RedHat - check installed Apache httpd and latest version available

1. Check installed and latest version:
yum list httpd

Output:


Installed Packages                                                                  2.4.6-45.el7_3.4                                                                                          

Available Packages
 2.4.6-88.el7

2. List ChangeLog:

rpm -q --changelog httpd


OUTPUT:

* Mon May 28 2018 Luboš Uhliarik <luhliari@redhat.com> - 2.4.6-80.1
- Resolves: #1560609 - httpd: active connections being terminated when httpd
  gets gracefully stopped/restarted, GracefulShutdownTimeout is not being
  honored

* Mon Jan 08 2018 Luboš Uhliarik <luhliari@redhat.com> - 2.4.6-80
- Related: #1288395 - httpd segfault when logrotate invoked

* Wed Nov 01 2017 Luboš Uhliarik <luhliari@redhat.com> - 2.4.6-79
- Resolves: #1274890 - mod_ssl config: tighten defaults

....

Splunk Chart Legend: Fix start and end truncation

In order to avoid annoying ... punctuation when displaying a chart legend in Splunk, please follow next steps:

1. Edit the report/Dashboard and View Source

2. Look for the following patterns 

<option name="charting.legend.labelStyle.overflowMode">ellipsisStart</option>
OR
<option name="charting.legend.labelStyle.overflowMode">ellipsisEnd</option>

3. Replace with

<option name="charting.legend.labelStyle.overflowMode">ellipsisNone</option>

curl to disable/stop AEM component from under /system/console/components

Disable:
curl -d "action=disable" -u admin:"pass" -X POST http://IP:Port/system/console/components/component-name


Enable:
curl -d "action=enable" -u admin:"pass+" -X POST http://IP:Port/system/console/components/component-name

AWS CLI - Show snapshots for volume

1. List all snapshots for specific volume:
aws ec2 describe-snapshots --filters "Name=volume-id, Values=vol-xxxxxx"


2. If in progress, you can check following for status after getting snapshot-id at step 1:
aws ec2 describe-snapshots --snapshot-id snap-xxxx


You shall get something like the below:

...


            "VolumeId": "vol-xxxxx",
            "State": "pending",
            "VolumeSize": 900,
            "StartTime": "2019-06-30T21:26:16.662Z",
            "Progress": "46%",
            "OwnerId": "xxxx",
            "SnapshotId": "snap-xxxxx"
...

Check AEM Run Mode

Navigate to the below:

/system/console/status-slingsettings

and get proper values under 

Run Modes = [crx3tar-nofds, stage, crx3, nosamplecontent, author]

Remove Keystore from AEM User

For example, if needed to remove Dynamic Media Replication user keystore, just delete from CRX/DE the keystore from /home/users/system/dam/dynamic-media-replication.

Automatic Restart of OSGI bundle

1. Following script can be used

pswd=`pass OSGI-admin`
echo -e `date`
echo -e "start script"
echo -e "stop bundle"
curl -u admin:"$pswd" http://OSGI-IP:Port/system/console/bundles/bundle.jsp -F action=stop
echo -e ""
echo -e "Waiting for 3 seconds"
sleep 3
echo -e "start bundle"
curl -u admin:"$pswd" http://OSGI-IP:Port/system/console/bundles/bundle.jsp -F action=start
echo -e ""
echo -e `date`
echo -e ""
echo -e ""
echo -e ""

2. Add above script to crontab

crontab -e

Add following line to run every 4 hours:
0 */4 * * * /home/user/bundle-script.sh >> /home/user/history-bundle-script.log

In history-bundle-script.log you shall get logged all events.