Untitled

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restore docker psql

cat PostgreSQL-postgres_.sql | docker exec -i postgres94 psql -U postgres

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List Repository Docker Registry

curl --cacert certs/registry-ca-cert.crt -X GET https://myregistry:5000/v2/_catalog

List tag repositories

curl --cacert certs/registry-ca-cert.crt -X GET https://myregistry:5000/v2/ubuntu/tags/list 

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shutdown VBox Guest VM CLI

vboxmanage controlvm windows10 poweroff soft

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nmap Host alive scan

nmap -v -sP -R 172.16.43.129-159

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dd Clone & Backup

backup:

dd if=/dev/sdb of=sd.img bs=4M

restore:

dd if=sd.img of=/dev/sdb bs=4M

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MySQL Dump (Backup)

single

mysqldump -u root -p[root_password] [database_name] > dumpfilename.sql

multiple

mysqldump -u root -ptmppassword --databases bugs sugarcrm > bugs_sugarcrm.sql

all

mysqldump -u root -ptmppassword --all-databases > /tmp/all-database.sql

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Private registry hosted on docker

Edit file /etc/default/docker 

add :

--insecure-registry hub.wiguna.io

On docker-machine

docker-machine create --driver virtualbox --engine-insecure-registry hub.wiguna.io manager

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Sierra There is no connected camera

run terminal 

sudo killall VDCAssistant

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Mounting qcow vdisk

qemu-nbd --connect=/dev/nbd0 [qcow file]

qemu-nbd --connect=/dev/nbd0 /var/lib/nova/instances/8f8dabce-f387-42ff-9d8f-8c9176b3e564/disk

mounting 

mkdir /mnt/nbdrive

mount /dev/nbd0p1 /mnt/nbdrive

disconnecting vdevice

umount /mnt/nbdrive 

qemu-nbd --disconnect /dev/nbd0

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Manually create openstack instance images

qemu-img convert -f qcow2 -O qcow2 [disk file] [output file].qcow2 -p

disk : file that the name is “disk” under /var/lib/nova/instances/[instance ID]/

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Generate Cert for Dokcer Registry

domain name : registry.wiguna.io

openssl genrsa -out devregistryCA.key 2048 openssl req -x509 -new -nodes -key devregistryCA.key -days 10000 -out devregistryCA.crt openssl genrsa -out registry.wiguna.io.key 2048 openssl req -new -key registry.wiguna.io.key -out dev-docker-registry.wiguna.io.csr openssl x509 -req -in dev-docker-registry.wiguna.io.csr -CA devregistryCA.crt -CAkey devregistryCA.key -CAcreateserial -out registry.wiguna.io.crt -days 10000

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Docker Machine Error Unable to Query Docker Version

Unable to query docker version: Get https://192.168.99.100:2376/v1.15/version: x509: certificate is valid for 192.168.99.102, not 192.168.99.100

to fix that

docker-machine regenerate-certs default

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snapshot openstack instance

nova image-create 5a5a3df2-1a81-4f79-97bd-f4e2281f0e68 oldproject-v2.6.4-20161120

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