Error map
InsufficientInstanceCapacity InsufficientInstanceCapacity: We currently do not have sufficient capacity in the Availability Zone you requested
AWS · layer 6, Platform & cloud
Centre: this error. First ring: errors it is linked with (12). Outer ring: what those are linked with. Colours show the layer of a request each error belongs to. Click any dot to re-centre the map on it; hover to follow its connections. The centre dot opens the error page.
Directly related (12)
HTTP 503 Service Unavailable
The server is temporarily unable to handle the request — overloaded, in maintenance, or has no healthy backends.
FATAL: too many connections for role "x"
The role reached its per-role CONNECTION LIMIT (often set by hosting providers or free tiers).
MySQL ERROR 1040 (08004): Too many connections
MySQL reached `max_connections` and refuses new clients.
HTTP 508 Loop Detected (Resource Limit Is Reached)
Either the server detected an infinite loop (WebDAV) or — much more often — a cPanel/CloudLinux host is saying your account hit i…
An error occurred (UnauthorizedOperation): You are not authorized to perform this operation. Encoded authorization failure message: ...
The IAM identity is missing an EC2 (or related) permission. The encoded message tells you exactly which action and resource were…
EC2 status check failed: Instance reachability check failed (1/2 checks passed)
AWS can reach the host, but the operating system inside the instance isn’t responding — kernel panic, full disk, broken network c…
FATAL: sorry, too many clients already / remaining connection slots are reserved for non-replication superuser connections
PostgreSQL reached max_connections.
Azure: SkuNotAvailable / QuotaExceeded when creating a VM or resource
The VM size isn’t offered in that region/zone for your subscription, or you’ve hit the vCPU quota.
MySQL ERROR 1114 (HY000): The table 'x' is full
MySQL couldn’t extend the table — disk full, a size limit, or a MEMORY table hitting max_heap_table_size.
ERROR: could not extend file "base/…": No space left on device
The disk holding the PostgreSQL data directory (or WAL) is full.
HTTP 509 Bandwidth Limit Exceeded
A hosting-control-panel status (cPanel/Apache) meaning the account used up its monthly bandwidth allowance.
VcpuLimitExceeded: You have requested more vCPU capacity than your current vCPU limit
Your account’s On-Demand (or Spot) vCPU quota for that instance family and region is used up.
Two steps away (32)
Kubernetes: CrashLoopBackOff
The container starts, crashes (or exits), and Kubernetes keeps restarting it with increasing back-off delays.
HTTP 429 Too Many Requests
You’ve hit a rate limit — too many requests in a given time window. Slow down and retry later.
HTTP 500 Internal Server Error
The server hit an unexpected condition — usually an unhandled exception or misconfiguration in the application.
PostgreSQL: could not connect to server / connection refused — Is the server running on host and accepting TCP/IP connections?
The client reached no PostgreSQL listener at that host/port — the server is down, listening elsewhere, or not accepting remote co…
FATAL: database "x" does not exist
The connection names a database that isn’t on that server.
server closed the connection unexpectedly — This probably means the server terminated abnormally before or while processing the request.
The connection to PostgreSQL dropped — the server restarted/crashed, a proxy/firewall killed an idle connection, or the backend w…
MySQL ERROR 2002 (HY000): Can't connect to local MySQL server through socket
The client couldn’t reach the MySQL server — it isn’t running, or the client is looking for the socket/port in the wrong place.
WordPress: Error Establishing a Database Connection
WordPress can’t connect to its MySQL/MariaDB database with the credentials in wp-config.php, or the database server is down.
Lock wait timeout exceeded; try restarting transaction (MySQL 1205)
A query waited too long for a row lock held by another transaction and gave up.
Azure VM: AllocationFailed / ZonalAllocationFailed — Allocation failed. We do not have sufficient capacity for the requested VM size
Azure has no capacity for that VM size in the region/zone (or in the cluster the VM is pinned to) right now.
HTTP 301 Moved Permanently
The resource has a new permanent URL; clients and search engines should use the address in the Location header from now on.
HTTP 302 Found (Temporary Redirect)
The resource is temporarily at another URL; clients should keep using the original URL for future requests.
AWS S3: AccessDenied (403) when calling GetObject / PutObject
An IAM policy, bucket policy, ACL/ownership setting, Block Public Access or KMS key policy denied the S3 request.
PERMISSION_DENIED: The caller does not have permission (insufficient permissions)
You are authenticated, but your identity isn’t allowed to perform this action on this resource.
AccessDeniedException: User: arn:aws:iam::... is not authorized to perform: service:Action on resource: ...
The IAM user or role making the call has no permission for that action on that resource — the message names both.
InvalidKeyPair.NotFound: The key pair 'x' does not exist
The key pair name you passed doesn’t exist in that region (key pairs are regional).
InvalidAMIID.NotFound: The image id '[ami-xxxx]' does not exist
The AMI ID isn’t available in this region/account — AMI IDs are regional and private AMIs must be shared.
mount: wrong fs type, bad option, bad superblock on /dev/sdb1, missing codepage or helper program
mount couldn’t mount the device — the filesystem type isn’t supported/installed, the partition is wrong, or the filesystem is dam…
server does not support SSL, but SSL was required / no pg_hba.conf entry … no encryption
The client and server disagree about SSL — the client requires it but the server doesn’t offer it, or the server requires it and…
AWS: ThrottlingException / Rate exceeded
You exceeded the request rate for an AWS API; retry with exponential backoff.
Azure: AuthorizationFailed — The client does not have authorization to perform action
The signed-in identity (user, service principal or managed identity) lacks an Azure RBAC role for that action on that scope.
HTTP 402 Payment Required
The service wants payment before it will process the request — an unpaid invoice, exhausted credits or a failed card.
no space left on device (Docker / Linux)
The disk (or inode table) is full — Docker images, build cache, logs and volumes are common culprits.
Azure Storage: AuthorizationPermissionMismatch (403) — This request is not authorized to perform this operation using this permission
You’re accessing blob/queue data with Microsoft Entra ID, but the identity has only management roles (Owner/Contributor) — not a…
MySQL ERROR 126 (HY000): Incorrect key file for table; try to repair it
MySQL can’t use a table’s index file — usually a full tmp disk during a query, or MyISAM corruption.
StorageAccountAlreadyTaken: The storage account named x is already taken
Storage account names are globally unique across Azure; another customer (or you elsewhere) already uses the name.
Azure Storage: Server failed to authenticate the request. Make sure the value of Authorization header is formed correctly including the signature (AuthenticationFailed)
The storage request’s signature or SAS token is invalid — wrong/rotated account key, expired SAS, or clock skew.
Azure Storage: ContainerNotFound / BlobNotFound — The specified container (or blob) does not exist
The container or blob path doesn’t exist in that storage account.
HTTP 502 Bad Gateway
A proxy or gateway (Nginx, load balancer, CDN) got an invalid response — or no response — from the upstream server behind it.
Error creating: pods is forbidden: exceeded quota: compute-resources, requested: limits.memory=1Gi, used: ..., limited: ...
The namespace’s ResourceQuota doesn’t have room for the new pod’s requests/limits (or object count).
pods is forbidden: failed quota: must specify limits.cpu,limits.memory,requests.cpu,requests.memory
A ResourceQuota on the namespace covers CPU/memory, so every pod must declare those requests/limits — and this one doesn’t.
Disk quota exceeded (EDQUOT)
Your user or group has used its storage quota on this filesystem, even if the disk itself has space.
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