It is possible to change the configuration of a running gitlab-runner by editing the file ~/.gitlab-runner/config.toml.
For example to be able to switch the log_level from ‘info’ to ‘debug’ and back again, you can do so by logging into the gitlab-runner and then editing the file.
The file is reloaded without the need for rebooting the gitlab-runner.
You want to use Google’s Autopilot for your gitlab runners, but your job/builds fail because of low resources (ie ephemeral storage).
You can use a limit range to increase the limits for ephemeral storage or/and memory that will make Google’s autopilot to use them and scale them appropriately.
Create a limit range file like:
apiVersion: v1
kind: LimitRange
metadata:
name: limit-ephemeral-storage
spec:
limits:
- default:
ephemeral-storage: "10Gi"
memory: "16Gi"
defaultRequest:
ephemeral-storage: "10Gi"
memory: "16Gi"
type: ContainerAnd then apply it to your cluster
kubectl -n namespace apply -f limit_range.yamlGet the list of zombie processes:
ps aux | awk '{if($8=="Z") print}'Get the parent process of each of the processes listed above (second column)
ps -o ppid= -p 490392
Kill the parent process from the above output
sudo kill -9 3167559
Trying to create an auto-cluster either using terraform or gcloud cli, and specifying the region name returns the error that ‘Autopilot clusters must be regional clusters.
So with gcloud this is the command and output
kosmas: (master %)$ gcloud container clusters create-auto test-cluster --region=europe-west6-b Note: The Pod address range limits the maximum size of the cluster. Please refer to https://cloud.google.com/kubernetes-engine/docs/how-to/flexible-pod-cidr to learn how to optimize IP address allocation. ERROR: (gcloud.container.clusters.create-auto) ResponseError: code=400, message=Autopilot clusters must be regional clusters.
Using the actual region name (that can be taken from the list of available zones/regions)
gcloud compute zones list NAME REGION STATUS NEXT_MAINTENANCE TURNDOWN_DATE us-east1-b us-east1 UP us-east1-c us-east1 UP ... europe-west6-b europe-west6 UP ...
And using the correct region name (without the b)
gcloud container clusters create-auto test-cluster --region=europe-west6 --verbosity debug ... Created [https://container.googleapis.com/v1/projects/gitlab-runner-343714/zones/europe-west6/clusters/test-cluster]. ... NAME LOCATION MASTER_VERSION MASTER_IP MACHINE_TYPE NODE_VERSION NUM_NODES STATUS test-cluster europe-west6 1.21.6-gke.1503 xxx.xxx.xxx.xxx e2-medium 1.21.6-gke.1503 3 RUNNING
To add a Loki report in Grafana, as for example having a count of the different http_user_agents that have logged in, you can use the following query:
count by (http_agent) (rate({namespace="ingress-nginx",stream="stdout"} |= "https://domain.name.com/session/new" |~ "GET\\s/\\s" | pattern "<ip> - - [<timestamp>] \"<method> <path> <version>\" <result> <_> \"<url>\" \"<http_agent>\" <_>" [$__interval]))You select the source (Loki) and then use the {namespace=”ingress-nginx”,stream=”stdout”} to get the log files from Nginx.
Then you can filter by two conditions:
|= "https://domain.name.com/session/new"
and
|~ "GET\\s/\\s"
Then you can use the pattern parser for the log file in order to get the label
pattern "<ip> - - [<timestamp>] \"<method> <path> <version>\" <result> <_> \"<url>\" \"<http_agent>\" <_>"
<_> is used if we are not interested in getting the field, so everything after http_agent is not analyzed in this case.
Finally use the
count by(http_agent)
to get the data (note that you also need to use the rate with the [$__interval])
When you are trying to add the contents of the Google Cloud credentials json file as a variable in Terraform Cloud you get the error that it cannot contain new lines. In this case you have to use the jq -c option as in:
cat credentials.json | jq -c
If you would like to add the EHLO to the smtp url used in curl you will have to add it at the end of the url (test.example.com), like this:
--url "smtp:/smtp-relay.gmail.com:587/test.example.com"
If you would like to split a large zip file with 7zip, in 1GB files for example, you can use the following
7z -v1g a documents_multipart.7z dir/
You have single line output that contains multiple strings (could be output from a kubectl that gives all the instance names) and you want to convert it to text that can be used as the a variable enclosed by double quotes, one string on one line and separated by commas.
So having the string in a file called input.txt:
a b c
you want to convert it to the following and save it in another file called output.txt
"a",
"b",
"c"
You can use the following:
cat input.txt | tr ' ' '\n' | sed 's/^/"/g' | sed 's/$/",/g' > output.txt
which will first replace the spaces separating the strings to newlines, and then use two passes with sed, in the first adding the first quote, and the second adding the second quote and the comma.
In order to enable the new Grafana Unified alerting, you can add the following to your helm chart’s values.yaml file and upgrade your helm chart with the new values.
grafana.ini:
...
unified_alerting:
enabled: true
alerting:
enabled: false