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    100% /usr/local/sbin/check_reload_status after gateway down

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    • stephenw10S
      stephenw10 Netgate Administrator
      last edited by

      As long as it builds we will try to build it. At some point it's going to become nonviable though.

      1 Reply Last reply Reply Quote 0
      • S
        serbus @adamw
        last edited by

        @adamw

        Hello!

        I have several boxes on 23.05.1 with this problem, and it can run undetected until something goes really bad.

        I run a simple command at Diagnostics -> Command Prompt as a quick check for the issue :

        ps -Ao comm,pcpu | grep "check_reload_status" | awk '$2 > 10'

        No output means check_reload_status is not using more than 10% cpu.

        I setup the mailreport and cron packages to run this command every minute and send me an email if check_reload_status is "overloaded".

        Make sure the report is skippable ("Skip If No Content") in the mailreport config.

        The cron package can be used after setting up or changing the mailreport to specify a more frequent run than once per day.

        John

        Lex parsimoniae

        P 1 Reply Last reply Reply Quote 2
        • stephenw10S
          stephenw10 Netgate Administrator
          last edited by

          Have you tested that in 23.09.1?

          1 Reply Last reply Reply Quote 0
          • P
            perka.home @serbus
            last edited by

            @serbus
            Great suggestion !
            Just set this up on my 23.09.1
            We'll see how it behaves.

            1 Reply Last reply Reply Quote 1
            • adamwA
              adamw @adamw
              last edited by

              @adamw said in 100% /usr/local/sbin/check_reload_status after gateway down:

              Dec 10 10:10:05 netgate kernel: [zone: mbuf_cluster] kern.ipc.nmbclusters limit reached ---> MONITORING STARTED PICKING UP ISSUES
              Dec 10 10:14:16 netgate kernel: sonewconn: pcb 0xe2f8a000 (192.168.8.1:3128 (proto 6)): Listen queue overflow: 193 already in queue awaiting acceptance (1 occurrences), euid 0, rgid 62, jail 0
              Dec 10 10:15:05 netgate kernel: [zone: mbuf_cluster] kern.ipc.nmbclusters limit reached
              Dec 10 10:15:16 netgate kernel: sonewconn: pcb 0xe2f8a000 (192.168.8.1:3128 (proto 6)): Listen queue overflow: 193 already in queue awaiting acceptance (250 occurrences), euid 0, rgid 62, jail 0
              (...)
              Dec 10 11:00:21 netgate kernel: sonewconn: pcb 0xe2f8a000 (192.168.8.1:3128 (proto 6)): Listen queue overflow: 193 already in queue awaiting acceptance (18 occurrences), euid 0, rgid 62, jail 0
              Dec 10 11:00:25 netgate kernel: sonewconn: pcb 0xe4a4f800 (127.0.0.1:3128 (proto 6)): Listen queue overflow: 193 already in queue awaiting acceptance (4 occurrences), euid 0, rgid 62, jail 0
              Dec 10 11:05:06 netgate kernel: [zone: mbuf_cluster] kern.ipc.nmbclusters limit reached
              Dec 10 11:10:06 netgate kernel: [zone: mbuf_cluster] kern.ipc.nmbclusters limit reached
              Dec 10 11:15:07 netgate kernel: [zone: mbuf_cluster] kern.ipc.nmbclusters limit reached
              Dec 10 11:20:07 netgate kernel: [zone: mbuf_cluster] kern.ipc.nmbclusters limit reached ---> FIREWALL BECAME COMPLETELY UNRESPONSIVE AND REQUIRED POWER CYCLING

              Right, so this crash wasn't caused by check_reload_status and high CPU usage.

              It happened again today:

              Dec 13 17:08:04	kernel		[zone: mbuf_cluster] kern.ipc.nmbclusters limit reached
Dec 13 17:10:36	kernel		sonewconn: pcb 0xe2939c00 (192.168.8.1:3128 (proto 6)): Listen queue overflow: 193 already in queue awaiting acceptance (1 occurrences), euid 0, rgid 62, jail 0
Dec 13 17:11:37	kernel		sonewconn: pcb 0xe2939c00 (192.168.8.1:3128 (proto 6)): Listen queue overflow: 193 already in queue awaiting acceptance (998 occurrences), euid 0, rgid 62, jail 0
Dec 13 17:12:37	kernel		sonewconn: pcb 0xe2939c00 (192.168.8.1:3128 (proto 6)): Listen queue overflow: 193 already in queue awaiting acceptance (520 occurrences), euid 0, rgid 62, jail 0
(...)

              This is the trigger:

              export HTTP_PROXY=http://192.168.8.1:3128
export HTTPS_PROXY=http://192.168.8.1:3128
aws s3 cp --profile xxx xxx.gz s3://xxx/xxx.gz --grants read=uri=http://acs.amazonaws.com/groups/global/AllUsers --only-show-errors
upload failed: ./xxx.gz to s3://xxx/xxx.gz HTTPSConnectionPool(host='xxx.s3.amazonaws.com', port=443): Max retries exceeded with url: /xxx.gz?uploadId=2Np0o_30Su5ZrxamVzMYX.LQkPVMog7PupvQTUByny25FOXr7_9Jnz2cXvm0c3xxQ9I6qUPISyhwHhIc63lnlg0nzxiafHs93P_d8qJW3ImmEGyPO3GS0HXRDxcvclWp&partNumber=37 (Caused by ProxyError('Cannot connect to proxy.', ConnectionResetError(104, 'Connection reset by peer')))

              Squid doesn't seem to have logged anything.

              Has anybody seen it before?

              stephenw10S 1 Reply Last reply Reply Quote 0
              • stephenw10S
                stephenw10 Netgate Administrator @adamw
                last edited by

                @adamw said in 100% /usr/local/sbin/check_reload_status after gateway down:

                kernel: [zone: mbuf_cluster] kern.ipc.nmbclusters limit reached

                That is a problem. The firewall has exhausted the mbufs which will impact all traffic through it.

                What does this show for the current available and used mbufs:
                netstat -m

                adamwA 1 Reply Last reply Reply Quote 0
                • adamwA
                  adamw @stephenw10
                  last edited by

                  @stephenw10

                  # netstat -m
3255/1815/5070 mbufs in use (current/cache/total)
1590/940/2530/10035 mbuf clusters in use (current/cache/total/max)
1590/940 mbuf+clusters out of packet secondary zone in use (current/cache)
1/758/759/5017 4k (page size) jumbo clusters in use (current/cache/total/max)
0/0/0/1486 9k jumbo clusters in use (current/cache/total/max)
0/0/0/836 16k jumbo clusters in use (current/cache/total/max)
3997K/5365K/9363K bytes allocated to network (current/cache/total)
0/0/0 requests for mbufs denied (mbufs/clusters/mbuf+clusters)
0/0/0 requests for mbufs delayed (mbufs/clusters/mbuf+clusters)
0/0/0 requests for jumbo clusters delayed (4k/9k/16k)
0/0/0 requests for jumbo clusters denied (4k/9k/16k)
0/6/6656 sfbufs in use (current/peak/max)
0 sendfile syscalls
0 sendfile syscalls completed without I/O request
0 requests for I/O initiated by sendfile
0 pages read by sendfile as part of a request
0 pages were valid at time of a sendfile request
0 pages were valid and substituted to bogus page
0 pages were requested for read ahead by applications
0 pages were read ahead by sendfile
0 times sendfile encountered an already busy page
0 requests for sfbufs denied
0 requests for sfbufs delayed
                  1 Reply Last reply Reply Quote 0
                  • stephenw10S
                    stephenw10 Netgate Administrator
                    last edited by

                    Hmm OK, well that looks fine there.

                    Check the historical mbuf usage in Status > Monitoring.

                    adamwA 1 Reply Last reply Reply Quote 0
                    • adamwA
                      adamw @stephenw10
                      last edited by

                      @stephenw10

                      The 2 "canions" show 2 separate crashes and downtimes:

                      mbuf_clusters_graph.png

                      1 Reply Last reply Reply Quote 0
                      • stephenw10S
                        stephenw10 Netgate Administrator
                        last edited by

                        Hmm, the total never get's near the max though.

                        Check the memory usage over that time. It may be unable to use mbufs if the ram is unavailable.

                        adamwA 1 Reply Last reply Reply Quote 0
                        • adamwA
                          adamw @stephenw10
                          last edited by

                          @stephenw10

                          memory_graph.png

                          1 Reply Last reply Reply Quote 0
                          • stephenw10S
                            stephenw10 Netgate Administrator
                            last edited by

                            Hmm, so using memory but no where near used.
                            Nothing else logged when it fails?

                            adamwA 1 Reply Last reply Reply Quote 0
                            • adamwA
                              adamw @stephenw10
                              last edited by

                              @stephenw10

                              I've retried it today on 23.09.1.
                              A total crash happened again after uploading about 500 MB of data:

                              Dec 27 12:52:42 	kernel 		[zone: mbuf_cluster] kern.ipc.nmbclusters limit reached

                              The culprit is definitely the web proxy (squid 0.4.46) which hasn't logged much:

                              Wednesday, 27 December 2023 12:44:44.299    509 192.168.8.96 TCP_TUNNEL/200 8309 CONNECT mybucket.s3.amazonaws.com:443 - HIER_DIRECT/3.5.20.172 -
Wednesday, 27 December 2023 12:49:19.934    403 192.168.8.96 TCP_TUNNEL/200 8297 CONNECT mybucket.s3.amazonaws.com:443 - HIER_DIRECT/52.217.95.145 -
Wednesday, 27 December 2023 12:56:56.215  29216 192.168.8.96 TCP_TUNNEL/200 14710 CONNECT mybucket.s3.amazonaws.com:443 - HIER_DIRECT/54.231.229.41 -

                              The "aws s3 cp" deals with large files fine when it's forced to bypass proxy.

                              Since it doesn't seem related to check_reload_status, shall I start a new topic and for the last few entries to be removed from here?

                              1 Reply Last reply Reply Quote 0
                              • stephenw10S
                                stephenw10 Netgate Administrator
                                last edited by

                                Yes, should be in a different thread. Unlikely unique to Netgate hardware either.

                                adamwA 1 Reply Last reply Reply Quote 0
                                • adamwA
                                  adamw @stephenw10
                                  last edited by adamw

                                  @stephenw10
                                  moved to: https://forum.netgate.com/topic/185194/aws-s3-cp-crashes-the-firewall-when-using-squid-web-proxy

                                  1 Reply Last reply Reply Quote 1
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