linux sysadmin tools

I am a Linux operations engineer, a bit of experience in this area, and now I say to master what kind of tools itwhen it comes to tools, it can be said to be a skill, and in the line we are generally called tools, which are tools that must be mastered by operations. I will p

Common Linux Network Tools: fping host scanning and linuxfping In Linux, there are many powerful network scanning tools, including host scanning, host service scanning, and route scanning. Fping is a host scanning tool. Compared with ping tools, fping can scan hosts in bat

8 database management tools suitable for Linux users! From the content management system to simple tables, databases are part of every development project. This is why developers emphasize the use of the correct type of database tools. The following 10 database management tools for

Linux: errors occur during processing: open-vm-tools, E: Sub-process/usr/bin/dpkg returned an error code (1), open-vm-toolsdpkg I encountered this error today ...... It's been a long time ...... An error occurred while processing: open-vm-tools-dkms open-vm-dkmsE: Sub-process/usr/bin/dpkg returned an error code (1) Solution: Sudo apt-get autoremove open-vm-d

http://lpy999.blog.163.com/blog/static/117372061201352401516325/The main problem here is to realize the easy and quick copying and pasting between Linux system and Windows system.Like Ctrl + C is as convenient as CTRL + V.System environment: RHEL5,WINXP or ubuntu12.04 (Linux), Win7 systemThe following directives are executed under the executive permission of the Superuser.To solve this problem, just install

1, the minimized Linux system (Centos\redhat) does not have the Setup graphics gadget installed by default, and you enter the Setup command to prompt command not found.If you want to use this command to install the method1. Install the setup Tools gadget and use CentOS as an example yum-y install Setuptool .2, after installation, you will find nothing inside, this is just a graphical tool. We need to use th

After installing Kali Linux 2.0, the first thing to do is to add the source and update the system, otherwise there will be software positioning problems.In Kali 2.0, VMware Tools is no longer available, and the official release of a tool to download the installation is good.Add Source:Deb Http://mirrors.ustc.edu.cn/kali kali-rolling main Non-free contribUpdate:Apt-get UpdateApt-get Dist-upgradeRebootInstall

Ansible-Bulk Linux management tools"Ansible is easy it Automation"--simple automated IT tools. Batch execution of commands on a remote server Automating the deployment of apps Automation Management Configuration Items Automated Cloud service Management Install (Ubuntu)Rely on SSH and python Apt-get Install Ansible Co

Linux has a lot of powerful network scanning tools, network scanning tools can be divided into: host scanning, host service scanning, route scanning and so on.Fping is a host scan tool that can scan hosts in batches compared to the Ping tool.Fping Official website: http://fping.org/Fping source code compilation and installation Visit Fping's official websit

of process execution;The name of the terminal to which the process is connected;process Resource consumption: For example, resource size (memory, CPU consumption); ii. Process ManagementLinux processes are managed through process management tools, such as Htop , glances , Dstat waitHtop is a Linux an interactive process viewer in the system, with the Linux of tr

To install Vmwaretools in centos6.5 environment for example, explain the installation steps1. Select the virtual machine right-click, install/Upgrade VMware Tools, and the installation package will be mapped to the server.For example, mapping to the/media/directory2. Mount this installation fileMount/dev/sr0/mnt/cdrom3. View the files included in the Vmwaretools4. Copy the vmwaretools-9.9.2-2496486.tar.gz file to the/tmp temp directoryCP vmwaretools-9

These days I try to do some stress testing and performance optimization for the project, and also make a summary of the used test tools, and make a summary of the relevant data for later use. 1 Introduction Improving application performance is a time-consuming effort, but it is often not obvious what functions in a program consume most of the execution time. The GNU Compiler Toolkit provides an profiling tool for the GNU Profiler (gprof). Gprof can

1. Replace with Xs-tools.iso in Xencenter Li Guang Drive 2. Login SSH:[Root@ns0 ~]# cd/mnt [Root@ns0 mnt]# ls [Root@ns0 mnt]# mkdir xs-tools [Root@ns0 mnt]# mount/dev/xvdd/mnt/xs-tools/ Mount:block DEVICE/DEV/XVDD is write-protected, mounting read-only [Root@ns0 mnt]# cd/mnt/xs-tools/linux/ [Root@ns0

Tcpdump for Linux system security tools 1. Install the built-in tcpdump tool. Yum install tcpdump-y 2. Monitor host data packets [Root @ CentOS179min ~] # Tcpdump-I eth0 -- monitor the eth0 Nic of the Local Machine [Root @ centos179min ~] # Tcpdump host 192.168.1.250 and \ (192.168.1.20.or 192.168.1.252 \) -- intercepts packets from multiple IP addresses [Root @ centos179min ~] # Tcpdump-I eth0 dst host 192

routines installed)Linux will have a easy_install command in path after the installation is complete, and Windows will appear in the Scripts folder in the root directory of Python Easy_ Install.exe files (These are my own perceptions, there must be more accurate descriptions just I don't know.) ）。 Running these two executable programs allows you to install some of the things Python needs. For example, we can use Easy_install to install PIP. In additi

]: Sort based on the size of the resident memory P[Capital]: Sort by CPU percent size T[Capital]: Sort by time/cumulative time H[caps]: Show threads, W[Capital]: Writes the current settings to the ~/.TOPRC file. This is the recommended way to write top configuration files Common:C: Toggle display command name and full command line 1 (number 1): List all individual CPU load conditions z:top display color p[uppercase]: List program by CPU high and low order m[uppercase]: List

inspectors that can run concurrently. This allows systems with a large number of disks to avoid fsckBooting too many file system inspectors at a time can potentially deplete the machine's CPU and memory resources. If the value is 0, you can hatch an unlimited number of processes, which is the current default value. FutureVersion ofFsck will try to automatically determine how many file system checks should be initiated based on the statistics of the collection operating system.The path PATH envi

/mongodb.log--auth--logappendAfter startup, the default port is 27017, which detectsNetstat-tunlp1.5 Starting the ClientNo certification required$sudo MONGOCertification requiredsudo mongo-u user-p pwd ip:port/db_log1.6 Close MongodWall Crack RecommendationEnter MONGO ShellUse Admindb.shutdownserver ()Orsudo killall mongodresolutely oppose kill-9 Mongod2. Set the passwordNote : The V3 version of MongoDB no longer uses adduser, but uses Db.createuser.To set a password under no-secret conditions:A

conceptual things: buffer and cache.What is the main buffer? Should be the data to be processed, mainly to deal with the problem of speed mismatch between 2 systems. The cache, in general, should be the caching of the resulting data, such as loading some information from the DB for querying.Swap partition, is to use the hard disk to do a portion of the cache, if swap is very frequent, that is, memory is not enough!List Description:PID process ID, user users, PR priority, VIRT virtual memory, RE

Monitors the servers built on the linux operating system platform, including many aspects, here, I will summarize several linux monitoring tools and their installation and usage through network learning. 1. phpSysinfo [root @ localhost ~] #Llphpsysinfo-3.0.14.tar.gz-rw-r -- 1rootroot470084Oct1718: 16 phpsysin ForLinux operating systemThe monitoring of servers on