es1 512

-1-thread-1 thread submit task // pool-1-thread-2 thread submit task} Package demo1; import java. util. concurrent. executorService; import java. util. concurrent. executors; public class ThreadPoolDemo {public static void main (String [] args) {// call the factory class method to create the thread pool ExecutorService es1 = Executors. newFixedThreadPool (2); es1.submit (new ThreadPoolRunnable ();

description of the phenomenonEs version 1.4.5+centos 6.5 Es1,es2,es3 three es form a cluster, the cluster state is normal, when the ES1 server restarts, es1 can not add to the cluster, their own election as Master, which produced the so-called "brain fissure" es cluster, the es1 ES service restart,

Use fdisk to add hard disk partitions and fdisk to add Hard Disk Partitions 1. use fdisk to create 6 partitions [1 P + 1E (5L)] // dev/sdb1/dev/sdb5/dev/sdb6/dev/sdb7/dev/sdb8/deb/sdb9 1 [root@server ~]# fdisk -l 2 3 Disk /dev/sda: 8589 MB, 8589934592 bytes 4 255 heads, 63 sectors/track, 1044 cylinders 5 Units = cylinders of 16065 * 512 = 8225280 bytes 6 Sector size (logical/physical): 512 bytes /

Record the log of creating LVM at one time and create LVM log records First, let's take a picture of laruence LVM. I feel this is the clearest picture. # The following is a direct record using the Xshell logging system. Some Comments [BEGIN] 9:22:24 # Check the hard disk first. [root @ iZ23h637rtdZ ~] # Fdisk-lDisk/dev/vda: 64.4 GB, 64424509440 bytes255 heads, 63 sectors/track, 7832 cylindersUnits = cylinders of 16065*512 = 8225280 bytesSector size

1. Check if RAC is normal[Oracle @ racdb01 ~] $ Crs_stat-TName type target State host------------------------------------------------------------Ora. RAC. DB application online racdb01Ora... s1.inst application online racdb01Ora... s2.inst application online racdb02Ora... esdb. CS application online racdb01Ora... es1.srv application online racdb01Ora... es2.srv application online racdb02Ora... 01. lsnr application online racdb01Ora... b01.gsd applicat

1. Check the database status. The status is normal. [Oracle @ racdb01 RAC] $ crs_stat-TName type target State host------------------------------------------------------------Ora. RAC. DB application online racdb01Ora... s1.inst application online racdb01Ora... s2.inst application online racdb02Ora... esdb. CS application online racdb01Ora... es1.srv application online racdb01Ora... 01. lsnr application online racdb01Ora... b01.gsd application online r

retriable 1.2 format shared media Start the VM and perform formatting. [Root @ Rac1 ~] # Cd/dev [Root @ Rac1 Dev] # ls SD * SDA sda1 sda2 sda3 SDB SDC SDD SDE -- SDB, SDC, SDD, and SDE here are the virtual media we have added. [Root @ Rac1 Dev] # fdisk-l Disk/dev/SDA: 16.1 GB, 16106127360 bytes 255 heads, 63 sectors/track, 1958 Cylinders Units = cylinders of 16065*512 = 8225280 bytes Sector size (logical/physical):

accessed Write-cache off # Whether to enable or disable caching Restart the service to make the modified configuration take effect. [Root @ racscsi home] #/etc/init. d/tgtd restart Determine whether the iscsi server is successful. If the following information is displayed, the iscsi server is successfully configured. [Root @ racscsi home] # tgt-admin -- show Target 1: iqn.2008-09.com. example: asm System information: Driver: iscsi State: ready I _T nexus information: I _T nexus: 1 Initiator: i

In vmware linux, after a new disk is added, refresh the disk, scan the SCSI bus again, and add the SCSI device without restarting the VM. [Root @ centos4 scsi_host] # ls Host0 host1 host2 [Root @ centos4 scsi_host] # fdisk-l Disk/dev/sda: 21.5 GB, 21474836480 bytes, 41943040 sectors Units = sectors of 1*512 = 512 bytes Sector size (logical/physical): 512 bytes/

, 2001111154688 bytes255 heads, + sectors/track, 243287 Cyli Ndersunits = Cylinders of 16065 * 8225280 bytessector size (logical/physical): bytes/512 bytesi/o Size (minimu M/optimal): bytes/512 bytesdisk identifier:0x0004a319 Device Boot Start End Blocks Id syste M/DEV/SDB1 1 243288 1954208768 Linux disk/dev/sdd:4000.2 GB, 4000225165312 bytes255 heads, 63 Sectors/track, 486333 cylindersunits = cylinders of

Hot Standby shell script file mysql1 # cat mysqlbackup. sh #! /Usr/local/bin/fish # The backup policy is daily full backup # set the backup path variable set backupdir/usr/db/backup # generate the backup Directory mkdir-p $ backupdir # Delete the backup time backup for more than one month find $ backupdir/-mtime + 30-type d-delete # Start backup innobackupex -- user = root -- password = 'yue5bkgof $ '-- parallel = 12 $ backupdir/ mysql1 # cd/usr/db/backup/mysql1 # mysql1 # lltotal 442drwxr-xr-x

| user space CS | EIP To be consistent with the interrupt and abnormal stack, % eax is pushed first after ENTRY (system_call) and SAVE_ALL is performed. The content on the kernel stack is | User stack SS | user stack ESP | EFLAGS | user space CS | EIP | EAX | ES | DS | EAX | EBP | EDI | ESI | EDX | ECX | EBX The last end is similar to the interrupt (RESTORE_ALL ). // ----- Interrupt, exception, system call: End Interruptions, exceptions, and system calls are omitted: the timing of the detect

1, shared host directory to the container Docker run-d--name=test-v/opt/test:/usr/databases docker-testTest is the name of the container, it needs to be unique;-V indicates that a data volume is created and mounted in a container, and the example indicates that the/opt/test directory of the host is mounted to the container's/usr/databases directory; docker-test is the name of the mirror. 2, sometimes need to share the container of the volume, you need to use other ways to access 1) Adopt –volume

display/entry units v verify the partition table w write table to disk and exit x extra functionality (experts only)Command (m for help): nCommand action e extended p primary partition (1-4)pPartition number (1-4): 1First cylinder (1-2610, default 1): Using default value 1Last cylinder, +cylinders or +size{K,M,G} (1-2610, default 2610): +10GCommand (m for help): pDisk /dev/sdb: 21.5 GB, 21474836480 bytes255 heads, 63 sectors/track, 2610 cylindersUnits = cylinders of 16065 *

How to fix docker containers that cannot be started Background: On the test server, an elasticsearch service cluster is built using docker. Because the plug-in for Chinese Word Segmentation needs to be installed for es, the installation cannot be started due to a problem. Because it is used for testing and development and does not mount data volumes for containers, after the containers are closed, there will be no related directories on the host machine. The directory structure of the Plugins di

logstash. conf configuration file Logstash User Manual: http://logstash.net/docs/1.4.2/ Log4j server configuration instance: log4j. conf Input {Log4j {Data_timeout => 5# Mode => "server"# Port => 4560}}Filter {JSON {Source => "message"Remove_field => ["message", "class", "file", "host", "method", "path", "Priority", "Thread", "type ", "logger_name"]}}Output {# Stdout {codec => JSON}Redis {Host => "redis. internal.173"Port = gt; 6379Data_type => "list"Key => "soalog"}} Logsta

1, what is Ace (slightly) 2, what is Proactor (slightly) 3. Example:/ace_wrappers/examples/reactor/proactor/test_proactor 3.1. Operating Environment 172.16.34.11:winxp 172.16.33.34:linux (version slightly) 172.16.33.23:solaris (version slightly) 3.2, 34.11 as the server side, 33.34 as the client: Server Side starts First: D:/share/ace_server_code/ace_wrappers5.4/examples/reactor/proactor>test_proactor-d C:/test.txt Client initiates send file: [Jcwang@portal proactor]$./test_proactor-h 172.16.

conv3-64 conv3-64 conv3-64 conv3-64 LRN conv3-64 conv3-64 conv3-64 conv3-64 maxpool conv3-128 conv3-128 conv3-128 conv3-128 conv3-128 conv3-128 conv3-128 conv3-128 conv3-128 conv3-128 maxpool conv3-256 conv3-256 conv3-256 conv3-256 conv3-256 conv3-256 conv3-256 conv3-256 conv3-256 conv3-256 conv3-256 conv3-256 conv1-256 conv3-256 conv3-256 conv3-256

Label:According to Betteridge's law (any headline question can be answered in one word: no), unless your JSON data is rarely modified and has many queries. The latest version of PostgreSQL adds more support for JSON, and we've asked if PostgreSQL can replace MongoDB as a JSON database, the answer is obvious, but hopefully, aha, the question is asked by the reader. "Isn't PostgreSQL already having some JSON support?" ”Yes, the version before PostgreSQL 9.4 also has JSON data type, you can do this

Linux disk relationship knowledge I have learned more or less about linux disk management, including hard disks, logical disks, and lvm, however, I encountered a lot of problems and confusions when I checked the linux database yesterday. I also reviewed the related knowledge. First, let's take a look at the disk situation: df-k File System 1 K-block used available % mount point /Dev/mapper/vg_sspdb1-lv_root 51606140 2754580 46230120 6%/ Tmpfs 32984140 0 32984140 0%/dev/shm /Dev/sda1 495844 38042