".containerd.runtimes.{{ runtime.name }}.options]
{% for key, value in runtime.options.items() %}
{{ key }} = {{ value }}