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Preet_pk's avatar
Preet_pk
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Apr 30, 2025

F5 GUI keeps on restarting very 1 min

Hi All, We are facing an issue with F5, as BIG-IP keeps on restarting every 1 minute. Please let me know how to troubleshoot this issue & steps to resolve this issue without any business impacting t...
application delivery
Preet_pk's avatar
Preet_pk
Icon for Cirrus rankCirrus
Apr 30, 2025

Below are the logs i can see.

root@secondary:Standby:In Sync] config # tail -f /var/log/httpd/httpd_errors
May  1 09:54:14 secondary.mafgroup.local err httpd[2785]: [proxy:error] [pid 2785] AH00940: AJP: disabled connection for (localhost)
May  1 09:55:43 secondary.mafgroup.local err httpd[3373]: [proxy_ajp:error] [pid 3373] [client 10.110.110.120:57952] AH00992: ajp_read_header: ajp_ilink_receive failed, referer: https://10.46.11.52/xui/
May  1 09:55:43 secondary.mafgroup.local err httpd[3373]: [proxy_ajp:error] [pid 3373] (120006)APR does not understand this error code: [client 10.110.110.120:57952] AH00878: read response failed from 127.0.0.1:8009 (localhost), referer: https://10.46.11.52/xui/
May  1 09:57:26 secondary.mafgroup.local err httpd[2840]: [proxy_ajp:error] [pid 2840] [client 10.110.110.120:58050] AH00992: ajp_read_header: ajp_ilink_receive failed, referer: https://10.46.11.52/xui/
May  1 09:57:26 secondary.mafgroup.local err httpd[2840]: [proxy_ajp:error] [pid 2840] (120006)APR does not understand this error code: [client 10.110.110.120:58050] AH00878: read response failed from 127.0.0.1:8009 (localhost), referer: https://10.46.11.52/xui/
May  1 09:58:53 secondary.mafgroup.local err httpd[2784]: [proxy_ajp:error] [pid 2784] [client 10.110.110.120:58516] AH00992: ajp_read_header: ajp_ilink_receive failed, referer: https://10.46.11.52/xui/
May  1 09:58:53 secondary.mafgroup.local err httpd[2784]: [proxy_ajp:error] [pid 2784] (120006)APR does not understand this error code: [client 10.110.110.120:58516] AH00878: read response failed from 127.0.0.1:8009 (localhost), referer: https://10.46.11.52/xui/
May  1 09:59:02 secondary.mafgroup.local warning httpd[2784]: [auth_pam:warn] [pid 2784] [client 10.110.110.120:58537] AUTHCACHE Error processing cookie CC5W2GVS4HF5AQC22IOI5SJJ5J - Failed Read: User, referer: https://10.46.11.52/xui/framework/css/xui.css?ver=15.1.5.1.0.0.14
May  1 09:59:02 secondary.mafgroup.local warning httpd[2784]: [auth_pam:warn] [pid 2784] [client 10.110.110.120:58537] AUTHCACHE Error processing cookie JMA4W5Z2RMZ4AK4WAFSF7KY2OI - Failed Read: User, referer: https://10.46.11.52/xui/framework/css/xui.css?ver=15.1.5.1.0.0.14
May  1 09:59:02 secondary.mafgroup.local warning httpd[2784]: [auth_pam:warn] [pid 2784] [client 10.110.110.120:58537] AUTHCACHE Error processing cookie T65HKU7VX63GTPUFLJEBHT6RUU - Failed Read: User, referer: https://10.46.11.52/xui/framework/css/xui.css?ver=15.1.5.1.0.0.14