To list instances in Google Cloud App Engine, run
|
1 |
gcloud app instances list |
To create an application
|
1 |
gcloud app create |
To deploy an application
|
1 |
gcloud app deploy |
[…]
Google Cloud SQL
To create a Google Cloud SQL database, run
|
1 |
gcloud sql instances create INSTANCE_NAME_HERE --activation-policy=ALWAYS --tier=db-n1-standard-1 |
INSTANCE_NAME_HERE = this can be anything, lowercase letters, 0-9, for identification purpose only. db-n1-standard-1 => this is size of the server, you can change it as needed. To create a Database, run
|
1 |
gcloud sql databases create DB_NAME_HERE --instance INSTANCE_NAME_HERE |
To create a User, run
|
1 |
gcloud sql users set-password root --host=% --instance INSTANCE_NAME_HERE --password=PASSWORD_HERE |
To list all google cloud SQL instances, […]
Set Permanant hostname on AWS EC2 CentOS 7 server
On AWS EC2 when you boot, hostname set something like ip-172-31-41-172.eu-central-1.compute.internal To chaneg this, run
|
1 |
hostnamectl set-hostname --static HOSTNAME_HERE |
Example
|
1 |
hostnamectl set-hostname --static server1.serverok.in |
To disable change of hostname, run
|
1 |
echo "preserve_hostname: true" > /etc/cloud/cloud.cfg.d/99_hostname.cfg |
Now reboot your server with
|
1 |
reboot |
[…]
Resize Amazon EC2 Boot Disk
Once you resize disk in Amazon AWS console, it get auto resized on reboot. Some times this won’t happen, you have to manually resize the disk. To resize disk, do the following. 1) Take a snapshot of the disk 2) Create a new server in same availability zone as current server. Lets call it tmpServer. […]
VMWare ESXI add SSH key
To enable password less SSH login on VMWare ESXI server, add your SSH key to file
|
1 |
/etc/ssh/keys-root/authorized_keys |
[…]
VMWare esxcli
To list all running VM, run
|
1 |
esxcli vm process list |
To list all installed software
|
1 |
esxcli software vib list |
Example
|
1 2 3 |
[root@server:~] esxcli software vib list | grep esx-ui esx-ui 1.33.1-12086396 VMware VMwareCertified 2019-02-24 [root@server:~] |
[…]
Google Cloud open a port in firewall
To open port 80 globally for all VMs on google cloud project, run
|
1 |
gcloud compute firewall-rules create allow-port80-all --allow tcp:80 --source-ranges 0.0.0.0/0 --network default |
[…]
Route 53
Amazon Route 53 DKIM error […]
Amazon Route 53 DKIM error
DKIM keys failed to validate on a mail server. The domain used Amazon ROute 53 DNS server. amavisd-new showkeys command print out following public key for this domain.
|
1 2 3 4 5 6 7 8 9 10 |
root@mail:~# amavisd-new showkeys ; key#1 1024 bits, i=dkim, d=temashipyard.com.gh, /var/lib/dkim/temashipyard.com.gh.pem dkim._domainkey.temashipyard.com.gh. 3600 TXT ( "v=DKIM1; p=" "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDWcxPI2x5A0JtsRFfm6w8FNoWe" "tDPtFAQz7fbWfIQC98sth7407E7IiskMDGL1Je1OCP/0nKT3IkduNjh1yJlzN5db" "/phTtdIKsPmGAcqjskDBqLKRiKmPhknZVfO0EwqwCrFO0i9ZpN9" "vTGmquN0EdzPLK77iQIDAQAB") root@mail:~# |
When you cut and paste this in Amazon ROute 53, it get treadted as 4 seperate TXT records.
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 |
root@mail:~# nslookup -q=txt dkim._domainkey.temashipyard.com.gh Server: 172.31.0.2 Address: 172.31.0.2#53 Non-authoritative answer: dkim._domainkey.temashipyard.com.gh text = "v=DKIM1; p=" dkim._domainkey.temashipyard.com.gh text = "vTGmquN0EdzPLK77iQIDAQAB" dkim._domainkey.temashipyard.com.gh text = "/phTtdIKsPmGAcqjskDBqLKRiKmPhknZVfO0EwqwCrFO0i9ZpN9MFBoY91Bzt9o4" dkim._domainkey.temashipyard.com.gh text = "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDWcxPI2x5A0JtsRFfm6w8FNoWe" dkim._domainkey.temashipyard.com.gh text = "tDPtFAQz7fbWfIQC98sth7407E7IiskMDGL1Je1OCP/0nKT3IkduNjh1yJlzN5db" Authoritative answers can be found from: root@mail:~# |
When i test with
|
1 2 3 |
root@mail:~# amavisd-new testkeys TESTING#1 temashipyard.com.gh: dkim._domainkey.temashipyard.com.gh => invalid (public key: syntax error) root@mail:~# |
It shows […]
kubectl
kubectl command is used to manage Kubernetes Clusters. To install kubectl on Linux, run
|
1 2 |
wget https://raw.githubusercontent.com/serverok/server-setup/master/install/kubectl.sh bash kubectl.sh |
On Ubuntu, you can install from snap using
|
1 |
sudo snap install kubectl --classic |
or with apt
|
1 |
apt-get install kubectl |
To get help, run
|
1 |
kubectl help |
Check if Kubernetes environment is ready
|
1 |
kubectl version |
Run nginx container
|
1 |
kubectl run nginx --image=nginx:1.10.0 |
Connect to a pod
|
1 |
kubectl exec monolith --stdin --tty -c monolith /bin/sh |
Execute a command in pod
|
1 |
kubectl exec POD-ID-HERE -- COMMAND_HERE |
[…]