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. […]
To enable password less SSH login on VMWare ESXI server, add your SSH key to file
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/etc/ssh/keys-root/authorized_keys |
[…]
To list all running VM, run
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esxcli vm process list |
To list all installed software
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esxcli software vib list |
Example
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[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
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gcloud compute firewall-rules create allow-port80-all --allow tcp:80 --source-ranges 0.0.0.0/0 --network default |
[…]
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.
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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.
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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
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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 command is used to manage Kubernetes Clusters. To install kubectl on Linux, run
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wget https://raw.githubusercontent.com/serverok/server-setup/master/install/kubectl.sh bash kubectl.sh |
On Ubuntu, you can install from snap using
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sudo snap install kubectl --classic |
or with apt
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apt-get install kubectl |
To get help, run
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kubectl help |
Check if Kubernetes environment is ready
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kubectl version |
Run nginx container
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kubectl run nginx --image=nginx:1.10.0 |
Connect to a pod
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kubectl exec monolith --stdin --tty -c monolith /bin/sh |
Execute a command in pod
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kubectl exec POD-ID-HERE -- COMMAND_HERE |
[…]
To install LetsEncrypt SSL on bitnami wordpress server, install letsencrypt with
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wget https://raw.githubusercontent.com/serverok/server-setup/master/install/letsencrypt.sh sh ./letsencrypt.sh |
Stop apache web server with
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/opt/bitnami/ctlscript.sh stop apache |
Now get SSL certificate using certbot
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certbot certonly --standalone -d YOUR-DOMAIN.EXT -d www.YOUR-DOMAIN.EXT |
Now you have SSL certficate, lets copy it to bitnami folder
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cat /etc/letsencrypt/live/YOUR-DOMAIN.EXT/privkey.pem > /opt/bitnami/apache2/conf/server.key cat /etc/letsencrypt/live/YOUR-DOMAIN.EXT/cert.pem > /opt/bitnami/apache2/conf/server.crt cat /etc/letsencrypt/live/YOUR-DOMAIN.EXT/chain.pem >> /opt/bitnami/apache2/conf/server.crt |
Start the web server with
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/opt/bitnami/ctlscript.sh start apache |
Auto Renew LetsEncrypt Create file
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mkdir /usr/serverok vi /usr/serverok/ssl-renew |
Add following to the file. Replace […]
To add ISO to VMware ESXi, enable SSH access VMware > Actions > Services > Enable Secure Shell (SSH) Once enabled, you will be able to login to server using SSH. Once logged in, go to folder
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cd /vmfs/volumes/datastore1 |
Create a folder ISO and change directory to ISO folder.
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mkdir ISO cd ISO |
Now you can download whatever ISO […]
To get SSH access to a Google Compute VM using gcloud command line tool, run
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gcloud compute --project "PROJECT_NAME_JERE" ssh --zone "ZONE_HERE" "VM_NAME_HERE" |
To list all instances, run
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gcloud compute instances list |
[…]