While Loops For Holistic Logging

while true
do
    echo -e "$(date '+TIME:%Y-%m-%d-%H:%M:%S')\n $(docker stats --no-stream)" | tee -a docker_stats_--no-stream 
done

The next command is to capture the output of docker info:

while true
do
  echo -e "$(date '+TIME:%Y-%m-%d-%H:%M:%S')\n $(docker info)" | tee -a docker_info
done

Again, created another tmux window and wanted to capture the output of docker ps -a.

while true
do
  echo -e "$(date '+TIME:%Y-%m-%d-%H:%M:%S')\n $(docker ps -a)" | tee -a docker_ps_-a
done

Command to capture the running processes.

while true
do
  echo -e "$(date '+TIME:%Y-%m-%d-%H:%M:%S')\n $(ps aux)" | tee -a ps_aux
done

Capture the output of top.

while true
do
  echo -e "$(date '+TIME:%Y-%m-%d-%H:%M:%S')\n $(top -b -n1)" | tee -a top_output
done

Installed the sysstat package, to then be able to use mpstat:
```
sudo dnf install -y sysstat
```

Command to capture the mpstat output for each processor core.

while true
do
  echo -e "$(date '+TIME:%Y-%m-%d-%H:%M:%S')\n $(mpstat -P ALL)" | tee -a mpstat
done

Command to capture iostat output.

while true
do
  echo -e "$(date '+TIME:%Y-%m-%d-%H:%M:%S')\n $(iostat)" | tee -a iostat
done

Run docker inspect on select containers to see CPU and memory usage.

while true
do
  echo -e "$(date '+TIME:%Y-%m-%d-%H:%M:%S')\n $(docker inspect <YOUR_CONTAINER_NAME_HERE>)" | tee -a docker_inspect_<YOUR_CONTAINER_NAME_HERE>
done

In addition, alongside the docker inspect command, take regular readings of the same container’s cpuacct.usage_all file.

while true
do
  echo -e "$(date '+TIME:%Y-%m-%d-%H:%M:%S')\n $(cat /sys/fs/cgroup/cpu/docker/<YOUR_CONTAINER_ID_HERE>/cpuacct.usage_all)" | tee -a cpuacct.usage_all_<YOUR_CONTAINER_ID_HERE>
done

Capturing memory output.

while true
do
  echo -e "$(date '+TIME:%Y-%m-%d-%H:%M:%S')\n $(free -h)" | tee -a free_-h
done

Continuously capture the output of dmesg.
```
dmesg -T --follow > dmesg_output.log
```

Write the output of ethtool -S to a file.

while true
do
  echo -e "$(date '+TIME:%Y-%m-%d-%H:%M:%S')\n $(ethtool -S <YOUR_INTERFACE_HERE>)" | tee -a ethtool_-s_<YOUR_INTERFACE_HERE>
done

Output CPU sar readings to a file.
```
sar -u ALL 1 | tee -a sar_cpu
```
Output memory sar readings to a file.
```
sar -r 1 | tee -a sar_memory
```
Output swap sar readings to a file.
```
sar -S 1 | tee -a sar_swap
```
Output I/O sar readings to a file.
```
sar -b 1 | tee -a sar_io
```

Record IO for individual block devices.

sar -p -d 1 | tee -a sar_block_device_io

Record context switches per second.
```
sar -w 1 | tee -a sar_context_switches
```

Note run queue and load average.

sar -q 1 | tee -a sar_run_queue_load_average

Check network statistics.

sar -n ALL 1 | tee -a sar_network_statistics