https://www.oracle.com/cloud/free/ – Every free account have 2 servers free for life. Only for development purpose.
Allow ICMP (ping) in Oracle Cloud
Updating Kernel on Oracle Linux with Ksplice
How to Open Port on Oracle Cloud Ubuntu Server
See Cloud
Oracle cloud do not allow ICMP/ping to compute instances. To enable ping, you need to enable ICMP in the security group.
On your compute instance details page, you will see “Virtual Cloud Network”.
Click on Virtual Cloud Network link, that will take you to page with VPC details.
Scroll down, you will see subnet.
Click on Public Subnet, on next page, it shows details about the subnet. Under Security Lists, you will see Default Security List for VirtualCloudNetwork. Click on it to see your firewall rules.
Click Add Ingress Rules button to add new rule. By default port 22 (SSH) allowed from everyone. ICMP was blocked for everyone (rule 2 and 3).
To allow ICMP, you can add a new Rule for ICMP.
On Add Ingress Rules page, select
SOURCE TYPE = CIDR
SOURCE CIDR = 0.0.0.0/0
IP PROTOCOL = ICMPClick Add Ingress Rules button. Now you should be able to ping to any compute instances on this VPC. It is safe to remove 2 of the existing ICMP rules or edit them instead of adding new rule.
See Oracle Cloud
To connect to Google Cloud SQL, run
gcloud sql connect DB_INSTANE_NAME
To enable CORS for Amazon S3 bucket, add
* PUT POST DELETE 1800 *
To list instances in Google Cloud App Engine, run
gcloud app instances list
To create an application
gcloud app create
To deploy an application
gcloud app deploy
To create a Google Cloud SQL database, run
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
gcloud sql databases create DB_NAME_HERE --instance INSTANCE_NAME_HERE
To create a User, run
gcloud sql users set-password root --host=% --instance INSTANCE_NAME_HERE --password=PASSWORD_HERE
To list all google cloud SQL instances, run
gcloud sql instances list
To list all databases in a Google Cloud SQL server, run
gcloud sql databases list --instance INSTANCE_NAME_HERE
To connect to Google Cloud SQL database, run
gcloud sql connect INSTANCE_NAME_HERE
This will open firewall rule and add your IP so you can connect to Google Cloud SQL 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
hostnamectl set-hostname --static HOSTNAME_HEREExample
hostnamectl set-hostname --static server1.serverok.inTo disable change of hostname, run
echo "preserve_hostname: true" > /etc/cloud/cloud.cfg.d/99_hostname.cfgNow reboot your server with
rebootBack to hostname
Once you resize the disk in the Amazon AWS console, it gets auto resized on reboot. Sometimes this won’t happen, you have to manually resize the disk.
Resize EC2 file system with LVM
To resize the disk, do the following.
1) Take a snapshot of the disk
2) Create a new server in the same availability zone as the current server. Let’s call it tmpServer.
3) Shutdown tmpServer.
4) Shutdown the server that need disk resized. Lets call it mainServer. Make sure you have Elastic IP, if not shutting down changes IP of the server.
5) Detach the disk.
6) Attack the disk in tmpServer as /dev/xvdf
7) Start tmpServer.
Login to tempServer and do the following.
Resize Partition
Firt find the devices
parted -l
In this cause /dev/xvdf is the disk that need to be resized. Current Size is approx 107 GB.
To see free disk space on this disk, run
parted /dev/xvdf print free
There is 21.5GB free space on the disk.
To grow partition 1 to use up remaining disk space, run command
growpart /dev/xvdf 1
Verify free disk space after. Now you see there is not much free disk space left after partition 1.
Resize FileSystem
Resize file system depends on the type of file system you are using. For ext4, do the folllowing.
Check disk using e2fsck
e2fsck -f /dev/xvdf1
If any errors found, you will be asked to press “y” to fix the errors. After e2fsck run, you can reszie filesystem with command
resize2fs /dev/xvdf1
You have completed resizeing the disk. All you need to do now is
8) Shutdown tmpServer
9) Detact the disk from tmpServer (/dev/xvdf)
10) Attach the disk on original server mainServer as /dev/sda1.
11) start the mainServer.
To enable password less SSH login on VMWare ESXI server, add your SSH key to file
/etc/ssh/keys-root/authorized_keys
To list all running VM, run
esxcli vm process list
To list all installed software
esxcli software vib list
Example
[root@server:~] esxcli software vib list | grep esx-ui esx-ui 1.33.1-12086396 VMware VMwareCertified 2019-02-24 [root@server:~]
To open port 80 globally for all VMs on google cloud project, run
gcloud compute firewall-rules create allow-port80-all --allow tcp:80 --source-ranges 0.0.0.0/0 --network default