Easy solutions and ideas found after long googling or hard coding
This is an alternative to native SendMail() function that requires authentication in Golang. The function is part of Go Helpers library available on github.
Recently I posted about Varnish with secure AWS S3 bucket as backend and I wanted to have the “always online” enabled, meaning you can take the backend offline while serving from Varnish cache.
Using https://github.com/geerlingguy/ansible-role-solr will install solr with a init.d file which will work well as a service but will not restart on crash. So this ansible script should install solr as a service using systemd:
tasks/service.yml
Serving static contents from S3 is common, but using Varnish in front is a bit tricky. Especially if you want to keep the bucket secure and only serve from Varnish, here is a simple Varnish file to solve this problem.
First secure your bucket via IP policy:
{
"Version": "2012-10-17",
"Id": "S3PolicyId1",
"Statement": [
{
"Sid": "IPAllow",
"Effect": "Allow",
"Principal": "*",
"Action": "s3:GetObject",
"Resource": "arn:aws:s3:::example.bucket/*",
"Condition": {
"IpAddress": {
"aws:SourceIp": [
"5.6.7.8/32" //varnish ip
]
}
}
},
{
"Sid": "Explicit deny to ensure requests are allowed only from specific referer.",
"Effect": "Deny",
"Principal": "*",
"Action": "s3:GetObject",
"Resource": "arn:aws:s3:::example.bucket/*",
"Condition": {
"StringNotLike": {
"aws:Referer": [
"https://example.com/*"
]
}
}
}
]
}
