colocation facility

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Leveraging pacemaker cluster Management to maximize Apache availability

op defaults timeout=240s [Root@node1 ~]# PCs resource op defaults timeout:240s ⑥ ensure that resources are running at the same node (1) In order to reduce the load of each machine, pacemaker will intelligently try to spread resources over each node. However, we can tell the cluster that two resources are connected and run at the same node (or different nodes run). Here we tell the cluster website to run only on nodes with Clusterip. (2) For this reason we use managed constraints to make it

Configure always on availability Group for SQL Server on Ubuntu

cluster: sudo pcs resource create Ag_cluster ocf:mssql:ag ag_name=ubuntuag--master Meta notify=true e) Create a virtual IP resource on the primary node in cluster: sudo pcs resource create Virtualip OCF:HEARTBEAT:IPADDR2 ip=** f) Configure dependencies and boot order for cluster resources: sudo pcs constraint colocation add virtualip ag_cluster-master INFINITY with-rsc-role=master sudo pcs constraint Orde R promote Ag_cluster-master then start Virtua

How to use Visual Studio 2010 to generate random test data in a database

"Import Data Objects and Settings" in the popup menu, such as: This will open a Data Import wizard window, for example, will prompt the user to connect to the existing database, we just need to follow the wizard to complete the steps. After the data import is complete, the following message appears indicating that the data was imported successfully. server hosting King Ann faster! "Click to enter" room located in the backbone node, users visit the site the fastest. Jingan-Henan's larger multi

COROSYNC+PACEMAKER+MYSQL+DRBD enables high availability of MySQL

protected] bin]# Drbdadm secondary mystore[Email protected] bin]# Drbd-overview0:mystore/0 Connected secondary/secondary uptodate/uptodate#################### node2 MySQL Installation complete ###################### Configure high availability must stop DRBD[[email protected] ~]# Systemctl stop DRBD[[email protected] ~]# Systemctl stop DRBD[Email protected] ~]# pcs cluster start--all# define a virtual IP addressCRM (Live) configure# primitive mysqlip OCF:HEARTBEAT:IPADDR2 params ip=200# define

Configuring an NFS-based MySQL ha cluster based on the Heartbeat V2 CRM implementation

"title=" 2014-09-09 22_05_54-linux HA Management client.jpg "alt=" wkiol1qpcw2sgc3kaalow30_tz0596.jpg "/> Define the constraints between these three resourcesNFS and MYSQLD to run on one node:650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/49/1B/wKiom1QPCb6jECPgAAC76KQtXxo526.jpg "title=" 2014-09-09 22_07_37-linux HA Management client.jpg "alt=" wkiom1qpcb6jecpgaac76kqtxxo526.jpg "/>650" this.width=650 ; "Src=" http://s3.51cto.com/wyfs02/M01/49/1C/wKioL1QPChbwTfoEAALLjODpjkU852.jpg "

Corosync +DRBD Implement Ha MariaDB

: ipaddrparamsip=172.16.10.28nic=eth0cidr_netmask=16opmonitorinterval=20 timeout=20 #定义fip =172.16.10.28crm (live) #primitive mystorocf:linbit:drbd Paramsdrbd_resource=mysqlfsopmonitorrole=masterinterval=10stimeout=20op monitorrole=slaveinterval=20timeout=20opstarttimeout=240opstop timeout=100 #定义drbd Main Resources CRM (live) configure#msms_mystormystormeta clone-max=2clone-node-max=1master-max=1master-node-max=1notify=true# Define Master Resource cloning Properties CRM (live) configure#primi

Architecture Design of A Graphical Data Maintenance Tool

: project information, GIS Point Facility business data, GIS Line facility business data, GIS layer information, GIS various points, Line facility geometric rules, topological relationships, business rules, and so on. The graphic data maintenance tool needs to operate the business database corresponding to each raster map, read and correct the business attributes

The automatic running script of Oracle10g under Solaris10

Solaris10 uses SMF (Service Management Facility) to centrally manage various systems and network services. It aims to reduce the difficulty of system management and reduce the probability of system errors. Practice Solaris 10 uses SMF (Service Management Facility) to centrally manage various systems and network services. It aims to reduce the difficulty of system management and reduce the chance of system e

Construct and run modules

module, this information can be used to check the compatibility between the module and the running kernel. 6. kernel symbol table The kernel symbol table contains the addresses of all global kernel items (functions and variables), which is required to implement modular drivers. If a module needs to export symbols from other modules, use the following macro: Export_symbol (name ); Export_symbol_gpl (name ); The _ GPL version allows the module to be exported to be used only by the module under t

Syslog-ng filters (filter)

facilities can also be selected. note that this is only possible when using the name of the facilities. it is not possible to select ranges the numerical codes of the facilities. # Note: there is also a facility filter function that can be used to filter out specific faiclity. It also supports range filtering. # It is also filtered based on the internal number of facility.

VC debugging collection

generated more quickly than the output window processing speed, the message will fill the buffer zone and the data will be lost.Simple Method: Call the sleep API function when outputting a code segment with a large amount of data, such as an object dump function. Example: Sleep (100 ). Debugging1. When an error occurs, call getlasterror () to obtain the corresponding error code.The error code bit field has a fixed format, which is detailed in C:/program files/Microsoft Visual Studio/vc98/includ

SMS error code: + CMS

Error Description CMS error: 1 Unassigned number CMS error: 8 Operator determined barring CMS error: 10 Call bared CMS error: 21 Short Message Transfer rejected CMS error: 27 Destination out of service CMS error: 28 Unindentified subscriber CMS error: 29 Facility rejected CMS error: 30 Unknown subscriber

Read more about ntstatus

In msdn: The following figure shows the layout for ntstatus values. Ntstatus Layout 313029 28 16 15 0 // + ---- + -- + ------------------------- + ------------------------------- +// | Sev | c | r | facility | code |// + ---- + -- + ------------------------- + ------------------------------- + TheSevField shown in the ntstatus layout figure indicates the severity code, which must be one of the following system-defined values: Status_severity_su

Linux Log Management Learning

configuration Redhat5 service name: syslog configuration file:/etc/syslog. confC/S architecture: log records are transmitted through TCP or UDP services, which are distributed on the day of different hosts. Log centralized management event record format: Date and time host process [pid]: Event content centos6 7 service name: rsyslog features: multi-channel work module, through UDP, TCP, SSL, TLS, the RELP protocol service transfers log records, centrally manages logs distributed on different ho

Introduction to Linux: syslog in Linux

Introduction to Linux: syslog in Linux Syslog is the default log daemon in linux. The default syslog configuration file is/etc/syslog. conf. The program, daemon, and kernel provide system access log information. Any program that wishes to generate log information can call the syslog interface to generate this information. Almost all network devices can transmit log information to the remote server through the syslog protocol, while the remote server listens to port 514 of udp through syslogd, an

Log Policy-ace

Example of ACE log policy used in rizhi Multithreading IntroductionI have previously introduced an open-source log system log4cplus, and ACE also has its own logging facility, similar to log4cplus. Ace Log SystemIt also features thread security, flexibility, and hierarchical display.ProgramDebugging, running, testing, and maintenanceInformation is output to screens, files, system logs (such as Event Logs in Windows), and even remote servers. In

Simulate MMU to design a route table that indexes IPv4 addresses, which is different from DxR and mmudxr.

Simulate MMU to design a route table that indexes IPv4 addresses, which is different from DxR and mmudxr.I don't know if anyone has played this game. Maybe, maybe not.Time and space are always on the opposite sides. because of incomplete facilities, you can only choose when resources are scarce. However, if the resources are abundant, you can have both the fish and the bear's paw! For route search, the compact data structure occupies a small amount of space. Is it time-consuming? If we consider

Explore Oracle RMAN_07 recovery

message file for product = RDBMS, facility = ORA; arguments: [5] ORA-01110: Message 1110 not found; No message file for product = RDBMS, facility = ORA; arguments: [5] [/DBData/WWL/wwl001.dbf] ORA-27037: Message 27037 not found; No message file for product = RDBMS, facility = ORA Linux Error: 2: No such file ordirectory Additional information: 3 ORA-1157 signall

Log File error handling

create a file record every time you write a daemon, do you remember that there are many files? What if I want to view it later?Implementation Mechanism:The syslog mechanism is responsible for sending and recording the information generated by the system kernel and tools. It consists of the syslog () call, the syslogd daemon process, and the configuration file/etc/rsyslog. conf. When the system kernel and tool generate information, call syslog () to send the information to syslogd. syslogd then

ORA-00600: internalerrorcode, arguments: [2, 15709]

internal error happened while SMON was doing active transaction recovery. that is to say, an exception occurs when SMON recovers the active transaction. The database instance is down. The log output is as follows: Fri Sep 26 10:53:35 2014Errors in file /oracle/app/oracle/admin/wxyydb/bdump/wxyydb_smon_28997.trc:ORA-00600: internal error code, arguments: [15709], [29], [1], [], [], [], [], []ORA-30319: Message 30319 not found; product=RDBMS; facility

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