我将在我的VPS服务器上安装kubernetes。VPS服务器基于Ubuntu18.04服务器,我正在使用。
我必须在Ubuntu服务器上使用,但其中一个是用通配符标记的:
TCP Inbound 6443* Kubernetes API server All
如何使用通配符打开端口?以下内容是否正确?
sudo ufw allow 6443*
我已经在mongo路由服务器上运行了这个命令。
mongos --configdb config0/54.172.165.128:27019,54.165.48.170:27019
但产出是
2018-02-08T11:39:48.566+0000 W SHARDING [main] Running a sharded cluster with fewer than 3 config servers should only be done for testing purposes and is not recommended for production.
2018-02-08T11:
(ray==1.12.0)Followed 安装了来自 - ray up的新的Ray ray up集群指令,但给出了一个例外:
2022-04-28 08:19:46,218 ERROR services.py:1481 -- Failed to start the dashboard: Failed to start the dashboard, return code 1
The last 10 lines of /tmp/ray/session_2022-04-28_08-19-43_178339_1674/logs/dashboard.log:
File "/home/u
这是当我尝试运行sudo apt更新或尝试安装任何东西时得到的输出。
sudo apt-get update
Err:1 http://dl.google.com/linux/chrome/deb stable InRelease
Could not resolve ‘dl.google.com’
Err:2 http://gb.archive.ubuntu.com/ubuntu bionic InRelease
Could not resolve ‘gb.archive.ubuntu.com’
Err:3 http://gb.archive.ubuntu.com/ubuntu bi
在Ubuntu 14.04上使用DataStax4.8.11 Cassandra 2.1.17,一切都很好,但突然不能正常工作。cqlsh无法连接到服务器。我正在成功地启动dse和datastax-agent,它们运行得很好,包括cassandra。
@ubuntu:~$ cqlsh
Connection error: ('Unable to connect to any servers', {'192.168.254.143': error(113, "Tried connecting to [('192.168.254.143'
我在ubuntu-16.04上使用mongodb,但mongodb给出服务器连接错误:
MongoDB shell version: 3.2.9 connecting to: test
2016-09-23T12:01:10.258+0530 W NETWORK [thread1] Failed to connect to 127.0.0.1:27017, reason: errno:111 Connection refused
2016-09-23T12:01:10.286+0530 E QUERY [thread1] Error: couldn't connect to
根据这个AWS:,我有自己的VPC,它有两个子网:私有和公共。在公共子网中,我部署了一个带有指定EIP的Ubuntu16.04实例。它还有下一个安全组入站规则:
Type Protocol Port Range Source Description
SSH TCP 22 xx.xx.xx.xx/32 Home IP
相应地:
Type Protocol Port Range Source Description
SSH TCP 22 sg-xxprivatexx Se
在过去的两天里,我一直在尝试运行以下两行Python代码,但没有太多成功:
import serial
ser = serial.Serial(0)
每次运行它时,我都会得到以下错误:
Traceback (most recent call last):
File "./test.py", line 4, in <module>
ser = serial.Serial(0)
File "/usr/lib/python2.7/dist-packages/serial/serialutil.py", line 260, in __init
我正在尝试在ubuntu上安装postgresql。我遵循了中的步骤。
并在键入命令时:
psql template1
我收到以下错误:
psql: could not connect to server: No such file or directory
Is the server running locally and accepting
connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?