akamai outage

Sometimes the computer is like a sense of its own, a plug in the power to start their own, often scary jump. Computer host a plug in the power will be automatically turned on, because the motherboard BIOS set up the caller's own boot. Different bios, set the method is not the same, the following list several: Enter the Power Management Setup (source management settings) →power Again (re-caller status), which determines the power supply when power is restored, after an accidental po

, except the monitoring Center, the registration center through the presence of long-connection-aware service providers, service providers down, the registry will immediately push events to notify consumers. The Registry and Monitoring Center are all down, without impacting the already running providers and consumers, who cache the provider list locally. Registries and monitoring centers are optional and service consumers can connect directly to service providers (2) Jian-like sex: Monitoring Ce

Linux distributions do not use the barrier=1 option and do not disable write caching, so many Linux distributions are vulnerable to this problem. Note that this is an operating system and hardware problem, SQLite is powerless, other database engine also has this problem.If a crash or power outage occurs, a hot log is generated, but the hot log is deleted. The next process opens the database without knowing that the database needs to be rolled back an

first Data _id:10 is a unique key, and then insert the same data can not be inserted, Two IDs cannot be the same). No error message was returned to the client because {writeconcern:{w:0}} caused an exception to occur.2) when W:1 is acknowledgedTesting (data loss scenarios occur)When W:1, it solves the problem that w:0 appears, from can see the first data insert succeeds, the remaining 9 data will insert to fail and return error message to the client.However, when W:1, MongoDB will return the in

read services, and increasing the secondary node can provide the read service capability of the replica set while increasing the availability of the replica set. In addition, MONGODB supports flexible configuration of the secondary nodes of the replica set to accommodate the needs of a variety of scenarios. Arbiter The Arbiter node only participates in voting, cannot be selected as primary, and does not synchronize data from primary. For example, if you deploy a 2-node replica set, 1 primary,1

block of all rows affected by the sql statement is read into DB buffer and the redo information is written to redo log buffer (only the log buffers, not the log files), The user can send a commit command,commit trigger the LGWR process, but does not force an immediate DBWR to release all the corresponding DB buffer blocks (that is, no-force-at-commit, commits are not forced to write), which means that there is Although it may have been a commit, dbwr is still writing the block of data involved

the Nagios monitoring object. Cfg_file=/usr/local/nagios/etc/objects/localhost.cfg A configuration file that references the Nagios monitoring Local (Linux) host. Resource_file=/usr/local/nagios/etc/resource.cfg The resource_file variable is used to define the Nagios resource profile, and multiple resource files can be defined in nagios.cfg. Status_file=/usr/local/nagios/var/status.dat The status_file variable is used to define the Nagios state file, which holds the current state of Nagios, the

because the entire system is split across multiple servers, the likelihood of downtime within the system increases, and once an outage occurs, it affects the application.3 Data consistency is not easy to grasp4 Maintenance More troubleIn a word, it depends on the situation, not distributed for distribution.There are several specific strategies for distribution:1 Distributed Applications and servicesPlease refer to my understanding of the Java Distrib

1: a power outage occurs on the weekend. The newly configured Intranet Test Database activedataguard is automatically disabled. After the master database is started this morning, the following error is reported: [Oracle @ db1 ~] $ Sqlplus 1: a power outage occurs on the weekend. The new configured Intranet Test Database active recovery uard environment is automatically disabled. After the master database is

The options for the different motherboards and CMOS models will vary, but I think it should not be too much, generally in both [POWER MANAGEMENT SETUP] and [Integrated peripherals] options. Here are two types of BIOS setup methods mainly have two kinds of Bios:1) Award BIOS setup method is as follows: first go to the CMOS settings main interface, select [POWER MANAGEMENT Setup], and select [PWR Lost Resume State], There are three options for this item. Select the [Keep OFF] Item, which means the