If you are using awk with a relatively indexed NF variable (number of fields), and get an error like below, this is because the input being parsed does not have the number of fields expected. awk: run time error: negative field index $-1 The root problem is the awk expression was expecting a certain number … Bash: resolving awk run time error, negative field index
If you are getting the following error when invoking an Ansible playbook or any of the Ansible related utilities: ERROR! Invalid callback for stdout specified: yaml This means Ansible is attempting to use the new YAML callback plugin, but cannot find the Ansible Galaxy community.general module. This module is installed by the ‘ansible’ pip module, … Ansible: resolving error “Invalid callback for stdout specified: yaml”
If you are getting the following error when invoking ‘ansible’, ‘ansible-playbook’, ‘ansible-galaxy’ or any of the Ansible related utilities: ERROR: Ansible could not initialize the preferred locale: unsupported locale setting This means Ansible cannot find a locale ending in “.UTF-8”. Check the currently installed locales: $ locale -a Then export the LC_ALL variable to one … Ansible: resolving ‘could not initialize the preferred locale: unsupported locale setting’
If you are attempting to run “terraform init” with a Google Cloud Storage backend and get the following error: Error: Failed to get existing workspaces: querying Cloud Storage failed: storage: bucket doesn’t exist The first check should be that the Google Cloud Storage bucket indeed exists, using gsutil. project_id=myproject-123 gsutil ls -p $project_id If the … Terraform: fixing error “querying Cloud Storage failed: storage: bucket doesn’t exist”
If you are upgrading from Ubuntu 20 to Ubuntu 22 using ‘do-release-upgrade’ and get a fatal error ‘Connection to the the Snap Store failed’, this may be resolved by removing the ‘lxd’ package which is a lightweight container supervisor. sudo /etc/init.d/lxd stop sudo rm -fr /var/lib/lxd sudo dpkg –force depends -P lxd; sudo dpkg –force … Ubuntu: ‘Connection to the Snap Store failed’ during upgrade from Ubuntu 20 to 22
If you have warning messages coming from apt about an invalid signature verification and EXPKEYSIG, then it is likely that a signing key for one of the remote apt repo has expired. Below is an example coming from an expired podman package at the “download.opensuse.org” repo. W: An error occurred during the signature verification. The … Ubuntu: fixing apt invalid signature warnings
If you delete the entire nginx namespace and reinstall again via helm chart, your nginx admission controller may throw a “x509 certificate signed by unknown authority” message when you attempt to create an nginx ingress. This will happen regardless if the ingress is using http only or secure https. And also whether or not the … Kubernetes: ingress-nginx-controller-admission error, x509 certificate signed by unknown authority
If you are using a Terraform “for_each” and get the error message below, it is most likely because you are sending an ordered list instead of an unordered set (which is not supported at the resource level). The given “for_each” argument value is unsuitable: the “for_each” argument must be a map, or set of strings, … Terraform: converting ordered lists to sets to avoid errors with for_each
By default, ‘qemu-image info’ will throw an error if it cannot get exclusive access to the disk file it is trying to read. $ sudo qemu-img info mydisk.qcow2 qemu-img: Could not open ‘mydisk.qcow2’: Failed to get shared “write” lock Is another process using the image [mydisk.qcow2]? Although it is not listed in the man page, … KVM: running qemu-img info without exclusive access using force-share flag
If you attempt an “apt-get update” and get a signature verification error from “dl.yarnpkg.com”, the problem is most likely an expired key. This can be resolved by reloading the new public key from the site: # add latest key curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add – # try refresh again sudo apt-get update Below … Ubuntu: apt-get error, yarn signature verification
Nginx is a powerful application level proxy server. Whether for troubleshooting or analysis, enabling log levels and custom formats for the access/error logs is a common requirement. Error Logs By default, only messages in the error category are logged. If you want to enable more details, then modify nginx.conf like: error_log file [level] Enabling debug … Nginx: Custom access log format and error levels
Enabling verbose logs for an AppDynamics machine or database agents can be invaluable for troubleshooting connectivity or network issues. Luckily, this is easily done by editing the conf/logging/log4j.xml file. By default, only the error level messages are sent to the logs: <root> <priority value=”error”/> <appender-ref ref=”FileAppender”/> </root> But you can modify this so that debug … AppDynamics: Enabling verbose debug logs for Agents