db_api 路径

/usr/lib/python2.7/site-packages/ #调用 cinder/db/api.py #实现层 cinder/db/sqlalchemy/api.py

实现功能 根据 service.host 从数据库中删除数据

| Binary | Host | Zone | Status | State | Updated_at | Disabled Reason | | cinder-volume | node01@backend-2813902f-2c94 | zettakit | enabled | up | 2021-01-| - |

cinder数据库配置

[database] connection = mysql+pymysql://cinder:cinder_dbpass@192.168.41.10/cinder max_retries = -1 retry_interval = 1 use_db_reconnect = true db_max_retry_interval = 1 db_max_retries = -1

实现思路

1. 学习 sqlalchemy 操作 完成 cinder/db/sqlalchemy/api.py 中 delete service 函数

根据 host 删除 service

2. 测试 函数。
3. 加入项目代码。

service-list 调用过程

../cinderclient/cinderclient/v2/shell.py: columns = ["Binary", "Host", "Zone", "Status", "State", "Updated_at"]

do_service_list 实现

@utils.arg('--host', metavar='<hostname>', default=None,
           help='Host name. Default=None.')
@utils.arg('--binary', metavar='<binary>', default=None,
           help='Service binary. Default=None.')
@utils.arg('--withreplication',
           metavar='<True|False>',
           const=True,
           nargs='?',
           default=False,
           help='Enables or disables display of '
                'Replication info for c-vol services. Default=False.')
@utils.service_type('volumev2')
def do_service_list(cs, args):
    """Lists all services. Filter by host and service binary."""
    replication = strutils.bool_from_string(args.withreplication)
    result = cs.services.list(host=args.host, binary=args.binary)
    columns = ["Binary", "Host", "Zone", "Status", "State", "Updated_at"]
    if replication:
        columns.extend(["Replication Status", "Active Backend ID", "Frozen"])
    # NOTE(jay-lau-513): we check if the response has disabled_reason
    # so as not to add the column when the extended ext is not enabled.
    if result and hasattr(result[0], 'disabled_reason'):
        columns.append("Disabled Reason")
    utils.print_list(result, columns)

每一个 service 的属性

['HUMAN_ID', 'NAME_ATTR', '__class__', '__delattr__', '__dict__', '__doc__', '__eq__', '__format__', '__getattr__', '__getattribute__', '__hash__', '__init__', '__module__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', '_add_details', '_append_request_id', '_info', '_loaded', 'append_request_ids', 'binary', 'disabled_reason', 'get', 'host', 'human_id', 'is_loaded', 'manager', 'request_ids', 'set_loaded', 'setup', 'state', 'status', 'to_dict', 'updated_at', 'x_openstack_request_ids', 'zone']

服务端代码 位置

../cinder/cinder/api/contrib/services.py:        resource = extensions.ResourceExtension('os-services', controller)

测试 修改结果

[root@node02 ~]# cinder backends-list resp : body : +--------------------------------------+-----------------+-----------+---------+-----------------+-------------+ | ID | Name | Is_Public | Is_bind | Stor_pool | Description | +--------------------------------------+-----------------+-----------+---------+-----------------+-------------+ | 2813902f-2c94-4ff9-988a-2b475e0bd5a5 | performance | True | True | nvme | - | | deffaf27-95b1-41ca-862f-43075258a8e5 | web_backends222 | True | False | web_create_pool | - | | ffdc2630-def2-4301-a21a-564792610430 | web_backends | True | False | web_create_pool | - | +--------------------------------------+-----------------+-----------+---------+-----------------+-------------+

[root@node02 ~]# cinder service-list resp : body : +------------------+------------------------------+----------+---------+-------+----------------------------+-----------------+ | Binary | Host | Zone | Status | State | Updated_at | Disabled Reason | +------------------+------------------------------+----------+---------+-------+----------------------------+-----------------+ | cinder-backup | node01 | zettakit | enabled | up | 2021-01-12T09:28:10.000000 | - | | cinder-backup | node02 | zettakit | enabled | up | 2021-01-12T09:28:11.000000 | - | | cinder-scheduler | node01 | zettakit | enabled | up | 2021-01-12T09:28:18.000000 | - | | cinder-scheduler | node02 | zettakit | enabled | up | 2021-01-12T09:28:14.000000 | - | | cinder-volume | node01@backend-2813902f-2c94 | zettakit | enabled | up | 2021-01-12T09:28:13.000000 | - | | cinder-volume | node01@backend-deffaf27-95b1 | zettakit | enabled | up | 2021-01-12T09:28:13.000000 | - | | cinder-volume | node01@backend-ffdc2630-def2 | zettakit | enabled | up | 2021-01-12T09:28:13.000000 | - | | cinder-volume | node01@normal | zettakit | enabled | up | 2021-01-12T09:28:12.000000 | - | | cinder-volume | node02@backend-2813902f-2c94 | zettakit | enabled | up | 2021-01-12T09:28:14.000000 | - | | cinder-volume | node02@backend-deffaf27-95b1 | zettakit | enabled | up | 2021-01-12T09:28:13.000000 | - | | cinder-volume | node02@backend-ffdc2630-def2 | zettakit | enabled | up | 2021-01-12T09:28:14.000000 | - | | cinder-volume | node02@normal | zettakit | enabled | up | 2021-01-12T09:28:12.000000 | - | +------------------+------------------------------+----------+---------+-------+----------------------------+-----------------+

cinder backends-create web_backends web_create_pool

cinder type-key volume_type set 'volume_backend_name'='web_backends' 'backend_name'='web_backends'

cinder type-key volume_type unset 'volume_backend_name' 'backend_name'

cinder backends-delete c3a3e629-4c8d-46c1-9fc8-09364aedabff

grep -E "$today.*ERROR" -r /var/log/cinder

today=date "+%Y-%m-%d" grep -E "$today 18.*ERROR" -r /var/log/cinder

grep "Kill cinder volume service not found" -r /var/log/cinder

ps -axf |grep "ffdc2630-def2"

ps -aux | grep "80522317-0ba1" |grep -v grep|awk '{print $2}'

根据进程关键字 查杀 进程

c3a3e629-4c8d psinfo="80522317-0ba1" for PID in ps -aux | grep "$psinfo" |grep -v grep|awk '{print $2}' do echo "kill $PID success" kill$PID done

psinfo="80522317-0ba1" for PID in ps -aux | grep "$psinfo" |grep -v grep|awk '{print $2}'; do echo "kill $PID success"; kill$PID; done