Lucien
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Articles
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How To use key-busy logging to identify a hot key
Audience: DBAs and SREs troubleshooting hot keys (fail_key_busy, error 14 KEY_BUSY).Applies to: Aerospike Database 6.4.0.0 and later.ContextWhen clients receive error 14 (KEY_BUSY) and the namespac...
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Troubleshooting ldap with ldapsearch
Audience: DBAs, platform engineers and LDAP / Active Directory administrators. Applies to: Aerospike Database Enterprise 8.1 and later with LDAP authentication.SymptomOne of these: LDAP users can l...
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XDR transaction-queue-limit sizing
Audience: DBAs and SREs who run Aerospike XDR.Applies to: Aerospike Database Enterprise 5.7 to 8.2. The mechanics described here are the same in all of these versions.SymptomOn a source cluster, on...
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Aerospike Secret-Agent startup order
Problem DescriptionAerospike Database is configured to read one or more values from Aerospike Secret Agent (secrets: in aerospike.conf), and both run as systemd services on the same host. After a h...
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Why doesn't system memory usage go down after records expire or are deleted?
DetailAfter a period of heavy expiration, eviction or deletes, the record count on a node drops and index_used_bytes falls, but the node's memory usage does not. system_free_mem_pct stays low, and ...
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Unexplained XDR Outbound Connector Connection Reset
Problem DescriptionXDR lag to a datacenter behind an Aerospike outbound connector (or the XDR Proxy) grows continuously and does not recover, while the destination system itself is healthy.Typical ...
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Why is CPU being used by kworker and kswapd0 causing latencies?
Problem DescriptionWhen an Aerospike system is experiencing latency the following symptoms may be observed: high disk load observed via the uptime commandtop output showing CPU utilization by eithe...
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How to zeroize multiple storage devices simultaneously?
ContextCustomer may need to dd (erase) multiple disk on a server. This can occur when initializing a system configured for multiple storage-engine devices (ssd, nvmes, raw disk partitions) .Method...
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Why is asd process blocked for more than 120 Seconds?
Problem DescriptionCustomer is finding "INFO: task NAME:PID blocked for more than 120 seconds" in /var/log/messages or dmesg. This indicates that the process requested a blocking resource such as a...
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How to completely remove and clean-up an Aerospike server installation?
ContextThe following describes the procedure for the proper removal or uninstall followed by a clean-up of an Aerospike installation. This document will give an overview of the packages, files, and...