June ChungMail BasicsMail Basics — about MX records, A records, TXT records etcFeb 2, 2021Feb 2, 2021
June ChungAll About RocketChatAttaching EFS to Rocket Chat or MongoDB instance 1. Beware of the Security groups 2. Install yum install nfs-utils (to mount via nfs) …Jan 28, 2021Jan 28, 2021
June ChungActive Directory (AD)First Create Active Directory in AWS - XXX.com (type in like a domain name) - 2 Availability zonesJan 14, 2021Jan 14, 2021
June ChungWindows Basic CommandHow to check ports running (used ports) netstat -abDec 10, 2020Dec 10, 2020
June ChungCloudformation-Facts(troubleshooting guide)In resource (EC2), you should provide securitygroupID, instead of actual securitygroup name → or will throw parameter group errorDec 10, 2020Dec 10, 2020
June ChungGitlab-3 (AWS secret access)AWS Secrets Manager → create the key — could be RDS, DynamoDB, or custom → Put in any <key> <value> pairDec 3, 2020Dec 3, 2020
June ChungGit Basic CommandsStandard process git status git add . git commit -m “new change” git push [repository name]Nov 23, 2020Nov 23, 2020
June ChungCloud Formation — TroubleshootingWhen your instance failes to create — Because they failed to create specific resources (security group, route53) — Because the success…Nov 10, 2020Nov 10, 2020
