Cloud Applications

1. before installing nagios, install the GCC compiler, GD library, and web service on the server and create a nagios account # useraddnagios & nbsp; & nbsp; # passwdnagios & nbsp; # usermod-Gnagiosapache & nbsp; & n 1. nagios basic

1. create a read/write account & nbsp; useraddwriter # An account with an empty password & nbsp; passwdwriter # set a password for the new user & nbsp; cd/usr/local/samba/bin & nbsp ;. /smbpasswd-awriter # grant the password of the webmaster user

Shell may often see: the result of the & gt;/dev/null2 & gt; & amp; 1 command can be passed % & gt; output/dev/null indicates the empty device file & gt; indicates the redirection location, for example, echo123 & gt;/home/123.txt 1 indicates the

GRUB: on the boot loader menu, type [e] to enter the editing mode. You will face a list of pilot projects. Find the line with the output similar to the following: kernel/vmlinuz-2.4.18-0.4roroot/dev/hda2 press the arrow key until the line is

In our daily work, we will encounter various scenarios. merging two different domains into the same domain involves migration of user configuration files. The following are the specific implementation steps. Log on to the user's computer using an

It is generally used to create swap and can also be used to back up the file format: ddif & quot; input_file & quot; of & quot; output_file & quot; bs & quot; block_size & quot; count & quot; number & quot; parameter: if: input file, which can be a

Configure Nginx + Tomcat load balancing (supports Session sharing) & lt; & gt; 1. configure the environment in Debian 6. & Lt; & gt; 1, & lt; & gt; & amp; sup2; & lt; & gt; & amp; sup2; & lt; & gt; & amp; sup2; & lt; & gt; & amp; sup2; & lt; & gt; &

Shutdown is a command for shutdown. in Linux, parameters must be included. for example, shutdown-hnow is a command for immediate shutdown. However, when running such commands on a terminal, Linux does not shut down sometimes, after reading a lot of

There was a machine. today, I found that I didn't open a firewall, and it actually belonged to me, Khan. I found no password or record. I don't want to remotely reinstall it. I am worried that the data on several virtual machines running above may

Memcache is often used to accelerate the processing of applications. you don't need to say much about memcache, that is, adistributedmemoryobjectcachingsystem. since it is a system for storing things, you must have a place to store it, let's call it

Gccandg ++ is the gnu c & c ++ compiler gcc/g ++, which requires a total of four steps 1 during compilation. preprocessing to generate. I files [pre-processor cpp] 2. convert the pre-processed files into assembly languages to generate files. s

Shell script execution has three methods: bash script name sh script name chmod + x script name Test #. sh (extension not allowed) cd/pwdecho & quot; complete & quot; however, during the execution, the path is changed, but the final result is that

We often install Windows operating systems in Hyper-V of Windows server2008. In fact, Hyper-V can also install Linux systems. Currently, the following operating systems are officially supported: lsuselinuxjavasiseserver10withser...   We often

1. communication methods between processes in Linux: signals, pipelines and named pipelines, message queues share primary memory, semaphores, sockets 3. signal communication 3.1. in a Linux environment, you can run the kill-l command to obtain the

If you are familiar with windows, you will think that it is very easy to execute every operation, but this is not the case after installing linux. you may think that you have logged on with the user name and password you set in advance after

Recently, a password-less login is required to build a Hadoop environment. The so-called password-less login actually refers to the login through certificate authentication, which is called & quot; public/private key & quot; authentication method

Ctrl + C: Send the SIGINT signal. by default, the process ends, but the process itself can redefine the behavior of receiving the signal. Ctrl + Z: Send the SIGSTOP signal, the process is only stopped, then send the SIGCONT signal, and the process

After starting the tomcat service and entering the project address, we can find that the page remains in the loading process for several minutes, which cannot be allowed in a normal production environment. Therefore, a corresponding investigation

Today, an internal server desktop is garbled in Chinese! If there is yum, yuminstallfonts-chinese-3.02-9.6.el5.noarch.rpm or rpm-ivhfonts-chinese3.02-9.6.el5.noarch.rpm directly and then [root @ pps ~] # Cat/etc/sysconfig... Today, an internal

Sort command summary function: sorting syntax: sort [-bcdfimMnr] [-o & lt; output file & gt;] [-t & lt; separator & gt;] [+ & lt; start Column & gt;-& lt; end column & gt;] [-- help] [-- verison] [file] parameters: -B ignores the leading space