F5 DNS/GTM External Monitor(EAV) with SNI support and response code check
I have used this monitor for XC Distributed Cloud as the HTTP LB share by default the same tenant IP address and SNI support is needed. You can order dedicated public IP addresses for each HTTP LB and enable "Default Load Balancer" ( https://my.f5.com/manage/s/article/K000152902 ) option but it will cost you extra 😉 The script is a modified version of External https health monitor for SNI-enabled pool as to handle response codes and to set the SNI globally for the entire pool and it's members. If you are uploading from Windows machine see External monitor fails to run as you could hit the bug. This could be needed for F5 DNS/GTM below 16.1 that do not support SNI in HTTPS monitors. The only mandatory variable is "SNI" that should be set in the external monitor config that references this uploaded bash script. The "URI" variable by default is set to "/" and "$2" variable by default is empty or 443, the default expected response code 200. #!/bin/sh # External monitoring script for checking HTTP status code # $1 = IP (::ffff:nnn.nnn.nnn.nnn notation or hostname) # $2 = port (optional; defaults to 443 if not provided) # Default SNI to IP if not explicitly provided node_ip=$(echo "$1" | sed 's/::ffff://') # Remove IPv6 compatibility prefix SNI=${SNI:-"$node_ip"} # Assign sanitized IP to SNI # Default variables MON_NAME=${MON_NAME:-"MyExtMon$$"} pidfile="/var/run/$MON_NAME.$1..$2.pid" # PID file path DEBUG=${DEBUG:-0} # Enable debugging if set to 1 EXPECTED_STATUS=${EXPECTED_STATUS:-200} # Default HTTP status code to 200 URI=${URI:-"/"} # Default URI DEFAULT_PORT=443 # Default port (used if $2 is unset) # Set port to default if $2 is not provided if [ -z "${2}" ]; then PORT=${DEFAULT_PORT} else PORT=${2} fi # Kill old process if pidfile exists if [ -f "$pidfile" ]; then kill -9 -$(cat "$pidfile") > /dev/null 2>&1 fi echo "$$" > "$pidfile" # Perform the HTTP(S) request via single curl (fetch status code only) status_code=$(curl -s -o /dev/null -w '%{http_code}' --connect-timeout 5 --resolve "${SNI}:${PORT}:${node_ip}" "https://${SNI}:${PORT}${URI}") # Cleanup rm -f "$pidfile" > /dev/null 2>&1 # Output server status based on HTTP status code match if [ "$status_code" -eq "$EXPECTED_STATUS" ]; then echo "up" else echo "down" fi # Debugging if [ "$DEBUG" -eq 1 ]; then echo "Debugging on..." echo "SNI=${SNI}" echo "URI=${URI}" echo "IP=${node_ip}" echo "PORT=${PORT}" echo "MON_NAME=${MON_NAME}" echo "STATUS_CODE=${status_code}" echo "EXPECTED_STATUS=${EXPECTED_STATUS}" echo "curl -s -o /dev/null -w '%{http_code}' --connect-timeout 5 --resolve ${SNI}:${PORT}:${node_ip} https://${SNI}:${PORT}${URI}" fi
Export GTM/DNS Configuration in CSV - tmsh cli script
Problem this snippet solves: This is a simple cli script used to collect all the WideIP, LB Method, Status, State, Pool Name, Pool LB, Pool Members, Pool Fall back, Last Resort pool info in CSV format. A sample output would be like below, One can customize the code to extract other fields available too. Check out my other codeshare of LTM report. Note: The codeshare may get multiple version, use the latest version alone. The reason to keep the other versions is for end users to understand & compare, thus helping them to modify to their own requirements. Hope it helps. How to use this snippet: Login to the GTM/DNS, create your script by running the below commands and paste the code provided in snippet, tmsh create cli script gtm-config-parser Delete the proc blocks, so it looks something like below, create script gtm-config-parser { ## PASTE THE CODE HERE ## } and paste the code provided in the snippet. Note: When you paste it, the indentation may be realigned, it shouldn't cause any errors, but the list output would show improperly aligned. Feel free to delete the tab spaces in the code snippet & paste it while creating, so indentation is aligned properly. And you can run the script like below, tmsh run cli script gtm-config-parser > /var/tmp/gtm-config-parser-output.csv And get the output from the saved file, open it on excel. Format it & use it for audit & reporting. cat /var/tmp/gtm-config-parser-output.csv Feel free to add more elements as per your requirements. For version 13.x & higher, there requires a small change in the code. Refer the comments section. Thanks to @azblaster Code : proc script::run {} { puts "WIP,LB-MODE,WIP-STATUS,WIP-STATE,POOL-NAME,POOL-LB,POOL-MEMBERS,POOL-FB,LASTRESORT-POOL" foreach { obj } [tmsh::get_config gtm wideip all-properties] { set wipname [tmsh::get_name $obj] set wippools [tmsh::get_field_value $obj pools] set lbmode [tmsh::get_field_value $obj "pool-lb-mode"] set lastresort [tmsh::get_field_value $obj "last-resort-pool"] foreach { status } [tmsh::get_status gtm wideip $wipname] { set wipstatus [tmsh::get_field_value $status "status.availability-state"] set wipstate [tmsh::get_field_value $status "status.enabled-state"] } foreach wippool $wippools { set pool_name [tmsh::get_name $wippool] set pool_configs [tmsh::get_config /gtm pool $pool_name all-properties] foreach pool_config $pool_configs { set pool_lb [tmsh::get_field_value $pool_config "load-balancing-mode"] set pool_fb [tmsh::get_field_value $pool_config "fallback-mode"] if { [catch { set member_name [tmsh::get_field_value $pool_config "members" ]} err] } { set pool_member $err } else { set pool_member "" set member_name [tmsh::get_field_value $pool_config "members"] foreach member $member_name { append pool_member "[lindex $member 1] " } } puts "$wipname,$lbmode,$wipstatus,$wipstate,$pool_name,$pool_lb,$pool_member,$pool_fb,$lastresort" } } } } Tested this on version: 11.6Export GTM/DNS Virtual Servers Configuration in CSV - tmsh cli script
Problem this snippet solves: This is a simple cli script used to collect all the virtual-servers name, its destination created in a server or ltm server. A sample output would be like below, How to use this snippet: This is similar to my other share - https://devcentral.f5.com/s/articles/Export-GTM-DNS-Configuration-in-CSV-tmsh-cli-script Login to the GTM/DNS, create your script by running the below commands and paste the code provided in snippet, tmsh create cli script gtm-vs Delete the proc blocks, so it looks something like below, create script gtm-vs { ## PASTE THE CODE HERE ## } and paste the code provided in the snippet. Note: When you paste it, the indentation may be realigned, it shouldn't cause any errors, but the list output would show improperly aligned. Feel free to delete the tab spaces in the code snippet & paste it while creating, so indentation is aligned properly. And you can run the script like below, tmsh run cli script gtm-vs > /var/tmp/gtm-vs-output.csv And get the output from the saved file, open it on excel. Format it & use it for audit & reporting. cat /var/tmp/gtm-vs-output.csv Feel free to add more elements as per your requirements. Code : proc script::run {} { puts "Server,Virtual-Server,Destination" foreach { obj } [tmsh::get_config gtm server] { set server [tmsh::get_name $obj] foreach { vss } [tmsh::get_config gtm server $server virtual-servers] { set vs_set [tmsh::get_field_value $vss virtual-servers] foreach vs $vs_set { set vs_name [tmsh::get_name $vs] puts $server,$vs_name,[tmsh::get_field_value $vs destination] } } } } Tested this on version: 13.1
