19c gipcd start faild Permission denied (13)

Database version: 19.6Operating system: aix 7100-00-02-1041 (this version is lower than the official recommendation, at least 7105) After the patch is completed, the manual reboot test of the two nodes is normal. Due to the abnormal heartbeat, one node is rebooted, and the node cannot join the cluster. Check that the log card is at the locatio ...

Posted on Fri, 24 Apr 2020 08:04:43 -0700 by kneifelspy

Personal notes on Linux operation and maintenance: special permission

1, Special permission SUID We have learned the three common permissions of r (read), w (write) and x (execute), but when we query the system file permissions, we find that some other permission letters appear, such as: ll /usr/bin/passwd -rwsr-xr-x. 1 root root 27832 Jun 10 2014 /usr/bin/passwd ...

Posted on Tue, 17 Mar 2020 03:21:01 -0700 by ceanth

Event handling of servicemanager

stay Start process of servicemanager In, you can see that servicemanager will enter the binder_loop() to start processing events after all preparations are ready. This note focuses on how to handle these core events. Command resolution: bind_parse() First of all, the command should be parsed and diffe ...

Posted on Sun, 16 Feb 2020 03:26:51 -0800 by m5638829

openpyxl module encapsulation in Python, read and write automated test cases in Excel files

Often when we are summarizing automated tests, we place data in Excel files, CSV files, databases There are many modules in Python that handle excel data, such as xlxd (read-only), xlwd (write-only), openpyxl (read-write) We will use data-driven thinking, using load_workbook in openpyxl to process the data of existing Excel files, only read and ...

Posted on Mon, 06 Jan 2020 01:09:25 -0800 by dylan001

"Input and Output from Product Linux"

Input and Output in Linux inputstdin [Standard Input Stream]Input refers to the information that the system external transmits to the systemThe way the system external delivers data to the system is as follows1. Keyboard2. Mouse3. Enter commandsoutput output standout [standard correct input] stderr [Standard Error Output] String after su ...

Posted on Wed, 01 Jan 2020 23:45:37 -0800 by nicandre

Postgresql10 centos7 create dblink, extension, materialized view, external table

The company has a project that needs to change the original MySQL database to Postgre database and make a record. Environment introduction The service operating system is Centos7, and the database version is Postgesql10 Using process When using mysql database, we use the kitchen tool to link the data at both ends for data ...

Posted on Fri, 15 Nov 2019 12:16:49 -0800 by Coreyjames25

Linux Centos7-sshd remote login, key pair login, TCP Wrappers access control

This chapter environment: VM virtual machine, a server as a server, a server as a client The purpose of this chapter is to understand sshd remote login management, key pair authentication, Tcp wappers access control 1. sshd remote login 1. View sshd services [root@localhost ~]# netstat -ntap | grep 22 tcp 0 0 192.168.122.1:53 ...

Posted on Mon, 16 Sep 2019 00:29:32 -0700 by kmarsh

Remote Access and Control in Linux

SSH remote management Introduction of SSH Remote Control SSH is a secure channel protocol, which mainly implements the functions of remote login and remote replication of character interface. SSH protocol encrypts the data transmission between the two sides of communication, including the user password input when the user logs in. Compared wit ...

Posted on Mon, 16 Sep 2019 00:12:03 -0700 by Karl33to

Bird Brother's linux Private Vegetable Learning Notes "Twenty-seven" User Identity Switching

su Parameters: - Simple use - such as "su-" means login-shell variable file reading method to login the system; If the user name is not added, it represents the identity switched to root. - l: Similar to - but need to add user account to switch later! It's also the way login-shell works. - m:-m is the same as-p, which means &qu ...

Posted on Wed, 17 Jul 2019 18:11:40 -0700 by MystedVeil

Android 6.0: Dynamic Rights Management Solution

Reproduced from: http://blog.csdn.net/caroline_wendy/article/details/50587230 Android version 6.0 (Api 23) has introduced a number of new features that dramatically enhance the user experience and place new burdens on programmers. Dynamic rights management is like this, making it easier for users to control their privacy and re-adapting their ...

Posted on Sat, 06 Jul 2019 09:50:43 -0700 by mm00