# \#bugs **URL:** https://forums.percona.com/tag/bugs/12.md [Latest](https://forums.percona.com/latest.md) · [Categories](https://forums.percona.com/categories.md) · [Tags](https://forums.percona.com/tags.md) --- ## [PSMDB 8.0.17 aarch64 SIGSEGV in WiredTiger checkpoint on Linux kernel 6.19 (Fedora CoreOS 43)](https://forums.percona.com/t/psmdb-8-0-17-aarch64-sigsegv-in-wiredtiger-checkpoint-on-linux-kernel-6-19-fedora-coreos-43/40644)
**Author:** [@gorokhov.inc](https://forums.percona.com/u/gorokhov.inc)\ **Replies:** 3\ **Last updated:** [April 20, 2026, 1:28pm UTC](https://forums.percona.com/t/psmdb-8-0-17-aarch64-sigsegv-in-wiredtiger-checkpoint-on-linux-kernel-6-19-fedora-coreos-43/40644 "2026-04-20T13:28:29Z")
Summary Percona Server for MongoDB 8.0.17 (aarch64) crashes with SIGSEGV approximately 60 seconds after startup. The crash occurs in a background thread during what appears to be the first WiredTiger checkpoint. No erro… --- ## [BUG: component\_percona\_udf Does Not Register Any UDFs on Percona Server 8.4.7‑7 (EL9)](https://forums.percona.com/t/bug-component-percona-udf-does-not-register-any-udfs-on-percona-server-8-4-7-7-el9/40305)
**Author:** [@mikepalmergee](https://forums.percona.com/u/mikepalmergee)\ **Replies:** 1\ **Last updated:** [March 1, 2026, 9:09pm UTC](https://forums.percona.com/t/bug-component-percona-udf-does-not-register-any-udfs-on-percona-server-8-4-7-7-el9/40305 "2026-03-01T21:09:52Z")
BUG: component\_percona\_udf Does Not Register Any UDFs on Percona Server 8.4.7‑7 (EL9) Missing component\_udf\_registration Component in EL9 Packaging I believe I’ve encountered a packaging bug in Percona Server for MySQL 8… --- ## [Libdbd-mysql-perl 1:5.013-1.noble breaks DBD::mysql after apt upgrade on Ubuntu 24.04](https://forums.percona.com/t/libdbd-mysql-perl-1-5-013-1-noble-breaks-dbd-mysql-after-apt-upgrade-on-ubuntu-24-04/40080)
**Author:** [@Milan](https://forums.percona.com/u/Milan)\ **Replies:** 6\ **Last updated:** [February 19, 2026, 11:23pm UTC](https://forums.percona.com/t/libdbd-mysql-perl-1-5-013-1-noble-breaks-dbd-mysql-after-apt-upgrade-on-ubuntu-24-04/40080 "2026-02-19T23:23:29Z")
We use Perl to query a Percona Server database via DBD::mysql. This stopped working yesterday after normal apt upgrade and broke our production system. It shows the package libdbd-mysql-perl 1:5.013-1.noble from Percon… --- ## [Cross-cluster restore fails with "backup meta: not found" error despite metadata existing in S3](https://forums.percona.com/t/cross-cluster-restore-fails-with-backup-meta-not-found-error-despite-metadata-existing-in-s3/40040)
**Author:** [@Lim\_Les](https://forums.percona.com/u/Lim_Les)\ **Replies:** 14\ **Last updated:** [January 19, 2026, 6:23pm UTC](https://forums.percona.com/t/cross-cluster-restore-fails-with-backup-meta-not-found-error-despite-metadata-existing-in-s3/40040 "2026-01-19T18:23:45Z")
Description: When attempting to restore an incremental backup using Percona Server MongoDB Operator in a cross-cluster restore scenario, the restore operation runs for a period of time, then the status becomes empty, fol… --- ## [ProxySQL Admin Tool should handle parallel calls more robust](https://forums.percona.com/t/proxysql-admin-tool-should-handle-parallel-calls-more-robust/39335)
**Author:** [@kiskele](https://forums.percona.com/u/kiskele)\ **Replies:** 2\ **Last updated:** [September 25, 2025, 5:45am UTC](https://forums.percona.com/t/proxysql-admin-tool-should-handle-parallel-calls-more-robust/39335 "2025-09-25T05:45:09Z")
Percona XtraDB Operator calls proxysql-admin –syncusers –add-query-rules every 5 seconds. proxysql-admin begins with calling proxysql\_exec "$LINENO" "SAVE MYSQL SERVERS FROM RUNTIME" proxysql\_exec "$LINENO" "SAVE MYSQL… --- ## [Pt-archiver When archiving data, when encountering table data containing line breaks, an abnormal export occurs](https://forums.percona.com/t/pt-archiver-when-archiving-data-when-encountering-table-data-containing-line-breaks-an-abnormal-export-occurs/39285)
**Author:** [@baker](https://forums.percona.com/u/baker)\ **Replies:** 5\ **Last updated:** [September 16, 2025, 11:32am UTC](https://forums.percona.com/t/pt-archiver-when-archiving-data-when-encountering-table-data-containing-line-breaks-an-abnormal-export-occurs/39285 "2025-09-16T11:32:18Z")
I encountered a peculiar exception while archiving data using the pt-archiver tool. After investigation, I discovered that a varchar field in my source table contained a line break in its data. This altered the original … --- ## [When pt-archiver archives MySQL json fields, garbled characters appear](https://forums.percona.com/t/when-pt-archiver-archives-mysql-json-fields-garbled-characters-appear/39307)
**Author:** [@baker](https://forums.percona.com/u/baker)\ **Replies:** 2\ **Last updated:** [September 16, 2025, 4:50am UTC](https://forums.percona.com/t/when-pt-archiver-archives-mysql-json-fields-garbled-characters-appear/39307 "2025-09-16T04:50:23Z")
The scenario is as follows: This is the command executed: pt-archiver --limit 5000 --txn-size 5000 --progress 5000 --statistics --bulk-insert --charset=utf8mb4 --no-check-charset --no-check-columns Table character set… --- ## [Gosu binary in arm64 image](https://forums.percona.com/t/gosu-binary-in-arm64-image/38549)
**Author:** [@scheibling](https://forums.percona.com/u/scheibling)\ **Replies:** 1\ **Last updated:** [July 4, 2025, 10:45am UTC](https://forums.percona.com/t/gosu-binary-in-arm64-image/38549 "2025-07-04T10:45:35Z")
It looks like there are some issues with the container image builds (percona/percona-distribution-postgresql), where the AMD64 version of gosu is included in the ARM64 images leading to the container not starting up prop… --- ## [Percona Mongodb operator restarts with error "fatal error: concurrent map read and map write"](https://forums.percona.com/t/percona-mongodb-operator-restarts-with-error-fatal-error-concurrent-map-read-and-map-write/35781)
**Author:** [@Michal\_Bartnicki](https://forums.percona.com/u/Michal_Bartnicki)\ **Replies:** 2\ **Last updated:** [December 23, 2024, 6:41pm UTC](https://forums.percona.com/t/percona-mongodb-operator-restarts-with-error-fatal-error-concurrent-map-read-and-map-write/35781 "2024-12-23T18:41:08Z")
Description: Today I’ve noticed that the Percona Operator for Mongodb restarted ~200 times on my Kubernetes cluster. It runs 1 backup job and is configured as a replica set of size 3 with sharding disabled. The error I… --- ## [I submitted a PR to fix the data display issue in Grafana](https://forums.percona.com/t/i-submitted-a-pr-to-fix-the-data-display-issue-in-grafana/33088)
**Author:** [@chan\_fander](https://forums.percona.com/u/chan_fander)\ **Replies:** 1\ **Last updated:** [September 12, 2024, 9:37am UTC](https://forums.percona.com/t/i-submitted-a-pr-to-fix-the-data-display-issue-in-grafana/33088 "2024-09-12T09:37:29Z")
Fix the Delayed Replication panel filtering issue that is causing the replication delay not to be displayed. --- ## [Psmdb-backup irregularly fails to complete due to various reasons](https://forums.percona.com/t/psmdb-backup-irregularly-fails-to-complete-due-to-various-reasons/32874)
**Author:** [@Michael\_Schmid](https://forums.percona.com/u/Michael_Schmid)\ **Replies:** 0\ **Last updated:** [September 3, 2024, 8:28am UTC](https://forums.percona.com/t/psmdb-backup-irregularly-fails-to-complete-due-to-various-reasons/32874 "2024-09-03T08:28:13Z")
This topic is also cross-posted on GitHub #1637. I’m happy to delete it on either platform if it fits better on the other. Description: We’re running several psmdb clusters in multiple kubernetes clusters. For most of t… --- ## [PSMDB 7.0.4 SOMETIMES starts without replicaset while has Liveness Probe in Openshift 3 and 4](https://forums.percona.com/t/psmdb-7-0-4-sometimes-starts-without-replicaset-while-has-liveness-probe-in-openshift-3-and-4/27876)
**Author:** [@Iliterallyneedhelp](https://forums.percona.com/u/Iliterallyneedhelp)\ **Replies:** 11\ **Last updated:** [May 29, 2024, 1:37pm UTC](https://forums.percona.com/t/psmdb-7-0-4-sometimes-starts-without-replicaset-while-has-liveness-probe-in-openshift-3-and-4/27876 "2024-05-29T13:37:59Z")
HI, I’m trying to add Liveness Probe to my MongoDB in Openshift. Without these parameters Mongo can be deployed perfectly every single time. I had to create single node replica set as pbm-agent requires it, so I need to… --- ## [Percona Everest v0.8.0. Issue with PMM and certificate](https://forums.percona.com/t/percona-everest-v0-8-0-issue-with-pmm-and-certificate/29001)
**Author:** [@just3tee](https://forums.percona.com/u/just3tee)\ **Replies:** 12\ **Last updated:** [March 11, 2024, 6:30am UTC](https://forums.percona.com/t/percona-everest-v0-8-0-issue-with-pmm-and-certificate/29001 "2024-03-11T06:30:51Z")
Hi all, I want to report a bug I found when I try to create a monitoring-instances. POST request from the FE is missing an “apiKey” and this is why I cannot create a monitoring endpoints. After that, I use Postman to c… --- ## [Percona mysql 8.0.21 unique key column but still insert duplicate data](https://forums.percona.com/t/percona-mysql-8-0-21-unique-key-column-but-still-insert-duplicate-data/25959)
**Author:** [@anly\_zhang](https://forums.percona.com/u/anly_zhang)\ **Replies:** 4\ **Last updated:** [October 17, 2023, 12:06pm UTC](https://forums.percona.com/t/percona-mysql-8-0-21-unique-key-column-but-still-insert-duplicate-data/25959 "2023-10-17T12:06:49Z")
version 8.0.21 transaction\_isolation=READ-COMMITTED table create statement CREATE TABLE \`t\_level\_log\` ( \`id\` bigint NOT NULL AUTO\_INCREMENT COMMENT 'PK', \`log\_id\` varchar(64) COLLATE utf8mb4\_unicode\_ci NOT NULL , \`log… --- ## [Security enableEncryption is always activated when using psmdb-db Helm Chart](https://forums.percona.com/t/security-enableencryption-is-always-activated-when-using-psmdb-db-helm-chart/17529)
**Author:** [@Yossi\_Cohn](https://forums.percona.com/u/Yossi_Cohn)\ **Replies:** 1\ **Last updated:** [October 19, 2022, 7:28pm UTC](https://forums.percona.com/t/security-enableencryption-is-always-activated-when-using-psmdb-db-helm-chart/17529 "2022-10-19T19:28:58Z")
Background When using psmdb-db Helm Chart, the enableEncryption is always activated. Details: Helm Chart Version 1.12.4 Operator Version 1.12.0 (Deployed with Helm) You can see in the rs0 pod description the follow… --- ## [Helm Chart for PSMDB-DB does not contain the mongod section](https://forums.percona.com/t/helm-chart-for-psmdb-db-does-not-contain-the-mongod-section/17534)
**Author:** [@Yossi\_Cohn](https://forums.percona.com/u/Yossi_Cohn)\ **Replies:** 1\ **Last updated:** [October 19, 2022, 7:28pm UTC](https://forums.percona.com/t/helm-chart-for-psmdb-db-does-not-contain-the-mongod-section/17534 "2022-10-19T19:28:13Z")
The Helm Chart for PSMDB-DB should contain the mongod section. This section is referenced for the security.enableEncryption. When you want to define a cluster with disabled encryption, this is the only working method. … --- ## [When Changing to allowUnsafeConfigurations: true cluster goes to failuresand ongos doesnot get to Ready state](https://forums.percona.com/t/when-changing-to-allowunsafeconfigurations-true-cluster-goes-to-failuresand-ongos-doesnot-get-to-ready-state/17547)
**Author:** [@Yossi\_Cohn](https://forums.percona.com/u/Yossi_Cohn)\ **Replies:** 1\ **Last updated:** [October 19, 2022, 7:26pm UTC](https://forums.percona.com/t/when-changing-to-allowunsafeconfigurations-true-cluster-goes-to-failuresand-ongos-doesnot-get-to-ready-state/17547 "2022-10-19T19:26:01Z")
Using the Helm Chart for PSMDB Chart Version: 1.12.4 Operator Version: 1.12.0 When changing to (was false) allowUnsafeConfigurations: true The cluster starts to reinitialize the replicasets pods and eventually the mo… --- ## [Backup failure, missing sst\_info](https://forums.percona.com/t/backup-failure-missing-sst-info/17960)
**Author:** [@Fernando\_Crespo\_Grav](https://forums.percona.com/u/Fernando_Crespo_Grav)\ **Replies:** 1\ **Last updated:** [October 13, 2022, 8:26am UTC](https://forums.percona.com/t/backup-failure-missing-sst-info/17960 "2022-10-13T08:26:53Z")
Hey folks! First of all, what an amazing tool the pxc operator! good job!! I’m quite new in this land of galera, xtradb clusters, xtradb backups and so on and so forth, so chances are that I’m doing something wrong so … --- ## [Percona Helm Chart for PSMDB-DB is missing the crVersion field](https://forums.percona.com/t/percona-helm-chart-for-psmdb-db-is-missing-the-crversion-field/17500)
**Author:** [@Yossi\_Cohn](https://forums.percona.com/u/Yossi_Cohn)\ **Replies:** 0\ **Last updated:** [September 16, 2022, 6:36am UTC](https://forums.percona.com/t/percona-helm-chart-for-psmdb-db-is-missing-the-crversion-field/17500 "2022-09-16T06:36:57Z")
Background The crVersion field should reside in the PSMDB Manifest. Currently, the template does not contain this field. the field is used by the PSMDB Operator, for example here and many more cases. I myself got to… --- ## [Error Log has "Got an error reading communication packets" after patching MySQL to 5.7.30](https://forums.percona.com/t/error-log-has-got-an-error-reading-communication-packets-after-patching-mysql-to-5-7-30/7866)
**Author:** [@sachinambardekar](https://forums.percona.com/u/sachinambardekar)\ **Replies:** 4\ **Last updated:** [November 10, 2020, 2:26pm UTC](https://forums.percona.com/t/error-log-has-got-an-error-reading-communication-packets-after-patching-mysql-to-5-7-30/7866 "2020-11-10T14:26:18Z")
Hello Team, I are seeing "Got an error reading communication packets " message in the error log after patching the instance to MySQL 5.7.30. Please advise. Thank you, SA --- ## [V.1.5.0 operator Ssl hadnshake issue](https://forums.percona.com/t/v-1-5-0-operator-ssl-hadnshake-issue/8219)
**Author:** [@EugeneK](https://forums.percona.com/u/EugeneK)\ **Replies:** 1\ **Last updated:** [November 2, 2020, 6:29am UTC](https://forums.percona.com/t/v-1-5-0-operator-ssl-hadnshake-issue/8219 "2020-11-02T06:29:31Z")
Hi, I am using v1.5.0 kubernetes operator for mongo, cluster version v1.14.1, mongo - image: percona/percona-server-mongodb:3.6 And I have issue with a lot of requests from operator to mongo pods: 2020-11-01T16:15:37.… --- ## [Is documentation wrong?](https://forums.percona.com/t/is-documentation-wrong/7648)
**Author:** [@ilya\_romashev](https://forums.percona.com/u/ilya_romashev)\ **Replies:** 1\ **Last updated:** [May 22, 2020, 1:16pm UTC](https://forums.percona.com/t/is-documentation-wrong/7648 "2020-05-22T13:16:51Z")
Quick Start Guide for Percona XtraDB Cluster - Percona XtraDB Cluster I used this^ link to set up mysql cluster in my lab. First, debian package does not contains /usr/lib/tmpfiles.d/percona.conf, which means that dir /v…