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1. OverviewA project's online Distributed File System server crashes multiple linux system kernel on a certain day of a certain month, seriously affecting the project's ability to provide external services, which has a great impact on the company. The reason for Linux Kernel panic is basically determined by troubleshooting online problems. The reason for Linux Kernel panic is basically determined through troublesh
Recent troubleshooting Android WebView HTTPS power consumption and slow load problemsProblem: H5 page Heating power consumptionTroubleshooting: Viewing the CPU consumption curve from the Android Studio Profiler, it is found that the WebView Carousel wave consumes the CPU and peaks up to 45% in the static condition. Because the animation in the H5 page loaded by WebView results in a redraw of the entire webview.Workaround: Swapping with the X5 kernel f
Https://help.aliyun.com/knowledge_detail/41225.html?spm=5176.7841174.2.2.ifP9ScNote: The relevant configuration and instructions in this article have been tested in the CentOS 6.5 64-bit operating system. Other types and versions of the operating system configuration may vary, please refer to the appropriate operating system official documentation.If the CPU of ECS Linux system keeps running high, it will affect the stability of the system and the operation of the cloud server. This paper gives
Troubleshooting and remediation techniques for Linux systemsI found that the Linux system in the boot process will have some failures, causing the system to not start normally, I wrote here a few application of single user mode, Grub command operation, Linux Rescue mode of the failure to repair cases to help you understand the resolution of such problems.(i) Single user modeLinux systems provide single-user mode (similar to Windows Safe Mode) for syst
Administrators and developers in SharePoint 2010 may be familiar with SharePoint Developer Dashboard (developer Dashboards). The tool has been widely rewritten in SharePoint 2013 and has become increasingly available in your troubleshooting (troubleshooting) Toolkit. Developer Dashboard of SharePoint 2013 has greatly improved the 2010 version to address some of the performance issues. And it has a separate
Tags: detail enhanced storage System load download personal Ability AC RAC Mon PROFESSIONAL SQL SERVER? Internals and troubleshooting (downloadable from here). Think the content is very good. I also want to have a more comprehensive understanding of SQL Server 2012, so look at the translation, and the focus of the content published in the blog. The following is a link to the relevant blog, I hope we can bring a little help. Due to limited personal abi
1. SSH Backdoor classificationSSH Backdoor mode has the following several Soft links SSH Server Wrapper SSH Keylogger 2. Soft link Utilization method [email protected]]# ln-sf/usr/sbin/sshd/tmp/su; /tmp/su-oport=2333; Troubleshooting Methods [email protected]]# Netstat-anopBy developing the PID query process path for port information, the "ll/proc/xxxx" command looks at the path of the program.
(jdkdynamicaopproxy.java:207)At Com.sun.proxy. $Proxy 27.insert (Unknown Source) The HTTP request can be seen from the front-end container until the database is read, stuck in the database where it was read, and not in the JDBC driver code, but in the socket where it was read: Com.mysql.jdbc.util.ReadAheadInputStream.read (readaheadinputstream.java:189)-Locked According to this error search, the only value is n years ago, MySQL official online reported a bug, the same error,
:1Access: (0755/-rwxr-xr-x) uid: (0/root) Gid: ( 0/root) access:2017-05-0717:14:37.862999884+0800modify:2016-05-11 07:23:09.000000000+0800change:2017-05-0717:14:37.146999967+0800 The binary file that found the PS command was recently changed. Workaround: You can copy the/bin/ps binary file on the other machine to overwrite this file of this machine. -------------------------remember a time when the Linux operating system was hacked--------------------------------------one day suddenly found tha
Tags: virtual desktop Horizon view VMware Virtualization Installation DeploymentWe can undertake "VMware Horizon View Desktop Virtualization Technology consulting, troubleshooting, project implementation Remote Installation deployment."We are a VMware Authorized Partner Reseller Enterprise certification, dedicated to VMware virtualization projects, online implementation (technical consulting, troubleshooting
ISA Server Troubleshooting Policy 10.2 ISA Server Troubleshooting Policy The system method is a necessary condition for successful troubleshooting. When an unexpected ISA Server error is encountered, it is possible to troubleshoot by identifying whether the error is based on a user or a packet. This section provides troublesh
Apache Server Troubleshooting Raiders application Server Apache browser configuration Management Network application with the popularization of network technology, application and the continuous improvement of web technology, Web Service has become one of the important service forms on the Internet. The original client/server model is gradually being replaced by the browser/server model. This article will focus on the
■ Ciscoasa # sh cpu usage this command is used to view the current CPU usage of the ASA. ■ Ciscoasa # sh memory This command is used to view the current memory usage of the ASA. Sh memory detail and sh memory binsize are used for advanced memory troubleshooting. Generally, do not use them. ■ Ciscoasa # sh blocks this command is used to view the usage of the ASA buffer. A total of 11 buffer sizes are used for processing different types of data packets
Connecting to the Oracle database and troubleshooting solutions This article is a summary of my connection to Oracle, especially suitable for program developers and Oracle cainiao.HowConfigurationTo connect the client to the database: To enable a client machine to connect to the Oracle database, you must install the Oracle client software on the client machine. The only exception is that the JDBC thin mode can be used when Java connects to th
Configure PAP authentication for PPP authentication configuration and troubleshooting 1. Configure PAP Authentication-Primary authenticated Party: 1. Configure the authentication username and password Router (config) # username user_name password 0 pass_word 2. Enable PAP Authentication Router (config-if) # ppp authentication pap 2. Configure PAP Authentication-authenticated Party B: 1. Configure the authentication username and password Router (config
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 server load is too high, and whether the network between the server and the client is normal. (2) Correctness of the/etc/exports file. (3) restart the NFS or portmap service if necessary. Run the following command to restart portmap and NFS: Service portmap restart
Kernel File "vmlinuz" is converted into "vmlinux" due to incorrect typing, so the system cannot find the executable file of the kernel. You can press any key to return to the GRUB editing interface and modify this error. Press enter and save and press "B" to boot normally. Of course, do not forget to modify the error in the grub. conf file after entering the system. This is an error that many new Linux users can easily make when modifying GRUB settings. When this black screen prompt appears, ob
Problem description: There will always be a loadavg alarm after the project is launched The server runs normally after going online for a period of time. In a certain period of time (usually two hours after going online), The loadreport will suddenly increase to a height (more than 100) and gradually decrease. There are more than 2000 timer threads (depending on the service details, the number of threads is not necessarily large) :
Troubleshooting of non-synchronous VLAN configuration information in VTP, vtpvlan VTP (VLANTrunk Protocol, VLANTrunk Protocol) is a dedicated Cisco VLAN used to maintain and manage dynamic VLANs (such as VLAN Based on MAC addresses, IP addresses, network protocols, and VLAN management policies). It can be used to automatically transmit and exchange VLAN configuration information on the Trunk link, so that the VLAN configurations of switches in the sam
SYSTEM image according to the boot system command settings in the startup configuration, if this command is not set, the operating system image is loaded from the system image on a default network server. When the 6th-bit value is 1, the configurations in NVRAM are ignored when the vro starts. For example: 0x0: the operating system image is not automatically loaded, but enters the ROM monitor mode and waits for the user to enter the command (for example, if the command fails in the pre
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