Python 与cassandra和docker py的连接被拒绝错误
因此,基本上我正在尝试运行一个cassandra docker实例(2.1),并按照中的说明运行cqlsh命令 或 手动操作一切正常,但在尝试使用docker py自动化此流程时,我遇到了运行cqlsh shell的问题。 我无法从链接容器中对正在运行的cassandra docker容器执行cqlsh shell和运行命令。下面,我提供了代码和我为使cqlsh shell工作而尝试的各种命令组合得到的响应。如有任何提示/建议/答案,我们将不胜感激 这是我正在使用的代码Python 与cassandra和docker py的连接被拒绝错误,python,python-2.7,cassandra,docker,dockerpy,Python,Python 2.7,Cassandra,Docker,Dockerpy,因此,基本上我正在尝试运行一个cassandra docker实例(2.1),并按照中的说明运行cqlsh命令 或 手动操作一切正常,但在尝试使用docker py自动化此流程时,我遇到了运行cqlsh shell的问题。 我无法从链接容器中对正在运行的cassandra docker容器执行cqlsh shell和运行命令。下面,我提供了代码和我为使cqlsh shell工作而尝试的各种命令组合得到的响应。如有任何提示/建议/答案,我们将不胜感激 这是我正在使用的代码 import docke
import docker
host_config = client.create_host_config(port_bindings={
9042: 9042,
7199: 7199,
7001: 7001
}
)
ctr = client.create_container('cassandra:2.1', name='some-cassandra',
ports=[9042, 7199, 7001],
host_config=host_config
)
# start cassandra container
ctr_id = ctr['Id']
link_path = 'some-cassandra'
link_alias1 = 'cassandra'
link_ctr = client.create_container(
'cassandra:2.1',
command=['/bin/sh'],
host_config=client.create_host_config(
links={link_path: link_alias1},
),
stdin_open=True,
detach=True,
tty=True
)
r=client.start(ctr)
# start another linked container
r=client.start(link_ctr["Id"])
# Try to invoke cqlsh shell to run some commands
for x in [["cat /etc/hosts"], ['cqlsh',"cassandra"], ['cqlsh', '$CASSANDRA_PORT_9042_TCP_ADDR'], ['cqlsh','172.17.0.4', '9042'], ['cqlsh','172.17.0.4', '9160'], ['cqlsh','172.17.0.4', '7199']]:
res = client.exec_create(link_ctr["Id"], cmd=x)
exec_log = client.exec_start(res)
print exec_log
client.stop(link_ctr["Id"])
client.stop(ctr)
client.remove_container(ctr)
client.remove_container(link_ctr)
这是我得到的结果
cat/etc/hosts/
['cqlsh',“cassandra”]
['cqlsh','$CASSANDRA_PORT_9042_TCP_ADDR']
[cqlsh'、'172.17.0.4'、'9042']
[cqlsh'、'172.17.0.4'、'9160']
[cqlsh'、'172.17.0.4'、'7199']
我使用cassandra drover for python解决了这个问题 原始google组线程 python的Cassandra驱动程序
$ docker run -it --link some-cassandra:cassandra --rm cassandra cqlsh cassandra
import docker
host_config = client.create_host_config(port_bindings={
9042: 9042,
7199: 7199,
7001: 7001
}
)
ctr = client.create_container('cassandra:2.1', name='some-cassandra',
ports=[9042, 7199, 7001],
host_config=host_config
)
# start cassandra container
ctr_id = ctr['Id']
link_path = 'some-cassandra'
link_alias1 = 'cassandra'
link_ctr = client.create_container(
'cassandra:2.1',
command=['/bin/sh'],
host_config=client.create_host_config(
links={link_path: link_alias1},
),
stdin_open=True,
detach=True,
tty=True
)
r=client.start(ctr)
# start another linked container
r=client.start(link_ctr["Id"])
# Try to invoke cqlsh shell to run some commands
for x in [["cat /etc/hosts"], ['cqlsh',"cassandra"], ['cqlsh', '$CASSANDRA_PORT_9042_TCP_ADDR'], ['cqlsh','172.17.0.4', '9042'], ['cqlsh','172.17.0.4', '9160'], ['cqlsh','172.17.0.4', '7199']]:
res = client.exec_create(link_ctr["Id"], cmd=x)
exec_log = client.exec_start(res)
print exec_log
client.stop(link_ctr["Id"])
client.stop(ctr)
client.remove_container(ctr)
client.remove_container(link_ctr)
172.17.0.5 5da36a67e228
127.0.0.1 localhost
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
172.17.0.4 cassandra 000c295fb3c7 some-cassandra
Connection error: ('Unable to connect to any servers', {'cassandra': error(111, "Tried connecting to [('172.17.0.4', 9042)]. Last error: Connection refused")})
Connection error: ('Unable to connect to any servers', {'$CASSANDRA_PORT_9042_TCP_ADDR': gaierror(-2, 'Name or service not known')})
Connection error: ('Unable to connect to any servers', {'172.17.0.4': error(111, "Tried connecting to [('172.17.0.4', 9042)]. Last error: Connection refused")})
Connection error: ('Unable to connect to any servers', {'172.17.0.4': error(111, "Tried connecting to [('172.17.0.4', 9160)]. Last error: Connection refused")})
Connection error: ('Unable to connect to any servers', {'172.17.0.4': error(111, "Tried connecting to [('172.17.0.4', 7199)]. Last error: Connection refused")})