# Sst-idle-timeout killing sst after the donor has transferred all the data **URL:** \ **Category:** Percona XtraDB Cluster 8.x\ **Tags:** mysql, percona\ **Created:** [April 15, 2026, 7:00am UTC](https://forums.percona.com/t/sst-idle-timeout-killing-sst-after-the-donor-has-transferred-all-the-data/40634 "2026-04-15T07:00:57Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Yash\_Daga](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/yash_daga/32/22569_2.png) [@Yash\_Daga](https://forums.percona.com/u/Yash_Daga)\ **Post date:** [April 15, 2026, 7:00am UTC](https://forums.percona.com/t/sst-idle-timeout-killing-sst-after-the-donor-has-transferred-all-the-data/40634/1 "2026-04-15T07:00:57Z")
Setup: 3 node percona pxc cluster with the following percona images Operator: 1.19.0 Cluster: 8.0.42-33.1 Xtrabackup: 8.0.35-34.1 I was trying triggering sst transfer after deleting pvc’s for one of the node, but the sst failing after donor sends all the data, because of sst-idle-timeout, causing joiner to fail to reach synced state and re triggering the sst again. I was confused on why do we need the sst connection to open once all data is already sent? joiner logs: ```auto joiner: => Rate:[245MiB/s] Avg:[242MiB/s] Elapsed:1:08:10 Bytes: 967GiB :1:06:10 Bytes: 938GiB joiner: => Rate:[242MiB/s] Avg:[242MiB/s] Elapsed:1:10:20 Bytes: 998GiB 242MiB/s] Elapsed:1:08:20 Bytes: 969GiB 2026-04-15T06:18:45.641528Z 0 [Note] [MY-000000] [Galera] 0.0 (mysqlcluster-pxc-1): State transfer to 2.0 (mysqlcluster-pxc-2) complete. 2026-04-15T06:18:45.641766Z 0 [Note] [MY-000000] [Galera] Member 0.0 (mysqlcluster-pxc-1) synced with group. ERR: *******************FATAL ERROR********************** 30 Bytes: 1011GiB 246MiB/s] Avg:[242MiB/s] Elapsed:1:10:30 Bytes: 1000GiB 2026-04-15T06:20:58.852365Z 0 [ERROR] [MY-000000] [WSREP-SST] Killing SST (889) with SIGKILL after stalling for 120 seconds. 2026-04-15T06:20:58.852370Z 0 [ERROR] [MY-000000] [WSREP-SST] Within the last 120 seconds (defined by the sst-idle-timeout variable), 2026-04-15T06:20:58.852384Z 0 [ERROR] [MY-000000] [WSREP-SST] the SST process on the joiner (this node) has not received any data from the donor. 2026-04-15T06:20:58.852399Z 0 [ERROR] [MY-000000] [WSREP-SST] This error could be caused by broken network connectivity between 2026-04-15T06:20:58.852413Z 0 [ERROR] [MY-000000] [WSREP-SST] the donor and the joiner (this node). 2026-04-15T06:20:58.852426Z 0 [ERROR] [MY-000000] [WSREP-SST] Check the network connection and restart the joiner node. 2026-04-15T06:20:58.852440Z 0 [ERROR] [MY-000000] [WSREP-SST] Line 324 2026-04-15T06:20:58.852453Z 0 [ERROR] [MY-000000] [WSREP-SST] ****************************************************** 2026-04-15T06:20:58.856608Z 0 [Note] [MY-000000] [WSREP-SST] /usr/bin/wsrep_sst_xtrabackup-v2: line 191: 891 Killed socat -u openssl-listen:4444,reuseaddr,cert=/etc/mysql/ssl-internal/tls.crt,key=/etc/mysql/ssl-internal/tls.key,cafile=/etc/mysql/ssl-internal/ca.crt,verify=1,retry=30 stdio 2026-04-15T06:20:58.856619Z 0 [Note] [MY-000000] [WSREP-SST] 892 | pv -f -i 10 -N joiner -F '%N => Rate:%r Avg:%a Elapsed:%t %e Bytes: %b %p' 2026-04-15T06:20:58.856623Z 0 [Note] [MY-000000] [WSREP-SST] 893 | /usr/bin/pxc_extra/pxb-8.0/bin/xbstream -x --decompress 2026-04-15T06:20:58.856808Z 0 [ERROR] [MY-000000] [WSREP-SST] *******************FATAL ERROR********************** 2026-04-15T06:20:58.856827Z 0 [ERROR] [MY-000000] [WSREP-SST] SST transfer has been interrupted. 2026-04-15T06:20:58.856849Z 0 [ERROR] [MY-000000] [WSREP-SST] Check if the log above indicates the interruption 2026-04-15T06:20:58.856887Z 0 [ERROR] [MY-000000] [WSREP-SST] was related to sst-idle-timeout configuration variable. 2026-04-15T06:20:58.856920Z 0 [ERROR] [MY-000000] [WSREP-SST] exit codes: 137 137 137 2026-04-15T06:20:58.856926Z 0 [ERROR] [MY-000000] [WSREP-SST] Line 1377 2026-04-15T06:20:58.856931Z 0 [ERROR] [MY-000000] [WSREP-SST] ****************************************************** ``` donor logs: ```auto donor: => Rate:[243MiB/s] Avg:[242MiB/s] Elapsed:1:10:30 ETA 0:00:00s] Avg:[242MiB/s] Elapsed:1:08:20 ETA 0:00:00 donor: => Rate:[241MiB/s] Avg:[241MiB/s] Elapsed:1:11:25 2026-04-15T06:18:45.636340Z 0 [Note] [MY-000000] [Galera] SST sent: cbbf83fe-37ee-11f1-8643-76be332e1b50:103529 2026-04-15T06:18:45.636362Z 0 [Note] [MY-000000] [WSREP] Server status change donor -> joined 2026-04-15T06:18:45.644024Z 0 [Note] [MY-000000] [Galera] 0.0 (mysqlcluster-pxc-1): State transfer to 2.0 (mysqlcluster-pxc-2) complete. 2026-04-15T06:18:45.644047Z 0 [Note] [MY-000000] [Galera] Shifting DONOR/DESYNCED -> JOINED (TO: 103529) 2026-04-15T06:18:45.644088Z 0 [Note] [MY-000000] [Galera] Processing event queue:... -nan% (0/0 events) complete. 2026-04-15T06:18:45.644268Z 0 [Note] [MY-000000] [Galera] Member 0.0 (mysqlcluster-pxc-1) synced with group. 2026-04-15T06:18:45.644279Z 0 [Note] [MY-000000] [Galera] Processing event queue:... 100.0% (1/1 events) complete. 2026-04-15T06:18:45.644285Z 0 [Note] [MY-000000] [Galera] Shifting JOINED -> SYNCED (TO: 103529) 2026-04-15T06:18:45.644320Z 13 [Note] [MY-000000] [Galera] Server mysqlcluster-pxc-1 synced with group 2026-04-15T06:18:45.644346Z 13 [Note] [MY-000000] [WSREP] Server status change joined -> synced 2026-04-15T06:18:45.644352Z 13 [Note] [MY-000000] [WSREP] Synchronized with group, ready for connections ``` ---
**Author:** ![hai.nguyen](https://avatars.discourse-cdn.com/v4/letter/h/41988e/32.png) [@hai.nguyen](https://forums.percona.com/u/hai.nguyen)\ **Post date:** [April 15, 2026, 8:10am UTC](https://forums.percona.com/t/sst-idle-timeout-killing-sst-after-the-donor-has-transferred-all-the-data/40634/2 "2026-04-15T08:10:17Z")
Hi. Your issue looks similar to this bug report - [PXC-4392](https://perconadev.atlassian.net/browse/PXC-4392). The fix for this issue was implemented in xtrabackup version 8.0.35-34 - [PXB-3470](https://perconadev.atlassian.net/browse/PXB-3470). Note that SST uses the xtrabackup binary bundled with PXC, and is not related to the xtrabackup image that you set for the operator. PXC 8.0.42-33.1 uses xtrabackup version 8.0.35-31 → affected by the bug above PXC 8.0.44-35.1 uses xtrabackup version 8.0.35-34 → fixed. Please try upgrading to PXC 8.0.44-35.1 or later. ---
**Author:** ![Yash\_Daga](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/yash_daga/32/22569_2.png) [@Yash\_Daga](https://forums.percona.com/u/Yash_Daga)\ **Post date:** [April 15, 2026, 8:46am UTC](https://forums.percona.com/t/sst-idle-timeout-killing-sst-after-the-donor-has-transferred-all-the-data/40634/3 "2026-04-15T08:46:56Z")
Understood, thanks a lot for quick response!