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|
#!/usr/bin/python
# Copyright (c) 2020 Red Hat
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
from __future__ import absolute_import, division, print_function
__metaclass__ = type
DOCUMENTATION = r'''
module: podman_container_info
author:
- Sagi Shnaidman (@sshnaidm)
- Emilien Macchi (@EmilienM)
short_description: Gather facts about containers using podman
notes:
- Podman may require elevated privileges in order to run properly.
description:
- Gather facts about containers using C(podman)
requirements:
- "Podman installed on host"
options:
name:
description:
- List of container names to gather facts about. If no name is given
return facts about all containers.
type: list
elements: str
executable:
description:
- Path to C(podman) executable if it is not in the C($PATH) on the
machine running C(podman)
default: 'podman'
type: str
'''
EXAMPLES = r"""
- name: Gather facts for all containers
containers.podman.podman_container_info:
- name: Gather facts on a specific container
containers.podman.podman_container_info:
name: web1
- name: Gather facts on several containers
containers.podman.podman_container_info:
name:
- redis
- web1
"""
RETURN = r"""
containers:
description: Facts from all or specified containers
returned: always
type: list
elements: dict
sample: [
{
"Id": "c5c39f9b80a6ea2ad665aa9946435934e478a0c5322da835f3883872f",
"Created": "2019-10-01T12:51:00.233106443Z",
"Path": "dumb-init",
"Args": [
"--single-child",
"--",
"kolla_start"
],
"State": {
"OciVersion": "1.0.1-dev",
"Status": "configured",
"Running": false,
"Paused": false,
"Restarting": false,
"OOMKilled": false,
"Dead": false,
"Pid": 0,
"ExitCode": 0,
"Error": "",
"StartedAt": "0001-01-01T00:00:00Z",
"FinishedAt": "0001-01-01T00:00:00Z",
"Healthcheck": {
"Status": "",
"FailingStreak": 0,
"Log": null
}
},
"Image": "0e267acda67d0ebd643e900d820a91b961d859743039e620191ca1",
"ImageName": "docker.io/tripleomaster/centos-haproxy:latest",
"Rootfs": "",
"Pod": "",
"ResolvConfPath": "",
"HostnamePath": "",
"HostsPath": "",
"OCIRuntime": "runc",
"Name": "haproxy",
"RestartCount": 0,
"Driver": "overlay",
"MountLabel": "system_u:object_r:svirt_sandbox_file_t:s0:c78,c866",
"ProcessLabel": "system_u:system_r:svirt_lxc_net_t:s0:c785,c866",
"AppArmorProfile": "",
"EffectiveCaps": [
"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"
],
"BoundingCaps": [
"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"
],
"ExecIDs": [],
"GraphDriver": {
"Name": "overlay"
},
"Mounts": [],
"Dependencies": [],
"NetworkSettings": {
"Bridge": "",
"SandboxID": "",
"HairpinMode": false,
"LinkLocalIPv6Address": "",
"LinkLocalIPv6PrefixLen": 0,
"Ports": [],
"SandboxKey": "",
"SecondaryIPAddresses": null,
"SecondaryIPv6Addresses": null,
"EndpointID": "",
"Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"IPAddress": "",
"IPPrefixLen": 0,
"IPv6Gateway": "",
"MacAddress": ""
},
"ExitCommand": [
"/usr/bin/podman",
"--root",
"/var/lib/containers/storage",
"--runroot",
"/var/run/containers/storage",
"--log-level",
"error",
"--cgroup-manager",
"systemd",
"--tmpdir",
"/var/run/libpod",
"--runtime",
"runc",
"--storage-driver",
"overlay",
"--events-backend",
"journald",
"container",
"cleanup",
"c9e813703f9b80a6ea2ad665aa9946435934e478a0c5322da835f3883872f"
],
"Namespace": "",
"IsInfra": false,
"Config": {
"Hostname": "c5c39e813703",
"Domainname": "",
"User": "",
"AttachStdin": false,
"AttachStdout": false,
"AttachStderr": false,
"Tty": false,
"OpenStdin": false,
"StdinOnce": false,
"Env": [
"PATH=/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
"TERM=xterm",
"HOSTNAME=",
"container=oci",
"KOLLA_INSTALL_METATYPE=rdo",
"KOLLA_BASE_DISTRO=centos",
"KOLLA_INSTALL_TYPE=binary",
"KOLLA_DISTRO_PYTHON_VERSION=2.7",
"KOLLA_BASE_ARCH=x86_64"
],
"Cmd": [
"kolla_start"
],
"Image": "docker.io/tripleomaster/centos-haproxy:latest",
"Volumes": null,
"WorkingDir": "/",
"Entrypoint": "dumb-init --single-child --",
"OnBuild": null,
"Labels": {
"build-date": "20190919",
"kolla_version": "8.1.0",
"name": "haproxy",
"org.label-schema.build-date": "20190801",
"org.label-schema.license": "GPLv2",
"org.label-schema.name": "CentOS Base Image",
"org.label-schema.schema-version": "1.0",
"org.label-schema.vendor": "CentOS"
},
"Annotations": {
"io.kubernetes.cri-o.ContainerType": "sandbox",
"io.kubernetes.cri-o.TTY": "false",
"io.podman.annotations.autoremove": "FALSE",
"io.podman.annotations.init": "FALSE",
"io.podman.annotations.privileged": "FALSE",
"io.podman.annotations.publish-all": "FALSE"
},
"StopSignal": 15
},
"HostConfig": {
"Binds": [],
"ContainerIDFile": "",
"LogConfig": {
"Type": "k8s-file",
"Config": null
},
"NetworkMode": "default",
"PortBindings": {},
"RestartPolicy": {
"Name": "",
"MaximumRetryCount": 0
},
"AutoRemove": false,
"VolumeDriver": "",
"VolumesFrom": null,
"CapAdd": [],
"CapDrop": [],
"Dns": [],
"DnsOptions": [],
"DnsSearch": [],
"ExtraHosts": [],
"GroupAdd": [],
"IpcMode": "",
"Cgroup": "",
"Links": null,
"OomScoreAdj": 0,
"PidMode": "",
"Privileged": false,
"PublishAllPorts": false,
"ReadonlyRootfs": false,
"SecurityOpt": [],
"Tmpfs": {},
"UTSMode": "",
"UsernsMode": "",
"ShmSize": 65536000,
"Runtime": "oci",
"ConsoleSize": [
0,
0
],
"Isolation": "",
"CpuShares": 0,
"Memory": 0,
"NanoCpus": 0,
"CgroupParent": "",
"BlkioWeight": 0,
"BlkioWeightDevice": null,
"BlkioDeviceReadBps": null,
"BlkioDeviceWriteBps": null,
"BlkioDeviceReadIOps": null,
"BlkioDeviceWriteIOps": null,
"CpuPeriod": 0,
"CpuQuota": 0,
"CpuRealtimePeriod": 0,
"CpuRealtimeRuntime": 0,
"CpusetCpus": "",
"CpusetMems": "",
"Devices": [],
"DiskQuota": 0,
"KernelMemory": 0,
"MemoryReservation": 0,
"MemorySwap": 0,
"MemorySwappiness": -1,
"OomKillDisable": false,
"PidsLimit": 0,
"Ulimits": [
{
"Name": "RLIMIT_NOFILE",
"Soft": 1048576,
"Hard": 1048576
},
{
"Name": "RLIMIT_NPROC",
"Soft": 1048576,
"Hard": 1048576
}
],
"CpuCount": 0,
"CpuPercent": 0,
"IOMaximumIOps": 0,
"IOMaximumBandwidth": 0
}
}
]
"""
import json
import time
from ansible.module_utils.basic import AnsibleModule
def get_containers_facts(module, executable, name):
"""Collect containers facts for all containers or for specified in 'name'.
Arguments:
module {AnsibleModule} -- instance of AnsibleModule
executable {string} -- binary to execute when inspecting containers
name {list} -- list of names or None in case of all containers
Returns:
list of containers info, stdout, stderr
"""
retry = 0
retry_limit = 4
if not name:
all_names = [executable, 'container', 'ls', '-q', '-a']
rc, out, err = module.run_command(all_names)
# This should not fail in regular circumstances, so retry again
# https://github.com/containers/podman/issues/10225
while rc != 0 and retry <= retry_limit:
module.log(msg="Unable to get list of containers: %s" % err)
time.sleep(1)
retry += 1
rc, out, err = module.run_command(all_names)
if rc != 0:
module.fail_json(msg="Unable to get list of containers during"
" %s retries" % retry_limit)
name = out.split()
if not name:
return [], out, err
command = [executable, 'container', 'inspect']
command.extend(name)
rc, out, err = module.run_command(command)
if rc == 0:
json_out = json.loads(out) if out else None
if json_out is None:
return [], out, err
return json_out, out, err
if rc != 0 and 'no such ' in err:
if len(name) < 2:
return [], out, err
return cycle_over(module, executable, name)
module.fail_json(msg="Unable to gather info for %s: %s" % (",".join(name), err))
def cycle_over(module, executable, name):
"""Inspect each container in a cycle in case some of them don't exist.
Arguments:
module {AnsibleModule} -- instance of AnsibleModule
executable {string} -- binary to execute when inspecting containers
name {list} -- list of containers names to inspect
Returns:
list of containers info, stdout as empty, stderr
"""
inspection = []
stderrs = []
for container in name:
command = [executable, 'container', 'inspect', container]
rc, out, err = module.run_command(command)
if rc != 0 and 'no such ' not in err:
module.fail_json(msg="Unable to gather info for %s: %s" % (container, err))
if rc == 0 and out:
json_out = json.loads(out)
if json_out:
inspection += json_out
stderrs.append(err)
return inspection, "", "\n".join(stderrs)
def main():
module = AnsibleModule(
argument_spec={
'executable': {'type': 'str', 'default': 'podman'},
'name': {'type': 'list', 'elements': 'str'},
},
supports_check_mode=True,
)
name = module.params['name']
executable = module.get_bin_path(module.params['executable'], required=True)
# pylint: disable=unused-variable
inspect_results, out, err = get_containers_facts(module, executable, name)
results = {
"changed": False,
"containers": inspect_results,
"stderr": err
}
module.exit_json(**results)
if __name__ == '__main__':
main()
|
