Centos 6.3 Puppet Function Module instance notes

Today to introduce the specific practical functions of puppet, in fact, my understanding is how lazy, hehe. 1. Fill in the contents of the file: (server): To modify the server-side configuration file: # VI/ETC/PUPPET/MANIFESTS/SITE.PP ----------

Linux CentOS Web server partitioning scheme

actual size resolution of partition type partition Swap partition 2G (memory is 1G, generally twice times the memory) /1g-2g (Minimum 150–250MB) /boot 32m-100m (boot partition, up to 100M only) /OPT 100m-1g (Additional application) /tmp 40m-1000

To download the RPM package in CentOS with the Yum command, but not install the method

Yum is the default package Manager on Red Hat based systems such as CentOS, Fedora, and RHEl. With yum, you can install or update an RPM package, and he will automatically resolve the package dependencies. But what if you just want to download an

CentOS a tutorial on adding a new hard disk to its virtual machine without rebooting

Usually when you add a new hard drive to the virtual machine, you may see that the new hard drive is not loaded automatically. This is because the SCSI bus connected to the hard disk needs to be rescan to make the new hard drive visible. Here is a

CentOS kills process Kill method encyclopedia

The safest way to kill a process is simply to use the KILL command. First use the PS-EF command to determine the PID to kill the process, and then enter the following command: # Kill-pid Note: The standard KILL command usually achieves the

CentOS 7 Installing the SVN server tutorial

Setting up SVN on Windows is simple, but not efficient, of course, compared to Linux. However, it is very cumbersome to build SVN on Linux, and this article will teach you step-by-step how to build svn on CentOS. SOURCE directory:/home/user/project

CentOS to build an FTP server and brief introduction of _FTP server

CentOS Build FTP Server 1. Install VSFTPD sudo yum install vsftpd 2. Configure vsftpd.conf # Allow anonymous FTP? (beware-allowed by default if your comment this. ) Anonymous_enable=no # When SELinux are enforcing check for SE bool

CentOS compile, install and configure Nginx_nginx

1. Install Nginx 1.1 Select stable version We compile and install Nginx to customize our own modules, machines CentOS 6.2 x86_64 . First install the missing dependency pack: # yum -y install gcc gcc-c++ make libtool zlib zlib-devel openssl

CentOS Install the Docker tutorial _docker

Install via Yum Requires root or sudo permission Yum Package update to latest $ sudo yum update Add Docker Yum Source $ sudo tee/etc/yum.repos.d/docker.repo Install Docker Package $ sudo yum install

New features of CentOS 6.5

The Enterprise Linux distribution CentOS has released a new version 6.5. CentOS 6.5 is based on the upstream version of EL6.5, and its major changes include: Precision time Protocol has now been fully supported. OpenSSL has been updated to

CentOS uses PAM to lock multiple login failed users

CentOS uses Pam to lock multiple login failed users Linux has a pam_tally2.so Pam module that limits the number of user logon failures and, if the number reaches the set threshold, locks the user. Compiling Pam's configuration file #

CentOS How do I back up a strategy?

Backup points Consideration of backup Data Problems caused by system corruption: Hardware problem: Hard Drive damage Software problems: Accidental deletion, security attack, Different host roles, different backup tasks Backup factor

CENTOS+APACHE+PYTHON34+DJANGO+MOD_WSGI Development Environment Construction

Write to yourself, Linux OPS. Go through it.Linux:Centos7.3+apache+python3.4+django+mod_wsgi+sambawindows: Eclipse Pycharm SublimePython has been learning recently, although it is easier to develop under Windows, but in general, the program will

When centos 7 is started, the following message is displayed: "initial setup of centos linux 7 (core )"

When centos 7 is started, the following message is displayed: "initial setup of centos linux 7 (core )" After the CentOS7 system is updated, restart the system and report an error (initial setup of centos linux 7 (core )) Solution: Enter "1"

Solve the problem that openssl/opensslv. h cannot be found in centos.

Solve the problem that openssl/opensslv. h cannot be found in centos. Introduction: scrapy is the most famous crawler framework in Python. When installing scrapy, scrapy encountered a problem where a file of openssl could not be found, analyzed, and

CentOS openssl certificate issuing example

Step 1: first create a CA certificate,First, create an RSA private key for the CA,# Cd/etc/pki/CA# Openssl genrsa-des3-out ca. key 1024(Because ssl_module in windows does not support encryption keys, use openssl genrsa-out ca. key 1024)The system

CentOS Error: Cannot retrieve repository metadata (repomd. xml) for repository

This problem occurs during updates.Error: Cannot retrieve repository metadata (repomd. xml) for repository: epel. Please verify its path and try againThis problem is very simple and obvious. SolutionRun the cleanup command,Yum clean metadataYum

Summary: CentOS yum error analysis solution

I. Today, when I was on a small cloud host in yum, I encountered an error:$ Yum-y updateRpmdb: Thread/process 28636/139844750771968 failed: Thread died in Berkeley DB libraryError: db3 error (-30974) from dbenv-> failchk: DB_RUNRECOVERY: Fatal error,

Manually add or delete virtual memory swap zones in CentOS

The released space may come from some programs that haven't been operated for a long time. The released space is temporarily saved to the Swap space and will be executed by those programs, then, the stored data is restored from Swap to the memory.

How to configure iptables in CentOS firewall

Iptables is an IP information package filtering system integrated with Linux kernel. It comes with a firewall function. After configuring the server role function, we need to modify the iptables configuration.You must configure iptables for CentOS,

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