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A few days ago, my Aliyun server was violently cracked, very uncomfortable, so I made this key certificate password-free login. First check whether sshd is installed in Aliyun's ECS server Get the secret key: If you don't see the previous git upload github's article. Type: [root@iz2ze8w7169ei61c5c1il5z ~]# vi /etc/ssh/sshd_config Mod ...

Configuration of Dashboard dashboard service (Controller Node)1. Configure Dashboard# apt -y install openstack-dashboard # vim /etc/openstack-dashboard/local_settings.py     OPENSTACK_HOST = "192.168.30.145"             & ...

This paper derives from:Everyday Learning IT - Knowledge Base Cluster machine Host IP address 192.168.99.181 ambari-mirror 192.168.99.101 ambari-server 192.168.99.106 ambari-agent1 192.168.99.107 ambari-agent2 Create management user hadoop (all node operations) useradd hadoop Modify the machine hosts file (all node operations) ec ...

Written in front When you use multiple git accounts locally, or when multiple people deploy multiple git accounts with one machine, there are often conflicts. Today, you have encountered one. Problem description Many of us use a machine together. When we reconfigured yesterday, we accidentally set my username and mailbox to the global configura ...

When the new Linux host completes the network configuration, that is, it can access the network normally, we can carry out network correlation detection through the relevant tools of Linux. For example, the most commonly used ping, netstat, ss, traceroute, ethtool and other related commands. This paper mainly describes the use of these command ...

Explanation: Almost many bloggers will encounter the situation of being attacked by CC and exploded by SSH. At this time, we need to take defensive measures. A few days ago, we sent a script to prevent CC. https://www.moerats.com/archives/484/ However, for CentOS 7, because of the firewall factors, it is still a bit troublesome ...

We often encounter the problem of using telnet/ssh to log on to a remote Linux server and run some long-time tasks, but the task fails due to the instability of the network. How can commands be submitted without interference from local closure of terminal windows/network disconnection? Here are some examples where you can choose different ways ...

Reprinted from: http://www.taskctl.com/forum/detail_129.html The last time I wrote a post TASKCTL, I did not use proxy to execute remote script configuration (SSH plug-in extension) through SSH secret-free connection. http://www.taskctl.com/forum/detail_122.html  . After writing, it is found that it is possible to modify the original ...