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Troubleshooting CentOS : a practical guide to troubleshooting the CentOS 7 community-based enterprise server /
It is assumed that you will already have a server up and running, you have a good working knowledge of CentOS, and you are comfortable with the concept of working with those services used by your server.
| Clasificación: | Libro Electrónico |
|---|---|
| Autor principal: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Birmingham, UK :
Packt Publishing,
2015.
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| Colección: | Community experience distilled.
|
| Temas: | |
| Acceso en línea: | Texto completo (Requiere registro previo con correo institucional) |
Tabla de Contenidos:
- Cover
- Copyright
- Credits
- About the Author
- About the Reviewers
- www.PacktPub.com
- Table of Contents
- Preface
- Chapter 1: Basics of Troubleshooting CentOS
- Installing some basic tools
- Gathering hardware information
- Understanding dmesg
- Understanding log files
- Reading log files and affecting the output
- Using tail to monitor log files
- Using cat, less, and more
- Using grep
- Using diff
- Using truncation
- Summary
- References
- Chapter 2 : Troubleshooting Active Processes
- Tuning server performance with memory management and swapManaging memory with vmstat
- Checking the system load with the top command
- Monitoring disk I/O with iotop
- Checking processes with the ps command
- Checking performance with iostat and lsof
- Calculating the system load
- Discovering process IDs with pgrep and systemctl
- More about systemd
- Issuing the kill signal
- Dealing with an orphaned process
- Summary
- References
- Chapter 3 : Troubleshooting the Network Environment
- Using ping, dig, host, traceroute, and mtr
- The ping commandThe dig and host commands
- The traceroute command
- The mtr command
- Monitoring network connections with the ss command
- Packet analysis with tcpdump
- Summary
- References
- Chapter 4 : Troubleshooting Package Management and System Upgrades
- Gathering software information
- Using Yum plugins
- Fixing Yum operations
- Installing additional Yum repositories
- EPEL
- Remi
- The IUS repository
- Downloading an RPM package with Yum
- Diagnosing a corrupt RPM database
- Minor release upgrades
- Summary
- ""Summary""""References""; ""Chapter 6 : Troubleshooting Shared Resources""; ""Providing NFS shares on a CentOS 7 server""; ""About NFS exports""; ""Mounting NFS shares on a CentOS client""; ""Mounting an external drive with CIFS""; ""Using autofs to mount an external drive""; ""Summary""; ""References""; ""Chapter 7 : Troubleshooting Security Issues""; ""Auditing SELinux with aureport and setroubleshoot""; ""SSH banners""; ""Tuning SSH""; ""Intrusion detection with Tripwire""; ""Firewalld � zone, service, and port management""; ""Removing Firewalld and returning to iptables""; ""Summary""