audacity troubleshooting

With more proxy firewalls installed between the client and the server, troubleshooting of connection failures is more complicated than before. However, a little understanding of the Transmission Control Protocol (TCP) "handshake" process helps diagnose connection problems, including proxy firewalls.First, for some of us who have grown white hair since our last online course launch, let's review how TCP handshake works. TCP is a connection-oriented pro

cannot be located again. I knew this was a precursor to a hardware failure, so I began to remove the image. However, the server says that the image cannot be completely removed, because one of the logical volumes has only one good copy, and it is on a faulty disk. How can I solve this problem and change the hardware? Troubleshooting Process Remember these two example problems. Now let's take a look at the process of solving them. Step 1: Do not tampe

In actual application, DNS resolution errors may occur, that is, when we access a domain name, it cannot be resolved to an IP address, however, you can directly enter the website IP address for normal access, which is caused by a DNS resolution failure. This phenomenon has a high probability of occurrence, so this article will teach you some basic DNS troubleshooting methods from scratch. 1. What is a DNS resolution fault? Generally, www.51cto.com is

Troubleshooting of high CPU load Today, a tomcat process has a cpu load of 100%. Follow these steps to identify the cause. 1. Run the top-c command to find the id of the process with the highest cpu 2. Run the top-H-p pid command to display the resource consumption of all threads of the process you just found. Find the thread tid 8627 with high CPU load, and convert the number to hexadecimal, 21B3. 3. Execute jstack-l pid to get the thread dump fi

Troubleshooting instance caused by SELinux This was the first time we encountered such an error. We had no clue about the troubleshooting process and had been entangled in the child setpgid. We can also see some cases when setting selinux in the google process, so I want to start from this aspect. The reason is that selinux is enabled, but it is strange that after redirecting from other terminal ssh, no ope

Nagios and Cacti troubleshooting considerations Nagios and Cacti troubleshooting considerations I. Precautions for Naigos restart 1. Check the configuration file integrity before restarting the nagios Service (perform web page synchronization) 2. Pay attention to the Operation Sequence During master-slave synchronization. Do not worry about the operation sequence. Check the alarm mechanism (enable or disabl

As the RedHatEnterpriseLinux System Administrator, you need to know how to correct the configuration files related to the startup process. For this reason, there will be some questions to test your troubleshooting and analysis skills. The following cases and solutions list the problems and solutions you may encounter during the startup process. These are far from enough. These solutions work on my computer and I have already configured them. However,

About ORA-01031: insufficientprivileges troubleshooting Summary About ORA-01031: insufficient privileges troubleshooting Summary A) File $ ORACLE_HOME/network/admin/sqlnet. oraDoes this involve oracle OS authentication or password file authentication? The AUTHENTICATION_SERVICES parameter in $ ORACLE_HOME/network/admin/sqlnet. ora is as follows:1. In windows, SQLNET. AUTHENTICATION_SERVICES must be set to

Apache System troubleshooting solutions and related operations knowledge1. Check the Apache service on which port is listening, there are several Apache in the service, its initial PID is how muchNetstat-alop |grep LISTEN |grep httpd2. View the location of the current Apache PID file from the configuration fileVi/usr/local/apache/conf/httpd.conf## pidfile:the file in which the server should record its process# identification number when it starts.#Pid

Enable the log feature of Open vSwitch in Linux for debugging and troubleshooting I tried to deploy troubleshooting for my Open vSwitch. In view of this, I want to check its debugging information generated by the built-in log mechanism. How can I enable the log function of Open vSwitch and modify its log level (for example, to INFO/DEBUG level) to check more detailed debugging information? Open vSwitch (OVS

The Programmable switch is still quite commonly used. So I studied the troubleshooting method of the programmable switch and shared it with you here. I hope it will be useful to you. The HJD04 program-controlled switch and the public network of Posts and Telecommunications adopt the DOD1 loop relay network. All users cannot make an external phone call and are busy. At this time, observe the MFP on the Multi-frequency signaling processing board. The la

Article Title: Linux: NFS server troubleshooting. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. In Red Hat Enterprise Linux 5.0 server, if NFS fails, you can check the problem from the following aspects. 1.1 troubleshooting ideas (1) Whether the NFS client and serve

Samba common troubleshooting-Linux Enterprise Application-Linux server application information. For details, refer to the following section. 1. Actions on the SMB server 1) run the following command to check whether the configuration is incorrect. /Usr/bin/testparm/etc/smb. conf 2). Run the ping command on the server and the client to check whether the TCP/IP works properly. 3). Use the/usr/bin/smbclient-L SMBserver command on the SMB server to get

Article Title: Linux Practice strategy: NFS server troubleshooting. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. In Red Hat Enterprise Linux 5.0 server, if NFS fails, you can check the problem from the following aspects. 1.1 troubleshooting ideas (1) Whether the NFS c

associated with the Wow game, need to confirm) 2 consecutive days of normal security software use, web browsing and other operations more than 3 hours, no problem with the shutdown Motherboard Model: gigabyte (GIGABYTE) B85M-D3H motherboard (Intel B85/lga 1150)Power Model: Delta rated 450W NX450 power supply (80PLUS bronze/12cm temperature-controlled mute fan/support back line)Troubleshooting logs:2014-12-08Because the problem situation is not a

and nature of the problem. Categories: 1. database instance Problems 2. Database Problems 3. database performance problems 4. Database-related issues in Application Development Let's talk about the troubleshooting and best practices of DB2, and explain each type of problem in detail. I. database instance Problems Database instance problems can be divided into two situations 1. The instance cannot be started. After running db2start, an error code, suc

TimeZone is not only an environmental variable in Oracle, but also incorporated into the data value retention process. In the Oracle field type, the field types related to the time zone are only TimeZone is not only an environmental variable in Oracle, but also incorporated into the data value retention process. In the Oracle field type, the field types related to the time zone are only Upgrading any software, especially enterprise-level system components, is a very complicated process. The

Database users cannot log on to alert Log reporting ORA-04031 troubleshooting Database users cannot log on to alert Log reporting ORA-04031 troubleshooting Symptom:1. SQL plus/as sysdba cannot access the database host. 2. the alert Log reports the following errors:Errors in file/Oracle/admin/dbrac/bdump/dbrac2_q000_1329.trc:ORA-22303: type "SYS". "AQ $ _ HISTORY" not foundORA-00604: error occurred at r

Demonstration of port aggregation configuration and troubleshooting of Huawei switch s5700Huawei port aggregation is divided into two types: manual Load Balancing eth-trunk link and LACP eth-trunk link. I will only introduce the former here. The manual eth-trunk can be regarded as an interface, which can be access or trunk. After creation, the configuration is exactly the same as that of the configuration interface. I will demonstrate the trunk mode h

Troubleshooting of abnormal shutdown of MySQLSlave (pt-slave-restart) Troubleshooting of abnormal shutdown of MySQL Slave (pt-slave-restart) The following three methods are used to handle abnormal shutdown of MySQL Slave.You can also use the pt-slave-restart command of percona-toolkit.The percona-toolkit-2.2.8-1.noarch.rpm needs to install some dependency packages. Yum install perl-DBI perl-DBD-MySQL