Index
A
- A/A cluster
- A/P cluster, converting to / Moving to an A/A cluster
- Apache
- DRBD resource, using / Mounting the DRBD resource and using it with Apache
- DRBD resource, testing / Testing the DRBD resource along with Apache
- Apache MPM Common directives
C
- CentOS
- downloading / Downloading CentOS
- URL / Downloading CentOS
- CentOS 7
- using / Why Linux and CentOS 7?
- about / Why Linux and CentOS 7?
- URL / Why Linux and CentOS 7?
- nodes, setting up / Setting up CentOS 7 nodes
- installing / Installing CentOS 7
- cluster
- virtual IP, setting up / Setting up a virtual IP for the cluster
- configuring, with PCS GUI / Configuring our cluster with PCS GUI
- Cluster Information Base (CIB)
- clustering
- about / Clustering fundamentals
- Linux, using / Why Linux and CentOS 7?
- CentOS 7, using / Why Linux and CentOS 7?
- required packages, installing / Installing the packages required for clustering
- clustering services
- configuring / Configuring and starting clustering services
- starting / Configuring and starting clustering services
- enabling / Starting and enabling clustering services
- troubleshooting / Troubleshooting
- cluster resource
- virtual IP, adding / Adding a virtual IP as a cluster resource
- about / Adding a virtual IP as a cluster resource
- web servers, configuring / Configuring the web server as a cluster resource
- problems, troubleshooting / Troubleshooting
- cluster tests
- performing / Introducing initial cluster tests
- fields, retrieving from records / Test 1 – retrieving all fields from all records
- JOIN operations, performing / Test 2 – performing JOIN operations
- failover, performing / Performing a failover
- Corosync
D
- database resource
- performance optimization / Database resource
- indexes, creating / Creating indexes
- query cache, using / Using query cache
- database servers
- installing / Installing the web and database servers
- datagrams
- about / Letting in and letting out
- Dell Remote Access Controller (DRAC)
- Designated Controller (DC)
- Distributed Lock Manager (DLM)
- about / Moving to an A/A cluster
- Distributed Replicated Block Device (DRBD)
- about / Setting up storage
- installing / Setting up storage
- availability / ELRepo repository and DRBD availability
- configuring / Configuring DRBD
- adding, as PCS cluster resource / Adding DRBD as a PCS cluster resource
- DRBD resource
- mounting / Mounting the DRBD resource and using it with Apache
- used, with Apache / Mounting the DRBD resource and using it with Apache
- testing, with Apache / Testing the DRBD resource along with Apache
- Dynamic Shared Objects (DSOs)
E
- ELRepo repository
- Employees database
- setting up / Setting up a sample database
- downloading / Downloading and installing the Employees database
- installing / Downloading and installing the Employees database
- URL / Downloading and installing the Employees database
F
- failover
- fencing
- malfunctioning nodes, isolating / Fencing – isolating the malfunctioning nodes
- about / Fencing – isolating the malfunctioning nodes
G
- Global File System 2 (GFS2)
- about / Moving to an A/A cluster
H
- high-availability database
- setting up, with replicated storage / Setting up a high-availability database with replicated storage
- high-performance cluster (HPC)
- about / Clustering fundamentals
- high availability (HA)
- about / Clustering fundamentals
I
- iLO (Integrated Lights Out)
- indexes
- creating / Creating indexes
- Internet Group Management Protocol (IGMP)
- about / Letting in and letting out
K
- key-based authentication
- setting up, for SSH access / Setting up key-based authentication for SSH access
L
- LAMP stack
- Linbit
- URL / Configuring DRBD
- Linux
- using / Why Linux and CentOS 7?
- Logical Volume (LV)
- Logical Volume Manager (LVM)
M
- man journalctl
- URL / Troubleshooting
- MariaDB
- URL / Using query cache
- members
- about / Clustering fundamentals
- modprobe command
- about / Setting up storage
- mysqlslap tool
- about / Introducing initial cluster tests
- --create-schema flag / Introducing initial cluster tests
- --query flag / Introducing initial cluster tests
- --delimiter flag / Introducing initial cluster tests
- --concurrency flag / Introducing initial cluster tests
- --iterations flag / Introducing initial cluster tests
- --number-of-queries flag / Introducing initial cluster tests
- MySQL tuner
- URL / Using query cache
- MySQL Tuning Primer
- URL / Using query cache
N
- Nagios
- about / Monitoring the node status
- network security
- fundamentals / Security fundamentals
- traffic, allowing between nodes / Letting in and letting out
- nodes
- about / Clustering fundamentals
- status, monitoring / Monitoring the node status
- nodes, CentOS 7
- setting up / Setting up CentOS 7 nodes
- CentOS 7, installing / Installing CentOS 7
- network infrastructure, setting up / Setting up the network infrastructure
P
- Pacemaker
- packages
- installing, for clustering / Installing the packages required for clustering
- software components, using / Key software components
- key-based authentication, setting up for SSH access / Setting up key-based authentication for SSH access
- PCS
- about / Key software components, Starting and enabling clustering services
- setting up / Getting acquainted with PCS
- authentication, managing / Managing authentication and creating the cluster
- cluster, creating / Managing authentication and creating the cluster
- PCS cluster resource
- Distributed Replicated Block Device (DRBD), adding / Adding DRBD as a PCS cluster resource
- PCS GUI
- cluster, configuring / Configuring our cluster with PCS GUI
- performance optimization, cluster
- about / Measuring and improving performance
- Apache's configuration / Apache's configuration and settings
- Apache's settings / Apache's configuration and settings
- modules, disabling / Loading and disabling modules
- modules, loading / Loading and disabling modules
- Apache processes, limiting / Placing limits on the number of Apache processes and children
- Apache children, limiting / Placing limits on the number of Apache processes and children
- database resource / Database resource
- phpMyAdmin Advisor
- URL / Using query cache
- Physical Volume (PV)
- ps command
- about / Cluster services and performance
Q
- query cache
- using / Using query cache
- quorum
R
- replicated storage
- high-availability database, setting up / Setting up a high-availability database with replicated storage
- resource agent
- resources
- monitoring / Monitoring the resources
- starting issues, monitoring / When a resource refuses to start
- availability of core components, checking / Checking the availability of core components
S
- SELinux (Security Enhanced Linux)
- about / Letting in and letting out
- server status page
- Shoot The Other Node In The Head (STONITH)
- simply gateway [192.168.0.1]
- Single Point Of Failure (SPOF)
- software components
- using / Key software components
- Pacemaker / Key software components
- Corosync / Key software components
- PCS / Key software components
- split-brain
- SSH access
- key-based authentication, setting up / Setting up key-based authentication for SSH access
- standard Centos package manager yum
- about / Downloading CentOS
- STONITH device
- installing / Installing and configuring a STONITH device
- configuring / Installing and configuring a STONITH device
- storage
- setting up / Setting up storage
T
- 7789 TCP port
- about / Configuring DRBD
- top command
- about / Cluster services and performance
- Transmission Control Protocol (TCP)
- about / Letting in and letting out
U
- Usage DRBD.org
- URL / Configuring DRBD
- User Datagram Protocol (UDP)
- about / Letting in and letting out
V
- Virtualbox
- virtual hard disk, adding / ELRepo repository and DRBD availability
- VirtualBox
- URL / Setting up CentOS 7 nodes
- installing / Setting up CentOS 7 nodes
- virtual IP
- setting up, for cluster / Setting up a virtual IP for the cluster
- adding, as cluster resource / Adding a virtual IP as a cluster resource
- status, viewing / Viewing the status of the virtual IP
- Volume Group (VG)
W
- web servers
- installing / Installing the web and database servers
- configuring, as cluster resource / Configuring the web server as a cluster resource
Z
- Zabbix
- about / Monitoring the node status