Cloud Applications

Improper MTU settings may cause many network problems, such as the unavailability of some network applications and the unavailability of some websites. The following are the MTU settings that have been searched online. some of them may not be

The command to disable the firewall in Linux. today, I want to take a break from the ssh remote connection port on the LInux server for security purposes, I added a line of port8081 to the sshd_config file, but after the configuration is completed

Functions of the text editor: 1. create or modify a text file 2. maintain the classification of various configuration file text editors in linux: line editor and full screen editor, character interface editor and graphical interface editor the most

The file/etc/fstab contains static file system information and defines how storage devices and partitions are integrated into the entire system. The mount command reads the file and determines the mounting options for the device and partition. File

Kaiwii summarized my own experience in using vi or vim: First, move the cursor up and down: of course, use the arrow keys on the keyboard. (ps: What r, it is a pain to use vi. why should we remember so many commands ?) Simply remember one. press the

On the recently installed suseenterprise10, vim is still the default setting, which is very difficult to use. it took a night to complete the configuration, and sent a lot of information from the Internet, make a backup later ~~ Vim version: 7.3.

The content of linux/etc/fstab mainly includes six items: for example, the following two lines: LABEL/ext3defaults11/dev/sda2/mnt/D/vfatdefaults00 first column: device Name or device volume name (/dev/sda10 or LABEL/) column 2: Device Mount

Description of LVM Logical Volume Creation and Expansion: PV: physical volume VG: volume group (a VG on the physical layer is composed of one or more PVs) LV: logical volume (a VG on the logical level is composed of one or more LV) the order of

In addition to basic commands, the init function of busybox also supports the init function. Like other init functions, the init function of BusyBox also completes system initialization and pre-shutdown, we know that after the Linux kernel is loaded,

1. The/etc/hostsfilemustcontainthefollowinginformation.127.0.0.1localhost. localdomainlocalhost # Public192.168.2.101rac1. localdomainrac1191_2.102rac2. localdoma 1. The/etc/hosts file must contain the followinginformation. 127.0.0.1 localhost.

Usually there are two conditions for OOM: 1. no more pages can be allocated in the VM (note that linuxkernel delays page allocation policies and alloc only when used; therefore, malloc + memset is valid ). 2. insufficient user address space. in this

I have never been very familiar with LVM partitioning before. today it seems that I have to go through this link and paste the information I found on the Internet: # fdisk-l [root @ localhost/] # fdisk-lDisk/dev/sda: 36.7 GB,

1. in RHEL5, download and install the iSCSI initiator package # rpm-ivhiscsi-initiator-utils-6.2.0.871-0.10.el5.i386.rpmwarning: iscsi-initiator-utils-6.2.0.871-0.10.el5.i386.rpm: HeaderV3DSAsignat 1. download and install the iSCSI initiator package

Recently I switched to another project for Ksh and Perl Development. However, I used Eclipse before and it was a little difficult to switch to Vi. I searched the internet and found some Vim enhanced plug-ins to implement the file structure List. the

A friend's server hard drive went wrong over the weekend. The IDC had an IDE hard drive mounted to install the system, and then the former SATA hard drive was mounted. he wanted to reset the data, as a result, the buddy found that he was not sure.

Because the LVM can elastically adjust the file system size, the disadvantage is that it may not be capable of acceleration and hardware backup (unlike snapshot. Disk arrays provide performance and backup functions, but cannot provide advantages

1. use Autofs to automatically mount partitions 2. modify/etc/fstab3. write shell scripts and run the mount command automatically upon startup method 1. features of Autofs1 and Autofs: the difference between Autofs and Mount/Umount is that it is a

The first type keyword mainly includes host, net, port, such as host210.27.48.2, specifying 210.27.48.2 as a host, net202.0.0.0 specifying 202.0.0.0 as a network address, and port23 specifying port number as 23. If no type is specified, the default

In linux, it is very convenient to use tcpdump to capture packets, but wireshark is more convenient to filter and analyze the captured packets. The following describes the use of TCPDUMP example: tcpdumphost172.16.29.40andport4600-the X-s500tcpdump

Upgrade Python2.6.6topython2.7.3 under Centos6.5. for me who don't use Pyhthon, the Python version has little to do with me, but I used to use SSH and suddenly wanted to switch to GoAgent, I suddenly realized that my Python version was too low and I