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Knowledge Base

NSX-T UI and API fail with error 'Server is overloaded' (78072)

Last Updated: 2/23/2024Categories: InformationalTotal Views: 8643Language:
Chinese (Simplified)JapaneseEnglish

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Symptoms

The following symptoms may be observed

A large IPSet has been configured using an IP range instead of IP in CIDR format

The UI and API are inaccessible with a "Server is overloaded" error

{
"module_name" : "common-service",
"error_message" : "Server is overloaded",
"error_code" : "98"
}

HTTPS and Manager services are intermittently going DOWN e.g.

mgr1> get cluster status

Group Type: MANAGER
Group Status: DEGRADED

Members:
UUID                                       FQDN       IP           STATUS
dec14d56-8f2a-1bd9-619b-515e4acab973       mgr1     192.168.1.4     DOWN
87714d56-4e0a-626f-af02-6cfc54edca1b       mgr2     192.168.1.5     DOWN
4bbe4d56-2a1d-bf95-bf36-5429dc222ec2       mgr3     192.168.1.6     UP

Group Type: HTTPS
Group Status: DEGRADED

Members:
UUID                                       FQDN        IP          STATUS
dec14d56-8f2a-1bd9-619b-515e4acab973       mgr1     192.168.1.4     UP
87714d56-4e0a-626f-af02-6cfc54edca1b       mgr2     192.168.1.5     DOWN
4bbe4d56-2a1d-bf95-bf36-5429dc222ec2       mgr3     192.168.1.6     UP

The NSX Manager VIP is moving between Managers and intermittently the VIP IP does not respond to ping

/var/log/proton/proton-tomcat-wrapper.log has the following has the following out of memory logging

INFO   | jvm 4    | 2020/03/02 14:39:03 | java.lang.OutOfMemoryError: Java heap space
STATUS | wrapper  | 2020/03/02 14:39:03 | The JVM has run out of memory.  Requesting thread dump.
STATUS | wrapper  | 2020/02/05 14:39:03 | The JVM has run out of memory.  Restarting JVM.

Cause

If a very large IPset is created using a range e.g. 0.0.0.0-255.255.255.255, when the range to CIDR conversion takes place it results in java heap memory exhaustion.

Resolution

This issue is resolved in VMware NSX-T Data Center 3.0, available at VMware Downloads.

Workaround

Change the IPSET to use CIDR format e.g.
Change 0.0.0.0 - 255.255.255.255 to 0.0.0.0/0

As the UI/API are inaccessible the following procedure can be used to allow a short window to make the change

1) Identify which Manager has the VIP

mgr1> get cluster status verbose

Group Type: HTTPS
Group Status: STABLE

Members:
UUID                                      FQDN        IP        STATUS
65fb0342-4977-bced-4552-b310011f6a79      mgr1    192.168.120.10   UP
96f10342-1fa9-9b57-809e-69825d0e683f      mngr2   192.168.120.11   UP
292a0342-d2b5-7f7b-3273-eb22c1158410      mgr3    192.168.120.12   UP

Leaders:
SERVICE     LEADER                            LEASE VERSION
ap       292a0342-d2b5-7f7b-3273-eb22c1158410       6619

Use the cli "get nodes" to identify which manager has this UUID, in this case 292a0342-d2b5-7f7b-3273-eb22c1158410

2) Restart the proton service
nsx-mngr> restart service manager
or
root@mp: etc/init.d/proton restart

3) This will allow a short window to edit or delete the problematic IPSET via UI or API

Detectable by VMware SkylineTM

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Attachments

Additional Resources

KB
•
End Of General Availability of the Free vSphere Hypervisor (ESXi 7.x and 8.x) (2107518)

KB
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Download and Install VMware Fusion (2014097)

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