Hello everyone!
I’m trying to deploy a ScyllaDB cluster using docker-compose. I have the following YAML file:
name: scylla-cluster
services:
scylla-node-1:
container_name: scylla-node-1
image: scylladb/scylla:latest
command:
- --seeds=scylla-node-1,scylla-node-2,scylla-node-3
- --smp=1
- --memory=2G
- --overprovisioned=1
- --api-address=0.0.0.0
scylla-node-2:
container_name: scylla-node-2
image: scylladb/scylla:latest
command:
- --seeds=scylla-node-1,scylla-node-2,scylla-node-3
- --smp=1
- --memory=2G
- --overprovisioned=1
- --api-address=0.0.0.0
scylla-node-3:
container_name: scylla-node-3
image: scylladb/scylla:latest
command:
- --seeds=scylla-node-1,scylla-node-2,scylla-node-3
- --smp=1
- --memory=2G
- --overprovisioned=1
- --api-address=0.0.0.0
When I run docker-compose up, I get the following error from each node:
FATAL: Exception during startup, aborting: std::runtime_error (Could not setup Async I/O: Resource temporarily unavailable. The required nr_event (1) exceeds the limit of request capacity in /proc/sys/fs/aio-max-nr (65536). Try increasing that number or reducing the amount of logical CPUs available for your application)
Now, if I run cat /proc/sys/fs/aio-max-nr on the host machine, I get 1048576. If I run the same command inside one of the containers, I get 65536.What should I do to increase the aio-max-nr inside the container? Or what should I do to make it work in general?
This is what running lscpu gives me inside a container:
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 48 bits physical, 48 bits virtual
Byte Order: Little Endian
CPU(s): 8
On-line CPU(s) list: 0-7
Vendor ID: AuthenticAMD
Model name: AMD Ryzen 5 PRO 6650U with Radeon Graphics
CPU family: 25
Model: 68
Thread(s) per core: 1
Core(s) per socket: 8
Socket(s): 1
Stepping: 1
BogoMIPS: 5789.06
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm rep_good nopl cpuid extd_apicid tsc_known_freq pni p
clmulqdq ssse3 fma cx16 sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm cmp_legacy svm cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw perfctr_c
ore ssbd ibrs ibpb stibp vmmcall fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves clzero xsaveerptr wbnoinvd arat npt lbrv n
rip_save tsc_scale vmcb_clean pausefilter pfthreshold v_vmsave_vmload vgif umip pku vaes vpclmulqdq rdpid fsrm arch_capabilities
Virtualization features:
Virtualization: AMD-V
Hypervisor vendor: KVM
Virtualization type: full
Caches (sum of all):
L1d: 512 KiB (8 instances)
L1i: 512 KiB (8 instances)
L2: 4 MiB (8 instances)
L3: 128 MiB (8 instances)
Vulnerabilities:
Gather data sampling: Not affected
Itlb multihit: Not affected
L1tf: Not affected
Mds: Not affected
Meltdown: Not affected
Mmio stale data: Not affected
Reg file data sampling: Not affected
Retbleed: Not affected
Spec rstack overflow: Vulnerable: Safe RET, no microcode
Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl
Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Spectre v2: Mitigation; Retpolines; IBPB conditional; IBRS_FW; STIBP disabled; RSB filling; PBRSB-eIBRS Not affected; BHI Not affected
Srbds: Not affected
Tsx async abort: Not affected