webex outage

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

Author Li Linfeng released on June 19, 2014 | 29 Discussions Share to: Weibo facebooktwitter Youdao Cloud Note email sharing Read later My list of reading 1. Background 1.1. The cost of downtime 1.1.1. Telecom IndustryIn a survey of 74 operators in 46 countries, KPMG International found that the global communications industry lost about $40 billion a year, accounting for 1%-3% of total revenue. There are many factors that lead to revenue loss, the main reason is the billin

is not displayed.When you add a recommended unit, the association type shown in the list does not match the input you added.Display the item details as the project name in the material details list of the document.In the export field in the Outage plan query, the "cause of power outage" should be "cause of power outage."The key hints are incorrect and mislead th

the election order 3.Link detectionThe spanning tree port state machine is based on the Hello message, so the spanning tree can perceive the link2 fiber link fault in Figure 1. By default spanning tree Hello Timer 2 s, dead timer S. For the network shown in Figure 3, the failover time is too long, and you can shorten the failover time by changing the network diameter 4来.MAC Refresh IssuesConfigure the MSTP after load Balancing test: (see Figure 3). LINK1 Link disconnects, network

localization is not always possible, such as in the case of a hregion move (for example, split), the next compact is required to continue back to localization.In accordance with the principle of semi-translation, and then a "in-depth look at the HBase Architecture" architecture diagram:This architecture diagram clearly expresses the hmaster and Namenode support multiple hot backup, use zookeeper to do coordination; Zookeeper is not cloud-like mystery, it is generally composed of three machines

its own slot that is not responsible,The Redis instance address that is responsible for requesting key slot will be returned to the client, and the client will automatically resend the original request to this address for external transparency.Exactly which slot a key belongs to is determined by CRC16 (key)% 16384 . With regard to load balancing, the clustered Redis instance can migrate data between slots, but not automatically, requiring external command triggering. With regard to cluster me

Registry and Monitoring Center are all down, without impacting the already running providers and consumers, who cache the provider list locallyRegistries and monitoring centers are optional and service consumers can connect directly to service providersJian-like sexMonitoring Center outage does not affect use, just lost part of the sampled dataAfter the database is down, the registryService list queries can still be provided through the cache, but ne

outage does not affect use, just lost part of the sampled data After the database is down, the registry can still provide a list of services through the cache, but cannot register for new services Registration center peer cluster, after any one outage, will automatically switch to another After the registry is all down, service providers and service consumers can still communicate via local cac

disks: 1 (normal SATA disk)Kafka version: 0.8.2Cluster Size: 4 nodesNumber of topic copies: 3Topic number of shards (partition): 4Disaster simulation One of the nodes is down during message sending, or two nodes are down at the same time (up to 2 simultaneously, because the number of replicas is 3) Frequent downtime restarting one of the nodes Alternate outage Restart one or two broker but guaranteed not to have 3 node outages at the

PHP + MYSQL message book (3 ). The page display is not completed ~~ (The culprit is the power outage today '~ 'Find objective reasons )~ Today, no new code can be pasted out ~~ I just got a package of the original database connection statement because the page display is not completed ~~ (The culprit is the power outage today '~ 'Find objective reasons )~ Today, no new code can be pasted out ~~ Just get th

"original statement" This article belongs to the author original, has authorized Infoq Chinese station first, reproduced please must be marked at the beginning of the article from "Jason's Blog", and attached the original link http://www.jasongj.com/2015/06/08/KafkaColumn3/SummaryIn this paper, based on the previous article, the HA mechanism of Kafka is explained in detail, and various ha related scenarios such as broker Failover,controller Failover,topic creation/deletion, broker initiating, Fo

, service consumers are long connections between the three, except the monitoring center The registry will immediately push events to inform consumers of the presence of a long-connected-aware service provider, service provider downtime 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 pr

automatically by the Kafka controller node broker, mainly reading and modifying some of the metadata information from the affected partition from Z ookeeper. In the current Kafka version implementation, all operations for Zooke Eper are done by the Kafka controller (serially Way).Typically, when a broker stops a service in a planned manner, the controller removes all leader on the broker before the service is stopped. Since the movement time of a single leader takes about a few milliseconds, a

First, High available HA (high available) is highly available and is also known as a dual-machine hot standby for critical business. The simple understanding is that there are two machines A and B, the normal is a service, B standby idle, when a down or service outage, will switch to the B machine to continue to provide services. Commonly used high-availability open source software has heartbeat and keepalived, where keepalived has load-balanced f

Setup and Jedis of Sentinel clusters in the top two redis tutorials [i] and the setup and Jedis of Sentinel clusters in Redis [II] The construction of Sentinel cluster in Redis and the Jedis test of Java code are briefly described.　　 This article mainly to analyze briefly the principle of Redis-sentinel cluster, according to track Sentinel information to complete the Redis-sentinel cluster testing in the detailed principle analysis. Including the analysis of Sentinel information in Master-slave,

outage timeOle_1.object.setactivecell (4, 3)Select ZZ_DWMC into: ls_dwmc from B04 where ZZ_DWBM =: gs_lrdw;Ole_1.object.Entry = ls_dwmc // enter the planned power outage UnitOle_1.object.setactivecell (4, 6)Ole_1.object.Entry = xm // enter the nameElseIf fileexists ("c:/book1.vts") thenFiledelete ("c:/book1.vts ")End ifFh = fileopen ("c:/book1.vts", streammode !, Write !) // Create a temporary fileIf fh Fi

delete code from a complex web page a little bit. In this way, you must pay attention to the code deleted, you have solved the problem. This is the cause of the problem. If you are a smart person, you must understand the problem. Don't just focus on the results and don't ask why. If you encounter a few more questions, your improvement will be much faster. In fact, the debugging capability is very important. In actual work, anyone will surely encounter inconsistencies between the effects they

files cocould be read and written from multiple servers. this created a huge amount of complexity from the IT operations point of view, and it meant that system backups (database + audio data) cocould get out of sync. now that they're in Mongo, we can reach them anywhere in the data center with the same Mongo driver, and backups are consistent guest ss the system. Capped collections. We keep trend data inside capped collections, which have been wonderful for keeping datasets from unbounded gro

policies, such as no Fsync, Fsync per second, or every time you write a command Fsyn C. The default policy for AOF is Fsync once per second, in which Redis can still maintain good performance and, even if there is a failure, it will lose at most one second of data (Fsync will execute in a background thread, so the main thread can continue to work on the command request). The AOF file is an append-only log file (append only), so the write to the AOF file does not require seek, even if the log co