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Flume | |
===== | |
ingest : number or sources of origin for events / number of events (per source) <<<<* this is required | |
R.o.T : one aggregator for every 4-16 agents | |
so using the above info work from outer tier to final inner tier - and we know final destination of events : hdfs ? |
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The devices were partitions that served as a SAP Sybase IQ consistency group, and mapped to an EMC VNX 5700 with 9 SSDs configured to provide 20 x 35 GB devices. The devices were mapped to dbspace files as follows: | |
2 devices for shared IQ_SYSTEM_MAIN | |
12 devices for shared IQ_USER_MAIN | |
2 devices for shared IQ_SHARED_TEMP | |
2 devices for node 1 IQ_SYSTEM_TEMP | |
2 devices for node 2 IQ_SYSTEM_TEMP | |
1 device (450 GB) for ext4 filesystem used to host source load data (node 1) | |
brw-rw----. 1 root disk 8, 16 Jul 17 08:17 /dev/sdb |
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o get k8s cluster status | |
# kubectl --kubeconfig ./kubeconfig cluster-info | |
Kubernetes master is running at https://10.68.68.108:443 | |
Elasticsearch is running at https://10.68.68.108:443/api/v1/namespaces/kube-system/services/elasticsearch-logging/proxy | |
Kibana is running at https://10.68.68.108:443/api/v1/namespaces/kube-system/services/kibana-logging/proxy | |
KubeDNS is running at https://10.68.68.108:443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy | |
To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'. |
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Basic Disk Partition Offsets: wmic.exe | |
Windows can be interrogated for disk-related information via Windows Management Instrumentation (WMI). A straightforward method for obtaining partition starting offsets of Windows basic disks is this Wmic.exe command. | |
Command Line Syntax | |
wmic partition get BlockSize, StartingOffset, Name, Index | |
The value for Index is the same as disk number in the Disk Management Microsoft Management Console (MMC) snap-in (Diskmgmt.msc); wmic volume can also be used to map disk indexes and drive letters. | |
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The TRIM command enables an operating system to notify the SSD of pages which no longer contain valid data. For a file deletion operation, the operating system will mark the files sectors as free for new data, then send a TRIM command to the SSD. After trimming, the SSD will not preserve any contents of the block when writing new data to a page of flash memory, resulting in less write amplification (fewer writes), higher write throughput (no need for a read-erase-modify sequence), thus increasing drive life. | |
Different SSDs implement the command somewhat differently, so performance can vary.[3][8] | |
Trim tells the SSD to mark a LBA region as invalid and subsequent reads on the region will not return any meaningful data. However, the data could still reside on the flash internally. | |
are my disks TRIM enabled | |
lsblk -o MOUNTPOINT,DISC-MAX,FSTYPE |
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demo notes for Docker volume driver | |
o cluster VIP / Dataservices VIP | |
o clone Docker host VM from gold image in AHV (set hostname vis hostnamectl set-hostname) | |
o login and install Docker Engine (https://docs.docker.com/engine/installation/linux/docker-ce/centos/) | |
o enable/start docker service |
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http://packages.vmware.com/tools/esx/5.5u1/repos/index.html | |
yum install http://packages.vmware.com/tools/esx/5.5u1/repos/vmware-tools-repo-RHEL6-9.4.5-1.el6.x86_64.rpm | |
yum install vmware-tools-esx-nox | |
20GB additional harddisk - for /u01/app/oracle | |
/dev/sdb1 20G 44M 19G 1% /u01/app/oracle |
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IO Performance: | |
-------------- | |
NCQ - Native Cmd Queueing - SATA II - 32 cmds | |
TCQ - Tagged Cmd Queuing - SCSI 2 - 216 cmds possible (64 cmds supported by most disk queues) | |
- Reordering of cmds when requests for sectors spaced far from one another. | |
- attempts to reduce disk seek time and rotation latency by optimising order in which sectors are found. |
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2048afa6-a785-4aa8-b2b1-6124114ab91d | |
"uuid": "661cd354-33dc-4cdd-8874-9875fc7834b3", | |
"name": "Windows Server 2012 R2", | |
"deleted": false, | |
"storage_container_id": 1023, | |
"storage_container_uuid": "c99819f0-bb38-4a5e-b473-48371ef8561c", | |
"logical_timestamp": 2, | |
"image_type": "DISK_IMAGE", | |
"vm_disk_id": "7eb94d44-8d8d-4da0-82cd-6da4103a14af", |
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o install Docker | |
sudo yum install -y yum-utils | |
sudo yum-config-manager \ | |
--add-repo \ | |
https://download.docker.com/linux/centos/docker-ce.repo | |
sudo yum makecache fast | |
sudo yum install docker-ce |
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