Home | HanG321 Blog

hacktoberfest

October 6, 2018|git|科技資訊

funny, you can get a free tee shirt when you make 5 pull request in Oct 1-31. This is the 5th year but I only knew it now 😛 check out the details in https://hacktoberfest.digitalocean.com/

Google Cloud Summit Sydney 2018 part 1

September 27, 2018|GCP, kubernetes|生活記事, 科技資訊

24 hours 快閃到sydney 訓一晚. 原本打算早點出門, 行過Sydney University 參觀吓先到會場, 可惜落雨都係uber. Keynote 比較大路，冇乜特別，都係話google 投資左好多錢咁啦。GCP 起步遲過AWS, 不過我覺得kubernetes 先係王道，比起vendor lock in AWS 好. 其次我覺得AWS product啲名好麻煩好難記 😅 1st: CI/CD pipelines in the cloud 由source code repo, build & test, artifact management, deliver. 以前係svn + maven + jenkins，而家係github/gitlab + Cloud Build + Container Registey + Spinnaker. 2nd: Kubernetes & Istio: The Efficient Approach to well-managed Infrastructure 之前聽Craig Box 嘅Podcast，今次卒之見到真人，係全日嘅session入邊佢係最流暢嘅presenter. k8s / envoy / sidecar / citadel 似乎真係要落手落腳做過先知深淺。GKE serverless Add-on looks promising. 3rd: AI drives an Exceptional Customer Experience 唔算好technical. High level concept on Contact Centre AI, 但係如果有budget implement 到真係升level 到另一個層次. Google 真係好強力推動 AI. …. 我打字實在太慢，下次再續

升級/轉移 WordPress in GCP marketplace

September 4, 2018|GCP, wordpress, 粵文|科技資訊

舊年係GCP用”WordPress Certified by Bitnami”，原來佢地個個Base Image 係Debian 8. 上兩個月收到通知要更新，今個weekend趁住有時間順便一次過upgrade。今次會試下”Nginx WordPress with NGINX and SSL Certified by Bitnami“，睇下用Nginx會唔會快過Apache。 1. New VM 首先登入GCP，左上角Menu > MarketPlace，然後搜尋 WordPress，再揀Nginx WordPress with NGINX and SSL Certified by Bitnami，按Launch on Compute Engine button。因為Free Tier 嘅關係，記住要揀係美國嘅region，同 f1-micro instance. Disk size 30GB 以下就得, 我自己用15GB. info: https://cloud.google.com/compute/pricing#freeusage 2. Backup 等緊個VM create嘅時候，可以就係用緊嘅WordPress 做 Backup。Install “All-in-One WP Migration” plugin, Export everything. 詳細資料：https://docs.bitnami.com/aws/how-to/migrate-wordpress/，Backup 完然後power off 3. Migrate 個新VM 起好之後，In VPC network > External IP address，這個舊嘅static IP 轉去新 VM 到，然後ssh to new VM, restart all services

sudo /opt/bitnami/ctlscript.sh restart

1	sudo /opt/bitnami/ctlscript.sh restart

再登入新WordPress，check 返site setting同user email address ，如果係 IP address 就改番做Domain name。終於係時候Import返 data： All-in-One WP Migration > Import，upload the backup file. Disable bitnami logo:

sudo /opt/bitnami/apps/wordpress/bnconfig --disable_banner 1
sudo /opt/bitnami/ctlscript.sh restart nginx

1 2	sudo /opt/bitnami/apps/wordpress/bnconfig --disable_banner 1 sudo /opt/bitnami/ctlscript.sh restart nginx

搞掂。當一切安好之後，就可以Delete 舊VM & snapshot。 (Optional 1) 用Let’s encrypt & Cloudflare SSL strict mode: 一直用開 Cloudflare 免費CDN & FleixSSL，而家用 Lets encrtpy 其實可以唔使用 Cloudflare SSL, 不過費事大搞, 轉做strict mode 算. in ssh shell:

sudo /opt/bitnami/letsencrypt/scripts/generate-certificate.sh -m YOURMAIL -d YOURDOMAIN -d www.YOURDOMAIN

1	sudo /opt/bitnami/letsencrypt/scripts/generate-certificate.sh -m YOURMAIL -d YOURDOMAIN -d www.YOURDOMAIN

我揀左 Yes 但係個crontab 都係冇野，要手動加返上去。

crontab -e

 0 0 1 * * sudo /opt/bitnami/letsencrypt/lego --path="/opt/bitnami/letsencrypt" --email="YOURMAIL" --domains="YOURDOMAIN" renew && sudo /opt/bitnami/nginx/sbin/nginx -s reload

crontab -e

0 0 1 * * sudo /opt/bitnami/letsencrypt/lego --path="/opt/bitnami/letsencrypt" --email="YOURMAIL" --domains="YOURDOMAIN" renew && sudo /opt/bitnami/nginx/sbin/nginx -s reload

(Optional 2) redirect HTTP to HTTPS in nginx 如果唔用 Cloudflare redirect，可以係Nginx 做，改 server_name 同埋加 301 ：

server_name hang321.net www.hang321.net
if ($http_x_forwarded_proto = "http") {
  return 301 https://$server_name$request_uri;
}

.....
server_name hang321.net www.hang321.net

server_name hang321.net www.hang321.net

if ($http_x_forwarded_proto = "http") {

return 301 https://$server_name$request_uri;

}

.....

server_name hang321.net www.hang321.net

Reference: https://docs.bitnami.com/aws/how-to/migrate-wordpress/ https://docs.bitnami.com/general/apps/wordpress-pro https://support.cloudflare.com/hc/en-us/articles/200170416-What-do-the-SSL-options-mean-

12 3 4...30...