Atlassian Marketplace server is not reachable


If you are seeing the error message 'The Atlassian Marketplace server is not reachable. Available application updates will not appear on this page." on the Jira Version & License page - https://jira.mycompany.com/plugins/servlet/applications/versions-licenses. Then you should check the following three places: Network Make sure your Jira box has a workable network. Run some ping or curl testings to … Continue reading Atlassian Marketplace server is not reachable

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Run hubot and hubot-slack behind proxy


If you are struggling to run hubot with Slack behind the corporate proxy. Here are two things that you can try: Set https_proxy environment variables, it has to be lower case. If the corporate proxy intercepts https (it means the proxy decrypts then re-encrypts the https traffics with its own certificate which most likely to … Continue reading Run hubot and hubot-slack behind proxy

DNS-over-HTTPS


Just found out Google public DNS supports DNS-over-HTTPS. A single curl command can give you the result in json format. Very nice! Syntax: curl -s https://dns.google.com/resolve?name=xxxx curl -s https://dns.google.com/resolve?name=ap-southeast-2.aws.amazon.com | jq -r . { "Status": 3, "TC": false, "RD": true, "RA": true, "AD": false, "CD": false, "Question": [ { "name": "ap-southeast-2.aws.amazon.com.", "type": 1 } ], "Authority": … Continue reading DNS-over-HTTPS

Fault Tolerant VPN Solution on AWS


I worked with a project team to help them to improve their current VPN infrastructure on AWS. They have 3 VPN EC2 instances, let's call them VPN01, VPN02 and VPN03. They are all OpenVPN Access Server, VPN01 and VPN02 both have 10 concurrent sessions license, and in availability a and b respectively. VPN03 only has … Continue reading Fault Tolerant VPN Solution on AWS