Author:
erics, July 29th, 2021
SUMMARY: Needed to create an AWS IAM Policy to allow a user access to create and delete EBS snapshots. This script also needed to be able to list volumes:
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{ "Version": "2012-10-17", "Statement": [ { "Sid": "VisualEditor0", "Effect": "Allow", "Action": [ "ec2:DeleteSnapshot", "ec2:ModifySnapshotAttribute", "ec2:CreateSnapshots", "ec2:ResetSnapshotAttribute", "ec2:CreateSnapshot" ], "Resource": [ "arn:aws:ec2:*:ACCOUNT_ID_HERE:volume/*", "arn:aws:ec2:*:ACCOUNT_ID_HERE:snapshot/*", "arn:aws:ec2:*:ACCOUNT_ID_HERE:instance/*" ] }, { "Sid": "VisualEditor1", "Effect": "Allow", "Action": [ "ec2:DescribeSnapshotAttribute", "ec2:DescribeVolumes", "ec2:DescribeSnapshots" ], "Resource": "*" } ] } |
Categories: How-To's, Technology Tags: Amazon, AWS, Create, Delete, howto, IAM, JSON, Policy, Snapshot, tips, User, volume
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Author:
erics, July 28th, 2021
SUMMARY: Needed to create an AWS IAM Policy to allow a user access to two buckets and their associated CDN’s in WordPress W3 Total Cache
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{ "Version": "2012-10-17", "Statement": [ { "Sid": "VisualEditor0", "Effect": "Allow", "Action": "s3:ListBucket", "Resource": "arn:aws:s3:::wyzaerd-demo-prod" }, { "Sid": "VisualEditor1", "Effect": "Allow", "Action": [ "s3:PutObject", "s3:GetObject", "s3:DeleteObject", "s3:PutObjectAcl" ], "Resource": "arn:aws:s3:::wyzaerd-demo-prod/*" }, { "Sid": "VisualEditor2", "Effect": "Allow", "Action": "s3:ListBucket", "Resource": "arn:aws:s3:::wyzaerd-demo-dev" }, { "Sid": "VisualEditor3", "Effect": "Allow", "Action": [ "s3:PutObject", "s3:GetObject", "s3:DeleteObject", "s3:PutObjectAcl" ], "Resource": "arn:aws:s3:::wyzaerd-demo-dev/*" }, { "Sid": "VisualEditor4", "Effect": "Allow", "Action": [ "s3:ListAllMyBuckets", "cloudfront:ListDistributions" ], "Resource": "*" } ] } |
Categories: How-To's, Technology Tags: Amazon, AWS, Bucket, CDN, CloudFront, howto, IAM, JSON, Policy, S3, tips, User, W3 Total Cache
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Author:
erics, July 27th, 2021
Current Session:
All Sessions: Add the following to your ~/.vimrc file:
Categories: How-To's, Technology Tags: Automatic, Disable, Disable Visual, howto, Mouse, tips, vi, vim, Visual, Visual Mode
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Author:
erics, July 20th, 2021
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my $count = () = $string =~ /\n/g; |
Categories: How-To's, Technology Tags: Count, howto, Newline, perl, String, tips, Var, Variable
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Author:
erics, July 16th, 2021
PROBLEM: Email delivery to Google was failing with a “Service Unavailable” error:
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relay=aspmx.l.google.com. [IPv6:2607:f8b0:400d:c0c::1a], dsn=5.0.0, stat=Service unavailable |
Note that the network address for the destination is shown as IPv6! That is the root cause of the issue: 1. Sendmail is sending mail from the IPv6 address instead of the IPv4 address 2. Google rejects IPv6 senders without proper reverse […]
Categories: How-To's, Technology Tags: Amazon, Amazzon Linux, AWS, Delivery, DSN, Email, howto, IPv4, IPv6, Linux, make, Restart, SendMail, sendmail.cf, sendmail.mc, service, Service Unavailable, SPF, tips, Unavailable
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Author:
erics, July 14th, 2021
Solution: “Double Quote” your variables!
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shell> myvar="abc def ghi" shell> echo $myvar abc def ghi shell> echo "$myvar" abc def ghi |
See Also: https://stackoverflow.com/questions/22101778/how-to-preserve-line-breaks-when-storing-command-output-to-a-variable
Categories: How-To's, Technology Tags: Capture, Command, Command Output, howto, Keep, line break, Line Breaks, Preserve, Store, Storing, tips, Variable
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Author:
erics, July 8th, 2021
ERROR: Briefly Unavailable for Scheduled Maintenance. Check Back in a Minute CAUSE: WordPress did not complete an action SOLUTION: Either – remove ~/wordpress/.maintenance – edit ~/wordpress/wp-activate.php and set define( ‘WP_INSTALLING’, false );
Categories: How-To's, Technology Tags: howto, Hung, Maintenance, Stuck, tips, WordPress, WP_INSTALLING
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Author:
erics, June 17th, 2021
To update your git user name and email address for all repos:
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git config --global user.name "Your Name" git config --global user.email "yourName@theDomain.com" |
To update your git user name and email address for a specific repo:
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cd repo git config user.name "Your Name" git config user.email "yourName@theDomain.com" |
Categories: How-To's, Technology Tags: Change, Email, git, Global, howto, local, name, Repo, repository, tips, user.email, user.name
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Author:
erics, June 16th, 2021
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my $needle = 'foo'; my $haystack = 'foo foo foo'; my @count = $haystack =~ /$needle/g; my $count = scalar @count; print "$count\n"; |
Should result in 3
Categories: How-To's, Technology Tags: Count, HayStack, howto, Needle, perl, Scalar, String, tips
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Author:
erics, June 10th, 2021
I wanted to change instance type from t2 to t3, but got an error when i went to start the instance:
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An error occurred (InvalidParameterCombination) when calling the StartInstances operation: Enhanced networking with the Elastic Network Adapter (ENA) is required for the 't3.large' instance type. Ensure that your instance 'i-04ae4c6f7bfa96e51' is enabled for ENA. |
I found this AWS docs page: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/enhanced-networking-ena.html Below are the steps I need to follow on AWS Linux 1. Summary Steps Pre-flight tests on t2 modinfo ena -> see “ERROR: modinfo: could not […]
Categories: How-To's, Technology Tags: AWS, AWS Linux, AWS Linux 1, Family, howto, Instance, Instance Family, Instance Type, Linux, t2, t3, tips, Type
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